JPS5728440A - Transmission system of control signal - Google Patents
Transmission system of control signalInfo
- Publication number
- JPS5728440A JPS5728440A JP10347980A JP10347980A JPS5728440A JP S5728440 A JPS5728440 A JP S5728440A JP 10347980 A JP10347980 A JP 10347980A JP 10347980 A JP10347980 A JP 10347980A JP S5728440 A JPS5728440 A JP S5728440A
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- notation counter
- output
- notation
- counter
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Selective Calling Equipment (AREA)
Abstract
PURPOSE:To detect a control signal at reception side without error easily, by transmitting the data of fixed pattern as a control signal. CONSTITUTION:At the transmission side, a data (b) in which pulses of ''1'' or ''0'' are consecutive is transmitted as a control signal. At the reception side, a conversion circuit 26 converts a reception signal into an RZ code (c), and pulses of ''1s'' in the RZ code (c) are counted with an m-notation counter 22 reset with the output (d) of an n-notation counter 21. The output (d) of the n-notation counter 21 and the output (e) of the m-notation counter 22 are compared at a comparator 23, and the reception of the control signal (b) is judged only when the output (e) of the m-notation counter 22 is given to the comparator 23. In case of a voice signal, since ''1'' and ''0'' are produced in the 50% probability, the relation between the number of stages (n) of the n-notation counter 21 and that of (m) of the m-notation counter 22 is taken as n>(m-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10347980A JPS5728440A (en) | 1980-07-28 | 1980-07-28 | Transmission system of control signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10347980A JPS5728440A (en) | 1980-07-28 | 1980-07-28 | Transmission system of control signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5728440A true JPS5728440A (en) | 1982-02-16 |
| JPS6221459B2 JPS6221459B2 (en) | 1987-05-13 |
Family
ID=14355140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10347980A Granted JPS5728440A (en) | 1980-07-28 | 1980-07-28 | Transmission system of control signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5728440A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59187073A (en) * | 1983-04-06 | 1984-10-24 | Hitachi Chem Co Ltd | Base material for friction material |
| JPS59187074A (en) * | 1983-04-06 | 1984-10-24 | Hitachi Chem Co Ltd | Base material for friction material |
-
1980
- 1980-07-28 JP JP10347980A patent/JPS5728440A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59187073A (en) * | 1983-04-06 | 1984-10-24 | Hitachi Chem Co Ltd | Base material for friction material |
| JPS59187074A (en) * | 1983-04-06 | 1984-10-24 | Hitachi Chem Co Ltd | Base material for friction material |
| JPS6026519B2 (en) * | 1983-04-06 | 1985-06-24 | 日立化成工業株式会社 | Base material for friction materials |
| JPS6027705B2 (en) * | 1983-04-06 | 1985-07-01 | 日立化成工業株式会社 | Base material for friction materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6221459B2 (en) | 1987-05-13 |
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