Patent EP0617559A2 successfully refreshed from Google Patents.
EP0617559A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Video signal recording apparatus and reproducing apparatus
Assignee: Panasonic Holdings Corp
•
Filing: 1994-03-24
•
Granted: —
•
Expires: 2014-03-24
Abstract
Abstract An apparatus for recording and reproducing high efficiency coded video signal to and from a recording medium, comprises an important data generating circuit for generating at least an important data from an input video signal, a data arranging circuit for arranging the important data so as to be recorded at predetermined positions, and a recording and reproduction control circuit for controlling recording and reproducing operations. The input video signal is separated into common information to each large block and native information to small blocks of the each large block, a coding mode of each of the small blocks thus separated is judged, the input video signal is divided into a plurality of packets, data for generating a common information from the input video signal is decoded, the common information thus generated is stored at a predetermined position of a packet, each packet is sequentially recorded on a recording medium, data for generating a common information from a predetermined position of each packet is read out when reproducing a recorded signal, the common information is generated from read-out data, and plural small blocks are collected using the common information thereby to compose a large block, so that high speed reproduction can be obtained when an intra/inter-picture coded signal is recorded.
Inventors
- 👤 Masazumi Yamada
- 👤 Shinya Kadono
- 👤 Shiro Kato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 16:09
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; G; G11; G11B; G11B15/00; G11B15/18; G11B15/1808; G11B15/1875; H04N19/00; H04N19/10; H04N19/102; H04N19/103; H04N19/115; H04N19/134; H04N19/157; H04N19/16; H04N19/169; H04N19/17; H04N19/172; H04N19/176; H04N19/184; H04N19/30; H04N19/37; H04N19/42; H04N19/44; H04N19/60; H04N19/61; H04N19/85; H04N19/89; H04N21/00; H04N21/20; H04N21/23; H04N21/236; H04N21/40; H04N21/43; H04N21/434; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; G11B15/46; G11B15/467; G11B15/4671; G11B15/4673; G11B5/00; G11B5/48; G11B5/58; G11B5/584; G11B5/588; H04N19/107; H04N19/146; H04N19/152; H04N5/78; H04N5/782; H04N5/7824; H04N5/7826; H04N5/78263; H04N5/78266; H04N5/783; H04N9/82; H04N9/8205; H04N9/8227
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
66 words
Avideo signal recording apparatus which records an intra-linter-picture coded digital video signal as an input video signal on a recording medium, the video signal apparatus comprising: important data generating means for generating important data which is intra-picture coded data; data arranging means for arranging said important data collectively into predetermined areas on tracks; and data recording means for recording said important data on the recording medium.
Claim 2
Dependent Claim
66 words
Avideo signal recording apparatus which records an intra-linter-picture coded digital video signal as an input video signal on a recording medium, the video signal apparatus comprising: important data generating means for generating important data which is intra-picture coded data; data arranging means for arranging said important data collectively into predetermined areas on tracks; and data recording means for recording said important data on the recording medium.
Claim 3
Dependent Claim
50 words
The video signal recording apparatus as claimed in claim 1, wherein said important data generating means comprises: decoding means for decoding said input video signal to obtain a first video signal; and selecting means for selecting a predetermined signal from said first video signal to obtain a second video signal.
Claim 4
Dependent Claim
18 words
The video signal recording apparatus as claimed in claim 2, wherein said selecting means selects a predetermined picture.
Claim 5
Dependent Claim
23 words
The video signal recording apparatus as claimed in claim 3, wherein said selecting means selects the predetermined picture which is entirely intra-picture coded.
Claim 6
Dependent Claim
130 words
The video signal recording apparatus as claimed in claim 3, wherein said important data generating means comprises: intra-linter-picture decision means for judging whether the predetermined picture is entirely picture intra-picture coded or not; memory means for storing said input video signal corresponding to a picture commanded through memory renewal decision means to output said important data; counting means for counting a number of said important data outputted from said memory means after renewal of a content of said memory means; and said memory renewal decision means for outputting a command to said memory means so as to store said input video signal when said intra-/inter-picture decision means judges that said input video signal is intra-picture coded and yet, a counted value obtained through said counting means exceeds a predetermined value.
Claim 7
Dependent Claim
28 words
The video signal recording apparatus as claimed in claim 5, wherein said predetermined value exceeds total data amount for one picture which is stored in said memory means.
Claim 8
Dependent Claim
40 words
The video signal recording apparatus as claimed in claim 5, wherein a period of outputting said command by said memory renewal decision means is an integer multiple of a period of intra-picture coding a picture of said input video signal.
Claim 9
Dependent Claim
156 words
The video signal recording apparatus as claimed in claim 1, wherein said important data generating means comprising: intra-linter-picture decision means for judging whether a predetermined picture of said input video signal is entirely picture intra-picture coded or not; first memory means for storing temporarily said input video signal corresponding to a picture judged such as to be intra-picture coded through said intra-linter-picture decision means; second memory means for storing data for one picture which is stored or being stored on a nearest time when a command is outputted from memory renewal decision means and for outputting said important data; counting means for counting a number of said important data after renewal of a content of said second memory means; and said memory renewal decision means for outputting a command so as to transmit a content of said first memory means to said second memory means when said number of said important data exceeds a predetermined value.
Claim 10
Dependent Claim
64 words
The video signal recording apparatus as claimed in claim 8, wherein in case of being commanded through said memory renewal decision means, an address showing a top writing position of said first memory means and an address showing a top fetching position of said second memory means are switched thereby to transmit a content of said first memory means to said second memory means.
Claim 11
Dependent Claim
28 words
The video signal recording apparatus as claimed in claim 8, wherein said predetermined value exceeds total data amount for one picture which is stored in said first memory.
Claim 12
Dependent Claim
40 words
The video signal recording apparatus as claimed in claim 6, wherein a period of outputting said command by said memory renewal decision means is an integer multiple of a period of intra-picture coding a picture of said input video signal.
Claim 13
Dependent Claim
61 words
The video signal recording apparatus as claimed in claim 1, wherein said important data generating means comprises: decoding means for decoding said input video signal to obtain a first video signal; selecting means for selecting a predetermined signal from said first video signal to obtain a second video signal; and data compression means for high efficiency coding said second video signal.
Claim 14
Dependent Claim
18 words
The video signal recording apparatus as claimed in claim 12, wherein said selecting means selects a predetermined picture.
Claim 15
Dependent Claim
18 words
The video signal recording apparatus as claimed in claim 12, wherein said selecting means selects a predetermined pixel.
Claim 16
Dependent Claim
22 words
The video signal recording apparatus as claimed in claim 12, wherein said selecting means selects said predetermined picture and said predetermined pixel.
Claim 17
Dependent Claim
30 words
The video signal recording apparatus as claimed in claim 1, wherein said important data generating means has an entire or a part of a refresh data as an important data.
Claim 18
Dependent Claim
34 words
The video signal recording apparatus as claimed in claim 16, wherein said important data generating means has a low frequency component of a conversion coefficient contained in said refresh data as said important data.
Claim 19
Dependent Claim
31 words
The video signal recording apparatus as claim in claim 16, wherein said important data generating means has a refresh data forming a central area of said picture as said important data.
Claim 20
Dependent Claim
51 words
The video signal recording apparatus as claimed in claim 1, wherein said important data generating means has calculating means for calculating a recording range value where said important data can be recorded to determine an amount of said important data based on said recording range value obtained through said calculating means.
Claim 21
Dependent Claim
24 words
The video signal recording apparatus as claimed in claim 1, wherein said data recording means records said important data repeatedly at least two times.
Claim 22
Dependent Claim
37 words
The video signal recording apparatus as claimed in claim 1, wherein said data recording means records said important data in a reproducible area of a magnetic tape when high speed reproducing at a predetermined speed in VCR.
Claim 23
Dependent Claim
27 words
The video signal recording apparatus as claimed in claim 21, wherein said reproducible area of said magnetic tape is arranged at same positions of all tracks thereof.
Claim 24
Dependent Claim
80 words
A video signal recording and reproducing apparatus which has an intra-linter-picture coded digital video signal as an input video signal and has a function for controlling reproduction of a recorded video signal of said input video signal comprising: important data generating means for generating important data which is intra-picture coded data; data arranging means for arranging said important data collecting into predetermined tracks; recording means for recording said important data; and reproduction control means for reproducing said important data only.
Claim 25
Dependent Claim
80 words
A video signal recording and reproducing apparatus which has an intra-linter-picture coded digital video signal as an input video signal and has a function for controlling reproduction of a recorded video signal of said input video signal comprising: important data generating means for generating important data which is intra-picture coded data; data arranging means for arranging said important data collecting into predetermined tracks; recording means for recording said important data; and reproduction control means for reproducing said important data only.
Claim 26
Dependent Claim
62 words
The video signal recording and reproducing apparatus as claimed in claim 23, wherein said important data generating means comprises; decoding means for decoding said input video signal to obtain a first video signal; selecting means for selecting a predetermined signal form said first signal to obtain a second video signal; and data compression means for high efficiency coding said second video signal.
Claim 27
Dependent Claim
20 words
The video signal recording and reproducing apparatus as claimed in claim 24, wherein said selecting means selects a predetermined picture.
Claim 28
Dependent Claim
20 words
The video signal recording and reproducing apparatus as claimed in claim 24, wherein said selecting means selects a predetermined pixel.
Claim 29
Dependent Claim
24 words
The video signal recording and reproducing apparatus as claimed in claim 24, wherein said selecting means selects said predetermined picture and said predetermined pixel.
Claim 30
Dependent Claim
31 words
The video signal recording and reproducing apparatus as claimed in claim 23, wherein said important data generating means has an entire or a part of refresh data as said important data.
Claim 31
Dependent Claim
36 words
The video signal recording and reproducing apparatus as claimed in claim 28, wherein said important data generating means has a low frequency component of a conversion coefficient contained in said refresh data as said important data.
Claim 32
Dependent Claim
33 words
The video signal recording and reproducing apparatus as claimed in claim 28, wherein said important data generating means has a refresh data forming a central area of a picture as said important data.
Claim 33
Dependent Claim
54 words
The video signal recording and reproducing apparatus as claimed in claim 23, wherein said important data generating means has a calculating means for calculating a recording range value where said important data can be recorded to determine an amount of said important data based on said recording range value obtained through said calculating means.
Claim 34
Dependent Claim
65 words
The video signal recording and reproducing apparatus as claimed in claim 23, wherein said data arranging means arranges said important data and a normal data in such a manner that continuous k1 tracks (k1 is a positive integer) in which said important data is allocated and continuous k2 tracks (k2 is a positive integer) in which said normal data is allocated are alternately repeatedly recorded.
Claim 35
Dependent Claim
53 words
The video signal recording and reproducing apparatus as claimed in claim 32, wherein said continuous k1 tracks where said important data is recorded become k1 + k2 = m and k1 = 1 if presupposed that reproduction is made at a speed of±m multiple (m is a positive integer) of a normal speed.
Claim 36
Dependent Claim
47 words
The video signal recording and reproducing apparatus as claimed in claim 33, wherein said data arranging means arranges said normal data so that said normal data is recorded at a period of n (n is a positive integer) tracks and n is an integer multiple of m.
Claim 37
Dependent Claim
42 words
The video signal recording and reproducing apparatus as claimed in claim 32, wherein said k1 tracks where said important data is recorded become k1 = 2 if presupposed that reproduction is made at a speed of ±m/2 multiple of a normal speed.
Claim 38
Dependent Claim
20 words
The video signal recording and reproducing apparatus as claimed in claim 35, wherein n is an integer multiple of m.
Claim 39
Dependent Claim
58 words
The video signal recording and reproducing apparatus as claimed in claim 32, wherein said data arranging means arranges said important data and said normal data so that said normal data is recorded at a period of n (n is positive integer) tracks, and said k1 tracks where said important data is recorded become k1 + k2 = n.
Claim 40
Dependent Claim
44 words
The video signal recording and reproducing apparatus as claimed in claim 23, wherein said reproduction control means controls a movable head so as to reproduce specific tracks when a recording medium is run at a predetermined speed higher than a speed thereof when recording.
Claim 41
Dependent Claim
55 words
The video signal recording and reproducing apparatus as claimed in claim 23, wherein said reproduction control means controls a recording medium so as to be run at a normal speed when any tracks where said important data is recorded is scanned and at a higher speed than the normal speed when remaining tracks is scanned.
Claim 42
Dependent Claim
43 words
The video signal recording and reproducing apparatus as claimed in claim 23, wherein said reproduction control means controls a recording medium and a cylinder so as to achieve reproduction at a speed of a ±m multiple of a speed in the normal reproduction.
Claim 43
Dependent Claim
208 words
A video signal recording apparatus comprising: packeting means which divides an input video signal into a plurality of packets, said input video signal being a digital video signal which is intra-linter-picture adaptively coded for each of small blocks, a plurality of said small blocks being obtained by dividing each of large blocks, and a plurality of said large blocks being obtained by dividing a picture; coded signal separating means for separating said input video signal into a large block common information which is a common information to respective small blocks of each of said large blocks and a small block native information which is a native information for said respective small blocks; coding mode decision means for judging whether said small block native information is intra-picture coded or inter-picture coded; common information generating data decoding means for decoding a common information generating data for generating a common information necessary for composing a large block by collecting a plurality of said small blocks from said input video signal; common information generating data recording means for recording said common information generating data into a first predetermined position of a packet containing a small block thereof; and packet recording means for recording each of said packet sequentially on a recording medium.
Claim 44
Dependent Claim
208 words
A video signal recording apparatus comprising: packeting means which divides an input video signal into a plurality of packets, said input video signal being a digital video signal which is intra-linter-picture adaptively coded for each of small blocks, a plurality of said small blocks being obtained by dividing each of large blocks, and a plurality of said large blocks being obtained by dividing a picture; coded signal separating means for separating said input video signal into a large block common information which is a common information to respective small blocks of each of said large blocks and a small block native information which is a native information for said respective small blocks; coding mode decision means for judging whether said small block native information is intra-picture coded or inter-picture coded; common information generating data decoding means for decoding a common information generating data for generating a common information necessary for composing a large block by collecting a plurality of said small blocks from said input video signal; common information generating data recording means for recording said common information generating data into a first predetermined position of a packet containing a small block thereof; and packet recording means for recording each of said packet sequentially on a recording medium.
Claim 45
Dependent Claim
109 words
The video signal recording apparatus as claimed in claim 41 further comprising: block position calculating means for calculating a block position information showing a position on said picture corresponding to said small block native information of a predetermined coding mode; data beginning position detecting means for detecting a data beginning position of said small block native information of said predetermined coding mode of each of said packet; and position information recording means for recording said data beginning position and said block position information in each of said packet of said native information of said small block into a second predetermined position of said packet containing said small block thereof.
Claim 46
Dependent Claim
58 words
The video signal recording apparatus as claimed in claim 41 further comprising: motion vector decoding means for decoding a motion vector information of an inter-picture coded small block from said input video signal; and motion vector information recording means for recording said motion vector information into a third predetermined position of said packet containing said small block thereof.
Claim 47
Dependent Claim
62 words
The video signal recording apparatus as claimed in claim 41 further comprising: direct current component decoding means for decoding a direct current component information of an intra-picture coded small block from said input video signal; and direct current component information recording means for recording said direct current component information into a fourth predetermined position of said packet containing said small block thereof.
Claim 48
Dependent Claim
81 words
A video signal reproducing apparatus comprising: common information generating data fetching means for fetching a common information generating data from a first predetermined position of each packet of each reproduced signal reproduced from a recording medium; common information generating means for generating a common information in a large block from said common information generating data; and large block composing means for collecting a plurality of small blocks to compose a large block by using a common information in said large block.
Claim 49
Dependent Claim
81 words
A video signal reproducing apparatus comprising: common information generating data fetching means for fetching a common information generating data from a first predetermined position of each packet of each reproduced signal reproduced from a recording medium; common information generating means for generating a common information in a large block from said common information generating data; and large block composing means for collecting a plurality of small blocks to compose a large block by using a common information in said large block.
Claim 50
Dependent Claim
46 words
The video signal reproducing apparatus as claimed in claim 45 further comprising position information fetching means forfetching a data beginning position and a block position information of small blocks of a predetermined coding mode in a packet from a second predetermined position of said each packet.
Claim 51
Dependent Claim
38 words
The video signal reproducing apparatus as claimed in claim 45 further comprising motion vector information fetching means for fetching a motion vector information of an inter-picture coded small block from a third predetermined position of said each packet.
Claim 52
Dependent Claim
40 words
The video signal reproducing apparatus as claimed in claim 45 further comprising direct current component information fetching means for fetching a direct current component information of an intra-picture coded small block from a fourth predetermined position of said each packet.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.