DRIVE CIRCUIT, ELECTRO-OPTIC DEVICE, ELECTRONIC INSTRUMENT INCLUDING ELECTRO-OPTIC DEVICE, MOVING BODY INCLUDING ELECTRONIC INSTRUMENT

• Main Authors: NUMANO TAKESHI, HARA TARO, MURAKI TOSHIYASU
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2020
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; EDUCATION; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

To supply a state signal indicative of a state of a drive signal generation circuit to an external device without leading to increase in the number of signal lines and number of terminals of a route connecting the drive circuit and an external device.SOLUTION: In a drive circuit 1000, provided are: an input terminal and output terminal connected to an external device 2000; a drive signal generation circuit 400 using a synchronization signal to be input via the input terminal from the external device 2000, and performing signal generation processing for generating a drive signal driving an electro-optic panel 10; a state signal generation circuit 510 generating a state signal indicative of an action state of the drive signal generation circuit 400; a return signal generation circuit 520 generating a return signal overlapping the state signal on the synchronization signal; and an output circuit 530 outputting the return signal to the external device 2000 from the output terminal.SELECTED DRAWING: Figure 1 【課題】駆動回路と外部装置とを結ぶ経路の信号線数、端子数の増加を招くことなく、駆動信号生成回路の状態を示す状態信号を外部装置に供給する。【解決手段】外部装置２０００に接続された入力端子および出力端子と、外部装置２０００から入力端子を介して入力される同期信号を用いて電気光学パネル１０を駆動する駆動信号を生成する信号生成処理を行う駆動信号生成回路４００と、駆動信号生成回路４００の動作状態を示す状態信号を生成する状態信号生成回路５１０と、同期信号に状態信号を重畳した戻り信号を生成する戻り信号生成回路５２０と、出力端子から外部装置２０００へ戻り信号を出力する出力回路５３０とを駆動回路１０００に設けた。【選択図】図１