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| Number | Title | Issue Date |
| 7289721 | Method and apparatus for data reproduction A data reproduction method and apparatus includes first circuitry to produce an information signal from a storage medium. The information signal includes copy control information. Detection circuitry is provided to detect the copy control information. Control circui... | 10/30/2007 |
| 7250967 | Apparatus for modifying reproduction frequency band of video signal False signals and noise are reduced in a device such as a digital still camera having a solid-state electronic image sensing device. To achieve this, a luminance signal generating circuit generates luminance signals Y1 and Y3 having different reproduct... | 07/31/2007 |
| 6931197 | Frequency modulation (FM) recording apparatus of video tape recorder A frequency modulation (FM) recording apparatus for recording an FM modulated video signal onto a recording medium is provided. This recording apparatus (luminance components plus color components) includes an automatic gain controller; a limiter for limiting the le... | 08/16/2005 |
| 6829429 | Video recording device for recording video signal including character information A video recording device for recording a plurality of sets of video information including a plurality of sets of character information is provided. An ADC sequentially receives the plurality of sets of video information at a receive frequency. A character extracting... | 12/07/2004 |
| 6249642 | Extended play radio vision cassette recorder system and method of operating same An extended play radio video cassette recorder (EPRVCR) capable of receiving and recording audio and video signals transmitted over a radio frequency channel is provided. The EPRVCR includes a videocassette recorder (VCR) and a tuner capable of receiving ... | 06/19/2001 |
| 5500739 | Frequency-multiplexing FM luma signal with color and 2nd under signals having overlapping frequency spectra A frequency-multiplexed video signal is generated in which a color-under signal and a second under signal are linearly combined with at least partially overlapping frequency spectra to form a composite under signal for an FM luma signal. The frequency-mul... | 03/19/1996 |
| 5493412 | Information signal reproduction apparatus A video signal processing apparatus is arranged to process a composite information signal which is formed by multiplexing first and second information signals having different frequency bands. When the composite information signal recorded on a recording ... | 02/20/1996 |
| 5465071 | Information signal processing apparatus An information signal processing apparatus according to the present invention is arranged to receive as an input a frequency-modulated information signal having a predetermined frequency band, form a sample pulse signal by sampling the input frequency-mod... | 11/07/1995 |
| 5442451 | Helical scan recording/reproducing device for simultaneously helically recording/reproducing both video and audio signals A video tape recorder includes a cylinder provided to rotate about its axis. A magnetic tape moves along a portion of the cylinder surface such that the cylinder surface obliquely traverses the magnetic tape. At least one pair of magnetic heads are mounte... | 08/15/1995 |
| 5432649 | Magnetic recording and reproducing apparatus A magnetic recording and reproducing apparatus wherein synchronizing separation of a reproduction video signal can be performed accurately and a stabilized reproduction video signal can be obtained. The magnetic recording and reproducing apparatus include... | 07/11/1995 |
| 5414567 | Magnetic recording and reproducing device A magnetic recording method and apparatus which performs a quadrature phase shift keying operation on a digital information signal, superimposes a high frequency bias signal on the performed signal, records the resulting signal into a deep portion of a ma... | 05/09/1995 |
| 5396372 | Audio signal recording and reproducing apparatus There is provided an audio signal magnetic recording and reproducing apparatus in which a frequency modulated luminance signal and a frequency modulated audio signal are sequentially recorded and reproduced onto/from the same magnetic tape as recording lo... | 03/07/1995 |
| 5285288 | Video signal reproducing apparatus with time base corrector In an apparatus for reproducing, from a record medium, a recorded video signal including an FM-modulated luminance signal and a chroma signal which is down-converted from an original frequency band; the FM-modulated luminance signal reproduced from the re... | 02/08/1994 |
| 5227891 | Method of recording fine color video signal on optical recording media and method of reproducing thus recorded fine color video signal A fine color video signal including a fine component in a high frequency area has a level of an upper side band of the fine component raised by a predetermined level after FM modulation. An amplitude of the FM modulated color video signal is limited by a ... | 07/13/1993 |
| 5223943 | Still-video signal playback apparatus with plural system demodulator and low pass filter selection and delay compensation A charge transfer element is utilized and the frequency of clock pulses applied to the charge transfer element is adjusted to compensate for the amount of delay of a luminance signal, which differs from one recording system to another, and a difference in... | 06/29/1993 |
| 5151793 | Recording medium playing apparatus Karaoke is provided more easily and flexibly by recording video signals from multiple video sources on a disk; selecting one of those sources as desired; and reproducing the signals from that source along with either the output of a video camera or graphi... | 09/29/1992 |
| 5142376 | Image signal recording and reproducing system with pilot signal phase-locked with a synchronizing signal An image signal recording and reproducing system is arranged to record on a recording medium an image signal composed of a chrominance signal and a luminance signal which includes a synchronizing signal in the following manner: The luminance signal is mod... | 08/25/1992 |
| 5121073 | FM demodulator arrangement including hold, delay and switching circuits to compensate for signal disturbances In order to reduce the disturbances caused by the head switch in a videotape recorder, in an arrangement for demodulating an FM modulated signal, a fixed value in the hold circuit used for maintaining the fixed value for the signal during the head switch,... | 06/09/1992 |
| 5097349 | Method of recording and reproducing picture information, recording medium, and recording medium playing apparatus Method of recording and reproducing picture information and a recording medium on which the picture information is recorded by the method, and an apparatus for playing such a recording medium. In addition to video format signal and a coded information sig... | 03/17/1992 |
| 5079525 | Audio-video modulator system on IC chip An RF modulator comprising an FM modulator supplied with an audio signal, and AM modulator supplied with the FM modulator output and a video signal, an oscillator for generating a sound subcarrier signal, and an oscillator for generating a main carrier si... | 01/07/1992 |
| 5063457 | Wide-band video signal recording apparatus by using frequency interleave A wide-band video signal recording apparatus is arranged: to frequency modulate a low frequency band portion of a luminance signal; to multiplex a high band portion of the luminance signal with a carrier chrominance signal in such a way as to have their s... | 11/05/1991 |
| 4994923 | Video signal recording and reproducing apparatus with signal processing circuit for improvement of picture quality Herein disclosed is a color video signal recording and reproducing apparatus for recording and reproducing a luminance signal as a frequency-modulated wave and a chrominance signal as a down-converted chrominance signal in and from a recording medium. The... | 02/19/1991 |
| 4851928 | Apparatus for recording low and high bond components of a chrominance signal A magnetic recording and/or reproducing apparatus and methods thereof for a composite color TV (television) signal arranged such that a luminance signal and a high band component of a chrominance subcarrier signal of the composite color TV signal are freq... | 07/25/1989 |
| 4823197 | Recording apparatus and reproducing apparatus Disclosed are a recording apparatus for recording video signals or audio signals on a recording medium wherein a first sound is recorded in that band which is to be used for recording the luminance signal component of the video signal and a second sound i... | 04/18/1989 |
| 4811116 | Video recorder using extended tape tracks to record compressed chrominance In a video recorder having a drum with opposing dual record heads, successive fields of only the luminance signal (without the chrominance signal) are recorded by the heads during successive head rotations through 180°. The tape is overwrapped around the... | 03/07/1989 |
| 4792862 | Apparatus for recording a frequency modulated video signal with selective emphasis of its low frequency components In an apparatus for recording a video signal on a record medium and having a circuit for separating luminance and chrominance signal components from an input video signal, a frequency-modulator receiving the separated luminance signal component and provid... | 12/20/1988 |
| 4739417 | Multi-mode electronic camera A multi-mode electronic camera capable of operating in any of a video camera mode, a one-shot video camera mode, and a still camera mode, and in which the image of the object being photographed can be checked at any time with the use of a color video moni... | 04/19/1988 |
| 4719518 | Magnetic recording apparatus for carrying out recording by selectively using one of two kinds of recording systems A magnetic recording apparatus for carrying out a recording by selectively using one of two kinds of recording systems comprises first through fourth rotary magnetic heads, a first circuit for producing an FM luminance signal, second and third circuits fo... | 01/12/1988 |
| 4709275 | Apparatus for magnetically recording and/or reproducing two-channel audio signals together with a color video signal in successive oblique tracks on a magnetic tape In an apparatus for magnetically recording and/or reproducing two-channel audio signals and a color video signal, the color video signal is processed to provide a frequency-modulated luminance signal and a frequency-converted chrominance signal in a band ... | 11/24/1987 |
| 4703367 | Recording disk data playback apparatus A recording disk data playback apparatus capable of playback of recording disks having a video signal usually with an audio signal recorded thereon by frequency modulation, together with audio data modulated as a pulse train superimposed thereon, includes... | 10/27/1987 |
| 4698693 | Audio magnetic recording and/or reproducing apparatus utilizing frequency modulation A rotary head type magnetic recording and reproducing apparatus comprises a circuit for recording and reproducing a signal on and from a magnetic recording medium by rotary heads, a circuit for obtaining a frequency modulated (FM) audio signal by frequenc... | 10/06/1987 |
| 4691246 | Apparatus for multiplex recording and reproduction of audio and video signals A recording circuit for a video tape recorder which records superposedly a frequency-modulated audio signal with a frequency-modulated luminance signal and a carrier color signal converted to a low frequency band records a carrier wave signal which is fre... | 09/01/1987 |
| 4679097 | Method of recording and reproducing video and audio signals on a magnetic tape A magnetic recording and reproducing method, applicable to a magnetic recording and reproducing apparatus such as a video tape recorder. The method comprising the steps of recording a first signal in a magnetic layer of a magnetic tape by a first head, re... | 07/07/1987 |
| 4660097 | Color video system with digital audio pulse width modulation A method of encoding a recording signal which includes a composite color video signal and a digital audio signal, for recording the same on and reading it from an optical video disc is disclosed. The color video signal is frequency-modulated on a carrier ... | 04/21/1987 |
| 4654724 | Recording method for video and audio signals in magnetic picture recording system A recording method for magnetic recording and further high-density recording of video and audio signals by multiplexing them by frequency division, which is made free of crosstalk among audio signals by varying frequencies of carriers between adjacent tra... | 03/31/1987 |
| 4647983 | Method and apparatus for recording and/or reproducing color video signal A method of recording and/or reproducing color video signal comprises the steps of forming from a color video signal a frequency division multiplexed signal of an FM luminance signal and a frequency converted carrier chrominance signal, recording the freq... | 03/03/1987 |
| 4591924 | Multiplex magnetic recording and reproduction system In a video tape recorder of the helical scan type, a pair of rotary magnetic heads for the audio signal are provided in addition to the rotary video heads so that the audio signal is recorded on the same slant track as of the video signal on a multiplex b... | 05/27/1986 |
| 4583131 | Method and apparatus for stop-motion playback of a record disc A video record medium, such as a record disc, for recording a composite video and audio signal suitable for stop-motion playback, with accompanying audio. Discrete segments of an analog audio signal are digitized and compressed in time and recorded on alt... | 04/15/1986 |
| 4580174 | Apparatus for recording and/or reproducing video and audio signals A video and audio signal recording apparatus includes a first frequency modulator in which a first audio signal to be recorded that may represent a stereophonic left channel modulates a first carrier to produce a first FM audio signal, and a first frequen... | 04/01/1986 |
| 4564868 | Video tape recorder having improved audio characteristics Audio signals to be recorded on a video cassette tape are frequency modulated by a frequency modulator. A subsequent pair of frequency converters produce audio signals whose carrier frequencies are different from each other. The audio signals are recorded... | 01/14/1986 |
