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Method and apparatus for transmitting and downloading setup information

A technology for determining devices and signals, which is applied in the field of channel mapping and can solve problems such as occupation and large transmission bandwidth.

Inactive Publication Date: 2008-12-03
ROVI GUIDES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires each cable, satellite or broadcast service to send its own channel map, which takes up considerable transmission bandwidth

Method used

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  • Method and apparatus for transmitting and downloading setup information
  • Method and apparatus for transmitting and downloading setup information
  • Method and apparatus for transmitting and downloading setup information

Examples

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Embodiment Construction

[0033] In a preferred embodiment of the invention, channel map information is delivered on one or more designated television stations, referred to as "physical hosts." The channel map information transmitted by each physical host includes the channel map that carries most or all of the television services for that physical host. A channel map is accompanied by a channel map identifier that uniquely identifies the channel map applicable to each television service. Since viewers in the same geographic area typically receive the same OTA broadcast or subscribe to the same cable TV service, the channel map identifier is preferably a postal directory code ("zip code"). Additionally, if several different zip codes share the same channel map, bandwidth performance can be further improved by creating groups of zip codes and sending a single common channel map to the combined area. Channel map identifiers, on the other hand, may be unique codes assigned to various cable, satellite, an...

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Abstract

Multiple channel maps are embedded in a television transmission and the appropriate channel corresponding to the particular television service used by the viewer is downloaded for use with the television receiver. Each channel map is accompanied by a channel map identifier which identifies the source of the television transmission and a geographic identifier. The source of a television transmission is automatically detected by monitoring the radio-frequency spectrum allocations of telecast stations. The geographic area identifier is determined by comparison with a user inputted geographic area identifier. The channel map having a channel map identifier corresponding to the detected television transmission source and the user inputted geographic area identifier is downloaded and stored for future use.

Description

technical field [0001] This invention relates to the transmission and reception of data embedded in television signals, and more particularly to an automatic method and apparatus for transmitting multiple channel maps in a television signal and for downloading the channel map corresponding to the particular television service used by the viewer. Background technique [0002] In the field of television broadcasting, radio frequency ("RF") spectrum allocations are used to define the manner in which television transmissions will occupy the RF spectrum. For example, in the United States, television transmissions are divided into two frequency ranges known as the Very High Frequency (VHF) and Ultra High Frequency (UHF) regions. The VHF region is approximately in the frequency range of 40MHz to 200MHz, while the UFH region extends from 470MHz to approximately 1.0GHz. Exact channel and bandwidth allocation includes 68 channels, each occupying 6MHz. Each television broadcast stati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/38H04N7/167H04N7/173G04G5/00H04N5/50H04N7/088H04N7/16
CPCH04N5/50H04N21/4622H04N21/435H04N21/4383H04N5/44543H04N21/84H04N7/1675G04G5/002H04N7/0884H04N21/482G04R20/14H04N21/4316H04N21/485H04N21/47H04N7/0887H04N7/088H04N7/165H04N5/45H04N21/42204H04N21/4524H04N21/4345
Inventor 汉里·C.·袁丹尼尔·S.·郭阿兰·张
Owner ROVI GUIDES INC