Patent EP0353758A2 successfully refreshed from Google Patents.
EP0353758A2
Expired / Lapsed
EP
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Video data recording apparatus for recording search data
Assignee: Canon Inc
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Filing: 1989-08-03
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Granted: —
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Expires: 2009-08-03
Abstract
Abstract A video data recording apparatus which records video data by forming a number of tracks [T1,T2,...] parallel with each other on a recording medium, wherein a period at which each of the tracks is formed is not one integral-number-th of a period of time for which a field of video signal is recorded, and wherein a time code is recorded at a constant position of each of the tracks.
Inventors
- 👤 Koji Takahashi
- 👤 Kenichi Nagasawa
- 👤 Motokazu Kashida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 22:22
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9265; H04N5/9267; H04N5/9268; G; G11; G11B; G11B27/00; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3036; G11B27/3063; G11B27/3081; G11B27/32; G11B27/327; G11B27/328; H04N5/78; H04N5/782; H04N5/783; H04N5/9201; H04N5/9205; H04N5/9261; H04N5/9262; G11B15/00; G11B15/18; G11B15/1808; G11B15/1875; G11B20/00; G11B20/10; G11B20/12; G11B20/1201; G11B20/1207; G11B20/1208; G11B2220/00; G11B2220/90; H04N5/7824; H04N5/7826; H04N5/78263; H04N5/78266; H04N5/93; H04N5/94; H04N5/945; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N9/8205; H04N9/8227
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
143 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data, said search data including a time code; head means for recording said main video data and said search data by forming a number of tracks on the recording medium, a period at which each of said tracks formed by said head means being not one integral-number-th of a period of time for which a field of said main video data is formed; and timing control means for supplying said search data to said head means at a timing at which said search data is recorded at a constant position of each of said tracks.
Claim 2
Dependent Claim
143 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data, said search data including a time code; head means for recording said main video data and said search data by forming a number of tracks on the recording medium, a period at which each of said tracks formed by said head means being not one integral-number-th of a period of time for which a field of said main video data is formed; and timing control means for supplying said search data to said head means at a timing at which said search data is recorded at a constant position of each of said tracks.
Claim 3
Dependent Claim
33 words
An apparatus according to claim 1, wherein said timing control means outputs selectively one of said main video data formed by said first means and said search data formed by said second means.
Claim 4
Dependent Claim
63 words
An apparatus according to claim 1, further comprising input means for inputting a digital video signal, wherein said first means includes means for forming said main video data from said digital video signal inputted by said input means, and wherein said second means includes means for forming search video data from said digital video signal, said search data including said search video data.
Claim 5
Dependent Claim
31 words
An apparatus according to claim 3, wherein said first means includes first encoding means for forming said main video data by compressing the number of data in said digital video signal.
Claim 6
Dependent Claim
43 words
An apparatus according to claim 4, wherein said second means includes second encoding means for forming said search video data by compressing the number of data in said digital video signal at a higher compression rate than that in said first encoding means.
Claim 7
Dependent Claim
25 words
An apparatus according to claim 4, wherein said first encoding means includes variable-length encoding means for varying the amount of said video data per field.
Claim 8
Dependent Claim
22 words
An apparatus according to claim 1, wherein said search data further includes data indicative of a program number of said video data.
Claim 9
Dependent Claim
14 words
An apparatus according to claim 1, wherein said search data further includes dating data.
Claim 10
Dependent Claim
44 words
An apparatus according to claim 1, wherein said head means includes a plurality of rotary heads, a period of rotation of said rotary heads being not one integral-number-th of a period of time for which a field of said main video data is formed.
Claim 11
Dependent Claim
149 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data, said search data including video data related to said main video data; head means for recording said main video data and said search data by forming a number of tracks on the recording medium, a period at which each of said tracks is formed by said head means being not one integral-number-th of a period of time for which a field of said main video data is formed; and timing control means for supplying said search data to said head means at a tining at which said search data is recorded at a constant position of each of said tracks.
Claim 12
Dependent Claim
149 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data, said search data including video data related to said main video data; head means for recording said main video data and said search data by forming a number of tracks on the recording medium, a period at which each of said tracks is formed by said head means being not one integral-number-th of a period of time for which a field of said main video data is formed; and timing control means for supplying said search data to said head means at a tining at which said search data is recorded at a constant position of each of said tracks.
Claim 13
Dependent Claim
62 words
An apparatus according to claim 10, further comprising input means for inputting a digital video signal, wherein said first means includes means for forming said main video data from said digital video signal inputted by said input means, and wherein said second means includes means for forming search video data from said video signal, said search data including said search video data.
Claim 14
Dependent Claim
31 words
An apparatus according to claim 11, wherein said second means includes first encoding means for forming said search video data by compressing the number of data in said digital video signal.
Claim 15
Dependent Claim
43 words
An apparatus according to claim 12, wherein said first means includes second encoding means for forming said main video data by compressing the number of data in said digital video signal at a higher compression rate than that in said first encoding means.
Claim 16
Dependent Claim
152 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data, said search data including data indicative of a program number of said main video data; head means for recording said main video data and said search data by forming a number of tracks on the recording medium, a period at which each of said tracks is formed by said head means being not one integral-number-th of a period of time for which a field of said main video data is formed; and timing control means for supplying said search data to said head means at a timing at which said search data is recorded at a constant position of each of said tracks.
Claim 17
Dependent Claim
152 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data, said search data including data indicative of a program number of said main video data; head means for recording said main video data and said search data by forming a number of tracks on the recording medium, a period at which each of said tracks is formed by said head means being not one integral-number-th of a period of time for which a field of said main video data is formed; and timing control means for supplying said search data to said head means at a timing at which said search data is recorded at a constant position of each of said tracks.
Claim 18
Dependent Claim
187 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data; transporting means for transporting the recording medium; recording means for recording said main video data and said search data by forming a number of tracks on the recording medium being transported by said transporting means at a first speed, said recording means including at least one head, a period at which each of said tracks is formed by said head is not one integral-number-th of a period of time for which a field of said main video data is formed; timing control means for supplying said search data to said head means at a timing at which said search data is recorded at a constant position of each of said tracks; and reproducing means for reproducing said search data from the recording medium being transported by said transporting means at a second speed higher than said first speed.
Claim 19
Dependent Claim
187 words
A video data recording apparatus for recording video data by forming a number of tracks on a recording medium, comprising; first means for forming main video data as main data to be recorded; second means for forming search data to be used for searching for said main video data; transporting means for transporting the recording medium; recording means for recording said main video data and said search data by forming a number of tracks on the recording medium being transported by said transporting means at a first speed, said recording means including at least one head, a period at which each of said tracks is formed by said head is not one integral-number-th of a period of time for which a field of said main video data is formed; timing control means for supplying said search data to said head means at a timing at which said search data is recorded at a constant position of each of said tracks; and reproducing means for reproducing said search data from the recording medium being transported by said transporting means at a second speed higher than said first speed.
Claim 20
Dependent Claim
32 words
An apparatus according to claim 15, wherein said reproducing means includes said head, and wherein said apparatus further comprises means for restoring said main video data from signals reproduced by said head.
Claim 21
Dependent Claim
23 words
An apparatus according to claim 16, wherein said reproducing means includes means for separating said search data from signals reproduced by said head.
Claim 22
Dependent Claim
63 words
An apparatus according to claim 15, further comprising input means for inputting a digital video signal, wherein said first means includes means for forming said main video data from said digital video signal inputted by said input means, and wherein said second means includes means for forming search video data from said digital video signal, said search data including said search video data.
Claim 23
Dependent Claim
24 words
An apparatus according to claim 18, wherein said reproducing means includes means for restoring said search video data by using said reproduced search data.
Claim 24
Dependent Claim
35 words
An apparatus according to claim 19, wherein said reproducing means can reproduce said main video data and includes means for outputting selectively one of said restored search video data and said reproduced main video data.
Claim 25
Dependent Claim
14 words
An apparatus according to claim 15, wherein said search data includes a time code.
Claim 26
Dependent Claim
52 words
An apparatus according to claim 21, wherein said reproducing means can reproduce said main video data and said time code, and includes means for generating a character signal related to said reproduced time code and means for forming composite video data by combining said reproduced main video data and said character signal.
Claim 27
Dependent Claim
22 words
An apparatus according to claim 21, wherein said search data further includes data indicative of a program number of said video data.
References Cited (Backward Citations)
No citation records indexed.
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