Digital wireless speaker system

Details Digital wireless speaker system Digital wireless speaker system

1998-04-24

1999-08-31

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375202, 375206, 375209, H04B 1500

Patent

active

059463430

ABSTRACT:
This invention discloses a digital wireless speaker system for use in consumer audio applications. A digital radio frequency transmitter is connected to an analog or digital audio source and a digital radio frequency receiver provides for reception of the transmitted audio information in remote locations. In addition, the digital receiver will be able to receive control information to implement such things as volume, tone controls, or other auxiliary information. This allows the user to listen to high quality audio in a variety of locations without the need of independent stereos or external wires. The system is based on digital circuitry to improve the performance of the system and provide for compact disc quality sound. The digital circuitry incorporates forward error correction techniques and interleaving to enable the system to account for errors in transmission and thus improve the overall performance of the system.

REFERENCES:
patent: 4193030 (1980-03-01), Rabow et al.
patent: 4621374 (1986-11-01), Micic et al.
patent: 4802171 (1989-01-01), Rasky
patent: 4829570 (1989-05-01), Schotz
patent: 4941150 (1990-07-01), Iwasaki
patent: 5157686 (1992-10-01), Omura et al.
patent: 5166953 (1992-11-01), Hershey et al.
patent: 5182552 (1993-01-01), Paynting
patent: 5299264 (1994-03-01), Schotz et al.
patent: 5375174 (1994-12-01), Denenberg
patent: 5392300 (1995-02-01), Borth et al.
patent: 5398002 (1995-03-01), Bang
patent: 5406634 (1995-04-01), Anderson et al.
patent: 5420640 (1995-05-01), Munich
patent: 5491839 (1996-02-01), Schotz
patent: 5581617 (1996-12-01), Schotz et al.
patent: 5619524 (1997-04-01), Ling et al.
Gravina E-Z Comm Wave--Voltage Controlled Oscillators from 20 MHz to 310.
Space Technology Hyper-Fec III CMOS Hard Decision Forward Error Correction Encoder/Decoder--241203.
AT & T Jul. 1991 TRU050 Clock Recovery and Data Retiming Module.
Phillips Aug. 1993 Stereo Filter and Codec for MPEP layer audio applications--SAAA2520.
Motorola DSP56000--24-Bit Digital Signal Processors.
Crystal Semiconductor Corporation Nov. 1993 Digital Audio Interface Receiver--CSS8411, CSS8412.
ATMEL AT48802--Spread Spectrum Signal Processor Integrated Circuit.
Hewlett-Packard Silicon Bipolar MMIC 5 GHz Active Double Balanced Mixer/IF Amp-Technical Data--IAM-82008.
Hewlett-Packard 1.5--8 GHz Low Noise GaAs MMIC Amplifier--Technical Data--MGA-86576.
Penstock/Sawtek IF/RF Microwave Distribution Penstock/Sawtek Info/Card 59-70 MHz SAW Filters.
Microchip Technology, Inc. 1994 ROM-Based 8-Bit CMOS Micro-Controller--PIC16CR57A.
Teledyne Electronic Technologies TAE-1020 2.4GHz GaAs MMIC ISM Band Power Amplifier.
Phillips 1993 Masking threshold processor for MPEG layer 1 audio compression applications SAA2521.
RF Micro-Devices Low Noise Amplifier/Mixer RF2401.
RF Micro-Devices 2.5 GHz Direct Quadrature Modulator RF2422.
GEC Plessey Semi-Conductors 50M-Bit Manchester BiPhase-Mark Encoder and Led Driver--SP9960 & 50M-Bit Manchester BiPhase Decoder--SP9921.
Piezoelectric Devices M2 Series (D300) Voltage Controlled Oscillators for Digital Audio.
Fujitsu Apr. 1991 Edition 2.0 MB1508 Serial Input PLL Frequency Synthesizer.
Phillips Jul. 1993 Bitstream conversion ADC for Digital audio systems--SAA7360.
Motorola 1993 Serial Input PLL Frequency Synthesizer--MC12210.
Space Research Technology SRT-24INT Interleaver/Deinterleaver Controller Chip (Preliminary data sheet).
Z-Communications 1994 SMV2500--Voltage Controlled Oscillator.
Phillips May 1993 Stereo 1 FS data input upsampling Filter with bitstream continuous calibration DAC--TDAA1305T.
RF Micro-Devices 2.5 GHz Medium Power Linear Amplifier--RF2127.
RF Micro-Devices Preliminary Quadrature Modulator/Demodulator--RF2703.
Spread Spectrum for Commercial Communications Apr. 1991 IEEE Communications Magazine.
PCT/US/96/01648 Mar. 27, 1997 PCT International Search Report.
PCT/US96/04131 Mar. 26, 1996 International Search Report.
06077100 Oct. 31, 1995 Patent Abstracts of Japan.
Principles of Digital Audio, XP002017123 Chapter 8 "Error Correction" 1989 Ken Pohlman pp. 210-228.
Federal Communications Commission 47 CFR Oct. 1995 .sctn..sctn.15.247 and 15.249.

Affiliated with

Also associated with

Rating

Digital wireless speaker system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital wireless speaker system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital wireless speaker system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2428123