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US3571502A
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US
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Tv bandwidth reduction system with reduced field rate
Assignee: Raytheon Co
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Filing: 1968-06-07
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Granted: 1971-03-16
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Expires: 1988-06-07
Abstract
Abstract A video tape recorder system including an encoder for sampling video information in a repetitive pattern of evenly spaced information elements; a multichannel recorder coupled to record the encoded information; and a playback processor for playing back each encoded information element four times-once as a real time information element, and the other three times positioned between the real time information elements as artificial information elements-preferably from the real-time line and the subsequent and preceding interlaced lines of leading and trailing fields, respectively, to fill in the otherwise blank space between spaced real time information elements in the real time field.
Inventors
- 👤 Russell R Law
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:19
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N11/00; H04N11/02; H04N7/00; H04N7/12; H04N7/122; H04N7/125
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
196 words
In a video system for receiving a repetitive series of fields of spaced and complementary video elements in which the video elements of each subsequent field retrograde by a portion of a time period, a playback processor comprising: first means for reproducing video elements from video lines of a first field of the series of fields at first times in the time periods; second means for reproducing video elements from adjacent video lines of a second sequential field at second times and third times each respectively at one-sixth of and four-sixths of the time period between spaced sequential video elements being played back by said first means; third means for reproducing video elements from the same video line of a third sequential field as the video being reproduced from the first field at fourth times three-sixths of the time period between spaced sequential video elements being played back by said first means; and fourth means for reproducing video elements from adjacent video lines of a fourth sequential field at fiFth times and sixth times each respectively four-sixths of and five-sixths of the time period between spaced sequential video elements being played back by said first means.
Claim 2
Dependent Claim
196 words
In a video system for receiving a repetitive series of fields of spaced and complementary video elements in which the video elements of each subsequent field retrograde by a portion of a time period, a playback processor comprising: first means for reproducing video elements from video lines of a first field of the series of fields at first times in the time periods; second means for reproducing video elements from adjacent video lines of a second sequential field at second times and third times each respectively at one-sixth of and four-sixths of the time period between spaced sequential video elements being played back by said first means; third means for reproducing video elements from the same video line of a third sequential field as the video being reproduced from the first field at fourth times three-sixths of the time period between spaced sequential video elements being played back by said first means; and fourth means for reproducing video elements from adjacent video lines of a fourth sequential field at fiFth times and sixth times each respectively four-sixths of and five-sixths of the time period between spaced sequential video elements being played back by said first means.
Claim 3
Dependent Claim
39 words
The playback processor of claim 1 in which said second means and said fourth means reproduce video elements from the adjacent video line above and the adjacent video line below the video line being reproduced by said first means.
Claim 4
Dependent Claim
65 words
The playback processor of claim 1 in which pickup means of said first means and said third means are spaced from one another by multiples of one field and said pickup means of said second means and said fourth means are spaced from said pickups of said first means and said third means by multiples of one field plus increments of one horizontal video line.
Claim 5
Dependent Claim
79 words
The playback processor of claim 1 in which said first means, said second means, and said third means, and said fourth means each include a pickup means, each pickup means being spaced from the other for playing back video elements from a first field, a second field, a third field, and a fourth field, respectively, and delay means selectively coupled to said pickup means for selectively delaying the played back video elements to be reproduced at the selected times.
Claim 6
Dependent Claim
14 words
The playback processor of claim 4 in which said pickup means are equally spaced.
Claim 7
Dependent Claim
69 words
The playback processor of claim 4 in which said pickup means of said first means and said third mean means are spaced from one another by integral multiples of one field and said pickup means of said second means and said fourth means are spaced from said pickups of said first means and said third means by integral multiples of one field and increments of one horizontal video line.
Claim 8
Dependent Claim
40 words
The playback processor of claim 4 in which said first means, said second means, said third means, and said fourth means include a plurality of spaced apart magnetic pickups operable for playing back the video elements from a magnetic tape.
Claim 9
Dependent Claim
267 words
In a video system for receiving a series of fields of spaced and complementary video elements in which the video elements of each subsequent field retrograde by one-sixth of a time period, a playback processor comprising: first means for reproducing at select time periods video elements from video lines of a first field of the series of fields; second means for reproducing video elements from an adjacent video line from other fields of the series of fields spaced in a first direction from the field being reproduced by said first means the elements of each subsequent field direct being played back at second times and fifth times, each of the times being respectively spaced one-sixth of and four-sixths of the time period between spaced sequential video elements being played back by said first means; third means for reproducing video elements from an adjacent video line from other fields of the series of fields spaced in a second direction from the field being played back by said first means the elements of each field being played back at third times and sixth times, each of the times being respectively spaced one-sixth of and four-sixths of the time period between spaced sequential video elements being played by said first means; and fourth means for reproducing video elements from the same video line as the line being reproduced by said first means from fields spaced from the first field in a predetermined direction, the video elements being played back at fourth times spaced three-sixths of the time period between spaced sequential video elements being played back by said first means.
Claim 10
Dependent Claim
267 words
In a video system for receiving a series of fields of spaced and complementary video elements in which the video elements of each subsequent field retrograde by one-sixth of a time period, a playback processor comprising: first means for reproducing at select time periods video elements from video lines of a first field of the series of fields; second means for reproducing video elements from an adjacent video line from other fields of the series of fields spaced in a first direction from the field being reproduced by said first means the elements of each subsequent field direct being played back at second times and fifth times, each of the times being respectively spaced one-sixth of and four-sixths of the time period between spaced sequential video elements being played back by said first means; third means for reproducing video elements from an adjacent video line from other fields of the series of fields spaced in a second direction from the field being played back by said first means the elements of each field being played back at third times and sixth times, each of the times being respectively spaced one-sixth of and four-sixths of the time period between spaced sequential video elements being played by said first means; and fourth means for reproducing video elements from the same video line as the line being reproduced by said first means from fields spaced from the first field in a predetermined direction, the video elements being played back at fourth times spaced three-sixths of the time period between spaced sequential video elements being played back by said first means.
Claim 11
Dependent Claim
39 words
The playback processor of claim 8 in which said second means and said third means reproduce video elements from the adjacent video line above and the adjacent video line below the video line being reproduced by said first means.
Claim 12
Dependent Claim
51 words
The playback processor of claim 9 in which said second means reproduces video elements from the adjacent video line above the video line being reproduced by said first means and said third means reproduces video elements from the adjacent video lines below the video line being reproduced by said first means.
Claim 13
Dependent Claim
35 words
The playback processor of claim 9 in which said first means, said second means, said third means, and said fourth means include a plurality of spaced apart magnetic pickups for playing back the video elements.
Claim 14
Dependent Claim
41 words
The playback processor of claim 11 in which said first means, said second means, said third means, and said fourth means include delay means coupled to said pickups for selectively delaying the played back video elements to occur at selected times.
Claim 15
Dependent Claim
19 words
The playback processor of claim 11 in which said pickups are evenly spaced by increments of one video field.
Claim 16
Dependent Claim
22 words
The playback processor of claim 13 in which said delay means delay the video elements by increments of one horizontal video line.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |