JPS54127216A - Color-television telephone set - Google Patents
Color-television telephone setInfo
- Publication number
- JPS54127216A JPS54127216A JP3417878A JP3417878A JPS54127216A JP S54127216 A JPS54127216 A JP S54127216A JP 3417878 A JP3417878 A JP 3417878A JP 3417878 A JP3417878 A JP 3417878A JP S54127216 A JPS54127216 A JP S54127216A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- photo
- circuit
- synchronizing
- converter
- 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
Landscapes
- Color Television Systems (AREA)
Abstract
PURPOSE: To attain the economization and miniaturization of a TV telephone set paying attention to the loss and broad band of optical fiber, light-wavelength multiplication technique, and output signal waveform of a single-tube system TV pickup tube.
CONSTITUTION: At a transmission side, single-tube system color pickup tube 28 is driven by sending out a synchronizing signal from synchronizing-signal generating circuit 30 via deflecting circuit 29; the video signal of a subject is extracted as a video output and a TV signal with the synchronizing signal superposed upon at terminal 31 is converted into a photo signal of light wavelength (λ1) by electrophoto converter circuit 32. This signal of (λ1) is passed through optical fiber 341, applied to line 343 via photo branching filter 34, and inputted to photo converter 35. At a reception side, the photo signal of light wavelength (λ2) having passed through photo converter 35 is inputted to photoelectric converter 36, by way of line 343, photo branching filter 33, and optical fiber 342, where a single-tube system color signal is regenerated. The output of circuit 36 is branched into two at terminal 37; one is inputted to synchronizing-signal separator circuit 39, and the other is to color-signal processing circuit 38 where three primary color signals R, G and B are regenerated.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3417878A JPS54127216A (en) | 1978-03-27 | 1978-03-27 | Color-television telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3417878A JPS54127216A (en) | 1978-03-27 | 1978-03-27 | Color-television telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54127216A true JPS54127216A (en) | 1979-10-03 |
Family
ID=12406945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3417878A Pending JPS54127216A (en) | 1978-03-27 | 1978-03-27 | Color-television telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54127216A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04207747A (en) * | 1990-11-30 | 1992-07-29 | Nippon Telegr & Teleph Corp <Ntt> | Sound/image synchronism transmission system |
-
1978
- 1978-03-27 JP JP3417878A patent/JPS54127216A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04207747A (en) * | 1990-11-30 | 1992-07-29 | Nippon Telegr & Teleph Corp <Ntt> | Sound/image synchronism transmission system |
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