OSD device capable of maintaining the size of displayed OSD data

Details OSD device capable of maintaining the size of displayed OSD data OSD device capable of maintaining the size of displayed OSD data

1997-11-17

2000-10-17

Sax, Steven

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345133, H04N 544

Patent

active

061339008

ABSTRACT:
An OSD clock generating circuit includes a PPL circuit controlled to oscillate to generate an OSD clock signal phase-locked with a level transition point of a horizontal synchronous signal. When an OSD device is used in a multisync monitor capable of changing its horizontal synchronous signal frequency, an OSD data can be displayed with the same size without being influenced by a change of the frequency of the horizontal synchronous signal.

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patent: 5459766 (1995-10-01), Huizer et al.
patent: 5579057 (1996-11-01), Banker et al.
patent: 5673087 (1997-09-01), Choi et al.
patent: 5801789 (1998-09-01), Zeidler et al.
patent: 5900913 (1999-05-01), Tults
patent: 5982239 (1999-11-01), Takahashi et al.

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