Motion picture reproducing system by bidirectional communication
US5699472A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Mar 15, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/17318
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A motion picture reproducing system by bidirectional communication, in which characters and graphics are separately encoded to reproduce high quality images. A video server transmits the motion picture codes of the desired video to a terminal in response to a request of the terminal. At that time, by checking a terminal registration information file, it is discriminated whether or not a bit map of the characters and the graphics stored in the user region of the motion picture codes is registered in the terminal. When the bit map is not registered in the terminal, the bit map data are transmitted to the terminal by a bit map encoder. The terminal reads out bit map codes stored in the user region of the motion picture codes and reproduces the bit map date in a bit map decoder. An optimum encoding can be carried out and a code size can be further compressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.