DE1766907B2 - Verfahren und schaltungsanordnung zur verschluesselten durchschaltung von nachrichten - Google Patents

Verfahren und schaltungsanordnung zur verschluesselten durchschaltung von nachrichten

Info

Publication number
DE1766907B2
DE1766907B2 DE19681766907 DE1766907A DE1766907B2 DE 1766907 B2 DE1766907 B2 DE 1766907B2 DE 19681766907 DE19681766907 DE 19681766907 DE 1766907 A DE1766907 A DE 1766907A DE 1766907 B2 DE1766907 B2 DE 1766907B2
Authority
DE
Germany
Prior art keywords
code signal
message
line
input
circuit
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.)
Withdrawn
Application number
DE19681766907
Other languages
German (de)
English (en)
Other versions
DE1766907A1 (de
Inventor
Hermann Lawrence Baltimore Blasbalg, Md. (V.St.A.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE1766907A1 publication Critical patent/DE1766907A1/de
Publication of DE1766907B2 publication Critical patent/DE1766907B2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L23/00—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
    • H04L23/02—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00 adapted for orthogonal signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE19681766907 1967-09-15 1968-08-09 Verfahren und schaltungsanordnung zur verschluesselten durchschaltung von nachrichten Withdrawn DE1766907B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66797267A 1967-09-15 1967-09-15

Publications (2)

Publication Number Publication Date
DE1766907A1 DE1766907A1 (de) 1974-11-21
DE1766907B2 true DE1766907B2 (de) 1976-01-15

Family

ID=24680442

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681766907 Withdrawn DE1766907B2 (de) 1967-09-15 1968-08-09 Verfahren und schaltungsanordnung zur verschluesselten durchschaltung von nachrichten

Country Status (5)

Country Link
US (1) US3715508A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5118764B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1766907B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1605095A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1298471A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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GB8909051D0 (en) * 1989-04-21 2001-04-11 Secr Defence A high data rate multiplexed multichannel high frequency broadcast system
US6693951B1 (en) 1990-06-25 2004-02-17 Qualcomm Incorporated System and method for generating signal waveforms in a CDMA cellular telephone system
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
BR9206980A (pt) * 1991-12-23 1995-12-05 Compfax Corp Sistema de transmissão de TV sem varredura
DE4302830C1 (de) * 1993-01-27 1994-03-03 Siemens Ag Rückgekoppeltes Schieberegister zum Erzeugen von Pseudozufallszahlenfolgen darstellenden digitalen Signalen
CN1103147C (zh) * 1994-07-29 2003-03-12 夸尔柯姆股份有限公司 Cdma通信系统中进行搜索捕获的改进方法和装置
ZA961025B (en) * 1995-02-28 1996-07-16 Qualcomm Inc Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels
US6292476B1 (en) * 1997-04-16 2001-09-18 Qualcomm Inc. Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels
JP2818129B2 (ja) * 1995-03-27 1998-10-30 秋田県 情報記録再生方式及びその情報記録再生方式を適用したデータ記録再生装置
US6977967B1 (en) * 1995-03-31 2005-12-20 Qualcomm Incorporated Method and apparatus for performing fast power control in a mobile communication system
TW347616B (en) 1995-03-31 1998-12-11 Qualcomm Inc Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed.
US5805648A (en) * 1995-07-31 1998-09-08 Qualcomm Incorporated Method and apparatus for performing search acquisition in a CDMA communication system
DE69735031D1 (de) * 1996-04-04 2006-03-30 New Japan Radio Corp Ltd Korrelator für Spreizspektrumsignale
US6396804B2 (en) 1996-05-28 2002-05-28 Qualcomm Incorporated High data rate CDMA wireless communication system
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US5926500A (en) * 1996-05-28 1999-07-20 Qualcomm Incorporated Reduced peak-to-average transmit power high data rate CDMA wireless communication system
US5930230A (en) 1996-05-28 1999-07-27 Qualcomm Incorporated High data rate CDMA wireless communication system
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
US5790589A (en) * 1996-08-14 1998-08-04 Qualcomm Incorporated System and method for rapidly reacquiring a pilot channel
US5893035A (en) * 1996-09-16 1999-04-06 Qualcomm Incorporated Centralized forward link power control
US6496543B1 (en) 1996-10-29 2002-12-17 Qualcomm Incorporated Method and apparatus for providing high speed data communications in a cellular environment
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
US5991284A (en) * 1997-02-13 1999-11-23 Qualcomm Inc. Subchannel control loop
JP3724676B2 (ja) * 1997-03-10 2005-12-07 ソニー株式会社 通信方法及び送信装置並びに受信装置
KR100365346B1 (ko) * 1997-09-09 2003-04-11 삼성전자 주식회사 이동통신시스템의쿼시직교부호생성및쿼시직교부호를이용한대역확산장치및방법
US6101173A (en) * 1998-03-16 2000-08-08 Qualcomm Incorporated Adaptive reacquisition time in a slotted paging environment
WO1999049596A1 (en) * 1998-03-26 1999-09-30 Samsung Electronics Co., Ltd. Device and method for controlling powers of orthogonal channel and quasi-orthogonal channel in cdma communication system
KR100318959B1 (ko) * 1998-07-07 2002-04-22 윤종용 부호분할다중접속통신시스템의서로다른부호간의간섭을제거하는장치및방법
US6157611A (en) * 1998-08-18 2000-12-05 Qualcomm Inc. Method and apparatus for transmission and construction of quasi orthogonal vectors
RU2193282C2 (ru) * 1998-09-08 2002-11-20 Самсунг Электроникс Ко., Лтд. Устройство и способ выработки четверичного комплексного квазиортогонального кода и расширения сигнала передачи с использованием квазиортогонального кода в системе связи мдкр
CN1130867C (zh) * 1998-09-25 2003-12-10 三星电子株式会社 在移动通信系统中生成准正交码和扩展信道信号的设备和方法
EP1001567A1 (en) * 1998-11-13 2000-05-17 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Combiner
EP1011281A3 (en) 1998-12-18 2000-07-05 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Flexible CDMA combiner
US8199696B2 (en) * 2001-03-29 2012-06-12 Qualcomm Incorporated Method and apparatus for power control in a wireless communication system
US7688976B2 (en) * 2005-07-14 2010-03-30 Tara Chand Singhal Random wave envelope derived random numbers and their use in generating transient keys in communication security application part I
JP2007243545A (ja) * 2006-03-08 2007-09-20 Nec Corp 多重化スイッチング回路及び多重化スイッチング方法
AT504196B1 (de) * 2006-09-15 2012-04-15 Frequentis Gmbh Verfahren und system zur übertragung von vertraulichen und nicht vertraulichen daten
EP2136520A1 (en) * 2008-06-20 2009-12-23 Nokia Siemens Networks Oy Method and device for processing data and communication system comprising such device

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NL109840C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1957-02-26
US3244808A (en) * 1962-01-12 1966-04-05 Massachusetts Inst Technology Pulse code modulation with few amplitude steps
US3518547A (en) * 1966-06-14 1970-06-30 Ibm Digital communication system employing multiplex transmission of maximal length binary sequences
US3488445A (en) * 1966-11-14 1970-01-06 Bell Telephone Labor Inc Orthogonal frequency multiplex data transmission system
US3484554A (en) * 1967-03-02 1969-12-16 Itt Pseudo-orthogonal pulse code system

Also Published As

Publication number Publication date
US3715508A (en) 1973-02-06
JPS5118764B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-06-12
FR1605095A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-01-12
GB1298471A (en) 1972-12-06
DE1766907A1 (de) 1974-11-21

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Legal Events

Date Code Title Description
8239 Disposal/non-payment of the annual fee