Linear image sensor device comprising first and second linear im

Details Linear image sensor device comprising first and second linear im Linear image sensor device comprising first and second linear im

1996-12-04

2000-02-22

Lee, John R.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250234, 358483, 358496, H01N 104, H01L 27148

Patent

active

060282991

ABSTRACT:
A linear image sensor device with at least two lines including linear sensors 10, 20, which device is capable of showing a wide dynamic range. In the linear image sensor device, one linear sensor 10 is made to have a high sensitivity, while the other linear sensor 20 is made to have a low sensitivity. The linear sensors are respectively equipped with readout gates 13, 23 for reading out charges from sensor arrays 12, 22 comprising a number of pixels and CCD analog shift registers 14, 24 for transferring the charges read out. In the other linear sensor 20, analog memories 29a, 29b are provided between the readout gate 23 and the CCD analog shift register 24. Owing to the provision of the analog memories 29a, 29b, the signal outputs OUT1, OUT2 simultaneously occur, which can eliminate a problem coming from the difference in position between the lines.

REFERENCES:
patent: 5101108 (1992-03-01), Gaalema et al.
patent: 5221848 (1993-06-01), Milch
patent: 5267335 (1993-11-01), Mita
patent: 5416611 (1995-05-01), Tandon
patent: 5550651 (1996-08-01), Terajima
patent: 5585620 (1996-12-01), Nakamura et al.

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