GB910868A - Improvements relating to methods of magnetically recording and reproducing signals - Google Patents
Improvements relating to methods of magnetically recording and reproducing signalsInfo
- Publication number
- GB910868A GB910868A GB3186161A GB3186161A GB910868A GB 910868 A GB910868 A GB 910868A GB 3186161 A GB3186161 A GB 3186161A GB 3186161 A GB3186161 A GB 3186161A GB 910868 A GB910868 A GB 910868A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heads
- tracks
- video
- methods
- sept
- 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
- H04N5/78—Television signal recording using magnetic recording
- H04N5/782—Television signal recording using magnetic recording on tape
- H04N5/7824—Television signal recording using magnetic recording on tape with rotating magnetic heads
- H04N5/7826—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
910,868. Magnetic recording; television. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 5, 1961 [Sept. 8, 1960], No. 31861/61. Class 40 (2). A television signal is recorded as to video by the drum-mounted heads 4-7 and as to audio and synchronizing signals by the stationary heads 12, 13 so that the respective tracks 21, 19, 20 overlap. Wide tracks produced by heads 12, 13 are only partially affected by the subsequent video tracks, leaving an ample margin of signal on playback by heads insensitive to video frequencies while the frequencymodulated video signals do not fall below 1 mc/s. so that interference by tracks 19, 20 is readily removed by filtering. The advantage claimed is the use of narrower tape for the same information content.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL255725 | 1960-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB910868A true GB910868A (en) | 1962-11-21 |
Family
ID=19752554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3186161A Expired GB910868A (en) | 1960-09-08 | 1961-09-05 | Improvements relating to methods of magnetically recording and reproducing signals |
Country Status (6)
| Country | Link |
|---|---|
| CH (1) | CH411031A (en) |
| DE (1) | DE1232188B (en) |
| DK (1) | DK103569C (en) |
| ES (1) | ES270273A1 (en) |
| GB (1) | GB910868A (en) |
| NL (2) | NL132809C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3947875A (en) * | 1974-08-06 | 1976-03-30 | International Business Machines Corporation | Magnetic recorder test article and methods |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT174220B (en) * | 1951-09-18 | 1953-03-10 | Alfred Dipl Ing Dr Tec Schuetz | Method and device for recording two or more magnetograms using a common, flat, in particular band-shaped carrier |
| GB798929A (en) * | 1955-09-16 | 1958-07-30 | Ampex | Improvements in and relating to broad band magnetic tape recording and/or reproducing apparatus |
-
0
- NL NL255725D patent/NL255725A/xx unknown
- NL NL132809D patent/NL132809C/xx active
-
1961
- 1961-09-05 DE DE1961N0020508 patent/DE1232188B/en active Pending
- 1961-09-05 DK DK352361A patent/DK103569C/en active
- 1961-09-05 GB GB3186161A patent/GB910868A/en not_active Expired
- 1961-09-05 CH CH1028261A patent/CH411031A/en unknown
- 1961-09-06 ES ES270273A patent/ES270273A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1232188B (en) | 1967-01-12 |
| CH411031A (en) | 1966-04-15 |
| NL255725A (en) | |
| NL132809C (en) | |
| DK103569C (en) | 1966-01-24 |
| ES270273A1 (en) | 1962-05-01 |
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