JPS6314544B2 - - Google Patents

Info

Publication number
JPS6314544B2
JPS6314544B2 JP54024773A JP2477379A JPS6314544B2 JP S6314544 B2 JPS6314544 B2 JP S6314544B2 JP 54024773 A JP54024773 A JP 54024773A JP 2477379 A JP2477379 A JP 2477379A JP S6314544 B2 JPS6314544 B2 JP S6314544B2
Authority
JP
Japan
Prior art keywords
signal
data signal
terminal
delta modulation
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.)
Expired
Application number
JP54024773A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55117371A (en
Inventor
Shinichi Aiko
Kunihiko Niwa
Takeshi Sawai
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.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP2477379A priority Critical patent/JPS55117371A/ja
Publication of JPS55117371A publication Critical patent/JPS55117371A/ja
Publication of JPS6314544B2 publication Critical patent/JPS6314544B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
    • H04B14/062—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM]
    • H04B14/064—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM] with adaptive feedback
JP2477379A 1979-03-02 1979-03-02 Transmission method for analog telephone signal Granted JPS55117371A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2477379A JPS55117371A (en) 1979-03-02 1979-03-02 Transmission method for analog telephone signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2477379A JPS55117371A (en) 1979-03-02 1979-03-02 Transmission method for analog telephone signal

Publications (2)

Publication Number Publication Date
JPS55117371A JPS55117371A (en) 1980-09-09
JPS6314544B2 true JPS6314544B2 (ru) 1988-03-31

Family

ID=12147482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2477379A Granted JPS55117371A (en) 1979-03-02 1979-03-02 Transmission method for analog telephone signal

Country Status (1)

Country Link
JP (1) JPS55117371A (ru)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58111559A (ja) * 1981-12-25 1983-07-02 Nec Corp デジタル複合端末切換方式
JPS6072331A (ja) * 1983-09-28 1985-04-24 Nec Corp 反響制御装置用自動デイセイブラ
JPS6072329A (ja) * 1983-09-28 1985-04-24 Nec Corp 反響制御装置用自動デイセイブラ
JPS60219818A (ja) * 1984-04-17 1985-11-02 Fujitsu Ten Ltd 無線装置
JPS63141423A (ja) * 1986-12-03 1988-06-13 Matsushita Electric Ind Co Ltd 符号化復号化装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839104A (ru) * 1971-09-22 1973-06-08
JPS5084103A (ru) * 1973-11-27 1975-07-07

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839104A (ru) * 1971-09-22 1973-06-08
JPS5084103A (ru) * 1973-11-27 1975-07-07

Also Published As

Publication number Publication date
JPS55117371A (en) 1980-09-09

Similar Documents

Publication Publication Date Title
US5995558A (en) Rob bit compensation system and method associated with a receiver or codec
US6400728B1 (en) Method and system for detecting user data types in digital communications channels and optimizing encoding-error correction in response thereto
JP3252782B2 (ja) モデム信号対応音声符号化復号化装置
US4386237A (en) NIC Processor using variable precision block quantization
CA1258532A (en) Coding device selectively connected to a transmission line
US4639778A (en) Embedding quantization system for vector signals
US6073030A (en) Use of RSSI indication for improved data transmission over amps network
JPS6314544B2 (ru)
US6229846B1 (en) Apparatus and method for implementing high speed modem communication support
EP0486232B1 (en) ADPCM decoder with error detection
US20020015415A1 (en) Transmission apparatus capable of transmitting high speed modem signal
US6144853A (en) Method and apparatus for digital cordless telephony
JP2809524B2 (ja) デジタル伝送システムの同期方式
EP0202596B1 (en) Improvements to the systems for bidirectional digital transmission with echo-cancellation
CA2290307A1 (en) A method and apparatus for efficient bandwidth usage in a packet switching network
JPS6319951A (ja) 音声信号およびデ−タ信号の併合伝送方法およびその送信装置ならびに受信装置
US6147973A (en) Signal discrimination apparatus, a method for discriminating a signal, and a signal transmitting apparatus for voiceband signals
US5878119A (en) Idle suppression and signal threshold determination therefor
IE50947B1 (en) A system for measuring the attenuation on a transmission path
JP2691189B2 (ja) 符号復号器
JP2751172B2 (ja) 音声／モデム切替え型適応差分ｐｃｍ信号伝送方法及びその復号化装置
JPH0795165A (ja) Ａｄｐｃｍ符号化装置
JP2842643B2 (ja) ディジタル音声回線試験回路
JPS6028453B2 (ja) 符号化方式
JP2831661B2 (ja) 伝送装置