CN201751937U - Full-screen PSP (PlayStation Portable) converter - Google Patents

Abstract

The utility model provides a full-screen PSP (PlayStation Portable) converter which has larger and more vivid game screen effects, and is characterized in that a singlechip is connected with an analog-to-digital conversion chip by a single wire and an I2C bus to identify an external input signal format, and the I2C bus is used for writing a set value or a change value of a register of the analog-to-digital conversion chip; a plurality of data lines between the analog-to-digital conversion chip and a digital signal processing chip are used for transmitting the converted digital signal; the singlechip is connected with the digital signal processing chip by the single wire and the I2C bus, and the singlechip invokes a preset Setting to rewrite the value of the register of the digital signal processing chip by the I2C bus; a plurality of data lines between a storage chip playing a role in data caching and the digital signal processing chip are connected with an address wire. The digital signal processing chip carries out improvement, 3D compensation processing and video adjustment on motion graphics by adopting a De-Interlace algorithm, thus realizing the adjustment on the graphics parameters.

Description

The PSP converter of full screen display

Technical field

The utility model relates to a kind of PSP converter of converter (hereinafter to be referred as the PSP converter), particularly a kind of full screen display of SONY PSP game machine.

Background technology

As everyone knows, can't demonstration all over the screen after the YPbPr signal of SONY PSP game machine output directly connects televisor and enters game picture.The product of being sold on the market at present that the YPbPr signal is changed into the VGA signal, also all exist enter behind the game picture can't demonstration all over the screen problem.As shown in Figure 1, the part that the image 102 of actual displayed only occupies screen 101 on effective display screen 101 of display 1.This series products all is to have adopted YPbPr to change RGB analog-converted chip, only signal has been carried out simple format conversion, therefore makes the video image quality loss bigger, not only makes the image effect variation, and also has shortcomings such as output resolution ratio is single, poor compatibility.

Summary of the invention

After the YPbPr signal that the purpose of this utility model provides the output of a kind of SONY PSP game machine directly connects televisor and enters game picture, the PSP converter of full screen display image on effective display screen of display, this PSP converter can adapt to the display or the liquid crystal TV set of different user different size, can satisfy the requirement always pursued of recreation fan, make them obtain bigger better game picture, game effect and scene more true to nature.

To achieve these goals, the technical solution adopted in the utility model is, a kind of PSP converter of full screen display is characterized in that, this PSP converter comprises,

Single-chip microcomputer, pin-saving chip, modulus conversion chip, digital signal processing chip, wherein

Single-chip microcomputer is by signal wire, I²The C bus is connected with modulus conversion chip,

Single-chip microcomputer is by control signal wire and I²The C bus is connected with digital signal processing chip,

Pin-saving chip is connected with digital signal processing chip with address wire by many data lines,

Modulus conversion chip is connected with digital signal processing chip by many data lines,

PSP YPbPr signal input modulus conversion chip, modulus conversion chip is with digital signal supplied with digital signal process chip, and digital signal processing chip is exported VDA or HDMI signal.

The PSP converter of described full screen display, it is characterized in that, described digital signal processing chip comprises De-Interlace algorithm, 3D compensation and video adjustment, the digital signal that receives by De-Interlace algorithm, 3D compensation and video adjustment, is exported VDA or HDMI signal in proper order at last.

The effect of said structure unit, the single-chip microcomputer in house software is discerned the form of external input signal by signal wire, handles for the back level and calls and the corresponding setting value of input signal format, and the value of rewriting function register makes it reach desired image effect, I²The C bus is used for writing modulus conversion chip register setting value, perhaps is used for monitoring the variation of modulus conversion chip register value; Modulus conversion chip is used for transmitting the digital signal after the conversion; In image zoom, single-chip microcomputer calls predefined Setting, passes through I²The C bus is come the value of rewrite data signal processing chip register, thereby realizes zoom function; This storage chip plays the effect of metadata cache in data processing; Described digital signal processing chip adopt the De-Interlace algorithm to moving image creeping of carrying out that motion compensation, noise reduction, removal of images exist, sprout wings in the edge or shortcoming such as staggered; Through the 3D compensation deals, strengthen the stereoscopic sensation of image; Pass through the video adjustment again, colourity, brightness, contrast, gray scale and the output signal form and the convergent-divergent etc. of image are adjusted.

Principal feature of the present utility model is to have adopted digital processing technology, realizing having eliminated the shake and the conditions of streaking of rapid movement picture on the basis that image amplifies, picture profile and details is further optimized, and makes the picture of output clear more true to nature.Reached good visual effect, allowed the recreation fan that a kind of sensation on the spot in person is arranged, and well improved the recreation fan if the visual fatigue of playing games and bringing for a long time.

Description of drawings

Fig. 1 is the synoptic diagram at indicator screen top display image of prior art.

Fig. 2 be of the present utility model on indicator screen the synoptic diagram of full screen display image.

Fig. 3 is the theory diagram of video processing circuit of the present utility model.

Fig. 4 is the theory diagram of the circuit of digital signal processing chip shown in Fig. 3.

Embodiment

As shown in Figure 3, the utility model is a kind of PSP converter of full screen display, it is characterized in that, this PSP converter comprises,

Single-chip microcomputer 301, pin-savingchip 302,modulus conversion chip 303, digitalsignal processing chip 304, wherein

Single-chip microcomputer 301 is by signal wire, I²The C bus is connected withmodulus conversion chip 303,

Single-chip microcomputer 301 is by control signal wire and I²The C bus is connected with digitalsignal processing chip 304,

Pin-savingchip 302 is connected with digitalsignal processing chip 304 with address wire by many data lines,

Modulus conversion chip 303 is connected with digitalsignal processing chip 304 by many data lines,

PSP YPbPr signal inputmodulus conversion chip 303,modulus conversion chip 303 are with digital signal supplied with digitalsignal process chip 304, and digitalsignal processing chip 304 is exported VDA or HDMI signals.

As shown in Figure 4, described digitalsignal processing chip 304 comprises De-Interlacealgorithm 401,3D compensation 402 and video adjustment 403, the digital signal that receives adjusts 403 by De-Interlacealgorithm 401,3D compensation 402 and video in proper order, exports VDA or HDMI signal at last.

In Fig. 3, single-chip microcomputer 301 in house softwares are discerned the form of external input signal by signal wire, handle for the back level and call and the corresponding setting value of input signal format, and the value of rewriting function register makes it reach desired image effect.I²The C bus is used for writingmodulus conversion chip 303 register setting values, also can be used for monitoring the variation ofmodulus conversion chip 303 register values.

In Fig. 3, many data lines (among the figure with single line and digital signal representation) are arranged betweenmodulus conversion chip 303 and the digitalsignal processing chip 304, be used for transmitting the digital signal after the conversion.

In Fig. 3,storage chip 302 plays the effect of metadata cache in data processing,

In Fig. 3, in image zoom, single-chip microcomputer 301 calls predefined Setting, passes through I²The C bus is come the value of rewrite datasignal processing chip 304 registers, thereby realizes zoom function.The effect that image amplifies as shown in Figure 2, theimage 202 of actual displayed occupies the whole ofscreen 201 oneffective display screen 201 ofdisplay 2, demonstration promptly all over the screen.

In Fig. 4, shortcoming such as digital signal processing chip adopts that 401 pairs of moving images of De-Interlace algorithm carry out that motion compensation, noise reduction, removal of images exist creeps, sprout wings in the edge or staggered; Handle through3D compensation 402 again, strengthen the stereoscopic sensation of image; Video adjustment 403 is mainly adjusted colourity, brightness, contrast, gray scale and the output signal form and the convergent-divergent etc. of image.Single-chip microcomputer 301 changes parameters such as the colourity, brightness, contrast, gray scale of image by the value of rewriting corresponding function register, single-chip microcomputer 301 is by calling different setting rewriting signal forms, the value of processing capacity register, reach the resolution that changes outputting VGA signal, thereby adapt to the display of different size.Image zoom also is based on the amplification that same digital processing mechanism realizes image.

Realize that the switching of image zoom and VGA signal resolution realizes handoff functionality by single-chip microcomputer 301 external control buttons (not drawing among the figure).The resolution that the utility model PSP converter is supported has 640x480@60Hz, 1024x768@60Hz, 1280x768@60Hz, 1280x1024@60Hz, 1440x900@60Hz etc.If output signal changes into the HDMI signal by the HDMI transmitting chip again with the form output of digital signal, just can support full HD LCD TV.

The general analog to digital conversion IC that adopts becomes digital signal to analog signal conversion in processing system for video, again by hardware and software to digital signal be optimized, processes such as filtering, programmable video adjustment correction, single-chip microcomputer is optimized image according to the predefined value of software and handles and convergent-divergent.Single-chip microcomputer carries out unified monitoring and management to modulus conversion chip, digital signal processing chip in this process, and is undistorted to guarantee enlarged image output, and can arbitrarily carry out the switching of convergent-divergent.

The utility model is a kind of zoom technology of analog video image, become digital signal by analog to digital conversion after, through scm software it adjust is revised again, reach desirable effect all over the screen.Carry out convergent-divergent in the value of adjusting the corresponding effector of digital processing chip by the default Setting of software, adjust the resolution output of different VGA signal format on this basis, on computer monitor, carry out demonstration all over the screen.Carry out convergent-divergent in the value of adjusting the corresponding function register of digital processing chip by the default Setting of software, on televisor, carry out demonstration all over the screen by the HDMI transmitting chip with the output of HDMI signal format on this basis.

Claims (1)

1. the PSP converter of a full screen display is characterized in that, this PSP converter comprises,

Single-chip microcomputer (301), pin-saving chip (302), modulus conversion chip (303), digital signal processing chip (304), wherein

Single-chip microcomputer (301) is by signal wire, I²The C bus is connected with modulus conversion chip (303),

Single-chip microcomputer (301) is by control signal wire and I²The C bus is connected with digital signal processing chip (304),

Pin-saving chip (302) is connected with digital signal processing chip (304) with address wire by many data lines,

Modulus conversion chip (303) is connected with digital signal processing chip (304) by many data lines,

PSP YPbPr signal input modulus conversion chip (303), modulus conversion chip (303) is with digital signal supplied with digital signal process chip (304), and digital signal processing chip (304) is exported VDA or HDMI signal.

Images