Modem having speed notifying means

Details Modem having speed notifying means Modem having speed notifying means

Category

H - Electricity

Subcategory

04

Subsubcategory

B

CPC

325/15

IPC codes

H04B 1/40 (2006.01) H04L 5/14 (2006.01)

Type

Patent

Patent number

CA 2035213

Description

A modem is connected to a terminal equipment and couples to another modem via a transmission line. The modem includes a data transmission and reception part for making data transmission and reception with the terminal equipment, and a modem part for determining a modulation technique, for modulating a transmission signal from the other modem. In addition, the modem includes a data compression and decompression part for determining a compression technique. The compression technique is used for compressing serial data from the data transmission and reception part before supplying the same to the modem part and for decompressing the compressed serial data from the modem part before supplying the same to the data transmission and reception part. The modem further includes a speed determining part, notified of a communication speed between the modem and the other modem determined from the modulation technique and a compression rate of the data compression technique for determining an optimum communication speed when the connection between the two modems is established. In addition, the modulation technique is determined and the data compression technique is determined, in response to outputs of the modem part and data compression and decompression part. The speed determining part notifies the data transmission and reception part of the optimum communication speed, and the data transmission and reception part makes data transmission and reception with the terminal equipment using the optimum communication speed.

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