Television – Receiver circuitry – Tuning
Patent
1995-12-29
1999-09-28
Hsia, Sherrie
Television
Receiver circuitry
Tuning
348735, 348468, H04N 550
Patent
active
059597003
ABSTRACT:
An automatic tuning apparatus capable of automatically switching the tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by the user comprises a SYNC discrimination circuit (11) discriminating whether a video signal system is the NTSC system or another system, a tuning mode switching circuit (12) for switching the tuning mode, and a color discrimination circuit (13) receiving a color bust signal (identic signal) for discriminating whether the video signal system is the PAL system or the SECAM system. As to the NTSC system, the PAL system, the SECAM system and the SECAM-L system, the user may not set the tuning mode of tuning circuit, whereby an automatic tuning apparatus imposing no burden on the user can be obtained.
REFERENCES:
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patent: 4897727 (1990-01-01), Richards
patent: 5371550 (1994-12-01), Shibutani et al.
patent: 5428400 (1995-06-01), Landis et al.
patent: 5428405 (1995-06-01), Lee
patent: 5557422 (1996-09-01), Nishigaki et al.
patent: 5564088 (1996-10-01), Saitoh
patent: 5631707 (1997-05-01), D'Errico
Arikane Noboru
Hamada Jun-ichi
Hongoh Kimitoshi
Okugawa Isamu
Shimamoto Katsushi
Hsia Sherrie
Mitsubishi Denki & Kabushiki Kaisha
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