Cordless modem system having multiple base and remote stations which are interusable and secure
First Claim
1. A system for transmitting modem data between a modem in a computer and a telephone line, the system comprising:
- a mobile unit connected to the modem, said mobile unit having an identification value and including;
means for receiving modem data from and providing modem data to the modem;
a radio frequency transceiver connected to said mobile unit means for receiving and providing modem data for transmitting and receiving modem data over a radio frequency channel;
means connected to said mobile unit radio frequency transceiver for providing and receiving command information over said radio frequency channel; and
means connected to said mobile unit command information means for performing operations responsive to received command information; and
a base unit connected to the telephone line, said base unit having an identification value and including;
means for receiving modem data from and providing modem data to the telephone line;
a radio frequency transceiver connected to said base unit means for receiving and providing modem data for transmitting and receiving modem data over a radio frequency channel, said base unit radio frequency transceiver operating with said mobile unit radio frequency transceiver;
means connected to said base unit radio frequency transceiver for providing and receiving command information over said radio frequency channel; and
means connected to said base unit command information means for performing operations responsive to received command information,wherein command information provided by said mobile unit command information means and said base unit command information means includes said mobile unit identification value and said base unit identification value and wherein said mobile unit means for performing operations operates only if said received command information includes the identification value of said mobile unit.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
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Citations
21 Claims
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1. A system for transmitting modem data between a modem in a computer and a telephone line, the system comprising:
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a mobile unit connected to the modem, said mobile unit having an identification value and including; means for receiving modem data from and providing modem data to the modem; a radio frequency transceiver connected to said mobile unit means for receiving and providing modem data for transmitting and receiving modem data over a radio frequency channel; means connected to said mobile unit radio frequency transceiver for providing and receiving command information over said radio frequency channel; and means connected to said mobile unit command information means for performing operations responsive to received command information; and a base unit connected to the telephone line, said base unit having an identification value and including; means for receiving modem data from and providing modem data to the telephone line; a radio frequency transceiver connected to said base unit means for receiving and providing modem data for transmitting and receiving modem data over a radio frequency channel, said base unit radio frequency transceiver operating with said mobile unit radio frequency transceiver; means connected to said base unit radio frequency transceiver for providing and receiving command information over said radio frequency channel; and means connected to said base unit command information means for performing operations responsive to received command information, wherein command information provided by said mobile unit command information means and said base unit command information means includes said mobile unit identification value and said base unit identification value and wherein said mobile unit means for performing operations operates only if said received command information includes the identification value of said mobile unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for transmitting modem data between a plurality of computers, each computer including a modem, and a plurality of telephone lines, the system comprising:
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a plurality of mobile units, each connected to the modem in one of the plurality of computers, each said mobile unit having an identification value and including; means for receiving modem data from and providing modem data to the modem; a radio frequency transceiver connected to said mobile unit means for receiving and providing modem data for transmitting and receiving modem data over a radio frequency channel; means connected to said mobile unit radio frequency transceiver for providing and receiving command information over said radio frequency channel; and means connected to said mobile unit command information means for performing operations responsive to received command information; and a plurality of base units, each connected to one of the plurality of telephone lines, each said base unit having an identification value and including; means for receiving modem data from and providing modem data to the telephone line; a radio frequency transceiver connected to said base unit means for receiving and providing modem data for transmitting and receiving modem data over a radio frequency channel, said base unit radio frequency transceiver operating with said mobile unit radio frequency transceiver; means connected to said base unit radio frequency transceiver for providing and receiving command information over said radio frequency channel; and means connected to said base unit command information means for performing operations responsive to received command information, wherein command information provided by said mobile unit command information means and said base unit command information means includes said mobile unit identification value and said base unit identification value, wherein said mobile unit means for performing operations operates only if said received command information includes the identification value of said mobile unit and wherein said plurality of mobile units and said plurality of base units are all within effective radio frequency channel range of each other. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification