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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7366908 | Digital watermarking with content dependent keys and autocorrelation properties for synchronization A digital watermark detection method exploits autocorrelation properties of the watermarked signal that enable synchronization of the digital watermark despite temporal or geometric distortion of the host signal. Other watermark methods employ keys, including a key ... | 04/29/2008 |
| 7345690 | Display system for adjusting video parameters for user-selected area A display system for adjusting video parameters of a user-selected area is disclosed. The display system includes a level detector detecting a line pattern included in one of a plurality of image lines representative of a complete image being displayed, and a patter... | 03/18/2008 |
| 7333153 | Expanded information capacity for existing communication transmission systems A system for transmitting digital programming includes a program source providing digital information, circuitry for modulating the digital information onto a visual carrier modulated with analog television programming, and a visual transmitter coupled to the modula... | 02/19/2008 |
| 7304685 | Device and method for modifying video image of display apparatus A device and method for modifying a video image of a display apparatus method, for efficiently modifying a size and aspect ratio of a video image, is disclosed. The device includes an on-screen display (OSD) generator providing an on-screen display (OSD) on a displa... | 12/04/2007 |
| 7248302 | Picture signal processing In a picture signal processing method, an analog picture signal (APS1, APS2) is processed (PSP) in dependence on a quality indication (QI1, Q12) relating to the analog picture signal (APS1, APS2) and received together with t... | 07/24/2007 |
| 7129992 | Method and system for video display with automatic reframing A system and method are provided for displaying a video composed of images each comprising a predetermined number M of lines and, a predetermined number N of pixels in each line. Values of a predetermined number P of reference pixels for each line of a current image... | 10/31/2006 |
| 7071992 | Methods and apparatus for bridging different video formats A video format bridge employs a plurality of techniques to insure that the line buffer does not suffer underflow or overflow conditions, and that the output frame rate matches the input frame rate. The bridge handles the problem of residue lines, addresses fluctuati... | 07/04/2006 |
| 7042519 | Control apparatus and method for preventing repeated signal processing in signal processing system A control apparatus and method for processing a signal, and more particularly, a control apparatus and method for preventing a signal from being processed repeatedly by transmitting and receiving information related to a signal processing in a composite signal proce... | 05/09/2006 |
| 6950604 | Transport stream recording apparatus and method, transport stream reproducing apparatus and method, and program recording medium Random access reproduction in prompt response to user commands is realized. A stream analyzing block analyzes sequentially inputted transport streams to get entry point data. Discontinuity point data are obtained in correspondence to a discontinuity occurrence flag ... | 09/27/2005 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6944185 | Selectable depacketizer architecture A scheme is provided that permits the use of a selectable depacketization module to depacketize data streams. An RTP session manager is responsible for receiving RTP packets from a network and parsing/processing them. A depacketizer module is located using the type ... | 09/13/2005 |
| 6937618 | Separating device and method and signal receiving device and method A separating device and method and a signal receiving device and method are presented. The separating device and method receive plural data streams and then separate and extract at least a portion of data from the received data streams. The signal receiving device a... | 08/30/2005 |
| 6912251 | Frame-accurate seamless splicing of information streams A method and apparatus for effecting a seamless, frame accurate splicing of MPEG-like transport streams by constructing a transition stream or clip with portions from each stream proximate respective splice points. ... | 06/28/2005 |
| 6873368 | Low noise encoding and decoding method An adaptive digital image processor precedes an MPEG2 encoder. The processor receives a high definition video signal intended for broadcast or storage, and adaptively low-pass filters the signal. The signal is subjected to low-pass two-dimensional filtering to elimi... | 03/29/2005 |
| 6480545 | Architecture for multi-format video processing An architecture for multi-format video processing of both high definition and standard definition television signals has a pair of processing paths. For HDTV one path processes the luminance component signal and the other path processes an interleaved col... | 11/12/2002 |
| 6366324 | Transmitting sequentially scanned images through a channel intended for interlaced images In a method for encoding a non-interlaced signal (60P) into an interlaced signal (60I) and an auxiliary signal, the interlaced signal (60I) is generated in dependence on the non-interlaced signal (60P), and the auxiliary signal is generated by furnishing ... | 04/02/2002 |
| 6347115 | Method and system for predictive coding of images treated with the Roberts Method The method and system of this invention predictively encodes and decodes an image signal that has been treated with the Roberts Method. The method and system generates a noise signal that is substantially similar to the noise signal generated during the R... | 02/12/2002 |
| 6326960 | Video output phase control in a decoder The present invention provides a method and apparatus for providing video output phase control in a decoder. In particular, the present invention provides a decoder that precisely aligns output of video display data with a time stamp associated with the v... | 12/04/2001 |
| 5914752 | Band-division signal processing system A band-division signal processing system includes a coding unit and a decoding unit. The coding unit includes: an extracting unit for extracting a part of an original signal to produce a partial band signal; a first quantizer for quantizing the partial ba... | 06/22/1999 |
| 5684540 | Video signal decoding apparatus for use with varying helper signal levels A video signal is reproduced by adjusting the amplitude of a horizontal high frequency signal, a vertical high frequency signal and a vertical temporal high frequency signal. Helper signals can be demodulated even if the helper signal levels vary due to r... | 11/04/1997 |
| 5666170 | Apparatus for decoding video signals encoded in different formats An adaptive receiver includes an adaptive decoder for providing decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The apparatus includes an adaptive decoder for providing a first decoded output as a function... | 09/09/1997 |
| 5559559 | Transmitting a secondary signal with dynamic injection level control A secondary signal is processed and injected into a primary video signal. The injection level of the secondary signal is dynamically controlled to reduce transmission errors in the secondary signal, and to minimize interference and power level limitations... | 09/24/1996 |
| 5539842 | Method and apparatus for compressing and decompressing images of documents A method and apparatus for compressing images having a binary extractor, a binary compressor and a JPEG compressor. The binary extractor produces a binary image representing an estimate of the binary information in the original image. The binary image is ... | 07/23/1996 |
| 5534932 | Letterbox television system In a method of transmitting an extended television signal comprising a wide aspect ratio picture between two horizontal bars so as to form a standard aspect ratio picture, in which vertical resolution enhancement signals are transmitted to improve the ver... | 07/09/1996 |
| 5500679 | Method and apparatus for deriving a video signal corresponding to a standard definition signal from a high definition signal A standard definition (SD) corresponding image is derived from a high definition (HD) image by performing a vertical line sub-sampling for every field with a ratio of an N:1, where N is an odd number greater than 1. One of the simple sub-sampling methods,... | 03/19/1996 |
| 5486871 | Automatic letterbox detection A video control system, comprises a deflection system having a dimensionally adjustable raster, a circuit for detecting a letterbox video signal source and a circuit for dimensionally controlling the raster of the deflection system responsive to the detec... | 01/23/1996 |
| 5459585 | Apparatus and method of storing image signals An apparatus for storing high definition image signals capable of processing high definition image signals and low definition image signals using the same apparatus. A storage medium is provided with an interface of low definition image signals. High defi... | 10/17/1995 |
| 5442403 | Wide-screen TV signal transmission apparatus A wide-screen TV signal transmission apparatus includes transmitting a wide-screen TV signal generator for generating a wide-screen TV signal source; a scanning line converter for down-converting a wide-screen TV signal with an integer conversion ratio to... | 08/15/1995 |
| 5425050 | Television transmission system using spread spectrum and orthogonal frequency-division multiplex An apparatus for encoding a television production signal for transmission, the television production signal including a first input signal carrying a first class of data and a second input signal carrying a second class of data, the second class data requ... | 06/13/1995 |
| 5410360 | Timing control for injecting a burst and data into a video signal A secondary signal is processed and injected into a primary color video signal. The timing of the subsequent transmission of the secondary signal is controlled by timing signals. The timing signals also control the transmission of a carrier burst prior to... | 04/25/1995 |
| 5386236 | Television screen aspect ratio converting method and the device thereof A television screen aspect ratio converting method and the device thereof which is suitable to display a video signal having a 4:3 screen aspect ratio on a screen having a 16:9 aspect ratio. According to the present invention, scanning lines amounting to ... | 01/31/1995 |
| 5384598 | System and method for frame differencing video compression and decompression with frame rate scalability A system and method of compressing original video data expressed in a plurality of digitally coded frames which enable decompression and playback of resulting compressed video data at one of a plurality of frame rates while maintaining temporal fidelity o... | 01/24/1995 |
| 5353063 | Method and apparatus for processing and/or displaying image data based on control data received with the image data In an image display method and apparatus for displaying image data, it is determined, based upon a control code contained in received image data, whether the image data is whole image data in one frame or partial image data in one frame. When it is determ... | 10/04/1994 |
| 5327236 | Video switcher apparatus for wide screen EDTV signals A compatible special effect signal can be produced without using an encoder or a special signal processor. Each of EDTV signals is divided into a main screen signal and a compensation screen signal. Compensation screen modification circuits modify the spe... | 07/05/1994 |
| 5208668 | Television transmission system including encoder and decoder compatible with current television standards having a 4:3 aspect ratio A television transmission system compatible with current television standard includes a compatible wide aspect ratio television signal containing vacated spatial areas along upper and lower edges of an image defined by lines remaining after lines are sepa... | 05/04/1993 |
| 5126844 | Decomposition and recombination of a wide-aspect ratio image Each line of a wide aspect ratio television signal is divided into a main panel component and an autmentation panel component joined to the main panel component at a stitch point for transmission or storage. At the transmitter, a first signal is extracted... | 06/30/1992 |
| 5084765 | Aspect ratio-improved television system compatible with conventional systems In a wide-aspect television system, apparatus is provided for producing a source television signal for a wide aspect television screen, which source signal has the same horizontal and vertical synchronizing frequencies, but fewer effective scanning lines ... | 01/28/1992 |
| 5068728 | Compatible increased aspect ratio television system The aspect ratio of a television system is increased by reducing the number of active lines in the vertical direction and using those lines to insert information for increasing the width of horizontal lines. The added information is superimposed at or nea... | 11/26/1991 |
| 5067018 | Frequency-division multiplexing arrangement for preventing interference between a main television signal and a helper signal thereof A main signal as the existing television signal and a helper signal for high definition are prepared in a transmitter. The energy of the main signal for a plurality of pixels is sequentially detected by an energy detector constituted by an absolute value ... | 11/19/1991 |
| 5043807 | Three dimensional composite video motion detection A system and method for motion detection in a composite video signal is disclosed. These dimensional (horizontal, vertical and time) analysis is performed on actual picture element content to monitor variations therein. Vector generation, approximation an... | 08/27/1991 |
