Image sensor

Details Image sensor Image sensor

1987-02-25

1989-07-04

Hix, L. T.

Facsimile and static presentation processing

Facsimile

Recording apparatus

250578, H04N 314

Patent

active

048455679

ABSTRACT:
An self-scan type linear image sensor comprises an array of a plurality of phototransistors or photodiodes, a shift register, and current switches operating in response to parallel output signals from the shift register. The shift register is comprised of thyristors and interstage coupling transistors cascade-connecting the thyristors. The current switches are comprised of a first differential current switch executing differential switching operations between parallel output signals from odd-number stages of the shift register and a first separation signal, and a second differential current switch executing differential switching operations between parallel output signals from even-number stages of the shift register and a second separation signal. Current outputs from these current switches are delivered to collectors of the phototransistors, which are connected at emitters, common to an image signal output line.

REFERENCES:
patent: 4011402 (1977-03-01), Koike et al.
patent: 4109284 (1978-08-01), Tompkins
patent: 4145721 (1979-03-01), Beaudouin et al.
patent: 4240116 (1980-12-01), Tomlinson, Jr.
patent: 4567529 (1986-01-01), Yamaguchi et al.
patent: 4686554 (1987-08-01), Ohmi et al.
D. Kasperkovitz "A 20-MHz P-N-N Shift Register with Current Mirror Coupling" IEEE Journal of Solid-State Circuits, vol. SC-10, No. 3, Jun. 1975.

Affiliated with

Also associated with

Rating

Image sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-856726