JPS5765976A - Detecting device for television multiplexed signal - Google Patents
Detecting device for television multiplexed signalInfo
- Publication number
- JPS5765976A JPS5765976A JP14349180A JP14349180A JPS5765976A JP S5765976 A JPS5765976 A JP S5765976A JP 14349180 A JP14349180 A JP 14349180A JP 14349180 A JP14349180 A JP 14349180A JP S5765976 A JPS5765976 A JP S5765976A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- multiplexed
- horizontal synchronizing
- output
- recorded
- 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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
- H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Abstract
PURPOSE:To obtain a device by which only a desired signal is recorded in a memory but the noise and other video signals are not recorded, by using a signal synchronized with the horizontal synchronizing signal to discriminate a character information signal and etc. in the vertical blanking interval. CONSTITUTION:A means which generates a timing signal for successive retrieval of positions of superposed multiplexed signals synchronously with the horizontal synchronizing signal during the vertical blanking interval, a means which detects beginnings of respective multiplexed signals and a specific code, and a means which controls the output of multiplexed signals are provided. For example, a binary multiplexed signal, the horizontal synchronizing signal, and a clock signal based on the CRI signal are applied from terminals 33, 34 and 35 respectively, and a pulse output is issued from an input AND circuit 6 only when the FC signal indicating the beginning of the multiplexed signal and a signal which discriminates the H pulse and types of the multiplexed signal are normal, thereby controlling a gate output and types of the jultiplexed signal are normal, thereby controlling a gate output 31.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14349180A JPS5765976A (en) | 1980-10-13 | 1980-10-13 | Detecting device for television multiplexed signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14349180A JPS5765976A (en) | 1980-10-13 | 1980-10-13 | Detecting device for television multiplexed signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5765976A true JPS5765976A (en) | 1982-04-21 |
Family
ID=15339938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14349180A Pending JPS5765976A (en) | 1980-10-13 | 1980-10-13 | Detecting device for television multiplexed signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5765976A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028391A (en) * | 1983-07-26 | 1985-02-13 | Mitsubishi Electric Corp | Television receiver |
-
1980
- 1980-10-13 JP JP14349180A patent/JPS5765976A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028391A (en) * | 1983-07-26 | 1985-02-13 | Mitsubishi Electric Corp | Television receiver |
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