Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2007-07-17
2007-07-17
Urban, Edward F. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S242200, C455S251100, C375S345000
Reexamination Certificate
active
10819288
ABSTRACT:
A radio receiver comprises a first amplifier to amplify a received radio signal; a quadrature demodulator to demodulate the radio signal amplified by said first amplifier and thereby generate a baseband signal; a second amplifier to amplify the baseband signal; a demodulator to demodulate the baseband signal amplified by said second amplifier; and a gain controller to control timing of a change in a gain of said second amplifier, in case that changing the gain of said first amplifier and the gain of said second amplifier, on the basis of a gain of said first amplifier before and after the change.
REFERENCES:
patent: 6205189 (2001-03-01), Ha
patent: 6459889 (2002-10-01), Ruelke
patent: 6748200 (2004-06-01), Webster et al.
patent: 6885852 (2005-04-01), Hughes et al.
patent: 6950641 (2005-09-01), Gu
patent: 6963733 (2005-11-01), Eriksson et al.
patent: 7076225 (2006-07-01), Li et al.
patent: 2003/0064696 (2003-04-01), Akamine et al.
patent: 2003/0207675 (2003-11-01), Hughes et al.
patent: 2004/0097209 (2004-05-01), Haub et al.
patent: 2005/0070240 (2005-03-01), Adler et al.
patent: 2005/0186928 (2005-08-01), Miura
patent: 2005/0208919 (2005-09-01), Walker et al.
patent: 2002-76805 (2002-03-01), None
patent: 2002-94346 (2002-03-01), None
patent: WO 01/47105 (2001-06-01), None
patent: WO 02/067420 (2002-08-01), None
H. Tanimoto, IEICE Trans. Electron., vol. J64-C, No. 5, pp. 337-348, “Mission Impossible? A Review of Mixers for Direct-Conversion Receivers”, May 2001.
U.S. Appl. No. 10/327,104, filed Dec. 24, 2002, Toyoda et al.
U.S. Appl. No. 10/819,288, filed Apr. 7, 2004, Sekiguchi et al.
U.S. Appl. No. 11/280,331, filed Nov. 17, 2005, Toyoda et al.
U.S. Appl. No. 11/280,315, filed Nov. 17, 2005, Toyoda et al.
Sekiguchi Takahiro
Seto Ichiro
Toyoda Takehiko
Yoshida Hiroshi
Jackson Blane J.
Kabushiki Kaisha Toshiba
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Urban Edward F.
LandOfFree
Radio receiver and radio signal processing method with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radio receiver and radio signal processing method with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio receiver and radio signal processing method with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3763311