Vertical filter circuit for production of sub-picture

Details Vertical filter circuit for production of sub-picture Vertical filter circuit for production of sub-picture

1994-10-17

1995-09-19

Groody, James J.

Television

Basic receiver with additional function

For display of additional information

348565, H04N 545

Patent

active

054520134

ABSTRACT:
A vertical filter circuit comprises a first shifter connected to an S/P converter, a calculation circuit connected to the first shifter and a second shifter, a buffer memory connected to the calculation circuit, first and second delay circuits each connected to the calculation circuit, and a second shifter connected to the first and second delay circuits. The first delay circuit comprises a first write selector, a first line memory, and a first read selector, all of which are connected in series. The second delay circuit comprises a second write selector, a second line memory, and a second read selector, all of which are connected in series.

REFERENCES:
patent: 4282546 (1981-08-01), Reitmeier
patent: 4665439 (1987-05-01), Naimpally
patent: 4768093 (1988-08-01), Prodan
patent: 4890162 (1989-12-01), McNeely et al.
patent: 5144437 (1992-09-01), Miyauchi

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