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4866691 |
AC amplifying RF signal processing circuit for optical disk player
An RF signal processing circuit for processing an RF signal read from an optical disk or the like in which the entire dynamic range of an A/D converter circuit used to digitize the RF signal. An...
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4862297 |
Apparatus for reproducing a digital signal without employing tracking signals
A reproducing apparatus for reproducing blocks from a recording medium on which a plurality of signal blocks are recorded on plural recording tracks, uses a rotary head which is rotated at a speed...
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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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4858032 |
Device for extracting still picture frames from a moving image video signal and recording same on a magnetic recording medium
Disclosed herein is a magnetic recording device simple in arrangement, in which, while a motion picture is being recorded, a unitary part of the motion picture is extracted to perform a still...
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4855843 |
Digital video recording
A method of recording and reproducing a digital video signal, the method comprising recording the video signal in oblique tracks on a magnetic tape using a four-head digital video tape recorder,...
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4853797 |
Fir type digital filter for recording and reproducing apparatus
In a recording/reproducing apparatus, having an analog-to-digital converter used in a recording mode and a digital-to-analog converter used in a reproducing mode; a digital filter comprises...
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4851934 |
Analog signal synthesizing processing circuit with periodic noise compensation
An analog signal synthesizing processing circuit with a periodic noise compensation generates analog signal of a plurality of audio signals and so forth containing noise generated almost...
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4852102 |
Interleave sequence method
An interleave sequence method is provided which is used in processing signals during recording and reproducing a digital audio signal to be multiple recorded with a video signal by a rotary head...
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4847701 |
Sub-nyquist sampling apparatus with improved effects processing
A digital type VTR or the like image signal recording and reproducing apparatus using sub-Nyquist sampling on the image includes an interpolator circuit for carrying out interpolation on a signal...
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4841382 |
Audio recording device
A sound signal recorded in a memory synchronously with a low-frequency clock signal is read out with the low-frequency clock signal to reproduce a normal sound, thereby enabling checking of the...
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4839750 |
Method and apparatus for recording and/or reproducing a PCM signal with asynchronous operation
This invention relates to method and apparatus for recording and/or reproducing a PCM (pulse-code-modulated) digital audio signal. According to this invention, all samples are recorded by a...
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4839748 |
Initial state setting system for still picture recording/reproduction device
An initial state setting system in a still picture recording and reproduction device in which a video signal is read from a disk and written into a memory and then repeatedly read from the memory...
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4839755 |
Rotary head type digital signal reproducing apparatus with different modes and tracking control
A rotary head type type digital signal reproducing apparatus plays a magnetic tape which is pre-recorded with a tracking reference signal in predetermined starting and ending portions of each track...
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4839745 |
Computer memory back-up
The interface apparatus couples a video recording device to the parallel data channel of a computer system and also to the computer video output circuitry, so that both digital information (such as...
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4837641 |
Rotary head type digital signal recording and reproducing apparatus
A rotary head type digital signal recording and reproducing apparatus plays a magnetic tape which is pre-recorded with a time division multiplexed audio signal comprising a PCM audio data and a...
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4833663 |
Information recording/reproducing apparatus for handling defective sectors on an optical disk
Disclosed is an information recording/reproducing apparatus which uses a rewritable recording medium having a sector structure, and in which a data writing gate signal and a data erasing gate...
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4831464 |
Signal recording conditioning device
In a signal recording circuit, a dither signal in a frequency band of from a frequency higher than 1/2 of the sampling frequency of a recording signal to a frequency lower than (n-1/2) of the...
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4825305 |
Apparatus for recording and reproducing digital using dynamic range compression
A digital signal recording and reproducing apparatus comprising a dynamic range compression/expansion apparatus. The compression/expansion apparatus receives a digital signal from, for example, an...
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4823207 |
PCM recording and playback with variable read and write speeds
A method and an apparatus for recording and reproducing a PCM audio signal either alone or together with a video signal, using a rotary-head type scanner. An analog audio signal is converted into a...
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4819088 |
Magnetic recording and reproducing system
A magnetic recording and reproducing system encodes a digitized audio signal into first and second blocks which are constituted by sample of the audio signal within one field or one frame of a...
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4819090 |
Digital signal reproducing apparatus
A digital signal reproducing apparatus comprises a block address counter which is reset immediately before reproduction of a subcode region on a magnetic tape and a PCM data region to start a...
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4816926 |
Rotary head digital audio tape recorder with multiple recording modes
This invention relates to an information signal recording apparatus which can be used also as an audio tape recorder only. When it is used only as the audio tape recorder, an audio signal is...
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4815131 |
Digital audio channel selection circuit
A digital audio channel selection circuit for a serial audio signal having two multiplexed channels. The digital signal is converted from digital to analog and applied to two separate sample and...
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4812924 |
Method and apparatus for reproducing or recording a PCM signal and sub data concerning the PCM signal in a paired format
A rotary head type digital tape recorder in which a PCM signal and sub data for control and the like concerned with the PCM signal are recorded and/or reproduced by rotary heads. The invention...
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4813014 |
Digital audio memory system
A method and apparatus for rapid access digital storage and playback of audio information that consists of a large array of solid state random access memory devices connected in a basic...
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4812987 |
Wave shaping circuit
A wave shaping circuit includes a digital sampling circuit for sampling an input signal and producing a digital signal. The sampled signal is detected by a sign detector for detecting whether it is...
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4811120 |
Information signal recording and/or reproducing apparatus
An information signal recording and/or reproducing apparatus for recording and/or reproducing signals with transducing means in or from a given area on a recording medium is arranged to detect by...
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4811370 |
Digital muting circuit
A first digital sound data of N-bits delivered from the input terminal is controlled by a mute control signal indicating either on-mute state signifying the state where mute operation is conducted...
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4807057 |
Data recording apparatus
A data recording apparatus samples main information signals and records, on a recording medium, a sequence of data consisting of first binary data of an "n" number of bits and second binary data...
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4803570 |
Rotary head type multichannel information signal reproducing apparatus having sub-information search function
A reproducing apparatus for reproducing main information from a tape-shaped record bearing medium on which many recording tracks are formed in parallel and additional information recorded along...
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4802172 |
Decoding apparatus
A decoding apparatus in which the operation to write error correction coded data into a memory and a decoding processing operation of the data read out of the memory are executed in parallel. This...
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4802038 |
PCM audio signal recording and/or reproducing apparatus with program timer and series and parallel formats
In a PCM (pulse code modulated) audio signal recording and/or reproducing apparatus, a scanning track formed by one scanning of a tape by a rotary head is divided into a plurality of track areas in...
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4799113 |
Apparatus for processing digital data
An apparatus for processing digital data, for example, as reproduced by a digital video tape recorder, includes a first memory in which words or blocks of reproduced digital data are written in...
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4799111 |
Video signal recording and/or reproducing apparatus with a function for re-recording a search control-index signal
In an apparatus for magnetically recording and/or reproducing an information signal, such as, an 8 mm video tape recorder, and which records index signals representing various data in the tracks in...
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4794468 |
Magnetic disk with analog and digital video signals recorded thereon and apparatus for making recording on said disk
A magnetic disk contains video signals, representing an image, recorded on some tracks thereof in the form of digital signals, and also contains video signals, representing the same image, recorded...
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4791497 |
Apparatus for recording and/or reproducing, in successive slant tracks on a record tape, at least an audio signal and an index signal for controlling tape transport
In an apparatus for recording and/or reproducing, in successive slant tracks on a record tape, an information signal comprised of at least an audio signal and an index signal for use in controlling...
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4791495 |
Digital signal recording and reproducing system having an interface for dubbing a color television signal in the component form
A digital recording and reproducing system wherein luminance signals digitized and converted into the low speed signals and chrominance signals digitized at the time of recording are distributed...
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4775897 |
Dubbing method and apparatus for digital recording reproducing apparatus including direct digital outputs
Disclosed is an apparatus in which a picture signal is converted into digital signals and the digital signals are recorded into a recording medium, and which is suitable to perform dubbing of the...
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4772960 |
Apparatus for recording and/or reproducing an information signal comprised of at least an audio signal and an index signal
In an apparatus for recording and/or reproducing an information signal, such as, a PCM (pulse-code modulated) signal and the like, in slant tracks on a recording tape by means of rotary heads, and...
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4772959 |
Digital signal recording and reproducing 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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4769722 |
Apparatus for recording and reproducing a video signal and for recording and reproducing a PCM audio signal on forward and reverse tape travelling directions
A helical scanning type magnetic recording and reproducing apparatus records a signal representing recording conditions on a magnetic tape when a recording is effected thereon, together with a PCM...
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4768106 |
Apparatus for recording video and PCM audio signals with insert editing using axially displaced heads
An apparatus for recording video and digital audio signals in separate sections of slant tracks on a magnetic tape in the 8 mm format includes two main rotary magnetic heads for recording and...
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4766507 |
Rotary head reproducer with means for detecting the direction of audio recording during searching
An audio signal reproducing apparatus for reproducing audio signals from a tape-shaped recording medium on which the audio signals are recorded together with mark signals respectively showing the...
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4766505 |
Method and apparatus for recording video and audio signals in successive tracks on a record medium
A method and apparatus for recording and reproducing an information signal comprised of a video signal and an audio signal in a plurality of successive parallel tracks on a magnetic tape, each...
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4764820 |
Picture element arranging method in video data recording-reproducing system
A video data recording/reproduction method used in a VTR, wherein distribution of picture elements into channels is altered for each field or frame so that the same picture element arrangement...
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4764913 |
Signal processing apparatus for disc memory devices
A disc is provided with the equal-interval pits along tracks, at which digital signals are recorded bit by bit. Such a disc is rotated at the constant angular velocity. A signal processing...
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4763207 |
Digital method and system for reproducing analog data
There is disclosed herein a method of and system for reproducing an analog signal using digital techniques. The system includes means for encoding the analog signal in digital form and means for...
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4763206 |
Apparatus for recording video and audio signals
In an apparatus for recording video and audio signals, and in which a video signal has its time base compressed to 1/N the time base of a standard television signal and the time base compressed...
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4758902 |
PCM signal recording and reproducing apparatus including simultaneous error detection/correction
A PCM signal recording and reproducing apparatus comprises first and second memory circuits, in which PCM signals are read and written using the first memory circuit, while PCM signals stored in...
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4758899 |
Data compression control device
A control device has a data compression control circuit for compressing data and a data buffer for temporarily storing the data to be written on a recording medium. The data transferred from a CPU...
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