JPS57202171A - Portable type modulation and demodulation device - Google Patents
Portable type modulation and demodulation deviceInfo
- Publication number
- JPS57202171A JPS57202171A JP8566481A JP8566481A JPS57202171A JP S57202171 A JPS57202171 A JP S57202171A JP 8566481 A JP8566481 A JP 8566481A JP 8566481 A JP8566481 A JP 8566481A JP S57202171 A JPS57202171 A JP S57202171A
- Authority
- JP
- Japan
- Prior art keywords
- handset
- main body
- demodulation device
- portable type
- demodulation
- 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
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
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
PURPOSE:To obtain the small-sized pocketable or the like titled device, by using electromagnetic coupling as a reception coupling system, in a portable type modulation and demodulation device used for a data transmission service using a telephone line, etc. CONSTITUTION:Main body of a modulation and demodulation device 9 has a transmitter of a handset 2, and a magnetic pickup 11 is fitted near the receiver of the handset 2 with adsorption, etc. A transmission data is modulated with the main body 9 and enters the transmitter of the handset 2 as sound from a transmission speaker 10 and is transmitted via a telephone line. The received data is picked up with a magnetic pickup 11 fitted near the receiver of the handset 2 by means of the adsorption through electromagnetic coupling and transmitted to a terminal device DTE(not shown) via a connector 12 through demodulation at the main body 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8566481A JPS57202171A (en) | 1981-06-05 | 1981-06-05 | Portable type modulation and demodulation device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8566481A JPS57202171A (en) | 1981-06-05 | 1981-06-05 | Portable type modulation and demodulation device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57202171A true JPS57202171A (en) | 1982-12-10 |
Family
ID=13865084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8566481A Pending JPS57202171A (en) | 1981-06-05 | 1981-06-05 | Portable type modulation and demodulation device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57202171A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5233130U (en) * | 1975-08-30 | 1977-03-08 |
-
1981
- 1981-06-05 JP JP8566481A patent/JPS57202171A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5233130U (en) * | 1975-08-30 | 1977-03-08 |
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