Three dimensional adaptive decoding system and method
US5097321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1989 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Sep 15, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A decoding system (10) receives a composite digital NTSC D2 input signal or a composite analog NTSC RS-170A input signal. The decoding system (10) decodes and sample rate converts to a component digital D1 output and a component analog RGB or Y(R-Y) (B-Y) output. A control panel (20) is connected to the decoding system (10) to provide digital control of the important decoding parameters to provide decoding flexibility. The composite video signal is supplied directly to an adaptive combiner (44), through a line comb filter (48) to the adaptive combiner (44), and through a frame comb filter (52) to the adaptive combiner (44). The composite video signal is also supplied to a frame transition or motion detector (58) and to a line transition or motion detector (60). If no frame transition or motion is detected, the adaptive combiner (44) utilizes frame based three dimensional decoding. When frame transition or motion is detected, the adaptive combiner (44) drops back to two dimensional line combing for the decoding. When line transition or motion is detected, the adaptive combiner drops back to supply the video signal directly to band pass filter (62) for bandpass decoding. Thus, for th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.