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7489798 |
Method and apparatus for detecting a watermark in a signal
The invention relates to a system for detecting a watermark using informed detection. A first signal potentially having a watermark embedded is received ( 601 ) as is a second signal corresponding...
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7295680 |
Embedding and detecting digital watermark in image
An apparatus for embedding digital watermark information in an image, includes an image divider dividing the image into a plurality of partial images; and an embedder embedding in each of the...
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7197164 |
Time-varying video watermark
A digital watermark embedder reduces a watermark signal as a function of time varying properties of video such that a watermark that would otherwise be static over frames is selectively reduced to...
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7072493 |
Robust and stealthy video watermarking into regions of successive frames
A technology is described herein for the protection of rights in the content of a video sequence. In one example the technology embeds an information pattern in one or more regions of a video...
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6975743 |
Robust and stealthy video watermarking into regions of successive frames
An implementation of a technology is described herein for the protection of rights in the content of a video sequence. This technology further generally relates to a technology facilitating...
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6965729 |
Numbering of video objects and cells
A method of recording an encoded bit stream, said encoded bit stream representing a plurality of video objects comprising a sequence of cells together constituting a part of an MPEG2 Program...
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6961444 |
Time and object based masking for video watermarking
The disclosure describes a method of embedding a digital watermark into a video signal using a time based perceptual mask such that the digital watermark is substantially imperceptible in the video...
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6771795 |
Spatio-temporal channel for image watermarks or data
A channel is inserted into a sequence of frames for an image, by varying one or more display characteristics of the resulting image across the display. The watermark and other data channel may be...
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6731677 |
Method and apparatus for carrying digital data as analog video
An interface, e.g., a modem-like interface for converting a digital information signal into an analog signal for use within an analog television studio infrastructure. Namely, the present invention...
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6563936 |
Spatio-temporal channel for images employing a watermark and its complement
A channel is inserted into a sequence of frames for an image, by varying one or more display characteristics across a display in accordance with a spatio-temporal pattern applied to, for example,...
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6456726 |
Methods and apparatus for multi-layer data hiding
A data hiding system and method for providing a method of embedding multiple layers of hidden data into multimedia data. First, a media unit of the multimedia data is evaluated to determine an...
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6370272 |
Multiple frame data hiding method and data detection method
Data hidden in a plurality of contents is protected from illegal access by a third party. An embedding process is performed by using a frame pattern (mark) that is composed of multiple embedded...
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6339449 |
Method and device for superimposing additional information on a video signal
An additional information signal is superimposed on a video signal at a very low level so that it does not stand out on the reproduced image. Spectral spreading code sequences are generated...
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6008857 |
Methods of and apparatus for encoding and decoding digital data for representation in a video frame
Digital data comprised of bytes formed of a predetermined number of data bits are encoded for representation in a video frame. Each byte of digital data, or a portion thereof, is represented in a...
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5880769 |
Interactive smart card system for integrating the provision of remote and local services
The present invention includes methods and apparatus for increasing the efficiency of remote service transactions. According to the present invention, a smart card includes optics for receiving...
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5838840 |
Inspection device using a field mode video camera with interpolation to replace missing pixels
A video inspection device using a field mode CCD camera. In order to inspect the printing on a moving web, a field mode CCD camera is provided with a zoom lens and strobe light. The image obtained...
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5737024 |
System for storing computer data using a video tape recorder
A system for converting user data between a computer data format and an NTSC format allows a video tape recorder (VTR) to be used as a data storage system. A buffer organizes the user data into...
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5731841 |
High performance data tuner for video systems
A tuner specifically adapted for recovery of a data signal injected into a video signal and then subsequently transmitted over a television channel or cable is disclosed. The tuner includes an IF...
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5666168 |
System for transmitting facsimile data in the upper vestigial chrominance sideband of a video signal
The instant application is directed to a cable facsimile machine which implements the upper vestigial chrominance sideband of a standard video signal for data transmission. Signal processors for...
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5652626 |
Image processing apparatus using pattern generating circuits to process a color image
In the apparatus for processing a color image, a data signal representing another information differs from the color image is generated by a generating means. The another information is embedded...
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5347315 |
Modular encoder for generating a digital multiplex signal and decoder for processing such a signal
A X-MAC encoder enables a plurality of components to be encoded, each having a sequence of packets, with the packets being distributed in successive bursts each occupying a predetermined fraction...
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4931870 |
Rapid access teletext decoder arrangement
A teletext decoder includes a background or buffer memory operating as a first-in, first-out (FIFO) memory. The buffer memory is used for storing a large number of teletext pages. A given video...
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4862268 |
Addressable cable television control system with video format data transmission
An addressable cable television control-system controls television program and data signal transmission from a central station to a plurality of user stations. The data signals include both control...
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RE32776 |
Piggy back row grabbing system
A common channel video communication system for providing a piggy back transmission television field comprising a plurality of television video scan lines over the common channel. The television...
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4719510 |
Teletext decoders
A teletext decoder for full-channel operation includes a "row-found" register in which a flag is put for each data row which is actually present in a selected teletext page that is received and...
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4636858 |
Extracting digital data from a bus and multiplexing it with a video signal
A television video data instrumentation recording system is coupled to a Bus Monitor/Video Encoder to incorporate a digital data recording capability within the normal video signal recording...
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RE32326 |
Row grabbing system
A real time frame grabbing system for substantially instantaneously providing a continuous video display or a selectable predetermined video frame of information on a video display means from...
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4597005 |
Digital color photographic image video display system
In a color photographic video data conversion system digital data representing each of three primary color components of a pixel is converted (i.e. encoded) to digital data comprising luminance...
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RE31863 |
Row grabbing system
A real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectably predetermined video frame of information on a video display means from...
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4266244 |
System for detecting the initial point of a digital signal in a composite digital signal reproducing system
A system for detecting the initial point of a digital signal is used in a system for reproducing a composite digital signal which is composed of a composite synchronizing signal having horizontal...
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4135213 |
Row grabbing video display terminal having local programmable control thereof
A real time frame grabbing video display terminal for substantially instantaneously providing a continuous direct video display of a selectable predetermined video frame of informatin on a video...
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4104681 |
Interleaved processor and cable head
An improved real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectable predetermined video frame of information on a video display means...
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4054911 |
Information retrieval system for providing downstream loading of remote data and processing control thereof
An information retrieval system capable of capturing packets or rows of video displayable data and/or control program instructions continuously transmitted in a common predetermined format, such as...
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3875329 |
FRAME GRABBING SYSTEM
A real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectable predetermined video display of information and a video display means from a...
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3745240 |
TELEVISION TRANSMISSION METHODS AND APPARATUS
A television system transmits a general viewer television program and special viewer program on a common channel. As the fields of the general viewer television program are fed to the transmitter...
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3743767 |
TRANSMITTER AND RECEIVER FOR THE TRANSMISSION OF DIGITAL DATA OVER STANDARD TELEVISION CHANNELS
Apparatus and a method for the economical distribution of digital data to a number of data terminals using standard commercial television channels including a digital transmitter for transmitting...
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3730986 |
TELEVISION TRANSMISSION SYSTEM FOR TWO CLASSES OF INFORMATION
A television transmission system normally transmits fields of general viewer information which is interspersed with cuts. After at least some of the cuts a field of special viewer information is...
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