发明名称 |
Cordless modem system having multiple base and remote stations which are interusable and secure |
摘要 |
A cordless modem system where a mobile station unit (MSU) is located in the computer and a base station unit (BSU) is connected to the telephone line. A radio frequency (RF) link is developed between the two units to allow a cordless connection. A series of commands are used between the two units to allow the MSU to request a channel, the BSU to grant a channel, the BSU to notify of a ring, and the MSU to request the BSU to go off hook. In addition, there is preferably a command sequence to allow authorization of a particular MSU or BSU. There are two full duplex channels in each MSU and BSU. This allows multiple BSUS and MSUS to be utilized in a small area. Communications between the two units are secure based on address values for each 15 unit contained in the various commands.
|
申请公布号 |
US7142519(B2) |
申请公布日期 |
2006.11.28 |
申请号 |
US20010896428 |
申请日期 |
2001.06.29 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
SAADEH SAID S.;FULTON PAUL R. |
分类号 |
H04B7/00;H04L12/28;H04L12/56;H04M1/725;H04M1/733;H04M11/06 |
主分类号 |
H04B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|