JPS6237583B2 - - Google Patents
Info
- Publication number
- JPS6237583B2 JPS6237583B2 JP55175360A JP17536080A JPS6237583B2 JP S6237583 B2 JPS6237583 B2 JP S6237583B2 JP 55175360 A JP55175360 A JP 55175360A JP 17536080 A JP17536080 A JP 17536080A JP S6237583 B2 JPS6237583 B2 JP S6237583B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- communication
- modem
- clock
- line
- 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
Links
- 238000004891 communication Methods 0.000 claims description 40
- 239000000872 buffer Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 10
- 230000003139 buffering effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/14—Arrangements for detecting or preventing errors in the information received by using return channel in which the signals are sent back to the transmitter to be checked ; echo systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1438—Negotiation of transmission parameters prior to communication
- H04L5/1446—Negotiation of transmission parameters prior to communication of transmission speed
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Communication Control (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55175360A JPS5799048A (en) | 1980-12-12 | 1980-12-12 | Modulator and demodulator device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55175360A JPS5799048A (en) | 1980-12-12 | 1980-12-12 | Modulator and demodulator device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5799048A JPS5799048A (en) | 1982-06-19 |
JPS6237583B2 true JPS6237583B2 (ko) | 1987-08-13 |
Family
ID=15994708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55175360A Granted JPS5799048A (en) | 1980-12-12 | 1980-12-12 | Modulator and demodulator device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5799048A (ko) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4771417A (en) * | 1986-09-18 | 1988-09-13 | Racal Data Communications, Inc. | High speed modem |
JP2689681B2 (ja) * | 1990-04-11 | 1997-12-10 | 日本電気株式会社 | 回線自動切替方式 |
CA2086854C (en) * | 1992-03-30 | 1998-03-31 | David Joseph Brigida | Method and system for automatic modem protocol selection in a cellular communications system |
JP2659498B2 (ja) * | 1992-05-19 | 1997-09-30 | メガソフト株式会社 | 通信装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5361216A (en) * | 1976-11-12 | 1978-06-01 | Fujitsu Ltd | Facsimile electric transmission system |
JPS5421108A (en) * | 1977-07-18 | 1979-02-17 | Matsushita Electric Ind Co Ltd | Judging method of most suited delivery speed of modem |
JPS5527777A (en) * | 1978-08-19 | 1980-02-28 | Fujitsu Ltd | Control system for picture signal transmission |
JPS5593372A (en) * | 1979-01-10 | 1980-07-15 | Matsushita Graphic Commun Syst Inc | Multiple address unit such as facsimile and the like |
-
1980
- 1980-12-12 JP JP55175360A patent/JPS5799048A/ja active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5361216A (en) * | 1976-11-12 | 1978-06-01 | Fujitsu Ltd | Facsimile electric transmission system |
JPS5421108A (en) * | 1977-07-18 | 1979-02-17 | Matsushita Electric Ind Co Ltd | Judging method of most suited delivery speed of modem |
JPS5527777A (en) * | 1978-08-19 | 1980-02-28 | Fujitsu Ltd | Control system for picture signal transmission |
JPS5593372A (en) * | 1979-01-10 | 1980-07-15 | Matsushita Graphic Commun Syst Inc | Multiple address unit such as facsimile and the like |
Also Published As
Publication number | Publication date |
---|---|
JPS5799048A (en) | 1982-06-19 |
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