【考案の詳細な説明】〔産業上の利用分野〕 本考案は柱上開閉器を制御する事故捜査器にア
ンテナ付送受信手段を付加した柱上事故捜査装置
に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a pole-mounted accident investigation device in which a transmitting/receiving means with an antenna is added to an accident investigation device that controls a pole-mounted switch.
従来の事故捜査器は、例えば、実公昭58−7814
号、実公昭58−52839号等に示されており、開閉
器両側の電圧を検出し、その検出結果に基づいて
投入コイルあるいは開放コイルを駆動して開閉器
を投入あるいは開放する。配電線路は区分開閉器
によつて複数の配電区間に区分されており、ま
た、他の配電領域（フイーダー）との間には結合
点開閉器が設けられている。通常、区分開閉器は
投入され、結合点開閉器は開放されているので配
電領域間では電力の融通は行われず、各配電領域
は遮断器を介して変電所バンクに接続されること
により電力の供給を受ける。ここで、ある配電区
間に事故が発生した場合、事故区間の両側の区分
開閉器が開放して以後の投入がロツクされること
により事故点区分が行われる。一方、ロツクされ
た区分開閉器の負荷側の配電区間は隣接する配電
領域との間に設けられた結合点開閉器が投入され
ることによりその配電領域から給電される。これ
によつて停電区間が事故点を含んだ配電区間だけ
に限定される。 Conventional accident investigation equipment, for example,
The voltage on both sides of the switch is detected, and based on the detection result, the closing coil or opening coil is driven to close or open the switch. The distribution line is divided into a plurality of distribution sections by section switches, and connection point switches are provided between the lines and other distribution areas (feeders). Normally, the sectional switch is closed and the node switch is open, so power is not interchanged between distribution areas, and each distribution area is connected to the substation bank via a circuit breaker, so that power can be exchanged between the distribution areas. Receive supply. Here, when an accident occurs in a certain power distribution section, the fault point is separated by opening the section switches on both sides of the fault section and locking the power on from then on. On the other hand, the power distribution section on the load side of the locked sectional switch is supplied with power from the adjacent power distribution region by closing the connection point switch provided between the adjacent power distribution region. This limits the power outage section to only the distribution section that includes the fault point.
ここで、事故捜査器を簡単に説明する。事故捜
査器は予め設定されたＸ時限とＹ時限という２つ
の異なつた時限（Ｘ＞Ｙ）を計時するタイマーを
有しており、この２つの時限は全ての開閉器に共
通した時限である。Ｘ時限は開閉器が開放状態の
ときに開閉器の電源側に電圧が表れたとき計時さ
れる時限であり、このタイムアツプにより開閉器
の投入コイルが動作して開閉器が投入される。開
閉器の投入によつて開閉器の負荷側に電圧が表れ
たときに計時される時限がＹ時限であり、このＹ
時限がタイムアツプされたときにＸ時限の次回の
計時が可能になる。換言すれば、Ｙ時限の計時中
に事故点投入によつて電源がオフになると、Ｙ時
限の計時が中断するため、Ｙ時限のタイマーが初
期状態に復帰できなくなる。その結果、開閉器の
電源側に電圧が表れてもＸ時限の計時が再開しな
いため開閉器の投入が行われなくなる。 Here, we will briefly explain the accident investigation device. The accident investigation device has a timer that measures two different preset time periods, X time period and Y time period (X>Y), and these two time periods are common to all switches. The X time period is a time period that is measured when a voltage appears on the power supply side of the switch when the switch is in an open state, and this time-up causes the closing coil of the switch to operate and close the switch. The time period that is measured when voltage appears on the load side of the switch due to the switch being turned on is the Y time period.
When the time period is timed up, the next time measurement for the X time period becomes possible. In other words, if the power is turned off due to an accident point being turned on while measuring time for the Y time period, the time measurement for the Y time period will be interrupted, and the timer for the Y time period will not be able to return to its initial state. As a result, even if a voltage appears on the power supply side of the switch, the time measurement for the X time period does not restart, and the switch is not turned on.
ここで、変電所（電源）と事故点の間に２台の
開閉器（事故捜査器）ＡおよびＢがある場合の動
作について簡単に説明する（ＡがＢより電源側に
位置する）。 Here, we will briefly explain the operation when there are two switches (accident investigation devices) A and B between the substation (power source) and the accident point (A is located closer to the power source than B).
開閉器Ｂの負荷側に事故が発生すると、変電所
の遮断器に事故電流（負荷電流より大）が流れる
ので遮断状態になつて停電し、開閉器が開放す
る。所定の時限が経過すると、遮断器がオンして
開閉器Ａの電源側に電圧が表れるので開閉器Ａの
事故捜査器ＡがＸ時限を計時し、タイムアツプし
たときに開閉器Ａが投入される。この投入により
事故捜査器ＡがＹ時限を計時し、同時に、開閉器
Ｂの電源側に電圧が表れるので開閉器Ｂの事故捜
査器ＢがＸ時限を計時する。事故捜査器ＢがＸ時
限の計時を終了したときに、事故捜査器ＡがＹ時
限のタイムアツプを行つているのでＹ時限のタイ
マーは初期状態に復帰し、Ｘ時限のタイマーは次
回のカウントレデイ状態にある。このとき、開閉
器Ｂが投入されるので事故捜査器ＢがＹ時限の計
時を開始すると同時に事故点へ投入されたことに
なる。従つて、再び遮断器が遮断し、所定の時限
後に遮断器がオンする。この後、前述した経過を
再び取ることにより開閉器Ａが投入されて開閉器
Ｂの電源側に電圧が表れても事故捜査器ＢのＹ時
限用タイマーが初期状態に復帰していないため、
Ｘ時限の計時が開始されない。従つて、開閉器Ｂ
が投入されず、事故点が区分される。この状態を
開閉器Ｂが投入ロツクの状態にあるという。 When an accident occurs on the load side of switch B, a fault current (larger than the load current) flows through the circuit breaker in the substation, resulting in a cut-off state, resulting in a power outage and the switch opening. When the predetermined time period has elapsed, the circuit breaker is turned on and voltage appears on the power supply side of switch A, so accident investigation device A of switch A measures X time, and when the time is up, switch A is turned on. . Due to this turning on, the accident investigation device A measures the Y time, and at the same time, voltage appears on the power supply side of the switch B, so the accident investigation device B of the switch B measures the X time. When accident investigation device B finishes counting time for period X, accident investigation device A is performing time-up for period Y, so the timer for period Y returns to its initial state, and the timer for period X is ready for the next count. It is in. At this time, since the switch B is turned on, the accident investigation device B is turned on to the accident point at the same time as it starts counting the Y time period. Therefore, the circuit breaker is closed again, and after a predetermined time period, the circuit breaker is turned on. After this, by taking the above-mentioned process again, even if switch A is turned on and voltage appears on the power supply side of switch B, the Y timer of accident investigation device B has not returned to its initial state.
Timing for X period does not start. Therefore, switch B
is not input, and the accident point is classified. In this state, switch B is said to be in the closing lock state.
事故点に対して開閉器Ｂの反対側に位置する開
閉器Ｃは、事故発生以前に対して反対側が電源側
になるが、その電源電圧によつて開閉器Ｂと同じ
ように投入ロツクが行われる。このように開閉器
に事故捜査器を付属させることにより線路電圧を
信号として事故点の区分を自動的に行うことがで
きる。 Switch C, which is located on the opposite side of switch B with respect to the fault point, is on the opposite side to the power supply side compared to before the accident occurred, but the closing lock is performed in the same way as switch B by the power supply voltage. be exposed. By attaching the fault investigation device to the switch in this way, fault points can be automatically identified using the line voltage as a signal.
しかし、従来の事故捜査器によると、事故を修
復した後、投入がロツクされている区分開閉器
（前述した開閉器Ｂ）のロツク状態を解除すると
きは、作業員が昇柱して手動操作によつて解除し
なければならないため、その作業が非常に面倒で
ある。これは事故発生の場合だけに限定されるも
のではなく、事故捜査器の点検等のために強制的
に開放したり、投入したりする場合にも伴う問題
点である。 However, according to conventional accident investigation equipment, after an accident has been repaired, a worker must climb up to a pole and manually operate the sectional switch (switch B mentioned above), which has been locked from closing. This process is extremely troublesome as the user must release the data using the following commands. This problem is not limited to only when an accident occurs, but also occurs when an accident investigation device is forcibly opened or turned on for inspection or the like.
従つて、本考案の目的は昇柱して手動操作しな
くても投入ロツクの解除，強制投入，強制開放を
行うことができる事故捜査器を提供することであ
る。 Therefore, the object of the present invention is to provide an accident investigation device that can release the closing lock, forcibly close, and forcibly open the lock without having to lift it up and manually operate it.
本考案は上記の目的を実現するため、柱上開閉
器に隣接する電源側および負荷側の配電区間の電
圧あるいは電流を検出し、その検出結果に基づい
て前記柱上開閉器の投入および開放を制御し、前
記隣接する電源側あるいは負荷側の配電区間に事
故が発生したとき前記柱上開閉器の投入をロツク
する柱上事故捜査器に、以下の送受信手段を付加
した柱上事故捜査装置を提供する。 In order to achieve the above object, the present invention detects the voltage or current in the power distribution section on the power supply side and the load side adjacent to the pole switch, and turns on and off the pole switch based on the detection results. A pole-mounted accident investigation device that controls and locks the closing of the pole-mounted switch when an accident occurs in the power distribution section on the adjacent power supply side or load side is equipped with a pole-mounted accident investigation device that is equipped with the following transmitting and receiving means. provide.
送信手段は、柱上開閉器に予め定められたアド
レスに対応したアドレス信号と、投入ロツク解除
信号を後述する受信手段に向けて送信する。この
ときの送信信号の送信レベルは対応する柱上開閉
器の事故捜査器によつて受信されるだけで良いの
でレベルを低くすることができる。一方、レベル
を低くすれば、隣接する事故捜査器に受信される
ことはないのでアドレス信号を間違つて入力した
場合でも隣接する事故捜査器が誤動作するのを防
止することができる。 The transmitting means transmits an address signal corresponding to a predetermined address for the pole-mounted switch and a closing lock release signal to a receiving means to be described later. The transmission level of the transmission signal at this time can be lowered because it only needs to be received by the accident investigation device of the corresponding pole-mounted switch. On the other hand, if the level is set low, the signal will not be received by the adjacent accident investigation device, so even if the address signal is input by mistake, it is possible to prevent the adjacent accident investigation device from malfunctioning.
受信手段は、個有のアドレス信号を記憶したメ
モリと、アドレス信号とともに投入ロツク解除信
号を含んだ前記送信手段からの送信信号を受信す
る受信アンテナと、前記個有のアドレスと前記ア
ドレス信号の一致および不一致を検出する比較回
路と、前記一致を検出したとき前記投入ロツク解
除信号に基づいて前記柱上開閉器の投入ロツクを
解除する作動回路を有する。 The receiving means includes a memory that stores a unique address signal, a receiving antenna that receives a transmission signal from the transmitting means that includes an input lock release signal together with the address signal, and a matching between the unique address and the address signal. and a comparison circuit for detecting a mismatch, and an operating circuit for releasing the closing lock of the pole-mounted switch based on the closing lock release signal when the coincidence is detected.
即ち、本考案の柱上事故捜査装置は以下の特徴
を有する。 That is, the pole accident investigation device of the present invention has the following features.
(1) 各電柱（即ち、各柱上事故捜査器）にアドレ
スを付す。(1) Attach an address to each utility pole (i.e., each pole-mounted accident investigation device).
(2) 各柱上事故捜査器の制御は１個ずつ行われ
る。即ち、複数の柱上事故捜査器がまとめて制
御されるようなことはない。(2) Each pole-mounted accident investigation device is controlled one by one. That is, a plurality of pole-mounted accident investigation devices are not controlled all at once.
(3) 柱上事故捜査器を１個ずつ制御するため、電
柱のアドレスをその都度送信回路に入力する。(3) In order to control the pole-mounted accident investigation devices one by one, the address of the utility pole is input into the transmission circuit each time.
(4) 制御される柱上事故捜査器が受信する受信信
号は他の柱上事故捜査器が受信することができ
ないレベルで送信されたものであることが好ま
しい。(4) It is preferable that the received signal received by the controlled pole-mounted accident investigation device is transmitted at a level that cannot be received by other pole-mounted accident investigation devices.
(5) 柱上事故捜査器は受信信号中のアドレス信号
と自己の個有のアドレスを比較し、一致したと
きだけ投入ロツク解除信号に基づいて制御され
る。即ち、複数のアドレス信号から自己のアド
レス信号を選択するようなことはしない。(5) The pole-mounted accident investigation device compares the address signal in the received signal with its own unique address, and is controlled based on the input lock release signal only when they match. That is, it does not select its own address signal from a plurality of address signals.
以下、本考案の柱上事故捜査装置を詳細に説明
する。 The pillar accident investigation device of the present invention will be explained in detail below.
第１図は本考案の一実施例を示し、制御される
開閉器１０が個有のアドレスコードを有する電柱
１４の腕金１５に固定されている。配電線路１１
は耐張碍子１２によつて腕金１５に張架され、開
閉器用リード線１３を介して開閉器１０に引き込
まれている。電柱１４には受信アンテナ２１を有
した柱上事故捜査器２０（受信回路を内蔵してい
る）が取り付けられ、地上の作業者が有する送信
器３０の送信アンテナ３１から送信される制御信
号を入力処理して開閉器１０を制御するように構
成されている。 FIG. 1 shows an embodiment of the invention, in which a controlled switch 10 is fixed to a arm 15 of a utility pole 14 having a unique address code. Power distribution line 11
is stretched around a cross arm 15 by a tension insulator 12, and is drawn into the switch 10 via a switch lead wire 13. A pole-mounted accident investigation device 20 (with a built-in receiving circuit) having a receiving antenna 21 is attached to the utility pole 14, and inputs a control signal transmitted from the transmitting antenna 31 of a transmitter 30 owned by a worker on the ground. It is configured to process and control the switch 10.
第２図イ，ロは送信器３０および柱上事故捜査
器２０に内蔵される受信回路２９を示している。
送信器３０は、開閉器１０の投入、開放、投入ロ
ツク解除、柱上事故捜査器２０の内部回路の点検
等の各操作を指令するため、作業者の指令に応じ
て指令信号を出力する指令回路３４（例えば、キ
ーボードの操作によつて指令される）と、制御さ
れる開閉器１０が据え付けられている電柱１４の
アドレスを入力したとき（例えば、作業者がキー
ボードを操作することによりアドレスを入力す
る）、アドレス信号を出するアドレス信号回路３
２と、アドレス信号を入力して電柱１４のアドレ
スを記憶するメモリー３３と、メモリー３３の記
憶内容（アドレス）と指令回路３４の指令信号を
入力して作業者が制御する開閉器の制御の種類に
応じた制御記号（アドレスコードと指令コードを
含む）を出力する制御回路３５と、制御信号を変
調する変調回路３６と、変調信号をアンテナ３１
を介して送信するためアンテナ３１に出力する出
力回路３７を有している。また、受信回路２９は
受信アンテナ２１で受信した変調信号を増幅する
増幅回路２４と、増幅した変調信号を復調して前
記制御信号を出力する復調回路２５と、取り付け
られる電柱１４の個有のアドレスを入力したアド
レスに応じたアドレス信号を出力するアドレス信
号回路２２と、アドレス信号を入力して個有のア
ドレスを記憶するメモリー２３と、メモリー２３
の記憶内容と復調回路２５の制御信号を入力し、
メモリー２３の記憶アドレスと制御信号中の受信
アドレスが一致したとき指令コードを判読して制
御の種類に応じた信号、即ち、投入信号、開放信
号、投入ロツク解除信号等を出力する判定回路２
６と、事故の無い通常のときは配電線路の線路状
態に応じた線路信号（線路電圧あるいは線路電
流）を入力して該信号に応じて開閉器１０を制御
する信号（例えば、投入信号、開放信号、投入ロ
ツク信号等）を出力し、事故修復後に判定回路２
６が投入ロツク解除信号を出力したとき投入ロツ
クを解除する解除信号を出力する事故捜査器回路
２７と、判定回路２６あるいは事故捜査器回路２
７の出力に応じて開閉器１０を制御する作動回路
２８を有している。 2A and 2B show the transmitter 30 and the receiving circuit 29 built into the pole-mounted accident investigation device 20.
The transmitter 30 outputs a command signal in response to an operator's command in order to command various operations such as closing, opening, releasing the closing lock of the switch 10, and inspecting the internal circuit of the pole-mounted accident investigation device 20. When the operator inputs the address of the utility pole 14 on which the circuit 34 (for example, commanded by operating the keyboard) and the switch 10 to be controlled is installed (for example, the operator inputs the address by operating the keyboard) address signal circuit 3 that outputs address signals
2, a memory 33 that stores the address of the utility pole 14 by inputting an address signal, and the type of control of the switch that is controlled by the operator by inputting the stored contents (address) of the memory 33 and the command signal of the command circuit 34. a control circuit 35 that outputs a control symbol (including an address code and a command code) according to
It has an output circuit 37 for outputting to the antenna 31 for transmission via the antenna. The receiving circuit 29 also includes an amplifying circuit 24 that amplifies the modulated signal received by the receiving antenna 21, a demodulating circuit 25 that demodulates the amplified modulated signal and outputs the control signal, and a unique address of the utility pole 14 to which it is attached. an address signal circuit 22 that outputs an address signal according to an input address; a memory 23 that inputs the address signal and stores a unique address;
input the memory contents and the control signal of the demodulation circuit 25,
A determination circuit 2 that reads the command code and outputs a signal depending on the type of control, i.e., a closing signal, an open signal, a closing lock release signal, etc., when the stored address in the memory 23 matches the received address in the control signal.
6, when there is no accident, a line signal (line voltage or line current) corresponding to the line condition of the distribution line is input and a signal (for example, closing signal, opening signal) is input to control the switch 10 according to the signal. signal, closing lock signal, etc.) and outputs the judgment circuit 2 after the accident is repaired.
an accident investigation device circuit 27 that outputs a release signal for releasing the making lock when the making lock release signal is output by the device 6; and a judgment circuit 26 or the accident investigation device circuit 2.
It has an operating circuit 28 that controls the switch 10 according to the output of the switch 7.
以上の構成において、その操作を説明するに、
各電柱１４の柱上事故捜査器２０はアドレス信号
回路２２を介してその電柱１４個有のアドレスを
メモリー２３に記憶する（例えば、営業所におい
て入力する）ことによつて各電柱１４にアドレス
付けが行われる（アドレス付けが行われた後、電
柱１４に取り付けられる）。次に、制御対象とな
つた開閉器１０の電柱１４のアドレスを送信器３
０のメモリー３３にアドレス信号回路３２を介し
て記憶させる。作業者が送信器３０の指令回路３
４を介して開閉器１０の制御を指令すると、アド
レスコードと指令コードを有する制御信号が制御
回路３５から出力され、変調された後送信アンテ
ナ３１より送信される。電柱１４に取り付けられ
た柱上事故捜査器２０の受信回路２９は、受信ア
ンテナ２１によつて変調された制御信号を受信し
て増幅回路２４、復調回路２５を介して判定回路
２６が制御信号を入力する。判定回路２６は制御
信号中のアドレスコードによりメモリー２３が記
憶しているアドレスと一致しているかどうか判定
し、アドレスが一致しているときだけ指令コード
を判読して制御の種類に応じた信号、即ち、投入
信号、開放信号等を出力し、作動回路２８を介し
て開閉器１０を制御する。投入ロツク解除の場合
は、事故捜査器回路２７をも経由する。尚、作業
が複数になる場合、営業所で作業順位を計画して
その手順を記憶させることができる。また、柱上
開閉器以外に、地中用キヤビネツトや多回路開閉
器等の制御にも適用できる。送信器３０は制御さ
れる柱上事故捜査器２０のみにて受信される送信
パワーを有する送信信号を送信するもので良いの
で、出力の小さいもので良い。 To explain the operation in the above configuration,
The pole accident investigation device 20 of each utility pole 14 assigns an address to each utility pole 14 by storing the addresses of the 14 utility poles in the memory 23 (for example, input at a business office) via the address signal circuit 22. (After being addressed, it is attached to the utility pole 14). Next, the transmitter 3 transmits the address of the utility pole 14 of the switch 10 that is to be controlled.
0 memory 33 via the address signal circuit 32. The operator operates the command circuit 3 of the transmitter 30.
4, a control signal having an address code and a command code is output from the control circuit 35, modulated, and transmitted from the transmitting antenna 31. The reception circuit 29 of the pole-mounted accident investigation device 20 attached to the utility pole 14 receives the control signal modulated by the reception antenna 21, and the determination circuit 26 receives the control signal via the amplifier circuit 24 and the demodulation circuit 25. input. The determination circuit 26 determines whether the address code in the control signal matches the address stored in the memory 23, and only when the addresses match, reads the command code and outputs a signal according to the type of control. That is, it outputs a closing signal, an opening signal, etc., and controls the switch 10 via the operating circuit 28. In the case of releasing the input lock, the process also goes through the accident investigation device circuit 27. If there are multiple tasks to be performed, the sales office can plan the order of the tasks and memorize the procedures. In addition to pole-mounted switches, the present invention can also be applied to control underground cabinets, multi-circuit switches, and the like. The transmitter 30 may be one that transmits a transmission signal having a transmission power that is received only by the controlled pole-mounted accident investigation device 20, so it may be one with a small output.
〔考案の効果〕 以上説明した通り、本考案の柱上事故捜査装置
によれば、以下の効果を奏することができる。[Effects of the Invention] As explained above, the pillar accident investigation device of the present invention can achieve the following effects.
(1) 投入ロツクの解除、強制投入、強制解除する
ときに昇柱しなくても良いので、昇柱する煩わ
しさおよび昇柱時の危険を解消することができ
る。(1) Since there is no need to raise the column when releasing the input lock, forcing the input, or forcing the release, the trouble of raising the column and the dangers of raising the column can be eliminated.
(2) 対象以外の開閉器を誤つて制御しないように
することができる。(2) It is possible to prevent erroneous control of switches other than the target.
(3) 送信器の出力パワーは小さいもので良い。(3) The output power of the transmitter only needs to be small.
第１図は本考案の一実施例を示す説明図、第２
図イ，ロは第１図の実施例における送受信回路を
示すブロツク図である。 符号の説明、１０……開閉器、２０……柱上事
故捜査器、２１……受信アンテナ、２２，３２…
…アドレス信号回路、２３，３３……メモリー、
２４……増幅回路、２５……復調回路、２６……
判定回路、２７……事故捜査器回路、２８……作
動回路、２９……受信回路、３０……送信器、３
１……送信アンテナ、３４……指令回路、３５…
…制御回路、３６……変調回路、３７……出力回
路。 Fig. 1 is an explanatory diagram showing one embodiment of the present invention;
Figures A and B are block diagrams showing the transmitting/receiving circuit in the embodiment of FIG. 1. Explanation of symbols, 10... Switch, 20... Pole-mounted accident investigation device, 21... Receiving antenna, 22, 32...
...Address signal circuit, 23, 33...Memory,
24...Amplification circuit, 25...Demodulation circuit, 26...
Judgment circuit, 27... Accident investigation device circuit, 28... Operating circuit, 29... Receiving circuit, 30... Transmitter, 3
1... Transmission antenna, 34... Command circuit, 35...
...Control circuit, 36...Modulation circuit, 37...Output circuit.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14449181UJPS5849546U (en) | 1981-09-29 | 1981-09-29 | Remote control device for pole-mounted switch |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14449181UJPS5849546U (en) | 1981-09-29 | 1981-09-29 | Remote control device for pole-mounted switch |
| Publication Number | Publication Date |
|---|---|
| JPS5849546U JPS5849546U (en) | 1983-04-04 |
| JPH025631Y2true JPH025631Y2 (en) | 1990-02-09 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14449181UGrantedJPS5849546U (en) | 1981-09-29 | 1981-09-29 | Remote control device for pole-mounted switch |
| Country | Link |
|---|---|
| JP (1) | JPS5849546U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7151807B2 (en) | 2001-04-27 | 2006-12-19 | The Directv Group, Inc. | Fast acquisition of timing and carrier frequency from received signal |
| US7173981B1 (en) | 2001-04-27 | 2007-02-06 | The Directv Group, Inc. | Dual layer signal processing in a layered modulation digital signal system |
| US7184473B2 (en) | 2001-04-27 | 2007-02-27 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
| US7184489B2 (en) | 2001-04-27 | 2007-02-27 | The Directv Group, Inc. | Optimization technique for layered modulation |
| US7209524B2 (en) | 2001-04-27 | 2007-04-24 | The Directv Group, Inc. | Layered modulation for digital signals |
| US7245671B1 (en) | 2001-04-27 | 2007-07-17 | The Directv Group, Inc. | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers |
| US7418060B2 (en) | 2002-07-01 | 2008-08-26 | The Directv Group, Inc. | Improving hierarchical 8PSK performance |
| US7423987B2 (en) | 2001-04-27 | 2008-09-09 | The Directv Group, Inc. | Feeder link configurations to support layered modulation for digital signals |
| US7463676B2 (en) | 2002-10-25 | 2008-12-09 | The Directv Group, Inc. | On-line phase noise measurement for layered modulation |
| US7471735B2 (en) | 2001-04-27 | 2008-12-30 | The Directv Group, Inc. | Maximizing power and spectral efficiencies for layered and conventional modulations |
| US7474710B2 (en) | 2002-10-25 | 2009-01-06 | The Directv Group, Inc. | Amplitude and phase matching for layered modulation reception |
| US7483505B2 (en) | 2001-04-27 | 2009-01-27 | The Directv Group, Inc. | Unblind equalizer architecture for digital communication systems |
| US7502430B2 (en) | 2001-04-27 | 2009-03-10 | The Directv Group, Inc. | Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
| US7502429B2 (en) | 2003-10-10 | 2009-03-10 | The Directv Group, Inc. | Equalization for traveling wave tube amplifier nonlinearity measurements |
| US7512189B2 (en) | 2001-04-27 | 2009-03-31 | The Directv Group, Inc. | Lower complexity layered modulation signal processor |
| US7529312B2 (en) | 2002-10-25 | 2009-05-05 | The Directv Group, Inc. | Layered modulation for terrestrial ATSC applications |
| US7583728B2 (en) | 2002-10-25 | 2009-09-01 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
| US7639759B2 (en) | 2001-04-27 | 2009-12-29 | The Directv Group, Inc. | Carrier to noise ratio estimations from a received signal |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4964841A (en)* | 1972-10-28 | 1974-06-24 | ||
| JPS56119596A (en)* | 1980-02-26 | 1981-09-19 | Nec Corp | Control signal generator |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7483495B2 (en) | 2001-04-27 | 2009-01-27 | The Directv Group, Inc. | Layered modulation for digital signals |
| US7502430B2 (en) | 2001-04-27 | 2009-03-10 | The Directv Group, Inc. | Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
| US7184473B2 (en) | 2001-04-27 | 2007-02-27 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
| US7184489B2 (en) | 2001-04-27 | 2007-02-27 | The Directv Group, Inc. | Optimization technique for layered modulation |
| US7209524B2 (en) | 2001-04-27 | 2007-04-24 | The Directv Group, Inc. | Layered modulation for digital signals |
| US7245671B1 (en) | 2001-04-27 | 2007-07-17 | The Directv Group, Inc. | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers |
| US7639759B2 (en) | 2001-04-27 | 2009-12-29 | The Directv Group, Inc. | Carrier to noise ratio estimations from a received signal |
| US7471735B2 (en) | 2001-04-27 | 2008-12-30 | The Directv Group, Inc. | Maximizing power and spectral efficiencies for layered and conventional modulations |
| US7469019B2 (en) | 2001-04-27 | 2008-12-23 | The Directv Group, Inc. | Optimization technique for layered modulation |
| US7426243B2 (en) | 2001-04-27 | 2008-09-16 | The Directv Group, Inc. | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers |
| US7173981B1 (en) | 2001-04-27 | 2007-02-06 | The Directv Group, Inc. | Dual layer signal processing in a layered modulation digital signal system |
| US7426246B2 (en) | 2001-04-27 | 2008-09-16 | The Directv Group, Inc. | Dual layer signal processing in a layered modulation digital signal system |
| US7423987B2 (en) | 2001-04-27 | 2008-09-09 | The Directv Group, Inc. | Feeder link configurations to support layered modulation for digital signals |
| US7512189B2 (en) | 2001-04-27 | 2009-03-31 | The Directv Group, Inc. | Lower complexity layered modulation signal processor |
| US7483505B2 (en) | 2001-04-27 | 2009-01-27 | The Directv Group, Inc. | Unblind equalizer architecture for digital communication systems |
| US7151807B2 (en) | 2001-04-27 | 2006-12-19 | The Directv Group, Inc. | Fast acquisition of timing and carrier frequency from received signal |
| US7577213B2 (en) | 2002-07-01 | 2009-08-18 | The Directv Group, Inc. | Hierarchical 8PSK performance |
| US7418060B2 (en) | 2002-07-01 | 2008-08-26 | The Directv Group, Inc. | Improving hierarchical 8PSK performance |
| US7463676B2 (en) | 2002-10-25 | 2008-12-09 | The Directv Group, Inc. | On-line phase noise measurement for layered modulation |
| US7474710B2 (en) | 2002-10-25 | 2009-01-06 | The Directv Group, Inc. | Amplitude and phase matching for layered modulation reception |
| US7529312B2 (en) | 2002-10-25 | 2009-05-05 | The Directv Group, Inc. | Layered modulation for terrestrial ATSC applications |
| US7583728B2 (en) | 2002-10-25 | 2009-09-01 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
| US7502429B2 (en) | 2003-10-10 | 2009-03-10 | The Directv Group, Inc. | Equalization for traveling wave tube amplifier nonlinearity measurements |
| Publication number | Publication date |
|---|---|
| JPS5849546U (en) | 1983-04-04 |
| Publication | Publication Date | Title |
|---|---|---|
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