GB1183485A - Improvements in and relating to the Recording of Television Signals - Google Patents
Improvements in and relating to the Recording of Television SignalsInfo
- Publication number
- GB1183485A GB1183485A GB2168067A GB2168067A GB1183485A GB 1183485 A GB1183485 A GB 1183485A GB 2168067 A GB2168067 A GB 2168067A GB 2168067 A GB2168067 A GB 2168067A GB 1183485 A GB1183485 A GB 1183485A
- Authority
- GB
- United Kingdom
- Prior art keywords
- displayed
- fields
- film
- display screen
- recording
- 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
- 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
- H04N5/846—Television signal recording using optical recording on film the film moving intermittently
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Abstract
1,183,485. Recording television pictures. BRITISH BROADCASTING CORP. 10 April, 1968 [10 May, 1967], No. 21680/67. Heading H4F. The specification describes a method of recording television pictures on intermittently moving film wherein alternate fields 2, 4 &c. (see video signals in Fig.) are displayed on a first display screen A, the fields are delayed by a time T less than a field period and those delayed fields 1<SP>1</SP>, 3<SP>1</SP>, 5<SP>1</SP> &c. not displayed on display screen A are displayed on a second display screen B. The two display screens are photographed on the intermittently moving film, the movement of the film taking place during the interval T + t when no field is being displayed. Thus the film rate is 25 frames per second for a television frequency of 50 fields per second and the "pull down" time is extended. To take up no more than one film frame the two displays must be exactly aligned to form an interlaced picture, possibly by means of a prism module.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2168067A GB1183485A (en) | 1967-05-10 | 1967-05-10 | Improvements in and relating to the Recording of Television Signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2168067A GB1183485A (en) | 1967-05-10 | 1967-05-10 | Improvements in and relating to the Recording of Television Signals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1183485A true GB1183485A (en) | 1970-03-04 |
Family
ID=10167025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2168067A Expired GB1183485A (en) | 1967-05-10 | 1967-05-10 | Improvements in and relating to the Recording of Television Signals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1183485A (en) |
-
1967
- 1967-05-10 GB GB2168067A patent/GB1183485A/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |