Matches 251 - 300 out of 421 < 1 2 3 4 5 6 7 8 9 >
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5689309 Control circuit for mixing two video signals  
A mixer control circuit generates content control signals which are used by a mixer circuit to control the content of an output signal. The output signal will include either an analog signal, a...
5675392 Mixer with common-mode noise rejection  
A mixer circuit with common-mode noise rejection combines input signals into a single output signal in a predetermined ratio and reduces the effect of noise within the single output signal. The...
5675393 Image processing apparatus with generating unit for generating image data and decoding unit for decoding image data  
An image processing apparatus including an input unit for inputting a plurality of coded image data from a plurality of external devices, a generating unit for generating image data for one image...
5668605 Object keying in video images based on distance from camera  
A method for separating a first image into two or more portions, such as foreground and background portions, based on the distance of the portions from a camera. The method includes detecting a...
5657095 System for Combining image signals  
A system for combining images has VTRs for storing a plurality of image signals and a signal generator for generating a key signal representing a combining position in each of the image signals....
5638112 Hybrid analog/digital STB  
A hybrid analog/digital STB includes a tuner supplying respective analog and digital television signal processing paths. The analog processing path provides demodulated composite analog video and...
5638133 Method of creating video effects by use of keyframes  
A video effect is created with a video processing machine having a plurality of functions, each of which has a state that is selectively variable in response to change in an associated function...
5633688 Image superimposing apparatus for superimposing the encoded color televison signal with the external composite video signal  
An external sync image superimposing apparatus synchronizing an analog video signal with digital image data is provided by an apparatus which includes a sync separator for separating an external...
5633654 Computer-implemented process and computer system for raster displaying video data using foreground and background commands  
Video data for two or more video streams are processed by a single background command list containing one or more background commands and a single foreground command list containing one or more...
5623317 Alias detection and avoidance process used in the processing of video signals  
A method and apparatus for combining video signals with key signals whilst maintaining the integrity of the video signal and minimizing the effect of alias components. An analyser detects whether...
5615338 System for simultaneously displaying video signal from second video channel and video signal generated at that site or video signal received from first channel  
In a video conferencing system including stations at a plurality of different sites, and in which system first and second video channels are simultaneously displayed at each site station on a...
5608465 Video mixer control signal generator modular element  
With an elemental approach for producing a wipe surface, one or more identical wipe surface generator modular elements are cascaded together. Each element produces an elementary wipe surface, and...
5598222 Method and apparatus for decoding multiple video bitstreams using a common memory  
Implementation efficient video decoder for decoding multiple bitstreams to provide picture-in-picture capability in a digital video display device is disclosed. The video decoder includes a full...
5594507 Compressed digital overlay controller and method for MPEG type video signal  
A controller, in accordance with a preferred embodiment provides, in a specified region of first television picture generated by a first digitally compressed video signal, an overlay of a second...
5589850 Apparatus for converting two dimensional pixel image into one-dimensional pixel array  
An converter apparatus to convert the (X, Y) coordinate of the two-dimensional screen position of a pixel to a linear address. The converter apparatus, which can be used with a variety of video...
5583536 Method and apparatus for analog video merging and key detection  
Monochrome and color video mixers mix an overlay image with a default image to form a composite image to be displayed on a computer display. The monochrome video mixer includes a summing circuit...
5579028 Apparatus for mixing play video signal with graphics video signal  
An apparatus for mixing a play video signal derived by playing a recording medium with a graphics video signal derived on the basis of data processing. A video selecting signal generated on the...
5574510 Multi-component video signal mixer  
A video signal mixing device for mixing a first video signal including at least a mutually related first signal component and second signal component and a second video signal which is made up of...
5568204 Digital video switching apparatus  
A digital video switching apparatus is disclosed in which a 4:2:2 digital video signal and a 4:4:4 digital video signal supplied at input terminals are selected by switching by a matrix switcher...
5563665 Video signal controller for use with a multi-sync monitor for displaying a plurality of different types of video signals  
A video signal controller is used with a dual sync monitor of a digital computer. The video signal controller has a tuner to generate conventional television signals. The signals from the tuner and...
5559562 MPEG editor method and apparatus  
A method and apparatus for editing MPEG formatted image representative electrical signals provides a first decoder and storage for storing components of a first MPEG formatted stream of image data,...
5539475 Method of and apparatus for deriving a key signal from a digital video signal  
In deriving a key signal for a digital mixer from an input video signal, most values of the key signal are derived by a clip and gain circuit. However, in the special case where the normalized...
5534942 On screen display arrangement for digital video signal processing system  
A digital video signal processing system receives encoded packets of data representing video image information in compressed form. A video decoder and an associated video RAM are used to decode and...
5534944 Method of splicing MPEG encoded video  
A method of splicing two compressed video signals which have been encoded according to the standard adopted by the Moving Picture Experts Group (MPEG) determines an amount of null information that...
5528315 Image processing memory integrated circuit  
An image processing memory integrated circuit used for a signal processing circuit is disclosed. In the bidirectional prediction, pixel values for two-frame images are stored in a memory cell...
5526017 Analog image signal processor for a multimedia system  
An apparatus for transmitting an analog image signal representing an image over a bus including a driver circuit which receives a single ended analog image signal from a media source and provides a...
5523791 Method and apparatus for applying overlay images  
Apparatus for use with standard television (TV) for superimposing images, captions, titles, or other information over the television scene. Synchronization of the superimposed images with the...
5517253 Multi-source video synchronization  
A system for synchronizing input video signals from a plurality of video sources includes a plurality of buffering units (B1 . . . BN) each coupled to receive a respective one of the input video...
5502512 Apparatus and method for digital video and audio processing a plurality of pictures and sounds  
An apparatus for digital video and audio processing including information input and output processing devices for input, output, and processing of pictures and sounds. An information transmission...
5499054 Character and pattern mixing apparatus for use in a video equipment  
A video mixing apparatus for use in a video equipment capable of providing a mixed image luminance signal comprises a synchronization ("sync") separator for providing a horizontal sync, vertical...
5499039 Microkeyer: a microcomputer broadcast video overlay device and method  
Broadcast standard format video signals such as that adopted by the National Television Standards Committee (NTSC) or the European standard format of Phase Alternating Line (PAL) and some broadcast...
5488674 Method for fusing images and apparatus therefor  
A method for fusing two or more source images to form a composite image with extended information content which may be color augmented and apparatus for forming the composite image from the source...
5481315 Television receiver with multiple picture screen at appropriate aspect ratio  
A television receiver has horizontal reducing filter and a vertical reducing filter independently responsive to a first filter control signal and a second filter control signal for reducing...
5459529 Video processing for composite images  
A video image composition system and method in which the artist can move an insert cut out of a foreground image relative to a background image while continuously observing on the monitor the...
5453796 Signal swap apparatus for a television receiver having an HDTV main picture signal processor and an NTSC Pix-in-Pix signal processor  
A television receiver system having PIP capability includes two NTSC tuners and signal processing arrangements, and an HDTV tuner and signal processing arrangement. In order to accomplish a CHANNEL...
5448307 System for combining multiple-format multiple-source video signals  
The system generates a composite image on a pixel-by-pixel basis by selectively mapping source pixels provided by video sources of different video formats onto destination pixels in the composite...
5438356 Accounting system for multimedia communications system  
In an accounting system for a multimedia communications system, an additional information storage unit stores additional information to be supplied to subscriber terminals in the multimedia...
5436672 Video processing system for modifying a zone in successive images  
A method and an apparatus for substituting a representation of a target, identified by a set of points of interest stored in a memory, with a matching representation of a predetermined stored...
5434676 Apparatus for mixing video signals having different numbers of lines  
A video signal mixing apparatus for mixing a playback composite video signal produced by playing a recording medium and a graphics composite video signal generated on the basis of video data read...
5426467 Video special effect processor  
In a video special effect processor for performing video special effect processing on a digital video signal, a digital video signal is transmitted as serial digital data in a predetermined format,...
5420644 Color smear correcting apparatus  
In the color smear correcting apparatus of the present invention, the states of a parent picture and son picture of a video signal from a frame sequential imaging apparatus are discriminated and...
5408274 Method and apparatus for compositing compressed video data  
Inverse motion compensating devices are used to transform motion compensated transform domain video signals to corresponding transform domain video signals. A compositing mechanism receives the...
5404177 Double-picture type television receiver  
A double-picture type television receiver for displaying two different pictures on its screen. The television receiver is equipped with an image memory having a capacity required for storing a...
5361101 Preamplifier for multimedia display  
An RGB preamplifier for a video display includes respective multipliers independently operable for adjusting the contrast of input primary and secondary video signals. The contrast adjusted video...
5351129 Video multiplexor-encoder and decoder-converter  
A video multiplexor-encoder and decoder-converter includes a video multiplexor and encoder for selectively receiving, time-division multiplexing and encoding multiple video signals representing...
5345313 Image editing system for taking a background and inserting part of an image therein  
A system and method for editing digital images includes a processor for storing a digital image of an object and a background. The periphery, or edge, of the object has a first hue, and the...
5343249 Apparatus for preventing the simultaneous and overlapping display of characters on a television receiver monitor  
An apparatus for preventing the simultaneous display and overlapping of teletext (TTX) characters and on-screen display (OSD) characters on a TV receiver monitor. The apparatus includes switching...
5331417 System and method of displaying a plurality of digital video images  
A system and method of digital video editing simultaneously displays a plurality of source video windows on a screen, each window showing a digital source video stream. The user may select among...
5329309 Method of integrating format material and an interlace scan format signal  
Method of integrating 30 or 60 frame/s format material and 60 field/s 2:1 interlace scan format digital video signal to produce a 60 field/s 2:1 interlace scan format digital video signal by...
5317399 Image reproducing apparatus capable of freezing a displayed image  
Successively transmitted images are stored in frame memories the contents of which are displayed. The user can freeze a desired image in order to view it for a prolonged period of time. When the...
Matches 251 - 300 out of 421 < 1 2 3 4 5 6 7 8 9 >