Patent JPS5423322A successfully refreshed from Google Patents.
JPS5423322A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Automatic regulator for brightness of television screen
Assignee: Hitachi Ltd
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Filing: 1977-07-25
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Granted: —
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Expires: 1997-07-25
Abstract
Abstract PURPOSE: To simplify adjustment operations, and to make them efficient by comparing brightness at any point on a screen, extracted from an output signal of an ITV camera, with a fixed level and by adjusting screen brightness by a brightness adjustment volume after amplifying the difference output. COPYRIGHT: (C)1979,JPO&Japio
Inventors
- 👤 Mitsuzo Nakahata
- 👤 Ikuo Kawaguchi
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-05 19:04
CPC Classifications
—
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