Feedback clamp circuit for analog-to-digital conversion

Details Feedback clamp circuit for analog-to-digital conversion Feedback clamp circuit for analog-to-digital conversion

1993-12-14

1996-07-02

Groody, James J.

Television

Image signal processing circuitry specific to television

Dc insertion

348695, 348697, 348257, 348572, H04N 518

Patent

active

055327583

ABSTRACT:
An image processing apparatus includes an analog image signal clamp and an A/D converter that converts the analog image signal into an m bit digital signal. The clamp is controlled in accordance with an n+1 (m>n) bit digital image signal converted by the A/D converter and an n bit digital image signal portion of the m bit digital image signal is processed.

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patent: 5087973 (1992-02-01), Kawahara
patent: 5105276 (1992-04-01), Schrock
patent: 5134487 (1992-07-01), Taguchi et al.
patent: 5191422 (1993-03-01), Cho et al.

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