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Communication system

A technology of telecommunication and acoustic signal, applied in the field of communication system

Inactive Publication Date: 2010-09-01
INTRASONICS S A R L
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The downside of using an infrared link is that the cell phone has to be aligned fairly precisely with the other infrared port

Method used

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no. 1 example

[0050] figure 1 A first embodiment of the invention is schematically illustrated in which a data signal F(t) generated by a data source 1 is encoded by an encoder 5 into a channel from an audio signal source 3 to form a television The modified soundtrack of the program. In the illustrated embodiment, the data signal F(t) conveys a Uniform Resource Locator (URL) identifying a Web page, accessible via the Internet, associated with the television program. The modified audio channels output by the encoder 5 are then combined with the corresponding video channels from the video signal source 7 via a signal generator 9 to form the television signal carrying the television programme. In the described embodiment, the data source 1, audio source 3, video signal source 7 and encoder 5 are all arranged in a television studio and the television signals are broadcast over a broadcast network 11 of commonly used radio frequency (RF) signals 13. out.

[0051] The RF signal 13 is received ...

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Abstract

There is described a communication system in which data is received by and / or transmitted to a telecomunications apparatus using an acoustic data channel. In embodiments, the data is encoded within the audio track of a media broadcast or other public broadcast. The invention has particular, but not exclusive, relevance to a cellular communication system. There are also described acoustic position detection systems for determining the position of a telecomunications apparatus.

Description

[0001] This application is a divisional application of the application whose international filing date is November 30, 2001, the application number is 01822356.7, and the title of the invention is "communication system". technical field [0002] The present invention relates to communication systems. The invention is particularly (but not exclusively) relevant to communication systems in which a telephone device, such as a cellular telephone, is equipped with a second data channel. Background technique [0003] In existing cellular telephones, the second data channel is formed by sending data via an infrared link, for example according to the IrDA protocol. The disadvantage of using an infrared link is that the cell phone must be aligned fairly precisely with the other infrared port. Contents of the invention [0004] According to an aspect of the present invention, a communication system is provided in which data is received by and / or transmitted to a telecommunication d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/725G10L19/00H04H60/52H04H60/80H04L29/06A63H3/36G01S5/30G10L19/018G10L19/14H04B7/26H04H20/31H04M1/253H04M1/57H04M1/7243H04M1/72445H04M11/00H04N5/60H04N7/08H04N7/088
CPCH04N21/44222H04N7/08H04M1/72547H04H60/52H04M1/578H04N21/25891H04N5/607A63H2200/00H04N21/4758H04M1/253H04N21/41407H04N21/25841A63H3/365H04N21/42684H04H20/31G01S5/30H04M1/2155H04M1/274516G10L19/018H04N21/6582H04H60/80H04N7/088H04M1/72561H04H20/93H04M1/2757H04M1/7243H04M1/72445H04N21/44224
Inventor A·W·琼斯M·R·雷诺D·巴特莱特I·M·霍斯金D·G·古伊P·J·凯利D·R·E·蒂姆森N·瓦斯洛波罗斯A·M·哈特R·J·莫兰
Owner INTRASONICS S A R L
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