Quotables
"Everyone acquainted with the subject will recognize it as a conspicuous failure."
Henry Morton, president of the Stevens Institute of Technology ; Said in 1880 about the light bulb
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7324024 | High frequency compensator and reproducing device A high frequency compensator configured to compensate high frequency component of a digital audio signal comprising a down sampler configured to perform ½ down-sampling for the digital audio signal. An up sampler is configured to perform double up-sampling for an o... | 01/29/2008 |
| 7260268 | Signal processing apparatus and signal processing method, recording medium and program An input signal is accurately separated into a component in which a change in signal level is sharp and having a large edge, and the other components. A narrow band non-linear filter extracts an edge component in a relatively narrow frequency band from an inp... | 08/21/2007 |
| 7151802 | High frequency content recovering method and device for over-sampled synthesized wideband signal In a method and device for recovering the high frequency content of a wideband signal previously down-sampled, and for injecting this high frequency content in an over-sampled synthesized version of the wideband signal to produce a fill-spectrum synthesized wideband... | 12/19/2006 |
| 7139141 | System and method for read/write optimization In a tape drive for storing and retrieving information to and from a media, a system for optimizing write performance includes a tape head and a controller. The tape head may include a write element. The controller may be for optimizing write performance in response... | 11/21/2006 |
| 7106366 | Image capture system incorporating metadata to facilitate transcoding A method for generating an enhanced compressed digital image, including the steps of: capturing a digital image; generating additional information relating to the importance of photographed subject and corresponding background regions of the digital image; compressi... | 09/12/2006 |
| 7065211 | Signal reproducing/recording/transmitting method and apparatus and signal recording medium A video signal reproduction system for receiving a video signal transmitted via a satellite communication link at a receiving device. A copy permission indicator is inserted in the received video signal. The copy permission indicator is generated on the basis of cop... | 06/20/2006 |
| 7042518 | Digitally controlled variable frequency HF emphasis circuit for use in video displays A sharpness filter processes a video signal that is to be displayed in a windowed environment. The windowed environment may contain windows that for displaying television images derived from video standards such as NTSC, PAL, and SECAM. Displaying windowed televisio... | 05/09/2006 |
| 7012651 | Video signal processing method and apparatus A video signal processing method and apparatus eliminates dot crawls and cross color interferences from a component video signal that has been subjected to Y/C separation. Components at a horizontal frequency of 3.58 MHz and a temporal frequency of 15 Hz are extract... | 03/14/2006 |
| 6980653 | Signal reproducing/recording/transmitting method and apparatus and signal record medium A system for providing a copy permission indicator in a video signal. The copy permission indicator is generated on the basis of copy management information that has been appended to the video signal and detected by the system. The indicator is in the form of a mult... | 12/27/2005 |
| 6950147 | Apparatus and method for discriminating color format An apparatus discriminates a color format. The signal processing paths separate a luminance signal and a color signal from a broadcasting signal based on a plurality of color formats. The direct signal path provides a direct output of the broadcasting signal without... | 09/27/2005 |
| 6934466 | Buzz reduction circuit and TV/VCR combo using the same Buzz reduction circuit for eliminating a vertical period buzz without being influenced by amplifier circuits in an audio signal line. A video signal of a VCR video head is input to a vertical synchronizing signal separating circuit to separate a vertical synchronizi... | 08/23/2005 |
| 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 |
| 6285765 | Method and apparatus for reducing effects of copy protection of composite video signal Copy protection for composite video signals is well known. Copy protection, while it does not prohibit making a copy per se, does render any copy (recording) of the video signal relatively unviewable so that the viewer's enjoyment of the picture is severe... | 09/04/2001 |
| 6172713 | Color television system determination circuit A color system determination circuit for use with an input video signal having a frequency component is disclosed. The circuit includes a color trap filter for attenuating the frequency component in the input video signal with the color trap filter provid... | 01/09/2001 |
| 6173110 | Magnetic recording and reproduction apparatus having a recording characteristic correction function of a video signal A magnetic recording and reproduction apparatus corrects recording characteristics of a video signal. The apparatus comprises a luminance test signal generator for generating a frequency-modulated luminance test signal using a predetermined voltage, and a... | 01/09/2001 |
| 6134373 | System for recording and reproducing a wide bandwidth video signal via a narrow bandwidth medium An encoder separates luminance and chrominance signal components of a composite video signal. The frame-to-frame changes in the luminance signal are detected, and a motion signal is derived therefrom. The higher frequency portion of the luminance signal i... | 10/17/2000 |
| 6101312 | Automatic picture quality controller An automatic image quality-controlling device, where an FM signal output from a video head is amplified in an AGC amplifier to a uniform amplitude level. A lower-sideband variable peaking amplifier peaks the lower-sideband spectrum of the FM signal at abo... | 08/08/2000 |
| 6014180 | Automatic gain control loop circuit In an automatic gain control loop circuit supplied with two channel signals alternately input thereto, a first capacitor filter and stores the first signal output from the level detector circuit, and a second capacitor filters and stores the second signal... | 01/11/2000 |
| 5913007 | Envelope detection apparatus for video cassette recorder A video cassette recorder envelope detection apparatus which can accurately detect an envelope reflecting the state of a system. The envelope detection apparatus may include a reference voltage setter for setting a second reference value which is altered ... | 06/15/1999 |
| 5909531 | Television signal recording/reproducing apparatus and method with DC shifter Recording and reproducing a television signal with a DC shifter prevents compression distortion of a PAL plus television signal. The PAL plus television signal includes a vertical resolution signal for enhancing vertical resolution which vertical resoluti... | 06/01/1999 |
| 5875278 | Recording/reproducing device comprising a plurality of audio channels and a rotary encoder which controls two independent level adjusting means A device for adjusting audio and video signals includes two rotary encoders, one for plural audio adjusting circuits which are arranged to adjust audio signals and the other for plural video adjusting circuits which are arranged to adjust video signals. T... | 02/23/1999 |
| 5745635 | Adaptive deemphasis and reemphasis of high frequencies in video tape recording, utilizing a recorded control signal A video signal recording system is disclosed which includes a circuit for generating a control signal representative of the level of the high-frequency portion of a full-bandwidth luminance signal. An adaptive deemphasis circuit reduces the level of the h... | 04/28/1998 |
| 5724470 | Television signal recording/reproducing apparatus and method with DC shifter Recording and reproducing a television signal with a DC shifter prevents compression distortion of a PAL plus television signal. The PAL plus television signal includes a vertical resolution signal for enhancing vertical resolution which vertical resoluti... | 03/03/1998 |
| 5673355 | Deemphasis & Subsequent reemphasis of high-energy reversed-spectrum components of a folded video signal A system for reproducing a luminance signal from a medium containing a previously recorded luminance signal with a high-frequency portion thereof compressed in dynamic range includes a circuit for recovering that luminance signal from the medium. Filterin... | 09/30/1997 |
| 5606424 | Simple high-band record modulation circuit in 8MM video tape recorder A record modulation circuit having a first frequency deviation amount determiner for determining the frequency deviation amount suitable for a normal recording mode, and a second frequency deviation amount determiner for determining the frequency deviatio... | 02/25/1997 |
| 5598273 | Recording control device and method utilizing a test signal having multiple frequencies In a magnetic recording control device, a plurality of test signals of different frequencies are recorded on and reproduced from a magnetic recording medium, and the reproduction levels of the test signals are detected. From the detection results, the fre... | 01/28/1997 |
| 5596418 | Deemphasis and subsequent reemphasis of high-energy reversed-spectrum components of a folded video signal A system for reproducing a luminance signal from a medium containing a previously recorded luminance signal with a high-frequency portion thereof compressed in dynamic range includes a circuit for recovering that luminance signal from the medium. Filterin... | 01/21/1997 |
| 5579119 | Recording signal control apparatus capable of optimizing recording conditions for magnetic recording medium A plurality of test signals of different frequencies are recorded on a magnetic recording medium while gradually increasing or decreasing recording current, and the variation of the level of each of the replayed test signals and the variation of the recor... | 11/26/1996 |
| 5532829 | Automatic color control circuit having a control signal storing capacitor A control circuit includes: a capacitor for normal reproduction which stores an output of a reproduction color burst level detection for automatic color signal level control in a color signal processing circuit at the time of normal reproduction in a vide... | 07/02/1996 |
| 5448367 | Apparatus for automatically controlling generation of a head switching signal An apparatus and a method for automatically controlling pulse generation. The apparatus comprises a drum having video heads, a pulse generating head and a frequency generation head, first and second wave-shapers for wave-shaping a pulse generation signal ... | 09/05/1995 |
| 5432612 | Multi-mode video signal playback and display device A multi-mode display device is made integral with a multi-mode video signal recording and play-back device to enable a control circuit and a control signal to be made in common to each other, With this arrangement, a circuit size can be reduced and at the... | 07/11/1995 |
| 5430551 | Video recorder with distortion corrector circuit A brightness signal distortion correction circuit (8, 11, 21) is provided for a video recorder, having distortion correction circuit (11), responsive to frequency-modulated brightness signals, and further responsive to feedback disturbance recognition con... | 07/04/1995 |
| 5430495 | Video playback apparatus capable of varying caption brightness based on audio level Disclosed is a video playback apparatus which functions to vary the brightness of the caption color of a displayed caption according to audio level of the playback. The video playback apparatus displays caption signals on a predetermined area of a TV scre... | 07/04/1995 |
| 5418619 | Apparatus and method for selectively adapting a playback characteristic to meet video performance requirements In a backward compatible video signal recording and playback system for recording a full bandwidth video signal on a limited bandwidth medium utilizing a luminance signal having high frequencies being folded into low frequencies and unfolded on playback, ... | 05/23/1995 |
| 5404230 | Color burst phase correcting color signal reproducing circuit A color signal reproducing circuit comprising a phase correction device receiving a gain-controlled composite color signal, detecting color burst signal in a composite color signal and correcting phase of the color burst signal by using a 3.58 MHz signal,... | 04/04/1995 |
| 5386296 | Chroma burst detection system A video cassette recording (VCR) playback system includes circuitry for separating the components of a video signal to produce luminance information and color-under information. The separated color-under information is applied to the input of a variable g... | 01/31/1995 |
| 5377012 | Color signal processing circuit for a video cassette recorder A color signal processing circuit for a VCR includes: an APC circuit for recording; an APC circuit for playback; a first circuit providing a color signal for recording; a second circuit providing a color signal for playback; and a switch block having a se... | 12/27/1994 |
| 5371601 | Luminance signal unfolding and reemphasizing circuit A video playback device for playing back a video signal recorded to a recording medium such as a magnetic tape by folding a high frequency signal component onto a low frequency signal component. A luminance signal decoding circuit is made such that since ... | 12/06/1994 |
| 5347319 | Circuit for regulating the color subcarrier amplitude in a video recorder A circuit for regulating the color subcarrier amplitude in a video recorder used with a television receiver which employs overscanning of the electron beams for different modes of operation includes a regulating circuit for providing a regulating voltage ... | 09/13/1994 |
| 5333060 | Video signal processing circuit of a video signal recorder/reproducer Video signal processing circuits which improves an adaptive folding circuit and an adaptive unfolding circuit for lowering and restoring the signal level of a high frequency component in processing a luma signal of a video signal wherein the adaptive fold... | 07/26/1994 |
