A fully digital convergence system for projection TV

A fully digital convergence system for projection TV

A high-precision fully digital convergence system for home-use PTVs (projection televisions) has been developed. The use of digital circuits and the curved-line interpolation technique can reduce the misconvergence to less than 2 mm (it is 4-6 mm in the conventional system). The use of time-division...

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Veröffentlicht in:IEEE transactions on consumer electronics 1990-08, Vol.36 (3), p.445-453
Hauptverfasser: Shiomi, M., Ohsawa, M., Ando, K., Sakamoto, T., Yuki, I., Ozeki, K., Matsumi, K.
Format: Artikel
Sprache:eng
Schlagworte:
Brightness
Consumer electronics
Consumer products
Convergence
Costs
Interpolation
Large-scale systems
Resistors
Video equipment
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Zusammenfassung:A high-precision fully digital convergence system for home-use PTVs (projection televisions) has been developed. The use of digital circuits and the curved-line interpolation technique can reduce the misconvergence to less than 2 mm (it is 4-6 mm in the conventional system). The use of time-division processing in the digital-to-analog converter and the newly developed gate array realizes a low-cost system and reduces the number of variable resistors to 6 (there are 30-45 in a conventional system). The system can handle nonstandard signals reproduced from VCRs, and can also be applied to EDTV, HDTV, and so on.< >
ISSN:0098-3063
1558-4127
DOI:10.1109/30.103158