JP2554219B2 - ディジタル信号の重畳伝送方式 - Google Patents
ディジタル信号の重畳伝送方式Info
- Publication number
- JP2554219B2 JP2554219B2 JP3310782A JP31078291A JP2554219B2 JP 2554219 B2 JP2554219 B2 JP 2554219B2 JP 3310782 A JP3310782 A JP 3310782A JP 31078291 A JP31078291 A JP 31078291A JP 2554219 B2 JP2554219 B2 JP 2554219B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- speed
- low
- spread spectrum
- error correction
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Time-Division Multiplex Systems (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3310782A JP2554219B2 (ja) | 1991-11-26 | 1991-11-26 | ディジタル信号の重畳伝送方式 |
| DE69230663T DE69230663T2 (de) | 1991-11-26 | 1992-11-24 | Digitale Übertragungsanordnung mit überlagerten Signalen hoher und niedriger Geschwindigkeit |
| US07/980,919 US5280537A (en) | 1991-11-26 | 1992-11-24 | Digital communication system using superposed transmission of high speed and low speed digital signals |
| EP19920119979 EP0545225B1 (en) | 1991-11-26 | 1992-11-24 | Digital communication system using superposed transmission of high speed and low speed digital signals |
| CA 2083776 CA2083776C (en) | 1991-11-26 | 1992-11-25 | Digital communication system using superposed transmission of high speed and low speed digital signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3310782A JP2554219B2 (ja) | 1991-11-26 | 1991-11-26 | ディジタル信号の重畳伝送方式 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05153086A JPH05153086A (ja) | 1993-06-18 |
| JP2554219B2 true JP2554219B2 (ja) | 1996-11-13 |
Family
ID=18009406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3310782A Expired - Lifetime JP2554219B2 (ja) | 1991-11-26 | 1991-11-26 | ディジタル信号の重畳伝送方式 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5280537A (enExample) |
| EP (1) | EP0545225B1 (enExample) |
| JP (1) | JP2554219B2 (enExample) |
| CA (1) | CA2083776C (enExample) |
| DE (1) | DE69230663T2 (enExample) |
Families Citing this family (150)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5790587A (en) | 1991-05-13 | 1998-08-04 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
| US5815525A (en) | 1991-05-13 | 1998-09-29 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
| US5796772A (en) | 1991-05-13 | 1998-08-18 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
| US5694414A (en) | 1991-05-13 | 1997-12-02 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
| US5887020A (en) | 1991-05-13 | 1999-03-23 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
| WO1993012597A1 (en) | 1991-12-16 | 1993-06-24 | Omnipoint Corporation | Spread-spectrum data publishing system |
| GB2269075B (en) * | 1992-07-24 | 1996-04-10 | Roke Manor Research | Improvements in or relating to mobile cellular radio systems |
| US5721788A (en) | 1992-07-31 | 1998-02-24 | Corbis Corporation | Method and system for digital image signatures |
| US5465396A (en) | 1993-01-12 | 1995-11-07 | Usa Digital Radio Partners, L.P. | In-band on-channel digital broadcasting |
| WO1995012945A1 (en) * | 1993-11-01 | 1995-05-11 | Omnipoint Corporation | Despreading/demodulating direct sequence spread spectrum signals |
| US5436941A (en) * | 1993-11-01 | 1995-07-25 | Omnipoint Corporation | Spread spectrum spectral density techniques |
| US6094575A (en) | 1993-11-01 | 2000-07-25 | Omnipoint Corporation | Communication system and method |
| US6088590A (en) | 1993-11-01 | 2000-07-11 | Omnipoint Corporation | Method and system for mobile controlled handoff and link maintenance in spread spectrum communication |
| US6005856A (en) | 1993-11-01 | 1999-12-21 | Omnipoint Corporation | Communication protocol for spread spectrum wireless communication system |
| US5841886A (en) | 1993-11-18 | 1998-11-24 | Digimarc Corporation | Security system for photographic identification |
| US5748783A (en) | 1995-05-08 | 1998-05-05 | Digimarc Corporation | Method and apparatus for robust information coding |
| US6122403A (en) | 1995-07-27 | 2000-09-19 | Digimarc Corporation | Computer system linked by using information in data objects |
| EP0959620B1 (en) | 1993-11-18 | 2005-01-12 | Digimarc Corporation | Video with hidden in-band digital data |
| US6757406B2 (en) | 1993-11-18 | 2004-06-29 | Digimarc Corporation | Steganographic image processing |
| US6611607B1 (en) * | 1993-11-18 | 2003-08-26 | Digimarc Corporation | Integrating digital watermarks in multimedia content |
| US6614914B1 (en) | 1995-05-08 | 2003-09-02 | Digimarc Corporation | Watermark embedder and reader |
| US6516079B1 (en) | 2000-02-14 | 2003-02-04 | Digimarc Corporation | Digital watermark screening and detecting strategies |
| US6574350B1 (en) | 1995-05-08 | 2003-06-03 | Digimarc Corporation | Digital watermarking employing both frail and robust watermarks |
| US7171016B1 (en) | 1993-11-18 | 2007-01-30 | Digimarc Corporation | Method for monitoring internet dissemination of image, video and/or audio files |
| US5710834A (en) * | 1995-05-08 | 1998-01-20 | Digimarc Corporation | Method and apparatus responsive to a code signal conveyed through a graphic image |
| US5822436A (en) | 1996-04-25 | 1998-10-13 | Digimarc Corporation | Photographic products and methods employing embedded information |
| US6983051B1 (en) | 1993-11-18 | 2006-01-03 | Digimarc Corporation | Methods for audio watermarking and decoding |
| US7044395B1 (en) | 1993-11-18 | 2006-05-16 | Digimarc Corporation | Embedding and reading imperceptible codes on objects |
| US5841978A (en) * | 1993-11-18 | 1998-11-24 | Digimarc Corporation | Network linking method using steganographically embedded data objects |
| US5636292C1 (en) | 1995-05-08 | 2002-06-18 | Digimarc Corp | Steganography methods employing embedded calibration data |
| US6944298B1 (en) * | 1993-11-18 | 2005-09-13 | Digimare Corporation | Steganographic encoding and decoding of auxiliary codes in media signals |
| US6681028B2 (en) | 1995-07-27 | 2004-01-20 | Digimarc Corporation | Paper-based control of computer systems |
| US6449377B1 (en) * | 1995-05-08 | 2002-09-10 | Digimarc Corporation | Methods and systems for watermark processing of line art images |
| USRE40919E1 (en) * | 1993-11-18 | 2009-09-22 | Digimarc Corporation | Methods for surveying dissemination of proprietary empirical data |
| US6424725B1 (en) | 1996-05-16 | 2002-07-23 | Digimarc Corporation | Determining transformations of media signals with embedded code signals |
| US5768426A (en) | 1993-11-18 | 1998-06-16 | Digimarc Corporation | Graphics processing system employing embedded code signals |
| US5748763A (en) | 1993-11-18 | 1998-05-05 | Digimarc Corporation | Image steganography system featuring perceptually adaptive and globally scalable signal embedding |
| US6408082B1 (en) | 1996-04-25 | 2002-06-18 | Digimarc Corporation | Watermark detection using a fourier mellin transform |
| US5862260A (en) | 1993-11-18 | 1999-01-19 | Digimarc Corporation | Methods for surveying dissemination of proprietary empirical data |
| US5832119C1 (en) | 1993-11-18 | 2002-03-05 | Digimarc Corp | Methods for controlling systems using control signals embedded in empirical data |
| US5490148A (en) * | 1993-12-15 | 1996-02-06 | Motorola, Inc. | Bit error rate estimator |
| US6522770B1 (en) | 1999-05-19 | 2003-02-18 | Digimarc Corporation | Management of documents and other objects using optical devices |
| US7039214B2 (en) * | 1999-11-05 | 2006-05-02 | Digimarc Corporation | Embedding watermark components during separate printing stages |
| US6968057B2 (en) * | 1994-03-17 | 2005-11-22 | Digimarc Corporation | Emulsion products and imagery employing steganography |
| US6993152B2 (en) * | 1994-03-17 | 2006-01-31 | Digimarc Corporation | Hiding geo-location data through arrangement of objects |
| US6869023B2 (en) * | 2002-02-12 | 2005-03-22 | Digimarc Corporation | Linking documents through digital watermarking |
| CA2145566C (en) * | 1994-04-29 | 1999-12-28 | Nambirajan Seshadri | Methods of and devices for enhancing communications that use spread spectrum technology |
| US5546420A (en) * | 1994-04-29 | 1996-08-13 | At&T Corp. | Methods of and devices for enhancing communications that use spread spectrum technology by using variable code techniques |
| JP2877248B2 (ja) * | 1994-05-20 | 1999-03-31 | エヌ・ティ・ティ移動通信網株式会社 | Cdmaシステムにおける送信電力制御方法および装置 |
| US5495468A (en) * | 1994-06-10 | 1996-02-27 | Linkplus Corporation | System and method for transmitting plural information waveforms over a single communications channel using lincompex techniques |
| IL114471A0 (en) * | 1994-07-12 | 1996-01-31 | Usa Digital Radio Partners L P | Method and system for simultaneously broadcasting and analog signals |
| US5956624A (en) | 1994-07-12 | 1999-09-21 | Usa Digital Radio Partners Lp | Method and system for simultaneously broadcasting and receiving digital and analog signals |
| US5692007A (en) | 1994-09-09 | 1997-11-25 | Omnipoint Corporation | Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation |
| US5648982A (en) | 1994-09-09 | 1997-07-15 | Omnipoint Corporation | Spread spectrum transmitter |
| US5832028A (en) | 1994-09-09 | 1998-11-03 | Omnipoint Corporation | Method and apparatus for coherent serial correlation of a spread spectrum signal |
| US5659574A (en) | 1994-09-09 | 1997-08-19 | Omnipoint Corporation | Multi-bit correlation of continuous phase modulated signals |
| US5953370A (en) | 1994-09-09 | 1999-09-14 | Omnipoint Corporation | Apparatus for receiving and correlating a spread spectrum signal |
| US5610940A (en) | 1994-09-09 | 1997-03-11 | Omnipoint Corporation | Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal |
| US5627856A (en) | 1994-09-09 | 1997-05-06 | Omnipoint Corporation | Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators |
| US5754584A (en) | 1994-09-09 | 1998-05-19 | Omnipoint Corporation | Non-coherent spread-spectrum continuous-phase modulation communication system |
| US5963586A (en) | 1994-09-09 | 1999-10-05 | Omnipoint Corporation | Method and apparatus for parallel noncoherent correlation of a spread spectrum signal |
| US5856998A (en) | 1994-09-09 | 1999-01-05 | Omnipoint Corporation | Method and apparatus for correlating a continuous phase modulated spread spectrum signal |
| US5629956A (en) | 1994-09-09 | 1997-05-13 | Omnipoint Corporation | Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal |
| US5757847A (en) | 1994-09-09 | 1998-05-26 | Omnipoint Corporation | Method and apparatus for decoding a phase encoded signal |
| US5881100A (en) | 1994-09-09 | 1999-03-09 | Omnipoint Corporation | Method and apparatus for coherent correlation of a spread spectrum signal |
| US5754585A (en) | 1994-09-09 | 1998-05-19 | Omnipoint Corporation | Method and apparatus for serial noncoherent correlation of a spread spectrum signal |
| US5680414A (en) | 1994-09-09 | 1997-10-21 | Omnipoint Corporation | Synchronization apparatus and method for spread spectrum receiver |
| US6560349B1 (en) | 1994-10-21 | 2003-05-06 | Digimarc Corporation | Audio monitoring using steganographic information |
| US6535618B1 (en) * | 1994-10-21 | 2003-03-18 | Digimarc Corporation | Image capture device with steganographic data embedding |
| US7724919B2 (en) * | 1994-10-21 | 2010-05-25 | Digimarc Corporation | Methods and systems for steganographic processing |
| US5742583A (en) | 1994-11-03 | 1998-04-21 | Omnipoint Corporation | Antenna diversity techniques |
| MY121893A (en) * | 1995-04-28 | 2006-03-31 | Qualcomm Inc | Method and apparatus for providing variable rate data in a communications system using statistical multiplexing. |
| US6728390B2 (en) | 1995-05-08 | 2004-04-27 | Digimarc Corporation | Methods and systems using multiple watermarks |
| US6590996B1 (en) | 2000-02-14 | 2003-07-08 | Digimarc Corporation | Color adaptive watermarking |
| US6721440B2 (en) | 1995-05-08 | 2004-04-13 | Digimarc Corporation | Low visibility watermarks using an out-of-phase color |
| US6760463B2 (en) | 1995-05-08 | 2004-07-06 | Digimarc Corporation | Watermarking methods and media |
| US7486799B2 (en) * | 1995-05-08 | 2009-02-03 | Digimarc Corporation | Methods for monitoring audio and images on the internet |
| US5745484A (en) * | 1995-06-05 | 1998-04-28 | Omnipoint Corporation | Efficient communication system using time division multiplexing and timing adjustment control |
| US6356607B1 (en) | 1995-06-05 | 2002-03-12 | Omnipoint Corporation | Preamble code structure and detection method and apparatus |
| US7020111B2 (en) * | 1996-06-27 | 2006-03-28 | Interdigital Technology Corporation | System for using rapid acquisition spreading codes for spread-spectrum communications |
| ZA965340B (en) * | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
| CA2154298C (en) * | 1995-07-20 | 2002-06-18 | Robert S. Hannebauer | Spread spectrum data communicator |
| US6965682B1 (en) | 1999-05-19 | 2005-11-15 | Digimarc Corp | Data transmission by watermark proxy |
| US6829368B2 (en) | 2000-01-26 | 2004-12-07 | Digimarc Corporation | Establishing and interacting with on-line media collections using identifiers in media signals |
| US6408331B1 (en) * | 1995-07-27 | 2002-06-18 | Digimarc Corporation | Computer linking methods using encoded graphics |
| US6577746B1 (en) * | 1999-12-28 | 2003-06-10 | Digimarc Corporation | Watermark-based object linking and embedding |
| US6788800B1 (en) | 2000-07-25 | 2004-09-07 | Digimarc Corporation | Authenticating objects using embedded data |
| US6411725B1 (en) | 1995-07-27 | 2002-06-25 | Digimarc Corporation | Watermark enabled video objects |
| US7006661B2 (en) | 1995-07-27 | 2006-02-28 | Digimarc Corp | Digital watermarking systems and methods |
| JPH09153918A (ja) * | 1995-11-30 | 1997-06-10 | Nippon Telegr & Teleph Corp <Ntt> | ディジタル伝送装置 |
| US5761209A (en) * | 1996-03-15 | 1998-06-02 | Nec Corporation | Method of transmitting digital signals, transmitter and receiver used therefor |
| JPH09261201A (ja) * | 1996-03-19 | 1997-10-03 | Hitachi Denshi Ltd | スペクトラム拡散伝送方式 |
| US6381341B1 (en) | 1996-05-16 | 2002-04-30 | Digimarc Corporation | Watermark encoding method exploiting biases inherent in original signal |
| US7412072B2 (en) * | 1996-05-16 | 2008-08-12 | Digimarc Corporation | Variable message coding protocols for encoding auxiliary data in media signals |
| US5859840A (en) * | 1996-05-31 | 1999-01-12 | Qualcomm Incorporated | Spread spectrum communication system which defines channel groups comprising selected channels that are additional to a primary channel and transmits group messages during call set up |
| US6094415A (en) * | 1996-06-20 | 2000-07-25 | Lockheed Martin Corporation | Vector division multiple access communication system |
| FR2752345A1 (fr) * | 1996-08-08 | 1998-02-13 | Europ Agence Spatiale | Systeme de transmission par satellite presentant un canal de retour |
| US6496543B1 (en) | 1996-10-29 | 2002-12-17 | Qualcomm Incorporated | Method and apparatus for providing high speed data communications in a cellular environment |
| US6141373A (en) | 1996-11-15 | 2000-10-31 | Omnipoint Corporation | Preamble code structure and detection method and apparatus |
| US6173007B1 (en) * | 1997-01-15 | 2001-01-09 | Qualcomm Inc. | High-data-rate supplemental channel for CDMA telecommunications system |
| US6335922B1 (en) | 1997-02-11 | 2002-01-01 | Qualcomm Incorporated | Method and apparatus for forward link rate scheduling |
| US7751370B2 (en) | 2001-07-13 | 2010-07-06 | Qualcomm Incorporated | Method and apparatus for forward link rate scheduling |
| US6404828B2 (en) | 1997-03-12 | 2002-06-11 | Interdigital Technology Corporation | Multichannel decoder |
| US6005898A (en) * | 1997-03-12 | 1999-12-21 | Interdigital Technology Corporation | Multichannel viterbi decoder |
| US20060262832A1 (en) * | 1997-03-12 | 2006-11-23 | Interdigital Technology Corporation | Convolutionally encoding and decoding multiple data streams |
| US6282228B1 (en) | 1997-03-20 | 2001-08-28 | Xircom, Inc. | Spread spectrum codes for use in communication |
| JPH1175165A (ja) | 1997-08-29 | 1999-03-16 | Sony Corp | スペクトラム拡散信号の検出方法および検出装置 |
| JPH1188848A (ja) * | 1997-09-02 | 1999-03-30 | Sony Corp | 付加情報重畳伝送方法、付加情報重畳伝送システム、付加情報重畳装置および付加情報検出装置並びに記録媒体 |
| EP0901282B1 (en) | 1997-09-03 | 2006-06-28 | Hitachi, Ltd. | Method for recording and reproducing electronic watermark information |
| US20020051434A1 (en) * | 1997-10-23 | 2002-05-02 | Ozluturk Fatih M. | Method for using rapid acquisition spreading codes for spread-spectrum communications |
| US9118387B2 (en) * | 1997-11-03 | 2015-08-25 | Qualcomm Incorporated | Pilot reference transmission for a wireless communication system |
| US6574211B2 (en) | 1997-11-03 | 2003-06-03 | Qualcomm Incorporated | Method and apparatus for high rate packet data transmission |
| US7184426B2 (en) * | 2002-12-12 | 2007-02-27 | Qualcomm, Incorporated | Method and apparatus for burst pilot for a time division multiplex system |
| US6804376B2 (en) | 1998-01-20 | 2004-10-12 | Digimarc Corporation | Equipment employing watermark-based authentication function |
| US6275509B1 (en) | 1998-05-14 | 2001-08-14 | The United States Of America As Represented By The Secretary Of The Navy | Masked signal transceiver |
| JP3362009B2 (ja) * | 1999-03-01 | 2003-01-07 | シャープ株式会社 | スペクトル拡散通信装置 |
| US6947469B2 (en) | 1999-05-07 | 2005-09-20 | Intel Corporation | Method and Apparatus for wireless spread spectrum communication with preamble processing period |
| US8064409B1 (en) | 1999-08-25 | 2011-11-22 | Qualcomm Incorporated | Method and apparatus using a multi-carrier forward link in a wireless communication system |
| US6621804B1 (en) | 1999-10-07 | 2003-09-16 | Qualcomm Incorporated | Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel |
| US6608919B1 (en) * | 1999-11-10 | 2003-08-19 | Digimarc Corporation | Method and apparatus for encoding paper with information |
| US6625297B1 (en) | 2000-02-10 | 2003-09-23 | Digimarc Corporation | Self-orienting watermarks |
| US7027614B2 (en) | 2000-04-19 | 2006-04-11 | Digimarc Corporation | Hiding information to reduce or offset perceptible artifacts |
| US6804377B2 (en) | 2000-04-19 | 2004-10-12 | Digimarc Corporation | Detecting information hidden out-of-phase in color channels |
| US6973098B1 (en) * | 2000-10-25 | 2005-12-06 | Qualcomm, Incorporated | Method and apparatus for determining a data rate in a high rate packet data wireless communications system |
| US7068683B1 (en) | 2000-10-25 | 2006-06-27 | Qualcomm, Incorporated | Method and apparatus for high rate packet data and low delay data transmissions |
| US7254249B2 (en) * | 2001-03-05 | 2007-08-07 | Digimarc Corporation | Embedding location data in video |
| US9363409B2 (en) * | 2001-03-05 | 2016-06-07 | Digimarc Corporation | Image management system and methods using digital watermarks |
| US7061510B2 (en) | 2001-03-05 | 2006-06-13 | Digimarc Corporation | Geo-referencing of aerial imagery using embedded image identifiers and cross-referenced data sets |
| US7249257B2 (en) | 2001-03-05 | 2007-07-24 | Digimarc Corporation | Digitally watermarked maps and signs and related navigational tools |
| US7042470B2 (en) * | 2001-03-05 | 2006-05-09 | Digimarc Corporation | Using embedded steganographic identifiers in segmented areas of geographic images and characteristics corresponding to imagery data derived from aerial platforms |
| US6950519B2 (en) * | 2001-03-05 | 2005-09-27 | Digimarc Corporation | Geographically watermarked imagery and methods |
| US7197160B2 (en) * | 2001-03-05 | 2007-03-27 | Digimarc Corporation | Geographic information systems using digital watermarks |
| US6907093B2 (en) | 2001-08-08 | 2005-06-14 | Viasat, Inc. | Method and apparatus for relayed communication using band-pass signals for self-interference cancellation |
| JP3997890B2 (ja) | 2001-11-13 | 2007-10-24 | 松下電器産業株式会社 | 送信方法及び送信装置 |
| US6725017B2 (en) | 2001-12-05 | 2004-04-20 | Viasat, Inc. | Multi-channel self-interference cancellation method and apparatus for relayed communication |
| WO2003052680A1 (en) | 2001-12-18 | 2003-06-26 | Digimarc Id System, Llc | Multiple image security features for identification documents and methods of making same |
| US7728048B2 (en) | 2002-12-20 | 2010-06-01 | L-1 Secure Credentialing, Inc. | Increasing thermal conductivity of host polymer used with laser engraving methods and compositions |
| ATE555911T1 (de) * | 2001-12-24 | 2012-05-15 | L 1 Secure Credentialing Inc | Verfahren zur vollfarb-markierung von id- dokumenten |
| AU2002364255A1 (en) * | 2001-12-24 | 2003-07-15 | Digimarc Id Systems, Llc | Covert variable information on id documents and methods of making same |
| US7694887B2 (en) * | 2001-12-24 | 2010-04-13 | L-1 Secure Credentialing, Inc. | Optically variable personalized indicia for identification documents |
| US6996164B1 (en) | 2002-01-15 | 2006-02-07 | Viasat, Inc. | Self-interference removal using converter compensation in a relayed communication system |
| US7824029B2 (en) | 2002-05-10 | 2010-11-02 | L-1 Secure Credentialing, Inc. | Identification card printer-assembler for over the counter card issuing |
| AU2003298731A1 (en) | 2002-11-26 | 2004-06-18 | Digimarc Id Systems | Systems and methods for managing and detecting fraud in image databases used with identification documents |
| US7712673B2 (en) | 2002-12-18 | 2010-05-11 | L-L Secure Credentialing, Inc. | Identification document with three dimensional image of bearer |
| ATE491190T1 (de) | 2003-04-16 | 2010-12-15 | L 1 Secure Credentialing Inc | Dreidimensionale datenspeicherung |
| WO2005076985A2 (en) | 2004-02-04 | 2005-08-25 | Digimarc Corporation | Digital watermarking image signals on-chip and photographic travel logs through digital watermarking |
| US7744002B2 (en) * | 2004-03-11 | 2010-06-29 | L-1 Secure Credentialing, Inc. | Tamper evident adhesive and identification document including same |
| US8140848B2 (en) | 2004-07-01 | 2012-03-20 | Digimarc Corporation | Digital watermark key generation |
| US20070177654A1 (en) * | 2006-01-31 | 2007-08-02 | Vladimir Levitine | Detecting signal carriers of multiple types of signals in radio frequency input for amplification |
| US8811200B2 (en) * | 2009-09-22 | 2014-08-19 | Qualcomm Incorporated | Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US32905A (en) * | 1861-07-23 | Daniel B Waite | Watch and socket rim | |
| US3752921A (en) * | 1970-11-04 | 1973-08-14 | Ibm | Distinct complex signals formed by plural clipping transformations of superposed isochronal pulse code sequences |
| JPS5824060B2 (ja) * | 1979-06-08 | 1983-05-19 | 日本電信電話株式会社 | 音声帯域多重伝送方式 |
| USRE32905F1 (en) | 1980-10-20 | 1992-11-10 | Satellite communications system and apparatus | |
| US4355399A (en) * | 1981-02-23 | 1982-10-19 | Bell Telephone Laboratories, Incorporated | Adaptive spread spectrum FH-MFSK transmitter and receiver |
| US4425661A (en) * | 1981-09-03 | 1984-01-10 | Applied Spectrum Technologies, Inc. | Data under voice communications system |
| US4495620A (en) * | 1982-08-05 | 1985-01-22 | At&T Bell Laboratories | Transmitting data on the phase of speech |
| US4761796A (en) * | 1985-01-24 | 1988-08-02 | Itt Defense Communications | High frequency spread spectrum communication system terminal |
| US4849990A (en) * | 1985-06-05 | 1989-07-18 | Fumio Ikegami | Digital communication system |
| JPS62254529A (ja) * | 1986-04-28 | 1987-11-06 | Nec Corp | 衛星システムにおけるデ−タ伝送方式 |
| US4748636A (en) * | 1986-04-28 | 1988-05-31 | Nec Corporation | Method and apparatus of transmitting image data in a satellite system |
| CA1318402C (en) * | 1986-05-16 | 1993-05-25 | Kouzou Kage | Signal communication capable of avoiding an audible reproduction of a sequency of information signals |
| DE3644174A1 (de) * | 1986-12-23 | 1988-07-14 | Messerschmitt Boelkow Blohm | Verfahren zur uebertragung von nachrichten ueber satelliten |
| DE3644168A1 (de) * | 1986-12-23 | 1988-07-14 | Messerschmitt Boelkow Blohm | Verfahren zur datenuebertragung ueber satelliten mittels gespreizten spektren und kleinen erdefunkstellen |
| JPS6451837A (en) * | 1987-08-24 | 1989-02-28 | Nec Corp | Small sized earth station |
| JPS6465473A (en) * | 1987-09-04 | 1989-03-10 | Nec Corp | Satellite communication and position measurement system for moving body |
| CA1293999C (en) * | 1987-08-24 | 1992-01-07 | Osamu Ichiyoshi | Earth station capable of effectively using a frequency band of asatellite |
| FR2630871B1 (fr) * | 1988-04-29 | 1994-03-18 | Alcatel Cit | Procede et dispositif d'adjonction et de separation d'un canal numerique a bas debit au canal numerique a haut debit d'une liaison de transmission |
| US5022046A (en) * | 1989-04-14 | 1991-06-04 | The United States Of America As Represented By The Secretary Of The Air Force | Narrowband/wideband packet data communication system |
| US5036513A (en) * | 1989-06-21 | 1991-07-30 | Academy Of Applied Science | Method of and apparatus for integrated voice (audio) communication simultaneously with "under voice" user-transparent digital data between telephone instruments |
| US5136592A (en) * | 1989-06-28 | 1992-08-04 | Digital Equipment Corporation | Error detection and correction system for long burst errors |
| DE3935911A1 (de) * | 1989-10-27 | 1991-05-02 | Deutsche Forsch Luft Raumfahrt | Verfahren zur empfangsseitigen bitdetektion von differentiell codierten binaeren oder quaternaeren psk-signalen bei differentiellkohaerenter demodulation |
| JPH03179923A (ja) * | 1989-12-08 | 1991-08-05 | Matsushita Electric Ind Co Ltd | Bch符号の復号方法および装置 |
-
1991
- 1991-11-26 JP JP3310782A patent/JP2554219B2/ja not_active Expired - Lifetime
-
1992
- 1992-11-24 DE DE69230663T patent/DE69230663T2/de not_active Expired - Lifetime
- 1992-11-24 US US07/980,919 patent/US5280537A/en not_active Expired - Lifetime
- 1992-11-24 EP EP19920119979 patent/EP0545225B1/en not_active Expired - Lifetime
- 1992-11-25 CA CA 2083776 patent/CA2083776C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2083776C (en) | 1998-09-29 |
| JPH05153086A (ja) | 1993-06-18 |
| US5280537A (en) | 1994-01-18 |
| EP0545225B1 (en) | 2000-02-09 |
| CA2083776A1 (en) | 1993-05-27 |
| DE69230663D1 (de) | 2000-03-16 |
| EP0545225A2 (en) | 1993-06-09 |
| DE69230663T2 (de) | 2000-07-06 |
| EP0545225A3 (enExample) | 1994-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2554219B2 (ja) | ディジタル信号の重畳伝送方式 | |
| JP2785489B2 (ja) | 複合波形形成方法および装置 | |
| US7349487B2 (en) | Nyquist filter and method | |
| JP2998204B2 (ja) | 拡散スペクトル雑音をキャンセルする方法および装置 | |
| US5623485A (en) | Dual mode code division multiple access communication system and method | |
| US5325394A (en) | Method and apparatus for canceling spread-spectrum noise | |
| JP2520535B2 (ja) | Cdmaスペクトル拡散無線伝送システムにおける無線信号の受信装置 | |
| KR100592631B1 (ko) | 협대역 간섭이 있는 확산 스펙트럼 신호 수신방법 및 장치 | |
| US5642384A (en) | Trellis coded modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle | |
| JP3814688B2 (ja) | 伝送方法及びその方法を実行するための装置 | |
| JPH08340279A (ja) | スペクトル拡散通信方法及びその装置 | |
| JP3217947B2 (ja) | 通信方法及び装置 | |
| JPS612459A (ja) | 周波数復調器 | |
| JP3201444B2 (ja) | ディジタル信号の重畳伝送方式 | |
| US5479417A (en) | Error correction apparatus capable of improving error correction ability without expansion of a frequency band | |
| JPH08298498A (ja) | マルチキャリア送信装置及び受信装置 | |
| JP2000124842A (ja) | 伝送装置および信号点発生方法 | |
| Sugiyama et al. | Burst mode interference cancellation for superposed transmission of SSMA-QPSK signals and TDMA-QPSK signals in nonlinear channels | |
| US6788751B1 (en) | Frequency diversity digital wireless system | |
| JP3326035B2 (ja) | 階層的伝送用スペクトル拡散時分割多重装置および時分割多重信号分離装置 | |
| Morikura et al. | SSMA signal transmission over QPSK modulated signal | |
| Tokuda et al. | Data transmission performance in a narrow band system | |
| JPH05227228A (ja) | ディジタル信号の伝送方式 | |
| JPH0786981A (ja) | ディジタル信号伝送方法 | |
| JPH08163077A (ja) | 通信システム |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070822 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080822 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080822 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090822 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090822 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100822 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100822 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110822 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120822 Year of fee payment: 16 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120822 Year of fee payment: 16 |