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US 6,028,726 AGranted
Digital data recording/reproducing apparatus and method with means for adding arrival time to a data packet
AssigneeSony Corporation
InventorNaofumi Yanagihara
Life of this patent
Estimating the term…
Abstract
A digital VTR is capable of reproducing a recorded picture image in a normal mode and a variable speed reproduction mode. During normal speed reproduction, the digital VTR reproduces a recorded picture from data that has been recorded in a normal play area of a recording medium. When the digital VTR is in a variable low speed reproduction mode, it reproduces a picture from data recorded in a first trick play area. When the digital VTR is in a variable high speed reproduction mode, it reproduces a picture from data recorded in a second trick play area. The first and second trick play areas are located at respective tracks that correspond to different azimuths.
Claims26
A digital data recording apparatus for recording a data packet onto a tape, comprising:
- a reference clock;
- time generating means, in communication with said reference clock, for generating on the basis of said reference clock a time when said data packet arrives at said apparatus;
- means in communication with said time generating means for adding the arrival time of said data packet to said data packet;
- classifying means for classifying each of a plurality of tracks on the tape into a plurality of normal play areas and a plurality of trick play areas, each of said trick play areas being located at positions of each of said tracks corresponding to locations of each of said tracks that are traced by a head during a variable speed reproducing operation;
- and
- recording means in communication with said adding means for recording said data packet into said normal play areas and for recording into said trick play areas only a portion of said data packet, said portion of said data packet recorded into said trick play areas including the arrival time of said data packet and being reproduced during said variable speed reproducing operation.
3 more elements
A digital data recording method of recording a data packet onto a tape, comprising the steps of:
- generating, on the basis of a reference clock, a time when said data packet arrives at a digital data recording apparatus;
- adding the arrival time of said data packet to said data packet;
- classifying each of a plurality of tracks on the tape into a plurality of normal play areas and a plurality of trick play areas, said trick play areas being located at positions of each of said tracks corresponding to track locations that are traced by a head during a variable speed reproducing operation;
- and
- recording said data packet into said normal play area and recording into said trick play areas only a portion of said data packet, said portion of said data packet recorded into said trick play areas including the arrival time of said data packet and being reproduced during said variable speed reproduction operation.
2 more elements
A digital data recording apparatus for recording sync blocks onto a tape having a plurality of tracks, comprising:
- means for receiving a plurality of data packets;
- classifying means for classifying each of said tracks on the tape into a plurality of normal play areas and a plurality of trick play areas, each of said trick play areas being located at positions on each of said tracks corresponding to locations that are traced by a head during a variable speed reproducing operation;
- sync block formatting means for arranging n data packets into m sync blocks;
- and
- recording means for recording said sync blocks into said normal play areas and for recording selected ones of said sync blocks into said trick play areas, said selected sync blocks recorded in said trick play areas being reproduced during said variable speed reproducing operation.
2 more elements
A digital data recording apparatus for recording data packets onto a tape having a plurality of tracks, comprising:
- means for receiving a plurality of data packets;
- classifying means for classifying each of said tracks on the tape into a plurality of normal play areas and a plurality of trick play areas, each of said trick play areas on alternating tracks being located at positions corresponding to locations of said respective tracks that are traced by a first head during a first variable speed reproducing operation, each of said trick play areas on the other alternating tracks being located at positions corresponding to locations of said respective tracks that are traced by a second head during a second variable speed reproducing operation, said locations on said alternating tracks being different from said locations of the other alternating tracks;
- and
- recording means for recording said data packets into said normal play areas and for recording into said trick play areas only a portion of said data packets, said portion of said data packets recorded in said trick play areas of said alternating tracks being reproduced during said first variable speed reproducing operation, and said portion of said data packets recorded in said trick play areas of the other alternating tracks being reproduced during said second variable speed reproducing operation.
1 more element
A digital data recording method of recording sync blocks onto a tape having a plurality of tracks, comprising the steps of:
- receiving a plurality of data packets;
- classifying each of said tracks on the tape into a plurality of normal play areas and a plurality of trick play areas, each of said trick play areas being located at positions on each of said tracks corresponding to locations that are traced by a head during a variable speed reproducing operation;
- arranging n data packets into m sync blocks;
- and
- recording said sync blocks into said normal play areas and recording selected ones of said sync blocks into said trick play areas, said selected sync blocks recorded in said trick play areas being reproduced during said variable speed reproducing operation.
2 more elements
A digital data recording method of recording data packets onto a tape having a plurality of tracks, comprising the steps of:
- receiving a plurality of data packets;
- classifying each of said tracks on the tape into a plurality of normal play areas and a plurality of trick play areas, each of said trick play areas on alternating tracks being located at positions corresponding to locations of said respective tracks that are traced by a first head during a first variable speed reproducing operation, each of said trick play areas on the other alternating tracks being located at positions corresponding to locations of said respective tracks that are traced by a second head during a second variable speed reproducing operation, said locations on said alternating tracks being different from said locations of the other alternating tracks;
- and
- recording said data packets into said normal play areas and recording into said trick play areas only a portion of said data packets, said portion of said data packets recorded in said trick play areas of said alternating tracks being reproduced during said first variable speed reproducing operation, and said portion of said data packets recorded in said trick play areas of the other alternating tracks being reproduced during said second variable speed reproducing operation.
1 more element
Dependencies are inferred from the claim text.