Title:
APPARATUS FOR CONTROLLING AMPLITUDE OF VERTICALLY DEFLECTING SIGNALS
Document Type and Number:
WIPO Patent Application WO/1985/005751
Kind Code:
A1
Abstract:
An apparatus for controlling the amplitude of a sawtooth television signal of a vertical cycle. The amplitude of a sawtooth wave is judged in a judgement circuit (7) to determine whether the amplitude is substantially at a level in a suitable range. A counter (9) is provided, which is adapted to count vertical synchronizing signals when the amplitude of the sawtooth signal is outside the intended range. The output of this counter (9) is converted into an analog amplitude control signal by a D/A converter (12) to enable quick-response amplitude control.
Inventors:
KIKUCHI MASAFUMI (JP)
Application Number:
PCT/JP1985/000293
Publication Date:
December 19, 1985
Filing Date:
May 29, 1985
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
G09G1/04; H04N3/26; H03K4/72; H04N3/223; H04N3/27; (IPC1-7): H04N3/27
Foreign References:
| JPS5432016A | 1979-03-09 | |||
| JPS55176671U | 1980-12-18 | |||
| JPS5871266U | 1983-05-14 |
Other References:
See also references of EP 0185096A4
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