US Patent No: 5,175,875

Number of patents in Portfolio can not be more than 2000

Radio communication apparatus with programmable signal modulation

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Importance

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Abstract

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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

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SONY CORPORATIONTOKYO, JP27337

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Takayuki Shizuoka, JP 159 659
Someno, Noboru Saitama, JP 6 134
Takao, Nobutaka Kanagawa, JP 6 106
Yokoya, Satoshi Kanagawa, JP 26 267

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
* 4,521,912 Low power indicating circuit for a radio transmitter 21 1983
 
KABUSHIKI KAISHA TOSHIBA (1)
* 5,033,111 Radio telecommunication apparatus 14 1989
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 5,033,109 Pocket transceiver 70 1989
 
MOTOROLA, INC. (1)
* 4,992,753 Power amplifier for a radio frequency signal 39 1989
 
NEC CORPORATION (1)
* 4,709,404 Battery-powered radio communication apparatus capable of prolonging the communicable state thereof 22 1985
 
RICOH COMPANY, LTD. (1)
* 4,956,876 DC decoupled radio communication system 14 1988
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
INTELLECT WIRELESS INC. (12)
6,278,862 Method and apparatus for enhancing the efficient communication of information in an alphanumeric paging network 104 1994
7,426,264 Method and apparatus for improved personal communication devices and systems 83 1996
7,251,318 Method and apparatus for improved personal communication devices and systems 24 2001
7,266,186 Method and apparatus for improved paging receiver and system 123 2001
7,349,532 Picture and video message center system 12 2003
7,305,076 Method and apparatus for improved paging receiver and system 6 2003
7,310,416 Method and apparatus for improved personal communication devices and systems 13 2005
7,286,658 Method and apparatus for improved personal communication devices and systems 16 2005
7,257,210 Picture phone with caller id 29 2005
7,454,000 Method and apparatus for improved personal communication devices and systems 16 2005
7,308,088 Method and apparatus for improved personal communication devices and systems 6 2005
7,254,223 Method and apparatus for improved personal communication devices and systems 8 2005
 
AT&T WIRELESS SERVICES, INC. (6)
* 5,675,590 Cyclic trellis coded modulation 31 1994
* 5,659,578 High rate Reed-Solomon concatenated trellis coded 16 star QAM system for transmission of data over cellular mobile radio 44 1994
* 5,784,417 Cyclic trelles coded modulation 10 1995
* 5,838,728 High rate reed-solomon concatenated trellis coded 16 star QAM system for transmission of data over cellular mobile radio 57 1997
* 5,931,965 Cyclic trellis coded modulation 16 1997
6,578,173 Cyclic trellis-coded modulation 6 2002
 
AT&T MOBILITY II LLC (2)
6,889,356 Cyclic trellis coded modulation 5 2003
8,037,396 Cyclic trellis coded modulation 2 2005
 
SONY CORPORATION (2)
* 5,414,751 Portable telephone apparatus responsive to control signals obtained through a connector and through a wired telephone line for a mending the operational program 52 1992
* 5,826,177 Radio transmitter 15 1996
 
DDBH INVESTMENTS, LP (1)
6,427,064 Method and apparatus for maintaining a database in a portable communication device 70 1994
 
ITT MANUFACTURING ENTERPRISES, INC. (1)
* 5,930,688 Method and apparatus for intermodulation noise suppression in RF power amplifiers 6 1992
 
KYOCERA CORPORATION (1)
* 6,522,892 Method of controlling transmission output of radio via closed loop and open loop operation 3 1998
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 5,495,518 Car telephone apparatus having operational control program replacing function 11 1994
 
NEC CORPORATION (1)
* 6,178,309 Electronic device having an AGC loop 1 1997
 
NOKIA MOBILE PHONES LTD. (1)
D412168 Handset 39 1997
 
NXP B.V. (1)
* 6,073,009 Radio signal controller radio communication device, radio communication system and methods of controlling a radio 4 1997
 
WARREN & LEWIS INVESTMENT CORPORATION (1)
* 6,327,483 Mobile radio communication equipment 3 1999
* Cited By Examiner