JPS5632852A - Composite transmission system for data and sound - Google Patents
Composite transmission system for data and soundInfo
- Publication number
- JPS5632852A JPS5632852A JP10884979A JP10884979A JPS5632852A JP S5632852 A JPS5632852 A JP S5632852A JP 10884979 A JP10884979 A JP 10884979A JP 10884979 A JP10884979 A JP 10884979A JP S5632852 A JPS5632852 A JP S5632852A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- frame
- data
- silent
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/064—Data transmission during pauses in telephone conversation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
PURPOSE:To obtain a composite transmission system for data and sound that can secure the transparency of sound by putting an error recovering method into operation as to data frames and by inhibiting error recovery control as to sound frames. CONSTITUTION:A composite signal, including a data frame inserted into a silent sound frame, from the transmission side is received by receiving buffer RB and the sound frame and data frame are distributed by sound-data distributing circuit DIS to buffers SBR and DBR respectively. On reception of the data frame, silent-sound- frame generating circuit NSG sends the silent sound frame to sound frame buffer SBR. Expected-sequence-number generating circuit ESN and sequence-number checking circuit SNC check the normalcy of the data frame to make a response for error control by way of sending circuit NR or RR for an answer signal for the normalcy or resending request.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10884979A JPS5632852A (en) | 1979-08-27 | 1979-08-27 | Composite transmission system for data and sound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10884979A JPS5632852A (en) | 1979-08-27 | 1979-08-27 | Composite transmission system for data and sound |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5632852A true JPS5632852A (en) | 1981-04-02 |
JPS622743B2 JPS622743B2 (en) | 1987-01-21 |
Family
ID=14495138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10884979A Granted JPS5632852A (en) | 1979-08-27 | 1979-08-27 | Composite transmission system for data and sound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5632852A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58173932A (en) * | 1982-04-05 | 1983-10-12 | Oki Electric Ind Co Ltd | Packet transmission system |
JPH03253131A (en) * | 1990-03-01 | 1991-11-12 | Mitsubishi Electric Corp | Sound/data multiplexing circuit |
JPH0433454A (en) * | 1990-05-30 | 1992-02-04 | Fujitsu Ltd | Information transmitter |
EP0806873A3 (en) * | 1996-05-08 | 1998-11-18 | Matsushita Electric Industrial Co., Ltd. | Multiplex transmission method and system, and audio jitter absorbing method used therein |
JP2009021781A (en) * | 2007-07-11 | 2009-01-29 | Nec Corp | Data communication system, communication equipment, data communication method, and program for communication control |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5429504A (en) * | 1977-08-09 | 1979-03-05 | Fujitsu Ltd | Simultaneous service system for audio and date communication |
JPS5429902A (en) * | 1977-08-10 | 1979-03-06 | Fujitsu Ltd | Error retransmission control system |
JPS5437408A (en) * | 1977-08-27 | 1979-03-19 | Fujitsu Ltd | Aural bucket process system |
-
1979
- 1979-08-27 JP JP10884979A patent/JPS5632852A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5429504A (en) * | 1977-08-09 | 1979-03-05 | Fujitsu Ltd | Simultaneous service system for audio and date communication |
JPS5429902A (en) * | 1977-08-10 | 1979-03-06 | Fujitsu Ltd | Error retransmission control system |
JPS5437408A (en) * | 1977-08-27 | 1979-03-19 | Fujitsu Ltd | Aural bucket process system |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58173932A (en) * | 1982-04-05 | 1983-10-12 | Oki Electric Ind Co Ltd | Packet transmission system |
JPH03253131A (en) * | 1990-03-01 | 1991-11-12 | Mitsubishi Electric Corp | Sound/data multiplexing circuit |
JPH0433454A (en) * | 1990-05-30 | 1992-02-04 | Fujitsu Ltd | Information transmitter |
JP2562375B2 (en) * | 1990-05-30 | 1996-12-11 | 富士通株式会社 | Information transmission device |
EP0806873A3 (en) * | 1996-05-08 | 1998-11-18 | Matsushita Electric Industrial Co., Ltd. | Multiplex transmission method and system, and audio jitter absorbing method used therein |
JP2009021781A (en) * | 2007-07-11 | 2009-01-29 | Nec Corp | Data communication system, communication equipment, data communication method, and program for communication control |
Also Published As
Publication number | Publication date |
---|---|
JPS622743B2 (en) | 1987-01-21 |
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