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| Number | Title | Issue Date |
| 8111074 | Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment A testing method or apparatus utilizes multiple frequencies applied to a device under test for measuring newly discovered frequency modulation effects. An embodiment may include a lower frequency signal with a smaller amplitude higher frequency signal to test a dyna... | 02/07/2012 |
| 8094818 | Method to synthesize video copy protection signals A method and apparatus for defeating copy protection signals in a video signal, and also for providing copy protection signals for a video signal, is disclosed. The defeat technique generally utilizes a particular pulse position shifting, modulation, etc., of AGC, n... | 01/10/2012 |
| 7805056 | Methods and apparatus for providing cycles of normal and non normal phase in a color burst signal A method and apparatus provides a modified color stripe video copy protection signal. Normally, prior color stripe video copy protection signals include a color burst signal in which all cycles of subcarrier have an incorrect (i.e., non-normal) phase, thereby to pro... | 09/28/2010 |
| 7792293 | Method and apparatus for modifying a subsequently generated control command in a content control system In record or content control management systems, various selected reference, record control, copy protection or control information signals, or other signifiers, are used to identify control signals, for example, bits, to provide control of subsequent use of data, a... | 09/07/2010 |
| 7734142 | Apparatus for providing a modified analog video signal from an internet transmission of a video signal A modified Colorstripe™ copy protection process utilizes a basic anti-copy protection (ACP) signal that causes attenuation of a video signal, wherein, in one embodiment, the process modifies (lowers) the level of a front porch portion and adds an incorrect color s... | 06/08/2010 |
| 7664369 | Method and apparatus for improving the playability of a PAL or NTSC video signal containing color burst modifications In the known color stripe process for preventing recording of video signals, the color burst present on each line of active video is modified so that any subsequent video tape recording of the video signal shows variations in the color fidelity that appear as undesi... | 02/16/2010 |
| 7550977 | Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment A testing method or apparatus utilizes multiple frequencies applied to a device under test for measuring newly discovered frequency modulation effects. An embodiment may include a lower frequency signal with a smaller amplitude higher frequency signal to test a dyna... | 06/23/2009 |
| 7395545 | Method and apparatus for providing copy protection using a transmittal mode command A method and system of providing copy protection of video analog and digital signals and the like, wherein the signals are transmitted via a digital delivery network, and may comprise, for example, pay-per-view (PPV) program materials protected by copyrights of resp... | 07/01/2008 |
| 7298962 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system A method and apparatus is disclosed which reduces or removes the effectiveness of commercial skip systems such as presently found in VCRs, PVRs, etc. which are designed to delete commercials from signal material upon playback of a previously recorded version of the ... | 11/20/2007 |
| 7236683 | Method and apparatus for providing or enhancing copy protection by adding selected negative-going and positive-going pulses in a video signal HBI The horizontal blanking interval (HBI) of a normal video signal is modified to enhance the playability of the applied copy protected video signal while maintaining the copy protection effectiveness. As generally known, a copy protected video signal with positive-goi... | 06/26/2007 |
| 7100209 | Method to provide the generation of an incorrect or unreliable vertical/frame rate signal Techniques for modifying the characteristic signals of the Vertical Blanking Interval (VBI) are disclosed for the generation of an incorrect or unreliable vertical or frame rate signal, via particular characteristics and/or peculiarities of the signals in the VBI. T... | 08/29/2006 |
| 7050698 | Method and apparatus for synthesizing or modifying a copy protection signal using a lowered signal level portion A modified Colorstripe™ copy protection process utilizes a basic anti-copy protection (ACP) signal that causes attenuation of a video signal, wherein, in one embodiment, the process modifies (lowers) the level of a front porch portion and adds an incorrect color s... | 05/23/2006 |
| 7039294 | Method and apparatus for modifying the effects of color burst modifications to a video signal In the known color stripe process for preventing recording of video signals, the color burst present on each line of active video is modified so that any subsequent video tape recording of the video signal shows variations in the color fidelity that appear as undesi... | 05/02/2006 |
| 6988206 | Prevention of CD-audio piracy using sub-code channels A method for protecting data recorded on an original storage medium against unauthorized copying. The data are encoded in accordance with Standard 908 of the International Electrotechnical Commission. A portion of the encoded data is altered to introduce an error in... | 01/17/2006 |
| 6952479 | Dynamic copy protection of optical media A method for copy protection includes receiving data in a recording module representing content to be recorded on a recording medium, the data including an indication that the content is to be protected from unauthorized copying. Responsive to the indication, the re... | 10/04/2005 |
| 6931547 | Method and apparatus for identifying a vertical blanking interval in a television signal Various techniques and associated embodiments are disclosed for providing defensive measures against “black boxes,” wherein the techniques utilize unconventional schemes for detecting the vertical blanking interval (VBI) of a video signal containing a copy prote... | 08/16/2005 |
| 6724826 | Method and apparatus for improving the image quality of transmitted video signals via pre-filtering A method and apparatus is disclosed which minimizes the visual artifacts normally generated when images are compressed for transfer through very narrow band channels such as, for example, the Internet. To this end, the images are pre-filtered and then scaled down pr... | 04/20/2004 |
| 5393581 | Readily applied and removed shield for graphite shafts A tubular member defining a shield is formed of a pliable yet resilient plastic split along one side of its length. The cross section of at least one end is selectively tapered to provide an extended end portion at the extreme end of the tapered cross sec... | 02/28/1995 |
| 5301018 | Method and apparatus for shuffling image data into statistically averaged data groups and for deshuffling the data In a data compression process such as employed to compress video or other data, it is preferable not to compress the image data representative of the video image in a sequential format, or to take the data from the same area of the image. To equalize the ... | 04/05/1994 |
| 5248112 | Tape transport control system with a feedforward capstan drive to the reel motors A feedforward circuit applies a capstan drive current, or its equivalent, to the reel tension servo circuits whose associated reels are transporting the tape. The additional drive current to the reel drive motors increases the rotational velocity of the r... | 09/28/1993 |
| 5231680 | Horizontal adaptive error concealment system for component digital television signals Error concealment of an erroneous pixel in a line of pixels is provided by adaptively using a large number of adjacent correct pixels along the same horizontal line. The invention discards any corrupted adjacent pixel which would be used in the calculatio... | 07/27/1993 |
| 5166850 | Rigid, wedge-shaped mounting structure for minimizing resonances to allow rapid transverse movement of an attached head An improved head mounting assembly includes a wedge-shaped rigid head support member which minimizes resonances when operating at rapid transverse head movements, and which operates in conjunction with a photo-sensitive head positioning apparatus, to prov... | 11/24/1992 |
| 5146324 | Data compression using a feedforward quantization estimator An image data compression technique is described which utilizes calculating means and a selected series of bit calculating stages having delays, to estimate one or more quantization parameters for such data. The estimation process preferably is iterated a... | 09/08/1992 |
| 5103355 | System for correlating head scan tracking and tape timer transitions A scan tracking centering algorithm is not left at a nominal value, but is modified based on a tape timer's position into the field. That is, the scan tracking centering is adjusted forward (i.e., down) if the tape timer indicates the tape position is ear... | 04/07/1992 |
| 5077623 | Method and apparatus for automatically optimizing the record current in a tape recorder using a reference tape A record current optimization technique includes a magnetic reference tape pre-recorded with a selected frequency at a precisely known level into the tape. A magnetic tape recorder is loaded with the reference tape, and a reference playback level is recov... | 12/31/1991 |
| 5047883 | Pantograph head mount having double leaves integral with a rigid tip structure A pantographic head mount includes a pair of generally parallel flexible arms each solidly based at an inboard end and solidly affixed at an outboard end to a rigid structure that carries a magnetic head and is driven by an electromagnetic motor positione... | 09/10/1991 |
| 5031992 | Multiple parallel channel rotary optical coupler A multi-channel rotary optical coupler incorporates a multi-element lens assembly formed of a coplanar plurality of annular convex lens elements, with each lens element of the assembly having a substantially constant annular width and a discrete optical a... | 07/16/1991 |
| 5016961 | Optical apparatus for electrically inter-coupling rotating and stationary devices Transmission of one or more electrical signals from a rotatable to a stationary member is provided along one or more channels, with an array of optical emitters positioned in a circle concentric with the axis of rotation of the rotatable member. A concent... | 05/21/1991 |
| 4992857 | System for distributing and recovering digitized composite SECAM samples in a two channel digital apparatus A technique for concealing large data losses such as the 50% data loss experienced when a data channel of, for example, a two channel composite SECAM digital video apparatus is lost. The digitized video samples are grouped and the groups are distributed i... | 02/12/1991 |
| 4989073 | System for compensating timing errors during sampling of signals At the input to a video signal time base corrector, the phase error is sampled during each burst interval and is used to control the operation of an analog-to-digital convertor to compensate for phase errors at the start of each line. Progressive phase er... | 01/29/1991 |
| 4860089 | Apparatus and method for tracking the subcarrier to horizontal sync of a color television signal Tracking of a standard or non-standard input video signal, such as a NTSC or PAL composite video signal, is provided by supplying the phase difference between a horizontally-related subcarrier signal, and a variable horizontal sync signal, which is indica... | 08/22/1989 |
| 4834027 | Apparatus for restraining an animal within a preselected area A tether apparatus is secured at either end to suitable supports and thus spans one edge of a preselected area within which an animal is to be confined. The apparatus includes a folded back floating loop configuration, which floating loop translatably rec... | 05/30/1989 |
| 4821121 | Electronic still store with high speed sorting and method of operation An electronic still store system stores and selectively outputs video image data defining a plurality of signal frame still images. The simultaneous display of up to 16 or more quarter sized images for scanning or sorting by an operator is facilitated by ... | 04/11/1989 |
| 4802023 | System for reading and writing vertical interval time code A system for editing videotape includes a subsystem to scan particular information lines within vertical blanking intervals and to identify particular lines that contain time code information, and a subsystem to generate time code information and to write... | 01/31/1989 |
| 4800450 | Method and apparatus for controlling deployment of a tape transport member Tape guides of a magnetic tape transport machine are controlled during movement by sensing the position of the member as it moves along a defined path in varying velocity corresponding to the position. The member is initially accelerated at a selected rat... | 01/24/1989 |
| 4797730 | Method and apparatus for controlling the sampling phase of an analog color television signal A composite analog video signal is sampled at precise locations relative to the phase of the unmodulated color subcarrier along each horizontal line of the video signal. This provides a digitized signal with a constant phase relationship relative to the u... | 01/10/1989 |
| 4786985 | Method and apparatus for extracting binary signals included in vertical blanking intervals of video signals An apparatus and method for the extraction of vertical interval time code (VITC) included in the vertical blanking interval of a television signal reproduced from video tape transported past a rotating transducer over a wide range of speeds. VITC informat... | 11/22/1988 |
| 4782392 | Apparatus and method for generating a rotating clock video wipe An apparatus and method for generating a rotating clock video wipe from two voltage ramps. The voltage ramps are rotated according to rotation data supplied by a controller. The rotated ramps are combined and fed to an output signal generator and then a v... | 11/01/1988 |
| 4767970 | Dynamic brake control for a tape drive system In a tape drive system, a dynamic brake control circuit provides dynamic braking for slowing and stopping an associated tape reel and motor system in the event of a power failure. Upon sensing a power failure, the electrical energy stored in a capacitor s... | 08/30/1988 |
| 4764809 | Apparatus and method for producing a variety of video wipe borders An apparatus and method for generating waveform signals for the production of a variety of borders for video wipes by varied processing of the output of a ramp generator.... | 08/16/1988 |
