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5455683 |
Method for preventing error speading while recording compressed image data
A method of recording a sequence of video blocks, each comprising a plurality of bytes, each representing compressed image data code, includes the step of recording a video block identification...
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5448372 |
Storage and retrieval of digitized photographic images
A storage and retrieval mechanism for a digital image processing system employs a reduced capacity frame store in the playback device. A plurality of photographic images captured on a photographic...
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5446715 |
Circuit for detecting a synchronous signal included in an information signal
An information reproducing apparatus according to the present invention is capable of overcoming a problem of impossibility in data reproduction which takes place due to a deletion of a SYNC signal...
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5440401 |
Image database incorporating low resolution index image data
A mechanism for controlling the manner in which digitized image data files are stored on a digital data storage medium, such as a compact disc, in an opto-electronic image digitizing system in...
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5428456 |
Method and apparatus for adaptively reducing interline flicker of TV-displayed image
An image analysis and flicker filter control mechanism is incorporated into the image processing software of a photofinishing workstation for the purpose of analyzing the high frequency content of...
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5418620 |
Video signals recorder and player including interframe calculating means
When a standard TV signal of digital format is a first video signal and another digitized TV signal having a bandwidth wider than that of the first video signal is a second video signal, every two...
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5416644 |
Device for processing an interlaced frame signal for display on a television display when the signal is applied to the device in a reverse sequence
Device for splitting an interlaced television frame into a vertical low-frequency spatial signal and a vertical high-frequency motion auxiliary signal. In a forward play mode the two signals are...
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5392129 |
Digital VCR signal processing apparatus for concealing uncorrectable errors
A signal processing apparatus for use in a digital video signal reproducing apparatus for reproducing digital signal presented in sync blocks is disclosed. Each sync block has a fixed area for low...
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5384670 |
Digital data apparatus for providing spatial multiplexing and demultiplexing of compressed data to be recorded and reproduced
Spatial demultiplexing of data (e.g. video data) is employed in a digital recorder comprising four heads (A, B, C, D) organized as 2 groups (A/C; B/D) each of 2 heads, whereby a field of data...
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5381274 |
Apparatus and method for recycling and reproducing a digital video signal
An information data recording apparatus includes a DCT (discrete cosine transform) circuit (3) for processing a video signal in a DCT fashion, a quantizer (4) for quantizing an output signal of the...
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5377051 |
Digital video recorder compatible receiver with trick play image enhancement
A video recorder compatible receiver for receiving video data from a video recorder such as a video tape recorder ("VTR"). The receiver includes an error concealment circuit, a digital VTR port...
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5365380 |
Variable-speed video signal reproducing apparatus able to switch video signal interpolation
In the reproduction of a video signal from tape-shaped recording medium on which plural oblique tracks are formed in parallel manner, the signal processing for interpolating the video signal...
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5359464 |
Methods of and apparatus for coding television signals having varying frame rates
Apparatus for coding a television signal in common image format in which the video frame rate may have any one of a plurality of predetermined different values and the number of pixels or the...
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5335125 |
Video signal magnetic recording and reproducing apparatus
A video tape recorder capable of recording a normal definition video signal and a high definition video signal having an image quality higher than the normal one in a simulcast for broadcasting an...
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5335116 |
Method and apparatus for recording analog video signal in compressed digital format
A digital video recording system for digitizing analog video signals and recording the digital signals on video tape and for reading digital video signals from video tape and producing an analog...
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5329375 |
Information recording/reproducing apparatus
In the recording apparatus and reproducing apparatus employing variable length coding, a formatting which prevents propagation of error due to transmission route error is realized. The input...
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5317413 |
Digital high-definition video signal recording and reproducing apparatus
A high-definition signal (HD) is separated to prevent the quality of an image from being deteriorated when the high-definition signal is mixed with a standard video signal. A low band signal of the...
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5315448 |
Copy protection for hybrid digital video tape recording and unprotected source material
A hybrid digital/analog video recorder prevents both analog and digital copying. The recorder (including a digital tape deck) inputs and outputs both analog and digital video signals. At the analog...
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5311373 |
Video tape recorder
An apparatus is provided for selectively recording a digital information signal on a first magnetic tape cassette having a tape with a first characteristic or a second magnetic tape cassette having...
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5309290 |
Apparatus for variably compressing video and audio information within constant data block
A digital video/audio recording and reproducing apparatus comprising a video signal high-efficiency encoder having a variable reduction rate, an audio signal high-efficiency encoder having a...
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5301026 |
Picture editing apparatus in a digital still video camera system
A picture editing apparatus of a digital still video camera system includes a digital still video camera and a reproduction device which selectively controls a picture assignment address in a...
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5299070 |
Digital signal reproducing system for processing the reproduced digital signal with the most favorable error rate
A digital signal played back from a record medium is supplied to plural processing circuits which exhibit respectively different characteristics to impart different error rates to the digital...
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5299069 |
Magnetic tape format for recording digital picture data
In a magnetic tape on which digital picture data is recorded along helical tracks formed on the tape, the format used therefore is such that: each picture data segment consisting of picture data of...
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5291469 |
Digital data recording and/or reproducing apparatus
In a digital data recording and/or reproducing apparatus, the frequency of digital data to be recorded or that has been reproduced is converted so that data blocks formed from the digital data have...
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5289322 |
Data rearrangement processing apparatus for digital video signal recording apparatus
An apparatus is described for rearranging the relative positions of data samples of a digital video signal within each field of the video signal, for use in a digital VTR in which alternate samples...
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5280397 |
Bi-directional HDTV format digital signal converter
A television signal format converter is provided for converting without loss of picture information any high definition television format to or from a given recorder/player format. An interface...
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5264920 |
Word rate conversion processing device for processor circuit for processing digital component video signals sampled by different sampling frequencies
A digital component video signal processor or a digital VTR which can record/reproduce both an extended 4:2:2 signal based on sampling at 18 MHz and a 4:2:2 signal based on sampling at 13.5 MHz...
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5253122 |
Recording of digital video signals on a magnetic medium having a particular energy product and surface roughness
A magnetic tape for the recording of digital video signals is constituted by a nonmagnetic base having thereon a magnetic layer of at least one thin magnetic metal film which has an energy product...
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5247399 |
Digital video recording and playback apparatus using different read and write operations for each individual memory
In a digital video recording and playback apparatus, at the time of recording, an analog signal is converted into a digital signal by an analog/digital converter and the thus-converted digital...
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5247400 |
Tape reproducing direction detecting apparatus for a digital VTR
A tape reproducing direction detecting apparatus for a digital VTR in which a reproducing direction of a tape on which each field of a digital video signal is recorded over a plurality of...
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5245428 |
Television system for transmitting picture signals in a digital format
To be able to transmit television pictures in a digital format on a medium having a limited bandwidth, the picture are subjected to a coding operation and thereby converted into a series of...
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5243588 |
Method and apparatus for reading digital data bursts comprising data clusters and cluster linking sectors
There is provided a disc recording apparatus for recording digital data by an optical unit in such a manner that time compressed digital data are arranged into a plurality of clusters at an...
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5241428 |
Variable-delay video recorder
A video recorder and playback device allowing simultaneous recording and playback of program material, including means for controllably varying a time delay between the recording and playback of...
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5239382 |
Image sensing apparatus and recording/reproducing method thereof
The image sensing apparatus of the invention can easily and promptly search those areas of the main tracks of a floppy disk which store no data, or search or edit (e.g. copy) stored data, with the...
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5218599 |
Method of recording and reproduction of information using a recording medium available for information overlap recording, a recording medium and a recording and reproducing apparatus using the method
A recording medium is provided with a recording film having opto-magnetic characteristics formed on the substrate, with first information being recorded in advance in the form of pit strings of a...
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5193010 |
Digital video signal recording and reproducing apparatus having an error concealment control function
In recording and reproducing the digital video signals by bit rate reduction, if they are copied while being subjected to bit rate reduction, no accumulation of distortions in orthogonal...
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5177729 |
Method and apparatus for reading information on information recording medium having track structure
A method of and apparatus for reading information, including error correction codes, is disclosed recording information is read out from one track a plurality of times at a reading velocity not...
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5136394 |
Picture search system for digital recording/reproducing apparatus
In digital recording/reproducing apparatus of the invention, picture signals are digitalized, digital data for picture elements constructing each picture is stored together in a memory, and digital...
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5130861 |
Method and apparatus for reproducing a digital video signal
Digital video data recorded in D-1 format, wherein the video data is recorded in successive block units with each block unit being comprised of several segments recorded in plural tracks and with...
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5070419 |
Method and apparatus for recording and reproducing of a recording medium
When recording digital data on a recording medium, digital data is divided into information units of digital data which are further divided into recording units to be recorded on the recording...
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5047852 |
Adaptive transform encoder for digital image signal in recording/reproducing apparatus
An adaptive transform encoder can keep a recording rate of a digital signal at a constant level. It comprises a unit for orthogonal-transforming one block of digital input signal, a unit for...
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5046042 |
Data processing system
A data processing system processes digital information representing, for example, an image and supplied at a lower transfer rate from a data source such as an optical disc unit, to produce data in...
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4977550 |
Disc playback apparatus for playback of music and digital data
Apparatus for playback from a disc on which main digital data and subsidiary digital data for selectively reproducing of the main digital data have been recorded in multiplex fashion incorporates a...
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4969055 |
Method for recording and/or reproducing digitally coded signals with interframe and interframe coding
A method for recording and/or reproducing digitally coded video signals. A frame sequence is coded in such a way that an intraframe coded picture having a fixed or variable block length is recorded...
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4967286 |
Method and apparatus for forming a digital image on an optical recording disc
A method and apparatus for providing a graphical image on an optical recording disc are described. The method includes the steps of storing a digital image in a first coordinate system as a first...
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4907101 |
Method and apparatus for digital data transmission and/or recording and playback
A method for the transmission and/or recording and playback of digital data wherein the data are converted in sections to digital signals whose word length is a function of the information density...
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4903148 |
Digital signal editing apparatus
A novel digital signal recording and reproducing apparatus is disclosed in which an audio digital signal is recorded and reproduced alone or together with a video signal in a video tape recorder....
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4875107 |
Camcorder
A video apparatus for storing video images on a recording medium and replaying the stored images on a display includes a camera which converts light images into electrical video signals. A...
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4862296 |
PCM signal reproducing apparatus with adjustable phase lock loop circuitry
A clock regeneration circuit for use in data reproducing apparatus which reproduces and demodulates digital data that has been recorded on a magnetic medium in accordance with different types of...
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4862292 |
Digital information signal recording apparatus
A digital information signal recording apparatus has a first mode in which a digital information signal of one channel is recorded on a recording medium at a given bit rate and a second mode in...
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