技术领域technical field
本发明是有关一种输入装置，更特别有关一种可降低耗能和提升报告率的电容式触控装置。The present invention relates to an input device, more particularly to a capacitive touch device capable of reducing power consumption and increasing report rate.
背景技术Background technique
触控面板因操作简单且于操作时不需搭配例如滑鼠或键盘等额外周边装置，因此普遍地被应用于可携式电子装置和家电产品上。在电容式触控面板中，使用者所操作的触控区域通常仅占据触控面板的部分面积，因此在节能省电的考量上，除了能够于休眠模式下降低耗能，较佳也能够于正常模式下节省整体耗能。The touch panel is widely used in portable electronic devices and home appliances because it is easy to operate and does not need additional peripheral devices such as a mouse or a keyboard. In a capacitive touch panel, the touch area operated by the user usually only occupies part of the area of the touch panel. Therefore, in consideration of energy saving, in addition to reducing power consumption in sleep mode, it is better to be able to Save overall energy consumption in normal mode.
已知技术中，于休眠模式下，可通过降低扫描频率来降低耗能。例如，台湾专利第200943156号中揭示一种于正常模式下以4毫秒的频率进行扫描而于休眠模式下以40毫秒的频率进行扫描的省电方法，其根据判断长时间是否发生触碰事件（touch event）来确认是否从正常模式切换至休眠模式。然而在休眠模式下，降低扫描频率则会同时降低报告率（report rate）而可能延迟第一次触碰发生的检测时间，同时会降低触控面板的反应时间。In the known technology, in the sleep mode, the power consumption can be reduced by reducing the scanning frequency. For example, Taiwan Patent No. 200943156 discloses a power saving method that scans at a frequency of 4 milliseconds in normal mode and scans at a frequency of 40 milliseconds in sleep mode, which is based on judging whether a touch event occurs for a long time ( touch event) to confirm whether to switch from normal mode to sleep mode. However, in the sleep mode, reducing the scanning frequency will reduce the report rate at the same time, which may delay the detection time of the first touch and reduce the response time of the touch panel.
有鉴于此，本发明还提出一种电容式触控装置，其于休眠模式下以及正常模式下均可降低触控面板的整体耗能，而且不会降低检测第一次触碰发生的即时性。In view of this, the present invention also proposes a capacitive touch device, which can reduce the overall energy consumption of the touch panel in sleep mode and normal mode, and will not reduce the immediacy of detecting the first touch .
发明内容Contents of the invention
本发明提供一种电容式触控装置，其可于休眠模式下仅扫描触控面板的部份区域和/或降低触控面板的测量数据的采样数目，借此降低整体耗能。The present invention provides a capacitive touch device, which can only scan a part of the touch panel and/or reduce the sampling number of measurement data of the touch panel in sleep mode, thereby reducing overall energy consumption.
本发明提供一种电容式触控装置，其可于正常模式下仅扫描触控面板的部份区域和/或降低触控的部份区域的测量数据的采样数目，借此降低整体耗能。The present invention provides a capacitive touch device, which can scan only a part of the touch panel in a normal mode and/or reduce the sampling number of measurement data in the part of the touch area, thereby reducing overall energy consumption.
本发明提供一种电容式触控装置，其可降低触控面板的测量数据的采样数目，借此增加报告率和检测即时性。The invention provides a capacitive touch device, which can reduce the sampling number of measurement data of the touch panel, thereby increasing the report rate and detection immediacy.
本发明提供一种电容式触控装置，包含触控面板以及控制处理电路。所述触控面板包含矩阵排列的多个检测单元。所述控制处理电路用以输入驱动信号至所述触控面板的所述检测单元并依次从所述检测单元读取测量数据；其中，正常模式下所述控制处理电路以第一采样数目读取所述检测单元的所述测量数据且休眠模式下所述控制处理电路以第二采样数目读取所述检测单元的所述测量数据。所述第二采样数目低于所述第一采样数目。The invention provides a capacitive touch device, which includes a touch panel and a control processing circuit. The touch panel includes a plurality of detection units arranged in a matrix. The control processing circuit is used to input a driving signal to the detection unit of the touch panel and sequentially read measurement data from the detection unit; wherein, in the normal mode, the control processing circuit reads with the first sampling number The measurement data of the detection unit and the control processing circuit reads the measurement data of the detection unit with a second sampling number in the sleep mode. The second number of samples is lower than the first number of samples.
本发明还提供电容式触控装置，包含触控面板以和控制处理电路。所述触控面板包含矩阵排列的多个检测单元。控制处理电路用以输入驱动信号至所述触控面板的所述检测单元并从所述检测单元依次读取测量数据；其中，正常模式下所述控制处理电路于第一帧期间以第一采样数目读取所述检测单元的所述测量数据且休眠模式下所述控制处理电路于第二帧期间以第二采样数目读取所述检测单元的所述测量数据。所述第二采样数目低于所述第一采样数目且所述第二帧期间短于所述第一帧期间。The invention also provides a capacitive touch device, including a touch panel and a control processing circuit. The touch panel includes a plurality of detection units arranged in a matrix. The control processing circuit is used to input the driving signal to the detection unit of the touch panel and sequentially read the measurement data from the detection unit; wherein, in the normal mode, the control processing circuit takes the first sample during the first frame period The measurement data of the detection unit is read by a number and the control processing circuit reads the measurement data of the detection unit with a second sampling number during a second frame period in a sleep mode. The second number of samples is lower than the first number of samples and the second frame period is shorter than the first frame period.
本发明还提供一种电容式触控装置，包含触控面板以及控制处理电路。所述触控面板包含矩阵排列的多个检测单元。控制处理电路用以输入驱动信号至所述触控面板的所述检测单元并依次从所述检测单元读取测量数据；其中，休眠模式下所述控制处理电路仅读取部份所述检测单元的所述测量数据。The invention also provides a capacitive touch device, which includes a touch panel and a control processing circuit. The touch panel includes a plurality of detection units arranged in a matrix. The control processing circuit is used to input a driving signal to the detection unit of the touch panel and sequentially read measurement data from the detection unit; wherein, in the sleep mode, the control processing circuit only reads a part of the detection unit of the measured data.
一实施例中，所述控制处理电路以相同的采样频率读取每一个检测单元的多个笔测量数据。例如，读取所述第一采样数目和所述第二采样数目的采样频率均相同。In one embodiment, the control processing circuit reads multiple pen measurement data of each detection unit at the same sampling frequency. For example, the sampling frequencies for reading the first sampling number and the second sampling number are the same.
一实施例中，所述正常模式下，所述控制处理单元可选择以较高的采样数目（例如第一采样数目）读取全部或部分所述检测单元的测量数据；其中，当所述控制处理单元以所述第一采样数目仅读取部分所述检测单元的测量数据时，所述控制处理单元以较低的采样数目（例如所述第二采样数目）读取其他部分所述检测单元的测量数据，以进一步节省耗能。In an embodiment, in the normal mode, the control processing unit may choose to read all or part of the measurement data of the detection unit with a higher sampling number (for example, the first sampling number); wherein, when the control When the processing unit reads only part of the measurement data of the detection unit with the first sampling number, the control processing unit reads the other part of the detection unit with a lower sampling number (such as the second sampling number) measurement data to further save energy consumption.
一实施例中，所述控制处理电路扫描所述触控面板的帧期间可包含或不包含闲置时间。当所述帧期间包含闲置时间时可节省耗能；当所述帧期间不包含闲置时间可进一步提升扫瞄频率和报告率。In one embodiment, the frame period during which the control processing circuit scans the touch panel may or may not include an idle time. When the frame period includes idle time, energy consumption can be saved; when the frame period does not include idle time, the scanning frequency and report rate can be further increased.
一实施例中，当所述控制处理电路于正常模式和休眠模式仅读取部分检测单元的测量数据时，于相邻帧期间所述控制处理电路较佳读取不同部份的检测单元的测量数据，以在至少两帧期间能够检测所有检测单元至少一次。In one embodiment, when the control processing circuit only reads the measurement data of a part of the detection units in the normal mode and the sleep mode, the control processing circuit preferably reads the measurement data of different parts of the detection units during adjacent frames. data to be able to detect all detection units at least once during at least two frames.
本发明实施例的电容式触控装置中，在休眠模式下可以较低的采样数目读取部份或全部检测单元的测量数据，借此降低耗能并提升检测即时性；于正常模式下可于触碰点周围区域以正常采样数目读取所述周围区域内全部检测单元的测量数据并于所述周围区域以外的区域以较低的采样数目读取部份或全部检测单元的测量数据，借此降低耗能并提升检测即时性。In the capacitive touch device of the embodiment of the present invention, in the sleep mode, the measurement data of part or all of the detection units can be read with a relatively low sampling number, thereby reducing energy consumption and improving the real-time detection; in the normal mode, it can Reading the measurement data of all the detection units in the surrounding area with a normal sampling number in the area around the touch point and reading the measurement data of some or all of the detection units with a lower sampling number in the area outside the surrounding area, This reduces energy consumption and improves the real-time detection.
为了让本发明的上述和其他目的、特征和优点能更明显，下文将配合所附图示，详细说明如下。此外，在本发明的说明中，相同的构件是以相同的符号表示，于此先述明。In order to make the above and other objects, features and advantages of the present invention more apparent, the following will be described in detail in conjunction with the accompanying drawings. In addition, in description of this invention, the same member is shown by the same code|symbol, and it demonstrates it earlier.
附图说明Description of drawings
图1显示本发明实施例的电容式触控装置的方块示意图；FIG. 1 shows a schematic block diagram of a capacitive touch device according to an embodiment of the present invention;
图2显示本发明实施例的电容式触控装置的示意图；2 shows a schematic diagram of a capacitive touch device according to an embodiment of the present invention;
图3A显示本发明实施例的电容式触控装置于休眠模式下读取部分检测单元的测量数据的示意图；FIG. 3A shows a schematic diagram of the capacitive touch device according to the embodiment of the present invention reading the measurement data of some detection units in the sleep mode;
图3B显示本发明实施例的电容式触控装置于休眠模式下读取部分检测单元的测量数据的另一示意图；3B shows another schematic diagram of the capacitive touch device according to the embodiment of the present invention reading the measurement data of some detection units in the sleep mode;
图4显示本发明实施例的电容式触控装置于正常模式下读取部分检测单元的测量数据的示意图；FIG. 4 shows a schematic diagram of the capacitive touch device according to the embodiment of the present invention reading measurement data of some detection units in normal mode;
图5显示本发明第一实施例的电容式触控装置的运作示意图；FIG. 5 shows a schematic diagram of the operation of the capacitive touch device according to the first embodiment of the present invention;
图6显示本发明第二实施例的电容式触控装置的运作示意图；FIG. 6 shows a schematic diagram of the operation of the capacitive touch device according to the second embodiment of the present invention;
图7显示本发明实施例的电容式触控装置读取检测单元的测量数据的示意图。FIG. 7 shows a schematic diagram of reading measurement data of a detection unit by a capacitive touch device according to an embodiment of the present invention.
附图标记说明Explanation of reference signs
1 电容式触控装置1 capacitive touch device
11 触控面板11 Touch panel
111 检测单元111 detection unit
1111-111n 检测单元1111 -111n detection unit
111a 检测单元的第一部份111a The first part of the detection unit
111b 检测单元的第二部份111b The second part of the detection unit
111c 检测单元的第三部份The third part of the 111c detection unit
13 控制处理电路13 Control processing circuit
Tc 触碰点Tc touch point
SN1 第一采样数目SN1 first sample number
SN2 第二采样数目SN2 second sample number
SN3 第三采样数目SN3 third sample number
Sd 驱动信号Sd drive signal
Sm 测量数据。Sm Measurement data.
具体实施方式Detailed ways
参照图1和图2所示，图1显示本发明实施例的电容式触控装置的方块示意图而图2显示本发明实施例的电容式触控装置的示意图。本发明的电容式触控装置1包含触控面板11和控制处理单元13。本实施例中，所述触控面板11例如为电容式触控面板，并包含矩阵排列的多个检测单元111（例如包含1111-111n），如图2所示，用以供使用者于其上进行触控操作。所述控制处理电路13耦接所述触控面板11，用以输出驱动信号Sd至所述触控面板11的所述检测单元111并依次从所述检测单元111读取测量数据Sm，并根据所读取的测量数据Sm判断至少一个触碰点并输出相对应的控制信号至使用者图形介面（GUI）；其中，所述控制处理电路13与所述触控面板11的连接方式已为已知，例如可通过多个开关元件输入所述驱动信号Sd并依次读取所述测量数据Sm，故在此不再赘述。所述驱动信号Sd例如可为连续电压信号，例如可为弦波、方波或其他具有对称或不对称波形的电压信号；所述控制处理电路13在读取每一个检测单元111时均读取预设采样数目（sampling number）的测量数据来计算触控信息，例如以采样频率读取每一个检测单元111的128笔、64笔或32笔数据来判断触控事件以和触控位置等触控信息。可以了解的是，所述控制处理电路13计算所述触控信息所需的采样数目可根据所需的精确度决定，并不限于本发明说明中所揭示的采样数目。所述触控信息是用以相对控制电子装置执行特定程式，因其已为已知故在此不再赘述。Referring to FIG. 1 and FIG. 2 , FIG. 1 shows a schematic block diagram of a capacitive touch device according to an embodiment of the present invention, and FIG. 2 shows a schematic diagram of a capacitive touch device according to an embodiment of the present invention. The capacitive touch device 1 of the present invention includes a touch panel 11 and a control processing unit 13 . In this embodiment, the touch panel 11 is, for example, a capacitive touch panel, and includes a plurality of detection units 111 (for example, including 1111 -111n ) arranged in a matrix, as shown in FIG. Touch operation on it. The control processing circuit 13 is coupled to the touch panel 11 for outputting a driving signal Sd to the detection unit 111 of the touch panel 11 and sequentially reading measurement data Sm from the detection unit 111, and according to The read measurement data Sm determines at least one touch point and outputs a corresponding control signal to the GUI; wherein, the connection mode between the control processing circuit 13 and the touch panel 11 has been established It is known that, for example, the driving signal Sd can be input through a plurality of switching elements and the measurement data Sm can be read sequentially, so details will not be repeated here. The drive signal Sd can be, for example, a continuous voltage signal, such as a sine wave, a square wave, or other voltage signals with symmetrical or asymmetrical waveforms; the control processing circuit 13 reads each detection unit 111 when reading Preset sampling number of measurement data to calculate touch information, for example, read 128, 64 or 32 data of each detection unit 111 at a sampling frequency to determine touch events and touch positions, etc. control information. It can be understood that the number of samples required for the control processing circuit 13 to calculate the touch information can be determined according to the required accuracy, and is not limited to the number of samples disclosed in the description of the present invention. The touch information is used to execute a specific program relative to the control electronic device, which is not repeated here because it is already known.
本发明中，所述电容式触控装置1可运作于正常模式和休眠模式（举例说明于下）；其中，所述正常模式可包含两种实施态样。所述控制处理单元13于不同模式下较佳输入相同的驱动信号至每一个检测单元111。所述正常模式是指所述控制处理电路13判断出至少一个指示物，例如手指正操作于所述触控面板11上的运作模式；所述休眠模式是指所述控制处理电路13判断预设时间内无任何指示物操作在所述触控面板11上的运作模式。In the present invention, the capacitive touch device 1 can operate in a normal mode and a sleep mode (illustrated below); wherein, the normal mode can include two implementations. The control processing unit 13 preferably inputs the same driving signal to each detection unit 111 in different modes. The normal mode refers to the operation mode in which the control processing circuit 13 determines that at least one indicator, such as a finger, is operating on the touch panel 11; the sleep mode refers to the control processing circuit 13 judging the preset The operation mode in which no pointer is operated on the touch panel 11 within a certain period of time.
一部分休眠模式是为所述正常模式的另一种实施态样；例如，当所述控制处理电路13判断出至少一个指示物正操作于所述触控面板11上时，将触控面板11的所述检测单元1111-111n区分为第一部份和第二部份；其中，所述第一部份为至少一个触碰点周围的预设范围（包含所述触碰点的检测单元）而所述第二部份为其他检测单元111。所述电容式触控装置1于所述第一部份的所述检测单元111执行如同所述正常模式的运作并于所述第二部份的所述检测单元111执行如同所述休眠模式的运作，此处为方便说明而将此运作模式称为部份休眠模式。必须说明是，本发明中所述部份休眠模式可选择不实施；也即，所述正常模式下所述检测单元111可不被另外区分为不同区域。Part of the sleep mode is another implementation of the normal mode; for example, when the control processing circuit 13 determines that at least one pointer is operating on the touch panel 11, the touch panel 11 The detection units 1111 -111n are divided into a first part and a second part; wherein, the first part is a preset range around at least one touch point (including the detection unit of the touch point ) and the second part is other detection units 111 . The detection unit 111 in the first part of the capacitive touch device 1 performs the same operation as the normal mode and the detection unit 111 in the second part performs the operation as the sleep mode operation, and this operation mode is referred to as a partial sleep mode for convenience of description herein. It must be noted that, in the present invention, the part of the sleep mode may not be implemented; that is, the detection unit 111 in the normal mode may not be further divided into different areas.
请参照图3A和图3B所示，其显示本发明实施例的电容式触控装置1在休眠模式下读取部分检测单元的测量数据的示意图。如前所述，当所述控制处理电路13判定预设时间内无任何手指触碰所述触控面板11时则进入所述休眠模式以节省耗能。所述休眠模式下，所述控制处理电路13输入驱动信号Sd至所述触控面板11的全部或部份检测单元111并仅读取部份所述检测单元111的测量数据，当所述控制处理电路13判断至少一个检测单元111检测到触碰事件时，则控制所述电容式触控装置1回到正常模式。Please refer to FIG. 3A and FIG. 3B , which show a schematic view of the capacitive touch device 1 according to the embodiment of the present invention reading the measurement data of some detection units in the sleep mode. As mentioned above, when the control processing circuit 13 determines that no finger touches the touch panel 11 within a preset time, it enters the sleep mode to save energy consumption. In the sleep mode, the control processing circuit 13 inputs the drive signal Sd to all or part of the detection units 111 of the touch panel 11 and only reads the measurement data of part of the detection units 111. When the control When the processing circuit 13 determines that at least one detection unit 111 detects a touch event, it controls the capacitive touch device 1 to return to the normal mode.
图3A和图3B显示所述制处理电路13于相邻帧期间读取不同部份的所述检测单元111的测量数据，例如于第m帧期间和第（m±1）帧期间分别读取不同的检测单元111。借此，当触碰事件仅发生于单一的检测单元111时，可避免无法结束休眠模式的情形。例如，图3A显示所述控制处理电路13所读取的部份所述检测单元111呈西洋棋盘图案；图3B显示所述控制处理电路13所读取的部份为不相邻列的所述检测单元111。必须说明的是，只要是能够在至少两相邻帧期间获取完所有检测单元111即可，所述控制处理电路13在每一帧期间所读取的部份所述检测单元111的分布并不限于图3A和图3B所示，例如所述控制处理电路13所读取的部份也可为不相邻行的所述检测单元111。本发明中，所述帧期间指所述控制处理电路13扫描完所有或部分所述检测单元111并进行一次报告（report）的期间。Fig. 3A and Fig. 3B show that the measurement data of different parts of the detection unit 111 is read by the control processing circuit 13 during adjacent frames, for example, during the m-th frame and the (m±1)-th frame, respectively. Different detection units 111. In this way, when the touch event only occurs on a single detection unit 111 , the situation that the sleep mode cannot be terminated can be avoided. For example, FIG. 3A shows that the part of the detection unit 111 read by the control processing circuit 13 is in a checkerboard pattern; FIG. 3B shows that the part read by the control processing circuit 13 is the non-adjacent column. detection unit 111. It must be noted that, as long as all detection units 111 can be obtained within at least two adjacent frame periods, the distribution of the detection units 111 read by the control processing circuit 13 during each frame period does not vary. Limited to what is shown in FIG. 3A and FIG. 3B , for example, the portion read by the control processing circuit 13 may also be the detection units 111 in non-adjacent rows. In the present invention, the frame period refers to a period during which the control processing circuit 13 scans all or part of the detection units 111 and makes a report (report).
本发明中，所述控制处理电路13可进一步在所述正常模式或所述休眠模式以相同或不同的采样数目读取所述检测单元111的测量数据。In the present invention, the control processing circuit 13 may further read the measurement data of the detection unit 111 with the same or different sampling numbers in the normal mode or the sleep mode.
一实施例中，在正常模式下所述控制处理电路13可读取所有所述检测单元111的测量数据，并相对每一帧期间报告一次触碰事件或触碰坐标。请参照图4所示，其显示本发明实施例的电容式触控装置1在正常模式的示意图；另一实施例中，在正常模式下所述控制处理电路13可读取第一部份111a的所述检测单元111的所有检测单元111的测量数据并读取第二部份111b的所述检测单元111的部份检测单元111的测量数据；其中，所述第一部分111a例如为触碰点Tc周围预设范围而所述第二部份111b例如为所述触控面板11中，所述第一部分111a以外的全部或部分检测单元111；借此，由于所述控制处理电路13可仅读取所述第一部份111a以外的部份检测单元111的测量数据，因此可在正常模式下进行省电，即部份休眠模式。In one embodiment, in the normal mode, the control processing circuit 13 can read the measurement data of all the detection units 111 and report a touch event or touch coordinates for each frame period. Please refer to FIG. 4, which shows a schematic diagram of the capacitive touch device 1 in the normal mode of the embodiment of the present invention; in another embodiment, the control processing circuit 13 can read the first part 111a in the normal mode. The measurement data of all detection units 111 of the detection unit 111 and read the measurement data of some detection units 111 of the detection unit 111 of the second part 111b; wherein, the first part 111a is, for example, a touch point The preset range around Tc and the second part 111b is, for example, all or part of the detection units 111 other than the first part 111a in the touch panel 11; thereby, since the control processing circuit 13 can only read The measurement data of the part of the detection unit 111 other than the first part 111a is taken, so power saving can be performed in the normal mode, that is, the partial sleep mode.
综上所述，本发明中，可通过于休眠模式或部分休眠模式使所述控制处理电路13仅读取部份检测单元111的测量数据，以节省耗能。To sum up, in the present invention, the control processing circuit 13 can only read part of the measurement data of the detection unit 111 in the sleep mode or the partial sleep mode, so as to save energy consumption.
请参照图5所示，其显示本发明第一实施例的电容式触控装置的运作示意图。本实施例中，正常模式下，所述控制处理电路13以第一采样数目SN1读取所述检测单元1111-111n的测量数据；休眠模式下，所述控制处理电路13以第二采样数目SN2读取所述检测单元1111-111n的测量数据，以于所述休眠模式下节省耗能；其中，所述第二采样数目SN2低于所述第一采样数目SN1。本实施例中，所述控制处理电路13始终以相同的采样频率（samplingfrequency）读取每一个检测单元111的多个笔测量数据。Please refer to FIG. 5 , which shows a schematic diagram of the operation of the capacitive touch device according to the first embodiment of the present invention. In this embodiment, in the normal mode, the control processing circuit 13 reads the measurement data of the detection units 1111 -111n with the first sampling number SN1 ; The sampling number SN2 reads the measurement data of the detection units 1111 -111n to save energy consumption in the sleep mode; wherein, the second sampling number SN2 is lower than the first sampling number SN1 . In this embodiment, the control processing circuit 13 always reads multiple pen measurement data of each detection unit 111 at the same sampling frequency (sampling frequency).
图5A显示正常模式下的操作示意图。当所述控制处理电路13判断存在至少一个手指碰触所述触控面板11时（如第7图的正常模式），所述控制处理电路13以所述采样频率读取每一检测单元1111-111n第一采样数目SN1的测量数据；其中，所述第一采样数目SN1例如可为128，但并不以此为限。帧期间中，所述控制处理电路13扫描完所有检测单元111并报告触控信息。FIG. 5A shows a schematic diagram of operation in normal mode. When the control processing circuit 13 determines that there is at least one finger touching the touch panel 11 (such as the normal mode in FIG. 7), the control processing circuit 13 reads each detection unit 111 at the sampling frequency1 -111n the measurement data of the first sampling numberSN1 ; wherein, the first sampling numberSN1 may be 128, for example, but not limited thereto. During the frame period, the control processing circuit 13 scans all the detection units 111 and reports touch information.
图5B和图5C显示休眠模式下的操作示意图。当所述控制处理电路13判断预设时间没有任何手指碰触所述触控面板11时（如第7图的休眠模式），所述控制处理电路13以所述采样频率读取每一检测单元1111-111n第二采样数目SN2的测量数据；其中，所述第二采样数目SN2例如可为64或32，但并不以此为限。本实施例中，由于所述正常模式和所述休眠模式均具有相同的帧期间，所述休眠模式下所述控制处理电路13读取完所述第二采样数目的测量数据后即进入闲置状态；例如，图5B显示所述控制处理电路13可读取完所有检测单元1111-111n的测量数据后才进入闲置状态；图5C显示所述控制处理电路13可读取每个检测单元111的测量数据后即进入闲置状态。由于所述控制处理电路13以相同采样频率读取较少采样数目的测量数据，故输入所述驱动信号Sd和读取所述测量数据Sm的时间缩短了，而可于每一个帧期间节省耗能（例如在图5B和图5C中的闲置期间进行省电）。FIG. 5B and FIG. 5C show schematic diagrams of operation in sleep mode. When the control processing circuit 13 judges that there is no finger touching the touch panel 11 for a preset time (such as the sleep mode in FIG. 7), the control processing circuit 13 reads each detection unit at the sampling frequency 1111 -111n are the measurement data of the second sampling number SN2 ; wherein, the second sampling number SN2 can be 64 or 32, for example, but not limited thereto. In this embodiment, since the normal mode and the sleep mode both have the same frame period, the control processing circuit 13 enters an idle state after reading the measurement data of the second sampling number in the sleep mode ; For example, FIG. 5B shows that the control processing circuit 13 can read the measurement data of all detection units 1111 -111n before entering the idle state; FIG. 5C shows that the control processing circuit 13 can read each detection unit 111 It enters the idle state after receiving the measured data. Since the control processing circuit 13 reads the measurement data with a smaller number of samples at the same sampling frequency, the time for inputting the drive signal Sd and reading the measurement data Sm is shortened, thereby saving power consumption during each frame period. capabilities (such as power saving during idle periods in Figures 5B and 5C).
另一实施例中，所述休眠模式下所述控制处理电路13可以以所述第二采样数目SN2仅读取部份所述检测单元111的测量数据，如图3A和图3B所示的斜线区域，以进一步提高省电效果。同理，所述休眠模式下，所述控制处理电路13于相邻帧期间以所述第二采样数目SN2读取不同部份的所述检测单元111的测量数据。In another embodiment, in the sleep mode, the control processing circuit 13 can only read part of the measurement data of the detection unit 111 with the second sampling number SN2 , as shown in FIG. 3A and FIG. 3B Slashed areas to further improve power saving. Similarly, in the sleep mode, the control processing circuit 13 reads different parts of the measurement data of the detection unit 111 with the second sampling number SN2 during adjacent frames.
详而言之，第一实施例中，在休眠模式下所述控制处理电路13可以较低的采样数目读取所有或部分检测单元111的测量数据以确定触控信息，借此达到节省耗能的目的。In detail, in the first embodiment, in the sleep mode, the control processing circuit 13 can read all or part of the measurement data of the detection unit 111 with a relatively low number of samples to determine the touch information, thereby saving energy consumption the goal of.
图5D和图5E显示正常模式下的另一操作示意图（即部分休眠模式）。当所述控制处理电路13判断存在至少一个手指碰触所述触控面板11时则进入正常模式，然而此时所述控制处理电路13以所述采样频率读取第一部份111a的所述检测单元111所述第一采样数目SN1的测量数据（例如检测单元1113和1114）并以所述采样频率读取第二部份111b的所述检测单元111第二采样数目SN2的测量数据（例如检测单元1113和1114以外的检测单元），以于正常模式下也能达到节省耗能的目的。本实施例中，所述第一部份111a为触碰点Tc周围预设范围而所述第二部份111b为所述第一部份111a以外的检测单元111（例如第7图的部分休眠模式）。本实施例中，由于所述正常模式和所述部分休眠模式均具有相同的帧期间，于读取所述检测单元111的所述第二部份111b的所述检测单元111的测量数据时，所述控制处理电路13读取完所述第二采样数目SN2的所述测量数据后即进入闲置状态；例如，图5D显示所述控制处理电路13可读取完所有检测单元111的测量数据后才进入闲置状态；图5E显示所述控制处理电路13可读取所述第二部份111b中的每个检测单元111的测量数据（例如检测单元1113和1114以外的检测单元）后即进入闲置状态而读取所述第一部份111a中的检测单元111的测量数据后（例如检测单元1113和1114）没有闲置状态。FIG. 5D and FIG. 5E show another schematic diagram of operation in normal mode (ie, partial sleep mode). When the control processing circuit 13 judges that there is at least one finger touching the touch panel 11, it enters the normal mode, but at this time the control processing circuit 13 reads the The measurement data of the first sample number SN1 of the detection unit 111 (such as detection units 1113 and 1114 ) and read the second part 111b of the second sample number SN2 of the detection unit 111 at the sampling frequency Measuring data (such as detection units other than the detection units1113 and1114 ), so as to achieve the purpose of saving energy consumption even in the normal mode. In this embodiment, the first part 111a is the preset range around the touch point Tc and the second part 111b is the detection unit 111 outside the first part 111a (for example, the part sleep in FIG. 7 model). In this embodiment, since both the normal mode and the partial sleep mode have the same frame period, when reading the measurement data of the detection unit 111 of the second part 111b of the detection unit 111, The control processing circuit 13 enters an idle state after reading the measurement data of the second sampling number SN2 ; for example, FIG. 5D shows that the control processing circuit 13 can finish reading the measurement data of all detection units 111 After entering the idle state; FIG. 5E shows that the control processing circuit 13 can read the measurement data of each detection unit 111 in the second part 111b (such as detection units other than detection units1113 and1114 ). That is, there is no idle state after entering the idle state and reading the measurement data of the detection units 111 in the first part 111 a (for example, the detection units 1113 and 1114 ).
另一实施例中，所述控制处理电路13可将所述触控面板11分成三个部份分别以不同的采样数目读取所述检测单元的多个笔测量数据，例如图7的另一部分休眠模式中，所述控制处理电路13以所述第一采样数目SN1读取第一部份111a的所述检测单元111的测量数据、以所述第二采样数目SN2读取第二部份111b的所述检测单元111的测量数据并以第三采样数目SN3读取第三部份111c的所述检测单元111的测量数据；其中，所述第三采样数目SN3可介于所述第一采样数目SN1和所述第二采样数目SN2间，且所述第三部份111c较佳介于所述第一部分111a和所述第二部份111b间。借此，当手指于下一张帧期间移出所述第一部分111a外时，所述控制处理电路13可较即时地检测触碰事件；其中，所述第三部份111c可根据不同实施例适当选择。In another embodiment, the control processing circuit 13 can divide the touch panel 11 into three parts to read multiple pen measurement data of the detection unit with different sampling numbers, such as the other part of FIG. 7 In the sleep mode, the control processing circuit 13 reads the measurement data of the detection unit 111 of the first part 111a with the first sampling numberSN1 , and reads the measurement data of the second part 111a with the second sampling numberSN2 . Part 111b of the measurement data of the detection unit 111 and read the measurement data of the detection unit 111 of the third part 111c with a third sampling numberSN3 ; wherein, the third sampling numberSN3 can be between the between the first sample number SN1 and the second sample number SN2 , and the third portion 111c is preferably between the first portion 111a and the second portion 111b. Thereby, when the finger moves out of the first part 111a during the next frame, the control processing circuit 13 can detect the touch event in real time; wherein, the third part 111c can be suitably choose.
请参照图6所示，其显示本发明第二实施例的电容式触控装置的运作示意图。本实施例中，正常模式下所述控制处理电路13于第一帧期间以第一采样数目SN1读取所述检测单元111的测量数据且休眠模式下所述控制处理电路13于第二帧期间以第二采样数目SN2读取所述检测单元111的测量数据；其中，所述第二采样数目SN2低于所述第一采样数目SN1且所述第二帧期间短于所述第一帧期间。本实施例中，所述控制处理电路13同样始终以相同的采样频率读取每个等检测单元111的多个笔测量数据且每一帧期间不包含闲置状态。Please refer to FIG. 6 , which shows a schematic diagram of the operation of the capacitive touch device according to the second embodiment of the present invention. In this embodiment, in the normal mode, the control processing circuit 13 reads the measurement data of the detection unit 111 with the first sampling number SN1 during the first frame, and in the sleep mode, the control processing circuit 13 reads the measurement data in the second frame during which the measurement data of the detection unit 111 is read with a second sampling number SN2 ; wherein, the second sampling number SN2 is lower than the first sampling number SN1 and the second frame period is shorter than the during the first frame. In this embodiment, the control processing circuit 13 also always reads a plurality of pen measurement data of each of the detection units 111 at the same sampling frequency, and each frame period does not include an idle state.
图6A显示正常模式下的操作示意图，本实施例的正常模式与图5A相同，故于此不再赘述。FIG. 6A shows a schematic diagram of the operation in the normal mode. The normal mode in this embodiment is the same as that in FIG. 5A , so it will not be repeated here.
图6B显示休眠模式下的操作示意图。当所述控制处理电路13判断预设时间没有任何手指碰触所述触控面板11时，所述控制处理电路13以所述采样频率读取每一检测单元1111-111n第二采样数目SN2的测量数据。与第一实施例的差异在于，休眠模式下由于所述控制处理电路13改以较低的采样数目读取所述检测单元111的测量数据，因此可缩短帧时间以增加检测即时性；例如图6B的第二帧结束后就直接进入另一个第二帧而所述第二帧不包含闲置时间；借此，可在相同的耗电下增加检测第一次触碰的即时性以结束休眠模式。FIG. 6B shows a schematic diagram of operation in sleep mode. When the control processing circuit 13 determines that there is no finger touching the touch panel 11 within the preset time, the control processing circuit 13 reads the second sampling number of each detection unit 1111 -111n at the sampling frequency Measurement data of SN2 . The difference with the first embodiment is that in sleep mode, since the control processing circuit 13 reads the measurement data of the detection unit 111 with a lower sampling number, the frame time can be shortened to increase the immediacy of detection; After the second frame of 6B ends, it directly enters another second frame and the second frame does not include an idle time; thereby, the immediacy of detecting the first touch can be increased under the same power consumption to end the sleep mode .
另一实施例中，所述休眠模式下所述控制处理电路13也可以以所述第二采样数目SN2仅读取部份所述检测单元111的测量数据，如图3A和3B所示的斜线区域，以进一步提高省电效果。同理，所述休眠模式下，所述控制处理电路13在相邻的第二帧期间可以以所述第二采样数目SN2读取不同部份的所述检测单元111的测量数据。In another embodiment, in the sleep mode, the control processing circuit 13 can also read only part of the measurement data of the detection unit 111 with the second sampling number SN2 , as shown in FIGS. 3A and 3B Slashed areas to further improve power saving. Similarly, in the sleep mode, the control processing circuit 13 can read different parts of the measurement data of the detection unit 111 with the second sampling number SN2 during the second adjacent frame period.
详而言之，第二实施例中，在休眠模式下所述控制处理电路13可以以较低的采样数目读取所有或部分检测单元111的测量数据以确定触控信息，借此缩短结束休眠模式的反应时间。In detail, in the second embodiment, in the sleep mode, the control processing circuit 13 can read all or part of the measurement data of the detection unit 111 with a lower sampling number to determine the touch information, thereby shortening the time of ending the sleep mode. Mode response time.
图6C显示正常模式的另一操作示意图（即部分休眠模式下）。当所述控制处理电路13判断存在至少一个手指碰触所述触控面板11时则进入正常模式，然而此时所述控制处理电路13于第三帧期间以所述第一采样数目SN1读取第一部份111a的所述检测单元111的测量数据（例如检测单元1113和1114）并以所述第二采样数目SN2读取第二部份111b的所述检测单元111的测量数据（例如检测单元1113和1114以外的检测单元），以于正常模式下也能达到节省耗能的目的；其中，由于所述控制处理电路13于所述触控面板11的部分区域以较低的采样数目读取测量数据，所述第三帧期间短于所述第一帧期间而长于所述第二帧期间。同理，本实施例中，所述第一部份111a可为触碰点Tc周围的预设范围而所述第二部份111b可为所述第一部份111a以外的全部或部份检测单元111。同理，本实施例中所述检测单元1111-111n也可被区分为三个以上的部份并分别以不同的采样数目读取不同部部分的测量数据。此外，本发明说明中，所述触碰点Tc例如可为前一次帧期间的扫描所获得的指示物坐标；其中，所述前一次帧期间可操作于本发明所述的正常模式、休眠模式或部分休眠模式。所述电容式触控装置1较佳包含储存单元用以储存所述指示物坐标。FIG. 6C shows another schematic diagram of operation in normal mode (ie in partial sleep mode). When the control processing circuit 13 judges that there is at least one finger touching the touch panel 11, it enters the normal mode. However, at this time, the control processing circuit13 reads the taking the measurement data of said detection unit 111 of the first part 111a (e.g. detection units1113 and1114 ) and reading the measurement data of said detection unit 111 of the second part111b with said second number of samples SN2 data (such as detection units other than detection units1113 and1114 ), so as to achieve the purpose of saving energy consumption in the normal mode; A lower number of samples reads measurement data, and the third frame period is shorter than the first frame period and longer than the second frame period. Similarly, in this embodiment, the first part 111a can be a preset range around the touch point Tc, and the second part 111b can be all or part of the detection area other than the first part 111a. Unit 111. Similarly, the detection units 1111 - 111n in this embodiment can also be divided into more than three parts and read the measurement data of different parts with different sampling numbers. In addition, in the description of the present invention, the touch point Tc can be, for example, the pointer coordinates obtained by scanning during the previous frame period; wherein, the previous frame period can be operated in the normal mode and sleep mode described in the present invention or partial sleep mode. The capacitive touch device 1 preferably includes a storage unit for storing the coordinates of the pointer.
必须说明的是，虽然本发明各实施例是以互容式电容感测装置作为举例来说明，然而本发明也可用于其他触控感测装置，例如自容式电容感测装置、电阻式感测装置、光学式感测装置等可涵盖触控系统主要操作区域的感测装置上。例如，在内嵌式光学感测装置中，也可根据减少每一个感光单元（cell）所对应的光二极体（photodiode）的曝光时间或者交替切换触控面板的部分感光单元的光二极体进行感光，来达成近似于本发明实施例的省电目的。It must be noted that although the embodiments of the present invention are illustrated with a mutual capacitive sensing device as an example, the present invention can also be applied to other touch sensing devices, such as self-capacitive capacitive sensing devices, resistive sensing devices, etc. Sensing devices such as measuring devices and optical sensing devices can cover the main operating area of the touch system. For example, in the embedded optical sensing device, it can also be performed by reducing the exposure time of the photodiodes corresponding to each photosensitive unit (cell) or alternately switching the photodiodes of some photosensitive units of the touch panel. photosensitivity to achieve the purpose of power saving similar to the embodiment of the present invention.
综上所述，已知电容式触控面板是通过改变扫描频率进行省电，但却有降低反应灵敏度的问题。因此，本发明还提供一种电容式触控装置（图1和图2），其在休眠模式下以及正常模式下均可降低触控面板的整体耗能，而且不会延迟检测第一次触碰发生的检测时间。To sum up, the known capacitive touch panel saves power by changing the scanning frequency, but has the problem of reducing response sensitivity. Therefore, the present invention also provides a capacitive touch device (Fig. 1 and Fig. 2), which can reduce the overall power consumption of the touch panel in sleep mode and normal mode, and will not delay the detection of the first touch. The detection time when the collision occurred.
虽然本发明已通过前述实例披露，但是其并非用以限定本发明，任何本发明所属技术领域中具有通常知识的技术人员，在不脱离本发明的精神和范围内，当可作各种的更动与修改。因此本发明的保护范围当视后附的权利要求所界定的范围为准。Although the present invention has been disclosed by the foregoing examples, it is not intended to limit the present invention. Any skilled person in the technical field to which the present invention belongs may make various modifications without departing from the spirit and scope of the present invention. Move and modify. Therefore, the protection scope of the present invention should be determined by the scope defined by the appended claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310085351.2ACN104063096B (en) | 2013-03-18 | 2013-03-18 | capacitive touch device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310085351.2ACN104063096B (en) | 2013-03-18 | 2013-03-18 | capacitive touch device |
| Publication Number | Publication Date |
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| CN104063096Atrue CN104063096A (en) | 2014-09-24 |
| CN104063096B CN104063096B (en) | 2017-05-24 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201310085351.2AExpired - Fee RelatedCN104063096B (en) | 2013-03-18 | 2013-03-18 | capacitive touch device |
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| CN (1) | CN104063096B (en) |
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| CN106951114A (en)* | 2016-01-07 | 2017-07-14 | 北京小米移动软件有限公司 | Scan control method and device, electronic equipment |
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