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Radio data apparatus

A modem, wireless technology, used in electrical components, telephone communication, transmission systems, etc., to solve the problem of telephone sockets or network sockets nearby

Inactive Publication Date: 2004-07-21
C ONE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Wired devices have limitations in use, such as portability limitations for wired devices, because their operations are based on wired connections
A wired unit also has its limitations when it comes to installation, as a wired unit requires a phone or network outlet nearby

Method used

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  • Radio data apparatus
  • Radio data apparatus
  • Radio data apparatus

Examples

Experimental program
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Embodiment Construction

[0017] In order to better understand the technical content of the present invention, preferred specific embodiments are given as follows.

[0018] figure 1 A wireless modem 10 is shown. The wireless modem 10 includes a near-end unit 11 and a wireless modem card 12 (or 19). The wireless modem card 12 is plugged into a computer 13 . The wireless modem card 12 can be a PCMCIA (Personal Computer Memory Card International Association) for a laptop computer, also known as a PC card, and can be a PCI / mini-card for a desktop computer (PC). PCI (Peripheral Component Connection Interface) card, or other interfaces to other computing devices such as USB.

[0019] The near-end unit 11 is connected to the public telephone network (PSTN) through a two-conductor telephone line 14 plugged into a telephone wall socket 15 . Communication (ie, data exchange) between the local unit 11 and the wireless modem card 12 takes place via a radio frequency (RF) link 16 .

[0020] The RF link 16 tran...

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PUM

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Abstract

The wireless data device includes a near end unit for sending data signal, and a communication card for receiving data signal sent from the near end unit through wireless mode. Moreover, echo elimination is carried out for the data signal. The near end unit communicates with a telephone line, and receives an original signal from the telephone line. Based on the said original signal, the near end unit generates a radio frequency modulation signal. The near end unit includes a transceiver for receiving from and transmitting out data signal. Circuit system in the near end unit receives the original signal from telephone line. A synthesized data signal is generated from original signal and echo signal. Peak voltage offset of the synthesized signal is within linear magnification range of transmitter.

Description

technical field [0001] The invention relates to a wireless data machine. Background technique [0002] Traditionally, computers have been connected to network systems such as the Internet through a "wired" device. As used herein, the term "wired" refers to other wired connections such as telephone lines, Ethernet cables, and similar. [0003] Wired devices have limitations in use, such as portability limitations, since wired devices operate based on wired connections. Wired units also have their limitations when it comes to installation, as they require a phone or network outlet nearby. Contents of the invention [0004] According to a feature of the present invention, the modem of the present invention includes a near-end unit for transmitting data signals without nonlinear distortion, and a communication card for wirelessly receiving the data signals from the near-end unit, and performing Echo cancellation action for this data signal. This feature may also include on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04M11/06
Inventor 林恒诚艾杜佛·曲爵尔
Owner C ONE TECH
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