Video test method and apparatus with incremental scan rate capab

Details Video test method and apparatus with incremental scan rate capab Video test method and apparatus with incremental scan rate capab

1982-09-30

1984-08-14

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358139, H04N 962

Patent

active

044660146

ABSTRACT:
A video test pattern generator is able to be incrementally adjusted in its number of lines and in its line resolution, and at the same time is able to produce a reference frequency. The reference frequency is established at a selected value and offset from the selected value by an amount necessary to coincide with a multiple of a scan line frequency. This can be accomplished despite changes in scan rate and raster pattern. A stroke generation capability is provided and the system can be utilized with programmable character generation and can produce a high-resolution image with a minimum of hardware. Further advantages include the ability of the system to adapt to new or changed equipment to be tested.

REFERENCES:
patent: 4093960 (1978-06-01), Estes
patent: 4137548 (1979-01-01), Kelly
patent: 4364080 (1982-12-01), Vidovic

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