JPS6454842A - Device and system for modulation/demodulation - Google Patents

Device and system for modulation/demodulation

Info

Publication number
JPS6454842A
JPS6454842A JP21010687A JP21010687A JPS6454842A JP S6454842 A JPS6454842 A JP S6454842A JP 21010687 A JP21010687 A JP 21010687A JP 21010687 A JP21010687 A JP 21010687A JP S6454842 A JPS6454842 A JP S6454842A
Authority
JP
Japan
Prior art keywords
modem
macroinstruction
demodulation
constitution
signal processing
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.)
Pending
Application number
JP21010687A
Other languages
Japanese (ja)
Inventor
Yasuyuki Kojima
Yasushi Yokosuka
Takeshi Shimanuki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP21010687A priority Critical patent/JPS6454842A/en
Priority to US07/236,917 priority patent/US5259000A/en
Publication of JPS6454842A publication Critical patent/JPS6454842A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To simplify the constitution and the control system of a modem and to realize the modem with high capacity and high performance by the combination of macroinstructions, by constituting and controlling the model by a macroinstruction input means, a response output means, the interpreting and executing means of the macroinstruction, and the macroinstruction. CONSTITUTION:In the modem 1 equipped with a means which performs modulation and demodulation and a means 2 to control them, a means 9 to input the macroinstruction, means 10 and 11 to interpret and execute the macroinstruction, and a means 12 to output a response corresponding to the macroinstruction are provided, and the modem 1 is controlled by the macroinstruction inputted from the outside. In such a way, it is possible to realize a modem control system most suitable for one chip device for a universal modem, profitable and with high performance, and a signal processing parameter, etc., in the modem 1 can be changed prior to starting the signal processing of the modem 1.
JP21010687A 1987-08-26 1987-08-26 Device and system for modulation/demodulation Pending JPS6454842A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP21010687A JPS6454842A (en) 1987-08-26 1987-08-26 Device and system for modulation/demodulation
US07/236,917 US5259000A (en) 1987-08-26 1988-09-23 Modulator-demodulator apparatus and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21010687A JPS6454842A (en) 1987-08-26 1987-08-26 Device and system for modulation/demodulation

Publications (1)

Publication Number Publication Date
JPS6454842A true JPS6454842A (en) 1989-03-02

Family

ID=16583910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21010687A Pending JPS6454842A (en) 1987-08-26 1987-08-26 Device and system for modulation/demodulation

Country Status (1)

Country Link
JP (1) JPS6454842A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0676096A1 (en) * 1993-10-28 1995-10-11 Motorola, Inc. Demodulator logic unit adaptable to multiple data protocols

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148451A (en) * 1981-03-11 1982-09-13 Oki Electric Ind Co Ltd Modem receiver for facsimile
JPS60214142A (en) * 1984-04-10 1985-10-26 Matsushita Electric Ind Co Ltd Modulator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148451A (en) * 1981-03-11 1982-09-13 Oki Electric Ind Co Ltd Modem receiver for facsimile
JPS60214142A (en) * 1984-04-10 1985-10-26 Matsushita Electric Ind Co Ltd Modulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0676096A1 (en) * 1993-10-28 1995-10-11 Motorola, Inc. Demodulator logic unit adaptable to multiple data protocols
EP0676096A4 (en) * 1993-10-28 1999-08-25 Motorola Inc Demodulator logic unit adaptable to multiple data protocols.

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