Method for controlling a dynamic tracking head of a digital video tape recorder

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5027235
SERIAL NO

07381287

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a method for controlling a dynamic tracking head so as to reproduce a digital video signal from a field video signal recorded on a plurality of segmented video tracks formed on a video tape, the rotation speed of a drum carrying the heads is increased to cause such heads to precisely trace the plurality of video tracks forming one field video signal in a reduced time so as to provide enough time for the video heads to jump from the end portion of the current video tracks to the beginning portion of the next video tracks.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SONY CORPORATIONTOKYO, JP26051

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furuyama, Takenori Kanagawa, JP 1 34

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Ampex Corporation (1)
* 4933784 Automatic head position tracking system for video signals recorded in a segmented format 16 1988
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SANYO ELECTRIC CO., LTD. (1)
* 5136391 Digital video tape recorder capable of accurate image reproduction during high speed tape motion 104 1989
 
Other [Check patent profile for assignment information] (1)
* 2006/0182,176 Methods and apparatus for decoding and displaying different resolution video signals 1 2006
 
Hitachi of America, Ltd. (1)
* 6100932 Methods and apparatus for efficiently storing reference frame data and using the stored data to perform motion compensated predictions 11 1998
 
HITACHI CONSUMER ELECTRONICS CO., LTD. (1)
* 5583650 Digital recording and playback device error correction methods and apparatus for use with trick play data 23 1995
 
Ampex Corporation (1)
* 5341251 Data recording system having longitudinal tracks with recordable segments 14 1992
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 5778138 Magnetic recording and reproduction apparatus for preventing fixed pattern noise from appearing in a reproduced image when reproducing at high speed 1 1996
 
MEDIA ARTS & IMAGES CORPORATION (1)
* 2002/0013,948 Video data management, transmission, and control system and method emloying distributed video segments microcasting 65 2001
 
HITACHI, LTD. (6)
* 5377051 Digital video recorder compatible receiver with trick play image enhancement 495 1993
* 5623344 Digital video recording device with trick play capability 29 1994
* 5576902 Method and apparatus directed to processing trick play video data to compensate for intentionally omitted data 72 1994
* 5729648 Method and apparatus for selecting encoded video data for use during video recorder trick play operation 49 1995
* 5687275 Trick play data indentification methods and apparatus for use with digital video recording and playback devices 60 1995
* 5729649 Methods and apparatus for recording data on a digital storage medium in a manner that facilitates the reading back of data during trick play operation 43 1996
 
HITACHI AMERICA, LTD. (23)
* 5444575 Method for recording digital data using a set of heads including a pair of co-located heads to record data at a rate lower than the full recording rate possible using the set of heads 19 1994
* 5805762 Video recording device compatible transmitter 172 1994
* 5933567 Method and apparatus for controlling the position of the heads of a digital video tape recorder during trick play operation and for recording digital data on a tape 16 1994
* 5778143 Method and apparatus for the selection of data for use in VTR trick playback operation in a system using progressive picture refresh 33 1994
* 5717816 Method and apparatus for the selection of data for use in VTR trick playback operation in a system using intra-coded video frames 46 1994
* 5887115 Method and apparatus for implementing a video tape recorder for recording digital video signals having either a fixed or variable data transmission rate 10 1994
* 5493456 Method and apparatus for increasing the recording time of a digital video tape recorder 26 1995
* 5668918 Method for recording digital data using a series of adjacent heads of alternating azimuths located on a headwheel to record data at a rate that is less than the full recording rate possible using the heads 7 1996
* 5726711 Intra-coded video frame data processing methods and apparatus 58 1996
* 5673358 Method for generating a reduced rate digital bitstream by selecting data as a function of the position within an image to which the data corresponds 10 1996
* 6025878 Method and apparatus for decoding both high and standard definition video signals using a single video decoder 41 1997
* 6023553 Method and apparatus for achieving video data reduction through the use of re-encoding 74 1997
6262770 Methods and apparatus for decoding high and standard definition images and for decoding digital data representing images at less than the image's full resolution 7 1998
* 6122321 Methods and apparatus for reducing the complexity of inverse quantization operations 18 1998
6385248 Methods and apparatus for processing luminance and chrominance image data 39 1998
* 6148032 Methods and apparatus for reducing the cost of video decoders 7 1998
* 6141486 Methods and apparatus for recording digital data including sync block and track number information for use during trick play operation 40 1999
* 6061402 Methods and apparatus for efficiently decoding bi-directionally coded image data 61 1999
* 6167089 Reduced cost methods and apparatus for decoding bi-directionally coded image data 6 2000
6249547 Methods and apparatus for decoding high definition and standard definition digital video images using a single decoder apparatus 11 2000
6563876 Methods and apparatus for decoding and displaying high definition and standard definition digital video images at standard definition resolution 17 2001
7173970 Methods and apparatus for decoding and displaying multiple digital images in parallel 4 2002
7295611 Methods and apparatus for decoding and displaying different resolution video signals 2 2006
* Cited By Examiner