Image sensor and method of reading data out of the same having l

Details Image sensor and method of reading data out of the same having l Image sensor and method of reading data out of the same having l

1992-06-18

1993-10-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

35821326, 257443, H01J 4014

Patent

active

052548481

ABSTRACT:
An image sensor which has a simple construction, and can read a voltage value, not a current value, based on the quantity of light received by the photo diode, and can read charge of the light sensing elements every block. A plurality of light sensing elements each consisting of a photo diode and a blocking diode, make up a block. A plurality of blocks are arrayed. The blocking diodes are connected to a shift register for transferring a bias voltage thereto. The lead wires from the photo diodes are connected to common signal lines. The common signal lines are respectively connected to load capacitors. Potential caused in each common signal line by the charge stored in the corresponding load capacitor is read out.

REFERENCES:
patent: 4565928 (1986-01-01), Yamamoto et al.
patent: 4714836 (1987-12-01), Kitamura et al.
patent: 4746804 (1988-05-01), Kitamura et al.
patent: 5023443 (1991-06-01), Komatsu et al.
patent: 5084747 (1992-01-01), Miyawaki

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