Vir-signal processing circuitry for video tape recorder

Details Vir-signal processing circuitry for video tape recorder Vir-signal processing circuitry for video tape recorder

Category

H - Electricity

Subcategory

04

Subsubcategory

N

CPC

352/18, 350/38,

IPC codes

H04N 5/92 (2006.01) H04N 9/82 (2006.01) H04N 9/87 (2006.01)

Type

Patent

Patent number

CA 1125908

Description

ABSTRACT OF THE DISCLOSURE A VIR-signal processing circuitry for a VTR (video tape recorder) having a comb filter for obtaining a correct operation of the VIR circuit incorporated in a television receivers, comprises a comb filter stopping means for prevent- ing the VITS (vertical interval test signal) on the 18th line from polluting the VIRS (vertical interval reference signal), a phase transfer means for transferring the phase information of the transmitted VIRS to the reference subcarrier after elimination of the crosstalks by integrating the VIRS, an am- plitude transfer means for transferring the amplitude informa- tion of the transmitted VIRS to the output signal of said phase transfer means after elimination of the crosstalks by integrat- ing the VIRS, and a VIRS replacing means for replacing the transmitted VIRS by the newly developed chrominance reference using the output signal of said amplitude transfer means.

Application Number

313061

Affiliated with

Also associated with

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