GB1358766A - Colour television signal recording and reproducing system - Google Patents
Colour television signal recording and reproducing systemInfo
- Publication number
- GB1358766A GB1358766A GB4189571A GB4189571A GB1358766A GB 1358766 A GB1358766 A GB 1358766A GB 4189571 A GB4189571 A GB 4189571A GB 4189571 A GB4189571 A GB 4189571A GB 1358766 A GB1358766 A GB 1358766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- subcarrier
- signal
- colour
- luminance
- mhz
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/843—Television signal recording using optical recording on film
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Systems (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
1358766 Recording colour television signals MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 8 Sept 1971 [9 Sept 1970 (2) 14 Sept 1970 (2)] 41895/71 Heading H4F A colour television signal is recorded on monochrome film by combining the luminance and two chrominance signals in frequency multiplex manner, at least one chrominance signal being amplitude-modulated on a subcarrier and the subcarrier being suppressed. As shown in Fig. 2 the I signal is so modulated on to a 1À25 MHz subcarrier, the Q signal is unmodulated, and the luminance signal is amplitude-modulated on to a 5 MHz subcarrier in vestigial sideband form, the integral relationship between subcarrier frequencies enabling the recovery of the 1À25 MHz subcarrier from the luminance subcarrier. Such an arrangement is stated to eliminate interference effects on the luminance signal due to harmonics of the colour subcarrier. In a modification of this arrangement (Fig. 4, not shown) the I and Q signals are combined in phase quadrature to modulate the 1À25 MHz subcarrier. Other similar arrangements with subcarrier frequencies so chosen as to facilitate the recovery of a colour signal to NTSC standards are described. In all these arrangements one colour frame is recorded on one film frame by the synchronized scanning thereof.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45079467A JPS509128B1 (en) | 1970-09-09 | 1970-09-09 | |
| JP45079468A JPS5129380B1 (en) | 1970-09-09 | 1970-09-09 | |
| JP45080759A JPS509130B1 (en) | 1970-09-14 | 1970-09-14 | |
| JP8076070 | 1970-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1358766A true GB1358766A (en) | 1974-07-03 |
Family
ID=27466313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4189571A Expired GB1358766A (en) | 1970-09-09 | 1971-09-08 | Colour television signal recording and reproducing system |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA957070A (en) |
| FR (1) | FR2106404B1 (en) |
| GB (1) | GB1358766A (en) |
| NL (1) | NL7112356A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1437620B2 (en) * | 1964-06-16 | 1973-02-01 | Columbia Broadcasting System Ine, New York, N Y (V St A) | PROCESS AND DEVICE FOR RECORDING AND REPLAYING COLORED IMAGES IN THE FORM OF ELECTRICAL SIGNALS BY MEANS OF A MONOCHROMATIC RADIATION-SENSITIVE RECORDING MEDIA |
-
1971
- 1971-09-08 NL NL7112356A patent/NL7112356A/xx not_active Application Discontinuation
- 1971-09-08 CA CA122,342A patent/CA957070A/en not_active Expired
- 1971-09-08 FR FR7132484A patent/FR2106404B1/fr not_active Expired
- 1971-09-08 GB GB4189571A patent/GB1358766A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2144967A1 (en) | 1972-03-23 |
| NL7112356A (en) | 1972-03-13 |
| FR2106404B1 (en) | 1976-10-29 |
| FR2106404A1 (en) | 1972-05-05 |
| CA957070A (en) | 1974-10-29 |
| DE2144967B2 (en) | 1976-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PE20 | Patent expired after termination of 20 years |