Video signal processing apparatus, image display control method, storage medium, and program
US7705902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2003 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Apr 13, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/9264
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal processing apparatus includes two image display memory areas 22 and 24 which alternately repeat input and output operations by receiving a signal obtained by performing predetermined processing for an output image signal from an image sensor 12, an image display unit 28 for displaying an object image represented by image frames sequentially output from the two memory areas, a system controller 40 which, when an image frame is to be input to one of the two memory areas, causes the other one of the two memory areas to output a held image frame, and causes the two memory areas to alternately repeat the input and output operations, thereby switching inputting and outputting of the two memory areas, and a mode determination circuit 272 for determining whether the frame rate of the output image signal from the image sensor 12 is higher or lower than the image display rate of the image display unit 28. On the basis of the determination result, the system controller 40 changes input/output control for the two memory areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.