Method and apparatus for converting an image signal

Details Method and apparatus for converting an image signal Method and apparatus for converting an image signal

1988-01-19

1989-03-21

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 11, H04N 701

Patent

active

048148733

ABSTRACT:
Method and apparatus for converting a hivision TV image signal to a computer terminal image signal are disclosed. Three line memories are provided for three continuous scan lines in a field. Data of one scan line of a hivision TV image signal is written into one of the three line memories and data previously written into other two are read therefrom. A read sampling clock period is set to be 4/5 of a write sampling clock period, and the outputs of the two line memories are linearly interpolated so that the scan lines appear at the same position in first and second fields.

REFERENCES:
patent: 4723163 (1988-02-01), Skinner
patent: 4729012 (1988-03-01), Jose
patent: 4730215 (1988-03-01), Jose
patent: 4733299 (1988-03-01), Glenn

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