JPS57188150A - Multiplex signal transmission system - Google Patents
Multiplex signal transmission systemInfo
- Publication number
- JPS57188150A JPS57188150A JP56073723A JP7372381A JPS57188150A JP S57188150 A JPS57188150 A JP S57188150A JP 56073723 A JP56073723 A JP 56073723A JP 7372381 A JP7372381 A JP 7372381A JP S57188150 A JPS57188150 A JP S57188150A
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- audio channel
- sub
- signal
- detection gate
- 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
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
- Electrophonic Musical Instruments (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
PURPOSE:To transmit music signals with high quality equivalently, by transmitting information relating to the music signal with a binary code, to a transmission line in which the frequency band such as subchannel of multiplex broadcast is limited and the quality is not sufficient. CONSTITUTION:A sub-carrier wave outside of an audible band of a main audio channel is FSK-modulated with a synchronizing signal, a tone control signal, and binary code in each 4-bit representing a harmonic control signal and an envelope control signal and transmitted from a transmission side. At a reception side, a main audio channel and a sub-audio channel are demodulated, and a sub- audio channel signal is applied to a synchronizing detection circuit 3, a tone control signal detection gate 4, a harmonic wave control signal detection gate 5, and an envelope control signal detection gate 6 via a wave shape circuit 2, and a music signal can be reproduced by giving the outputs to a saw tooth variable frequency oscillator 10, a pass band variable filter 11, and a variable level controller 12 through code converters and storage devices 7-9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56073723A JPS57188150A (en) | 1981-05-15 | 1981-05-15 | Multiplex signal transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56073723A JPS57188150A (en) | 1981-05-15 | 1981-05-15 | Multiplex signal transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57188150A true JPS57188150A (en) | 1982-11-19 |
JPS6315777B2 JPS6315777B2 (en) | 1988-04-06 |
Family
ID=13526426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56073723A Granted JPS57188150A (en) | 1981-05-15 | 1981-05-15 | Multiplex signal transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57188150A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6967276B2 (en) | 1999-07-28 | 2005-11-22 | Yamaha Corporation | Portable telephony apparatus with music tone generator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3589122B2 (en) * | 1999-11-01 | 2004-11-17 | ヤマハ株式会社 | Portable terminal device |
-
1981
- 1981-05-15 JP JP56073723A patent/JPS57188150A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6967276B2 (en) | 1999-07-28 | 2005-11-22 | Yamaha Corporation | Portable telephony apparatus with music tone generator |
US7119268B2 (en) | 1999-07-28 | 2006-10-10 | Yamaha Corporation | Portable telephony apparatus with music tone generator |
US7161081B2 (en) | 1999-07-28 | 2007-01-09 | Yamaha Corporation | Portable telephony apparatus with music tone generator |
US7514624B2 (en) | 1999-07-28 | 2009-04-07 | Yamaha Corporation | Portable telephony apparatus with music tone generator |
Also Published As
Publication number | Publication date |
---|---|
JPS6315777B2 (en) | 1988-04-06 |
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