Picture out of picture feature for wide-screen display
US5130800A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1989 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Dec 28, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0122
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit for horizontally displaying a first standard aspect-ratio television picture and a reduced-size second standard aspect-ratio television picture on a wide aspect-ratio television display includes a first and a second video signal supply and a circuit for selecting one of the video signals as the first standard aspect-ratio television picture and the other of the video signals as the second standard aspect-ratio television picture. The video signal for the first standard aspect-ratio television picture is then time compressed while the video signal for the second standard aspect-ratio television picture is initially sub-sampled to reduce the size of the resulting television picture and is then time compressed. These two compressed video signals are then selectively applied to the wide aspect-ratio television display so that the reduced-size second standard aspect-ratio television picture appears beside the first standard aspect-ratio television picture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.