Circuit arrangement for the digital identification of a transmis

Details Circuit arrangement for the digital identification of a transmis Circuit arrangement for the digital identification of a transmis

1995-03-08

1997-08-12

Hsia, Sherrie

Television

Basic receiver with additional function

Multimode

348557, 348543, 348638, 348727, H04N 546

Patent

active

056570902

ABSTRACT:
A circuit arrangement for the digital identification of television transmission standards, particularly PAL, SECAM and NTSC. Provision is made for transmission standard demodulation stages connected in parallel to which a signal composed of a chromaticity signal and a synchronizing character is directed and which are each cyclically activated by control signals for a certain period of time. A trigger is also provided, together with an up-down counter, a circuit arrangement for the evaluation of the value delivered by the up-down counter, and a control logic.

REFERENCES:
patent: 4240102 (1980-12-01), Groeneweg
patent: 5267024 (1993-11-01), Murayama
patent: 5339111 (1994-08-01), Park

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