JPS5656053A - Multiplex communication system for sound signal and data or picture signal - Google Patents
Multiplex communication system for sound signal and data or picture signalInfo
- Publication number
- JPS5656053A JPS5656053A JP13190779A JP13190779A JPS5656053A JP S5656053 A JPS5656053 A JP S5656053A JP 13190779 A JP13190779 A JP 13190779A JP 13190779 A JP13190779 A JP 13190779A JP S5656053 A JPS5656053 A JP S5656053A
- Authority
- JP
- Japan
- Prior art keywords
- frequency band
- picture signal
- data
- width
- signal
- 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)
Abstract
PURPOSE:To transmit data or a picture signal with a little deterioration in the quality of communication by reducing the width of the frequency band of a block having a higher sound frequency component and by using a frequency band that becomes unnecessary as a result of the reduction in frequency band width. CONSTITUTION:A sound signal for a telephone call is separated into two blocks through LPF2 and HPF3. Then, one block having a lower frequency component is transmitted with the nearly equal width of the frequency band. On the other hand, the width of the frequency band of the other block having a higher frequency component is reduced 4 and a frequency band that becomes unnecessary as a result of the reduction of the frequency band is utilized to transmit data or a picture signal. Thus, the data or picture signal can effectively be transmitted with a little deterioration in the quality of the talk of sound communication.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13190779A JPS5656053A (en) | 1979-10-15 | 1979-10-15 | Multiplex communication system for sound signal and data or picture signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13190779A JPS5656053A (en) | 1979-10-15 | 1979-10-15 | Multiplex communication system for sound signal and data or picture signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5656053A true JPS5656053A (en) | 1981-05-16 |
Family
ID=15068953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13190779A Pending JPS5656053A (en) | 1979-10-15 | 1979-10-15 | Multiplex communication system for sound signal and data or picture signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5656053A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5948158U (en) * | 1982-09-20 | 1984-03-30 | 三洋電機株式会社 | Audio band transmission equipment |
US5150365A (en) * | 1986-11-18 | 1992-09-22 | Hitachi, Ltd. | Communication system for coexistent base band and broad band signals |
-
1979
- 1979-10-15 JP JP13190779A patent/JPS5656053A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5948158U (en) * | 1982-09-20 | 1984-03-30 | 三洋電機株式会社 | Audio band transmission equipment |
US5150365A (en) * | 1986-11-18 | 1992-09-22 | Hitachi, Ltd. | Communication system for coexistent base band and broad band signals |
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