发明名称 |
SYSTEM AND METHOD FOR PROVIDING COMPRESSED DIGITAL TELETEXT SERVICES AND TELETEXT SUPPORT SERVICES |
摘要 |
<p>A teletext system provides teletext services and teletext support services in a multiservice communication system. Multiplexed data streams for a plurality of services, including teletext data, are transmitted in a sequence of frames between a transmitter location and a receiver location. Teletext information is transmitted in the format of a header packet and a data packet. The header packet contains information identifying the teletext information according to page number as well as other filter fields, such as language, time zone, etc. By appropriate selection of the values of the filter fields, the operator is afforded greater flexibility in providing a variety of classes of service and service support to subscribers. In addition, the system may be easily be reconfigured to support the addition of services or the cancellation of services.</p> |
申请公布号 |
EP0732026(B1) |
申请公布日期 |
2001.09.05 |
申请号 |
EP19950904794 |
申请日期 |
1994.12.02 |
申请人 |
SCIENTIFIC-ATLANTA, INC. |
发明人 |
WOO, ARTHUR, S.;SHELDRICK, WAYNE, S.;GAMMIE, KEITH, B.;HEKIMIAN, HRAD |
分类号 |
H04N7/025;H04N7/088;H04N7/167;H04N21/236;H04N21/2365;H04N21/434;(IPC1-7):H04N7/025;H04N7/16 |
主分类号 |
H04N7/025 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|