JPH02136235U - - Google Patents
Info
- Publication number
- JPH02136235U JPH02136235U JP4636489U JP4636489U JPH02136235U JP H02136235 U JPH02136235 U JP H02136235U JP 4636489 U JP4636489 U JP 4636489U JP 4636489 U JP4636489 U JP 4636489U JP H02136235 U JPH02136235 U JP H02136235U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output signal
- preset counter
- frequency dividing
- oscillation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Shutters For Cameras (AREA)
- Liquid Crystal (AREA)
Description
第１図は本考案に係るマルチシヤツター駆動回
路の一実施例を示す構成説明図。
１……カメラ、２……入力回路、３……ラツチ
回路、４……発振回路、４ａ……ナンド回路、４
ｂ，４ｃ……モノマルチバイブレーター回路、５
……プリセツトカウンター回路、６……アンド回
路、７……分周回路、８……インバーター回路、
９……プリセツトカウンター回路、１０……アン
ド回路、１１……オートリセツト回路、１２……
アンド回路、１３……液晶駆動回路、１３ａ……
ラツチ回路、１３ｂ……発振回路、１３ｃ，１３
ｄ……バツフアー回路、１４……液晶、１４ａ，
１４ｂ……液晶の電極。
第２図２ａ−２ｌはこの考案の回路の各部振号
波形である。
２ａ……入力回路２の出力波形、２ｂ……ラツ
チ回路３の出力波形、２ｃ……発振回路４の出力
信号波形、２ｄ……プリセツトカウンター回路５
の入力波形、２ｅ……プリセツトカウンター
回路５の出力信号波形、２ｆ……分周回路７
のＱ１出力信号波形、２ｇ……分周回路７の
出力信号波形、２ｈ……ラツチ回路１３ａの出力
信号波形、２ｉ，２ｊ……発振回路１３ｂのＱ１
，Ｑ２出力信号波形、２ｋ……インバーター回路
８の出力信号波形、２１……プリセツトカウンタ
ー回路９の出力信号波形。
FIG. 1 is a configuration explanatory diagram showing one embodiment of a multi-shutter drive circuit according to the present invention. 1... Camera, 2... Input circuit, 3... Latch circuit, 4... Oscillator circuit, 4a... NAND circuit, 4
b, 4c... Mono multivibrator circuit, 5
...Preset counter circuit, 6...AND circuit, 7...divider circuit, 8...inverter circuit,
9...Preset counter circuit, 10...AND circuit, 11...auto reset circuit, 12...
AND circuit, 13...Liquid crystal drive circuit, 13a...
Latch circuit, 13b...Oscillation circuit, 13c, 13
d...Buffer circuit, 14...Liquid crystal, 14a,
14b...Liquid crystal electrode. 2a-2l show waveforms of various parts of the circuit of this invention. 2a... Output waveform of input circuit 2, 2b... Output waveform of latch circuit 3, 2c... Output signal waveform of oscillation circuit 4, 2d... Preset counter circuit 5
2e... Output signal waveform of preset counter circuit 5, 2f... Frequency divider circuit 7
2g...Output signal waveform of the frequency divider circuit 7, 2h...Output signal waveform of the latch circuit 13a, 2i, 2j...Q1 of the oscillation circuit 13b
, Q2 output signal waveform, 2k... Output signal waveform of the inverter circuit 8, 21... Output signal waveform of the preset counter circuit 9.
Claims (1)
これを電気信号に変換するための入力回路と、 発振回路と、 上記発振回路をセツトおよびリセツトするため
のラツチ回路と、 前記発振回路の出力信号を計数し、出力信号を
出すプリセツトカウンター回路と、 前記プリセツトカウンター回路をプリセツトす
るためのアンド回路と、 前記プリセツトカウンター回路の出力信号によ
り液晶の透明と黒の時間比を設定するための分周
回路と、 上記分周回路の出力信号を計数し、設定された
数値と一致した時信号を出し、前記ラツチ回路を
リセツトさせるためのプリセツトカウンター回路
と、 前記分周回路の出力信号により液晶を駆動する
ための液晶駆動回路とを少なくとも具備したこと
を特徴とするマルチシヤツター駆動回路。[Scope of claim for utility model registration] Detects when the camera shutter is pressed,
An input circuit for converting this into an electrical signal, an oscillation circuit, a latch circuit for setting and resetting the oscillation circuit, and a preset counter circuit for counting the output signal of the oscillation circuit and outputting an output signal. , an AND circuit for presetting the preset counter circuit, a frequency dividing circuit for setting the time ratio between transparent and black liquid crystals based on the output signal of the preset counter circuit, and an output signal of the frequency dividing circuit. It includes at least a preset counter circuit for counting and outputting a signal when it matches a set value to reset the latch circuit, and a liquid crystal drive circuit for driving a liquid crystal using the output signal of the frequency dividing circuit. A multi-shutter drive circuit featuring the following features.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4636489U JPH02136235U (en) | 1989-04-20 | 1989-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4636489U JPH02136235U (en) | 1989-04-20 | 1989-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02136235U true JPH02136235U (en) | 1990-11-14 |
Family
ID=31561384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4636489U Pending JPH02136235U (en) | 1989-04-20 | 1989-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02136235U (en) |
-
1989
- 1989-04-20 JP JP4636489U patent/JPH02136235U/ja active Pending
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