GB1306178A - - Google Patents
Info
- Publication number
- GB1306178A GB1306178A GB1306178DA GB1306178A GB 1306178 A GB1306178 A GB 1306178A GB 1306178D A GB1306178D A GB 1306178DA GB 1306178 A GB1306178 A GB 1306178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- arrangement
- camera
- delay
- signals
- 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
- H04N5/14—Picture signal circuitry for video frequency region
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
1306178 Television STANDARD TELEPHONES & CABLES Ltd 24 June 1971 29578/71 Heading H4F An arrangement for image enhancement of a television camera output in low-light conditions provides a one-frame delay for the camera video output so that the delayed and undelayed signals may be added to effectively decrease the scanning rate, at the expense of reduced moving- picture resolution. The Specification describes a feed-back loop arrangement in which an attenuator in the feedback path successively reduces the effect of the signals of one frame on the following frame outputs, and also a multiple arrangement as in Fig. 4 in which eight magnetic drum tracks provide four one-frame delays (each pair of tracks such as aj, bk adding to a one revolution delay) thus enabling the integration at 43 of four camera frames. The drum rotation is effected by a synchronous motor system controlled by the master oscillator used for scan timing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2957871 | 1971-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1306178A true GB1306178A (en) | 1973-02-07 |
Family
ID=10293745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1306178D Expired GB1306178A (en) | 1971-06-24 | 1971-06-24 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1306178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2418594A2 (en) * | 1978-02-27 | 1979-09-21 | Cbs Inc | NOISE REDUCTION DEVICE FOR A VIDEO SIGNAL |
-
1971
- 1971-06-24 GB GB1306178D patent/GB1306178A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2418594A2 (en) * | 1978-02-27 | 1979-09-21 | Cbs Inc | NOISE REDUCTION DEVICE FOR A VIDEO SIGNAL |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |