发明名称 |
VERFAHREN ZUM UMWANDELN VON EMPFANGENEM LICHT IN DIGITALE IMPULSSIGNALE UND VORRICHTUNG ZUR DURCHFUEHRUNG DES VERFAHRENS |
摘要 |
<p>Circuitry for digitizing received light into a digital pulsating signal, including a photodiode operable in response to light intensity for passing current to a capacitor for developing a voltage level thereacross. A voltage comparator with a hysteresis responds to the magnitude of the capacitor voltage level for tripping the comparator's output between a HIGH and LOW state which directs capacitor discharge to cycle the comparator output in a pulsating manner. In a preferred embodiment, the circuitry is powered by a flash storage capacitor along a pair of conductors which serve both to power the circuitry and to receive pulsating current levels indicating voltage comparator switching. The current levels are sensed and counted for producing a binary count output of received light energy. In another embodiment, the conductors also serve to carry a trigger signal for directing flash initiation.</p> |
申请公布号 |
DE2951128(A1) |
申请公布日期 |
1980.07.17 |
申请号 |
DE19792951128 |
申请日期 |
1979.12.19 |
申请人 |
ROLLEI-WERKE FRANKE & HEIDECKE GMBH & CO KG |
发明人 |
WIRD SPAETER GENANNT WERDEN |
分类号 |
G03B7/091;G01J1/44;G01J1/46;G03B15/05;H03M1/50;H03M1/54;(IPC1-7):03B15/05 |
主分类号 |
G03B7/091 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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