Linearity compensation circuit for wide-screen television receiv

Details Linearity compensation circuit for wide-screen television receiv Linearity compensation circuit for wide-screen television receiv

1996-01-11

1998-07-07

Burgess, Glenton B.

Television

Video display

Cathode-ray tube

348556, 315400, 315370, H04N 332, H04N 337

Patent

active

057776970

ABSTRACT:
A linearity compensation circuit for a wide-screen television receiver which can uniformly compensate for a picture linearity that may be distorted due to variation of deflection current when a display mode is changed from a 4.times.3 aspect ratio (AR) to 16.times.9 AR, and vice versa. The linearity compensation circuit includes a variable linearity compensation coil which is connected to a horizontal deflection coil, and a control section for varying the inductance value of the variable linearity compensation coil according to change of the 4.times.3 AR and 16.times.9 AR display modes so as to compensate for the linearity of the picture displayed on a display screen.

REFERENCES:
patent: 4795946 (1989-01-01), Nishiyama
patent: 5329211 (1994-07-01), Sasaki et al.
patent: 5461431 (1995-10-01), Takebuchi et al.
patent: 5473224 (1995-12-01), Tsujihara et al.
patent: 5519447 (1996-05-01), Shima et al.

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