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Difference between revisions of "on-screen display controller"
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Revision as of 15:07, 11 February 2016
An on-screen display controller or on-screen display circuit (OSDC or OSD Controller) or just OSD is a digital circuit that provides the functionality needed to create on-screen displays - i.e. a circuit that allows text and low-level graphics to be superimposed onto a TV screen (on top of normal video signal). OSD circuitry is found as discrete chips, built-into some microcontrollers, and most recently incorporated into the main graphics processor.
Typical features
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Architecture
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OSD Chips
- Mitsubishi M350xx
- Motorola MC1415xx
- Myson Technology MTV
- Philips SAA56xx (TV MCUs + OSD)
- Philips PCA85xx
- Sanyo LC863
- Sanyo LC747
- Samsung 25xx
- SGS-Tompson STV94xx
- NEC μPD64xx
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