Image sensing system with electronic shutter and equal field exp

Details Image sensing system with electronic shutter and equal field exp Image sensing system with electronic shutter and equal field exp

1995-01-19

1997-08-19

Tran, Thai

Television

Camera, system and detail

Solid-state image sensor

348298, 348317, H04N 5335

Patent

active

056593597

ABSTRACT:
A control circuit for a solid state image sensing device which is capable of reading out signal charges in a field storage system and frame storage system and is provided with an electronic shutter for controlling a signal charge storage time in accordance with a shutter pulse for discharging the charges. A time lag is provided between timings of readout gate pulses in each field period for pixels of odd and even rows in a field storage system. A storage time adjusting circuit is provided for correcting the time lag between the signal charge storage times for the pixels in the even and odd rows when the signal charges are read out in the frame storage system. Thus, it is possible to prevent generation of flicker causes by a change in signal charge storage time due to the time lag in each field period between the readout gate pulses for the even field and the odd field in reading out the signal charges in the frame storage system.

REFERENCES:
patent: 4963980 (1990-10-01), Suga et al.
patent: 4984002 (1991-01-01), Kokubo
patent: 5003398 (1991-03-01), Suzuki
patent: 5025319 (1991-06-01), Mutoh et al.
patent: 5051832 (1991-09-01), Losee et al.
patent: 5128767 (1992-07-01), Suzuki et al.
patent: 5438365 (1995-08-01), Yamashita et al.
patent: 5444484 (1995-08-01), Yutani et al.
patent: 5463421 (1995-10-01), Deguchi et al.

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