JPS5250487B2 - - Google Patents

Info

Publication number
JPS5250487B2
JPS5250487B2 JP47013015A JP1301572A JPS5250487B2 JP S5250487 B2 JPS5250487 B2 JP S5250487B2 JP 47013015 A JP47013015 A JP 47013015A JP 1301572 A JP1301572 A JP 1301572A JP S5250487 B2 JPS5250487 B2 JP S5250487B2
Authority
JP
Japan
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
Application number
JP47013015A
Other versions
JPS4882710A (ja
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 filed Critical
Priority to JP47013015A priority Critical patent/JPS5250487B2/ja
Priority to US00328809A priority patent/US3829779A/en
Priority to DE19732305075 priority patent/DE2305075C3/de
Priority to GB561973A priority patent/GB1377724A/en
Publication of JPS4882710A publication Critical patent/JPS4882710A/ja
Publication of JPS5250487B2 publication Critical patent/JPS5250487B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery circuits
JP47013015A 1972-02-04 1972-02-04 Expired JPS5250487B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP47013015A JPS5250487B2 (ja) 1972-02-04 1972-02-04
US00328809A US3829779A (en) 1972-02-04 1973-02-01 Multilevel code transmission system
DE19732305075 DE2305075C3 (de) 1972-02-04 1973-02-02 System zur Übertragung mehrstufiger Codes
GB561973A GB1377724A (en) 1972-02-04 1973-02-05 Multilevel code transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47013015A JPS5250487B2 (ja) 1972-02-04 1972-02-04

Publications (2)

Publication Number Publication Date
JPS4882710A JPS4882710A (ja) 1973-11-05
JPS5250487B2 true JPS5250487B2 (ja) 1977-12-24

Family

ID=11821316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47013015A Expired JPS5250487B2 (ja) 1972-02-04 1972-02-04

Country Status (3)

Country Link
US (1) US3829779A (ja)
JP (1) JPS5250487B2 (ja)
GB (1) GB1377724A (ja)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4945608A (ja) * 1972-09-01 1974-05-01
JPS5325729B2 (ja) * 1973-09-27 1978-07-28
US3925611A (en) * 1974-08-12 1975-12-09 Bell Telephone Labor Inc Combined scrambler-encoder for multilevel digital data
JPS51144167A (en) * 1975-06-04 1976-12-10 Nec Corp Digital phase modulation method
JPS5224409A (en) * 1975-08-20 1977-02-23 Fujitsu Ltd Partial response modulation system
JPS5943865B2 (ja) * 1975-10-14 1984-10-25 日本電気株式会社 パ−シヤルレスポンス方式
JPS52116103A (en) * 1976-03-26 1977-09-29 Kokusai Denshin Denwa Co Ltd Multistage selection dpcm system
US4202040A (en) * 1976-04-27 1980-05-06 The United States Of America As Represented By The Secretary Of The Navy Data processing system
US4135057A (en) * 1976-09-07 1979-01-16 Arthur A. Collins, Inc. High density digital transmission system
GB1592556A (en) * 1976-10-28 1981-07-08 Rixon Quadrature-amplitude-modulation data transmission systems and transmitters
US4472813A (en) * 1981-03-30 1984-09-18 Nippon Electric Co., Ltd. Transmission system for intentionally violating a class IV partial response code to distinguish subsidiary signals from an error
NL8201533A (nl) * 1982-04-13 1983-11-01 Philips Nv Een zender ingericht voor het zenden van fm gemoduleerde signalen.
JPS59126342A (ja) * 1983-01-10 1984-07-20 Nec Corp デジタル音声信号伝送方式
US4562582A (en) * 1983-04-18 1985-12-31 Nippon Telegraph & Telephone Public Corporation Burst signal receiving apparatus
FR2559006B1 (fr) * 1984-01-31 1986-05-02 Thomson Csf Dispositif de codage-decodage d'un train de signaux numeriques binaires pour modulateur-demodulateur numerique " oqpsk " a quatre etats de phase
JP2845705B2 (ja) * 1993-01-14 1999-01-13 日本電気株式会社 多レベル符号化変調通信装置
KR100238284B1 (ko) * 1997-05-12 2000-01-15 윤종용 위상 보정 회로 및 그 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388330A (en) * 1965-03-19 1968-06-11 Bell Telephone Labor Inc Partial response multilevel data system
US3462687A (en) * 1965-05-28 1969-08-19 Bell Telephone Labor Inc Automatic phase control for a multilevel coded vestigial sideband data system
US3697874A (en) * 1966-12-29 1972-10-10 Nippon Electric Co Multilevel code conversion system
US3492578A (en) * 1967-05-19 1970-01-27 Bell Telephone Labor Inc Multilevel partial-response data transmission
FR96465E (fr) * 1968-01-13 1972-06-30 Philips Nv Systeme de transmission d'impulsions.
US3573622A (en) * 1968-04-23 1971-04-06 Bell Telephone Labor Inc Partial-response signal sampling for half-speed data transmission
US3679977A (en) * 1969-06-24 1972-07-25 Bell Telephone Labor Inc Precoded ternary data transmission
US3720875A (en) * 1971-11-03 1973-03-13 Ibm Differential encoding with lookahead feature

Also Published As

Publication number Publication date
JPS4882710A (ja) 1973-11-05
DE2305075A1 (de) 1973-08-09
GB1377724A (en) 1974-12-18
DE2305075B2 (de) 1975-06-19
US3829779A (en) 1974-08-13

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