AT299317B - Frequency division multiplex system for the transmission of telephone and videophone channels - Google Patents
Frequency division multiplex system for the transmission of telephone and videophone channelsInfo
- Publication number
- AT299317B AT299317B AT1169270A AT1169270A AT299317B AT 299317 B AT299317 B AT 299317B AT 1169270 A AT1169270 A AT 1169270A AT 1169270 A AT1169270 A AT 1169270A AT 299317 B AT299317 B AT 299317B
- Authority
- AT
- Austria
- Prior art keywords
- videophone
- telephone
- channels
- transmission
- frequency division
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/148—Interfacing a video terminal to a particular transmission medium, e.g. ISDN
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Multimedia (AREA)
- Time-Division Multiplex Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702004011 DE2004011B2 (en) | 1970-01-29 | 1970-01-29 | FREQUENCY MULTIPLEX SYSTEM FOR TRANSMISSION OF TELEPHONE AND VIDEO-PHONE CHANNELS |
DE19702003980 DE2003980C (en) | 1970-01-29 | Frequency division multiplex system for the transmission of telephone and videophone channels |
Publications (1)
Publication Number | Publication Date |
---|---|
AT299317B true AT299317B (en) | 1972-06-12 |
Family
ID=25758559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT1169270A AT299317B (en) | 1970-01-29 | 1970-12-29 | Frequency division multiplex system for the transmission of telephone and videophone channels |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS50524B1 (en) |
AT (1) | AT299317B (en) |
CH (1) | CH524936A (en) |
FR (1) | FR2077084A5 (en) |
GB (1) | GB1328002A (en) |
NL (1) | NL151867B (en) |
SE (1) | SE415817B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT992878B (en) * | 1972-08-11 | 1975-09-30 | Siemens Ag | SYSTEM FOR TRANSMITTING TELEVISION AND TELEPHONE BANDS TOGETHER ON WIDE BAND GLASS FREQUENCY SYSTEMS |
JPS5326528U (en) * | 1976-08-14 | 1978-03-07 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1048952B (en) * | 1956-08-27 | 1959-01-22 | Felten & Guilleaume Gmbh | 12 MHz carrier frequency system built from an already existing 4 MHz carrier frequency system (V 960) |
DE1025457B (en) * | 1956-08-29 | 1958-03-06 | Felten & Guilleaume Gmbh | 12 MHz carrier frequency system built from an already existing 4 MHz system |
-
1970
- 1970-12-22 CH CH1901170A patent/CH524936A/en not_active IP Right Cessation
- 1970-12-29 AT AT1169270A patent/AT299317B/en not_active IP Right Cessation
- 1970-12-30 JP JP13045570A patent/JPS50524B1/ja active Pending
-
1971
- 1971-01-25 NL NL7100956A patent/NL151867B/en unknown
- 1971-01-28 FR FR7102794A patent/FR2077084A5/fr not_active Expired
- 1971-01-29 SE SE108371A patent/SE415817B/en unknown
- 1971-04-19 GB GB2028471A patent/GB1328002A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE415817B (en) | 1980-10-27 |
NL7100956A (en) | 1971-08-02 |
JPS50524B1 (en) | 1975-01-09 |
GB1328002A (en) | 1973-08-22 |
NL151867B (en) | 1976-12-15 |
CH524936A (en) | 1972-06-30 |
FR2077084A5 (en) | 1971-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |