US Patent No: 6,914,965
Number of patents in Portfolio can not be more than 2000
Method and apparatus of providing a single state mobile unit in a modem connection comprising a wireless link
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Jul 5, 2005
Issued date -
Sep 30, 1994
filing date -
08/316,158
serial no -
In Force
status
Importance
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Abstract
An apparatus and method of providing a reliable method of entering command mode and executing modem commands with a modem comprising a wireless communications channel. A wireless communications channel inserted into a standard modem configuration splits the functions of the modem between a mobile unit and a base station. When the system enters command mode, only the base station equipment changes state. The mobile unit continues to operate in the same manner as when the system is in data mode. Any command issued in command mode requiring action from the mobile unit is first sent to the base station. The base station recognizes that the command is intended for the mobile unit and sends a mobile unit-command over an independent private command channel to the mobile unit. The mobile unit constantly monitors the private channel regardless of the state of the system. The mobile unit receives the command on the private command channel, executes the command, and returns any required result code to the terminal equipment.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,431,867 Modem with low part count and improved demodulator | 10 | 1982 | |
| 4,440,988 Modem with low part count and improved demodulator | 12 | 1982 | |
| 4,549,302 Modem with improved escape sequence mechanism to prevent escape in response to random occurrence of escape character in transmitted data | 45 | 1983 | |
| 4,670,887 Multiplexed PSK demodulator | 4 | 1985 | |
| 4,700,358 Synchronous/asynchronous modem | 43 | 1985 | |
| 5,012,489 Method for sending a plurality of data channels over a single communications line | 40 | 1988 | |
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| 4,718,081 Method and apparatus for reducing handoff errors in a cellular radio telephone communications system | 101 | 1986 | |
| 4,723,266 Cellular communication system sharing control channels between cells to reduce number of control channels | 47 | 1987 | |
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| 4,737,978 Networked cellular radiotelephone systems | 141 | 1986 | |
| 4,811,380 Cellular radiotelephone system with dropped call protection | 57 | 1988 | |
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| 5,101,501 Method and system for providing a soft handoff in communications in a CDMA cellular telephone system | 772 | 1989 | |
| 5,109,390 Diversity receiver in a CDMA cellular telephone system | 730 | 1989 | |
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| 5,483,531 Digital mobile radio network station with speech signal exchange means and data signal exchange means | 31 | 1994 | |
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| 4,596,042 Radio transmission method for a mobile radio system | 21 | 1983 | |
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| 4,504,802 Digital PSK modulator for modem | 12 | 1983 | |
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| 4,759,051 Communications system | 94 | 1987 | |
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| 5,479,480 Dual mode cellular modem | 114 | 1993 | |
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| 4,211,894 Transmitter multiplexing system for a land mobile communication system | 30 | 1978 | |
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| 5,109,528 Handover method for mobile radio system | 165 | 1989 | |
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| 4,955,082 Mobile communication system | 82 | 1989 | |
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| 4,765,753 Method and apparatus for handing-over a radio connection from one radio cell to another radio cell of a digital radio transmission system | 270 | 1987 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 5, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 5, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |