Integrated synchronizing signal separating circuit for generatin

Details Integrated synchronizing signal separating circuit for generatin Integrated synchronizing signal separating circuit for generatin

1989-06-26

1992-07-14

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358153, H04N 945

Patent

active

051307855

ABSTRACT:
An integrated circuit for improved burst gate pulse separation for use in a digital video system that receives a positive composite video signal wherein horizontal, vertical and composite synchronizing signals and a burst gate pulse signal are respectively separated therefrom. The circuit comprises a horizontal synchronizing output for receiving a horizontal synchronizing signal from a horizontal synchronizing separator and a compensated output of a horizontal synchronizing delay compensation circuit and therefrom supplying the horizontal synchronizing signal having a specified level, a vertical synchronizing output for receiving a vertical synchronizing signal and therefrom supplying the vertical synchronizing signal having a specified level, a composite synchronizing output for supplying a composite synchronizing signal having a specified level by composing the vertical synchronizing signal and the compensated horizontal synchronizing signal, and a burst gate pulse generator for providing a burst gate pulse by inverting and then clamping the horizontal synchronizing signal.

REFERENCES:
patent: 3135826 (1964-06-01), Moles et al.
patent: 4202012 (1980-05-01), Hirashima
patent: 4263610 (1981-04-01), Shanley, II et al.
patent: 4491870 (1985-01-01), Aschwander
patent: 4707730 (1987-11-01), Alard
patent: 4707740 (1987-11-01), Stratton
patent: 4843470 (1989-07-01), Wook et al.

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