US Patent No: 5,175,875
Number of patents in Portfolio can not be more than 2000
Radio communication apparatus with programmable signal modulation
Stats
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Dec 29, 1992
Issued date -
Apr 2, 1990
filing date -
07/502,680
serial no -
Expired
status
Importance
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Abstract
A radio communication apparatus comprising a modulating portion for modulating a carrier with a signal to transmit so as to produce a transmissible signal; a signal transmitting portion for transmitting the transmissible signal; a level adjusting portion for adjusting a level of the signal to transmit or a level of a control signal used for controlling the transmissible signal in accordance with digital control data supplied to the level adjusting portions; a memory for storing digital adjusting data; and a control unit for reading the digital adjusting data from the memory and supplying the level adjusting portion with the digital adjusting data read from the memory or modified digital adjusting data obtained based on the digital adjusting data read from the memory as the digital control data.
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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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| 4,521,912 Low power indicating circuit for a radio transmitter | 21 | 1983 | |
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| 5,033,111 Radio telecommunication apparatus | 14 | 1989 | |
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| 5,033,109 Pocket transceiver | 61 | 1989 | |
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| 4,992,753 Power amplifier for a radio frequency signal | 39 | 1989 | |
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| 4,709,404 Battery-powered radio communication apparatus capable of prolonging the communicable state thereof | 22 | 1985 | |
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| 4,956,876 DC decoupled radio communication system | 14 | 1988 | |