Television – Two-way video and voice communication – User positioning
Patent
1996-10-22
1999-05-11
Faile, Andrew I.
Television
Two-way video and voice communication
User positioning
348180, 348192, 371 201, H04N7/10;17/00
Patent
active
059033010
ABSTRACT:
An apparatus for removing unnecessary data in communication networks and used in a television transmitting and receiving devices of a cable television system and the like is disclosed. In a television receiving device capable of carrying out data communications, if an unnecessary data such as an address change command is contained in the data stream transmitted from the transmitting device to the receiving device, the unnecessary data is removed in advance. That is, in the present invention, if an unnecessary data is contained in a command, then a CRC error is forcibly generated, so that the receiving device can ignore a data stream containing the unnecessary data, thereby removing unnecessary data. In this manner, the damages to the software or hardware of the receiving device can be prevented.
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patent: 5097469 (1992-03-01), Douglas
patent: 5548598 (1996-08-01), Dupont
patent: 5574495 (1996-11-01), Caporizzo
Faile Andrew I.
Hrozenchik Mark W.
Samsung Electro-Mechanics Co. Ltd.
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