U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

System and method for reducing noise in a recording receiver

Patent 7437136 Issued on October 14, 2008. Estimated Expiration Date: Icon_subject August 29, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Power efficient receiver
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Method and system for information dissemination using television signals
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Issued on: 12/11/2001
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Digital radio prepaid music recording system
Patent #: 6563805
Issued on: 05/13/2003
Inventor: Ma, et al.

Image reject mixer circuit arrangements
Patent #: 6597899
Issued on: 07/22/2003
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Power-saving mode for portable communication devices
Patent #: 6735456
Issued on: 05/11/2004
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Mobil communication apparatus and information providing system using the mobile communication apparatus Patent #: 6871048
Issued on: 03/22/2005
Inventor: Takagaki

Inventor

Assignee

Application

No. 11215688 filed on 08/29/2005

US Classes:

455/296, Noise or interference elimination455/574, Power conservation455/343.4Based on schedule information

Examiners

Primary: Jackson, Blane J.

Attorney, Agent or Firm

Foreign Patent References

  • 0 463 621 EP 01/01/1992
  • WO 01/39406 WO 05/01/2001

International Class

H04B 1/16

Abstract

An apparatus and method is related to wireless communication devices with a reduced-noise recording receiver. The recording receiver receives a transmitted signal, converts the received signal to a digital base-band signal and stores the digitized base-band signal in a buffer for subsequent processing. The stored digital signals are subsequently processed to recover the transmitted data signal. The overall signal integrity in the receiver is improved by performing signal processing after reception is complete. The IF processing section of the receiver includes a frequency band translation section. The frequency band translation section translates the frequency band of the IF signal into a non-harmonically related frequency band. Since the IF signal is in an unrelated frequency band, data can be recovered from the transmission signal with improved signal-to-noise characteristics. At least a portion of the non-essential electronics are disabled during reception to avoid additional interference and sources of noise.

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