IL98992A - Spread spectrum encoding apparatus - Google Patents

Spread spectrum encoding apparatus

Info

Publication number
IL98992A
IL98992A IL9899291A IL9899291A IL98992A IL 98992 A IL98992 A IL 98992A IL 9899291 A IL9899291 A IL 9899291A IL 9899291 A IL9899291 A IL 9899291A IL 98992 A IL98992 A IL 98992A
Authority
IL
Israel
Prior art keywords
spread spectrum
sequence
channel
signal
array
Prior art date
Application number
IL9899291A
Other languages
English (en)
Other versions
IL98992A0 (en
Original Assignee
Aware Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aware Inc filed Critical Aware Inc
Publication of IL98992A0 publication Critical patent/IL98992A0/xx
Publication of IL98992A publication Critical patent/IL98992A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0004—Modulated-carrier systems using wavelets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J2013/0037—Multilevel codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Radio Relay Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
IL9899291A 1990-08-06 1991-07-29 Spread spectrum encoding apparatus IL98992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/563,275 US5081645A (en) 1990-08-06 1990-08-06 Novel spread spectrum codec apparatus and method

Publications (2)

Publication Number Publication Date
IL98992A0 IL98992A0 (en) 1992-07-15
IL98992A true IL98992A (en) 1994-08-26

Family

ID=24249841

Family Applications (1)

Application Number Title Priority Date Filing Date
IL9899291A IL98992A (en) 1990-08-06 1991-07-29 Spread spectrum encoding apparatus

Country Status (7)

Country Link
US (1) US5081645A (ja)
EP (1) EP0542894A4 (ja)
JP (1) JPH05509449A (ja)
KR (1) KR930701882A (ja)
AU (1) AU647343B2 (ja)
IL (1) IL98992A (ja)
WO (1) WO1992003002A1 (ja)

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US5838389A (en) * 1992-11-02 1998-11-17 The 3Do Company Apparatus and method for updating a CLUT during horizontal blanking
US5596693A (en) * 1992-11-02 1997-01-21 The 3Do Company Method for controlling a spryte rendering processor
US5752073A (en) * 1993-01-06 1998-05-12 Cagent Technologies, Inc. Digital signal processor architecture
US5546477A (en) * 1993-03-30 1996-08-13 Klics, Inc. Data compression and decompression
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CN1065092C (zh) * 1994-02-09 2001-04-25 Ntt移动通信网株式会社 码分多址移动通信的方法和系统
US5559828A (en) * 1994-05-16 1996-09-24 Armstrong; John T. Transmitted reference spread spectrum communication using a single carrier with two mutually orthogonal modulated basis vectors
US5748786A (en) * 1994-09-21 1998-05-05 Ricoh Company, Ltd. Apparatus for compression using reversible embedded wavelets
JP3302229B2 (ja) 1994-09-20 2002-07-15 株式会社リコー 符号化方法、符号化／復号方法及び復号方法
US6229927B1 (en) 1994-09-21 2001-05-08 Ricoh Company, Ltd. Reversible embedded wavelet system implementation
US5881176A (en) 1994-09-21 1999-03-09 Ricoh Corporation Compression and decompression with wavelet style and binary style including quantization by device-dependent parser
US5966465A (en) * 1994-09-21 1999-10-12 Ricoh Corporation Compression/decompression using reversible embedded wavelets
US6549666B1 (en) * 1994-09-21 2003-04-15 Ricoh Company, Ltd Reversible embedded wavelet system implementation
US6873734B1 (en) * 1994-09-21 2005-03-29 Ricoh Company Ltd Method and apparatus for compression using reversible wavelet transforms and an embedded codestream
US6195465B1 (en) 1994-09-21 2001-02-27 Ricoh Company, Ltd. Method and apparatus for compression using reversible wavelet transforms and an embedded codestream
US5724340A (en) * 1995-02-02 1998-03-03 Unisys Corporation Apparatus and method for amplitude tracking
US5841808A (en) * 1995-03-23 1998-11-24 Mcdonnell Douglas Corporation Spread spectrum chip rate tracking system
EP0801852A1 (en) * 1995-10-24 1997-10-22 Koninklijke Philips Electronics N.V. Repeated decoding and encoding in subband encoder/decoders
US5825807A (en) * 1995-11-06 1998-10-20 Kumar; Derek D. System and method for multiplexing a spread spectrum communication system
US5966401A (en) * 1995-12-27 1999-10-12 Kumar; Derek D. RF simplex spread spectrum receiver and method with symbol deinterleaving prior to bit estimating
US6108368A (en) * 1995-12-29 2000-08-22 Echelon Corporation Adaptive reference pattern for spread spectrum detection claims
US5748671A (en) * 1995-12-29 1998-05-05 Echelon Corporation Adaptive reference pattern for spread spectrum detection
US5748677A (en) * 1996-01-16 1998-05-05 Kumar; Derek D. Reference signal communication method and system
US5999656A (en) * 1997-01-17 1999-12-07 Ricoh Co., Ltd. Overlapped reversible transforms for unified lossless/lossy compression
US6044172A (en) * 1997-12-22 2000-03-28 Ricoh Company Ltd. Method and apparatus for reversible color conversion
US6128330A (en) 1998-11-24 2000-10-03 Linex Technology, Inc. Efficient shadow reduction antenna system for spread spectrum
US6421464B1 (en) * 1998-12-16 2002-07-16 Fastvdo Llc Fast lapped image transforms using lifting steps
AU2214200A (en) * 1998-12-30 2000-07-24 Futurewave, Inc. Constant envelope modulation communication system
US6314452B1 (en) 1999-08-31 2001-11-06 Rtimage, Ltd. System and method for transmitting a digital image over a communication network
US6606357B1 (en) 1999-09-10 2003-08-12 Harris Corporation Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size
US7024046B2 (en) * 2000-04-18 2006-04-04 Real Time Image Ltd. System and method for the lossless progressive streaming of images over a communication network
US6741636B1 (en) * 2000-06-27 2004-05-25 Lockheed Martin Corporation System and method for converting data into a noise-like waveform
US7173899B1 (en) * 2000-08-28 2007-02-06 Lucent Technologies Inc. Training and synchronization sequences for wireless systems with multiple transmit and receive antennas used in CDMA or TDMA systems
US7376279B2 (en) * 2000-12-14 2008-05-20 Idx Investment Corporation Three-dimensional image streaming system and method for medical images
US6898323B2 (en) 2001-02-15 2005-05-24 Ricoh Company, Ltd. Memory usage scheme for performing wavelet processing
US6859563B2 (en) 2001-03-30 2005-02-22 Ricoh Co., Ltd. Method and apparatus for decoding information using late contexts
US6895120B2 (en) * 2001-03-30 2005-05-17 Ricoh Co., Ltd. 5,3 wavelet filter having three high pair and low pair filter elements with two pairs of cascaded delays
US7062101B2 (en) 2001-03-30 2006-06-13 Ricoh Co., Ltd. Method and apparatus for storing bitplanes of coefficients in a reduced size memory
US7006697B1 (en) 2001-03-30 2006-02-28 Ricoh Co., Ltd. Parallel block MQ arithmetic image compression of wavelet transform coefficients
US6950558B2 (en) 2001-03-30 2005-09-27 Ricoh Co., Ltd. Method and apparatus for block sequential processing
US7581027B2 (en) * 2001-06-27 2009-08-25 Ricoh Co., Ltd. JPEG 2000 for efficent imaging in a client/server environment
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US7280252B1 (en) 2001-12-19 2007-10-09 Ricoh Co., Ltd. Error diffusion of multiresolutional representations
US7095907B1 (en) 2002-01-10 2006-08-22 Ricoh Co., Ltd. Content and display device dependent creation of smaller representation of images
US7120305B2 (en) * 2002-04-16 2006-10-10 Ricoh, Co., Ltd. Adaptive nonlinear image enlargement using wavelet transform coefficients
US20080075377A1 (en) * 2003-07-29 2008-03-27 Topiwala Pankaj N Fast lapped image transforms using lifting steps
US7653255B2 (en) 2004-06-02 2010-01-26 Adobe Systems Incorporated Image region of interest encoding
US7639886B1 (en) 2004-10-04 2009-12-29 Adobe Systems Incorporated Determining scalar quantizers for a signal based on a target distortion
US7606289B2 (en) * 2005-07-29 2009-10-20 Lockheed Martin Corporation Overlaying digital signals on analog wireless communication signals
GB2453732B (en) * 2007-10-16 2012-03-07 Virtensys Ltd Data switch
KR101674415B1 (ko) * 2012-04-27 2016-11-09 삼성전자주식회사 디지털 신호 처리 시스템에서 신호 이득 제어 방법 및 장치

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US4894842A (en) * 1987-10-15 1990-01-16 The Charles Stark Draper Laboratory, Inc. Precorrelation digital spread spectrum receiver

Also Published As

Publication number Publication date
AU647343B2 (en) 1994-03-17
WO1992003002A1 (en) 1992-02-20
EP0542894A4 (en) 1993-08-04
EP0542894A1 (en) 1993-05-26
AU8501091A (en) 1992-03-02
IL98992A0 (en) 1992-07-15
JPH05509449A (ja) 1993-12-22
US5081645A (en) 1992-01-14
KR930701882A (ko) 1993-06-12

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