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7719593 |
Variable frame rate imaging
An image processing apparatus for processing an image signal, including: an operation processing section performing an operation according to a detected value of the image signal; a latch signal...
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7557833 |
Image pick-up device using an image signal of a variable frame-rate
A signal-recording-and-reproducing portion records an image signal DVb of a variable frame-rate picked-up image generated by an image signal generation portion. When instructed to reproduce the...
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7557834 |
Image pickup apparatus and synchronization signal generating apparatus
An image signal generation portion 11 generates an image signal of a variable frame-rate picked-up image. A signal generation control portion 24 drives the image signal generation portion 11 and...
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6756996 |
Obtaining a high refresh rate display using a low bandwidth digital interface
A sequence of input groups, each input group containing a number of input pixels, is received. A sequence of output frames is provided, where each output frame contains a number of output pixels to...
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6744815 |
Method for synchronizing audio and video streams
In a combined audio and video encoding system, the encoding system receiving a stream of video samples and a stream of audio samples, the encoding system producing an encoded video stream from the...
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6546156 |
Image processing device
An image processing device having an improved image processing speed and capable of detecting an object at high speed. Where frames are thinned out for real-time processing during frame processing...
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6356317 |
Image processor
A frame memory is provided which has five fields each having N slots, and three additional slots. Each slot has a storage capacity to store eight image lines. Four fields of the five fields serve...
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6356309 |
Video coding device and video transmission system using the same, quantization control method and average throughput calculation method used therein
Video data coded in a coding device 12 is temporarily stored in a temporary buffer 13 before transmitted to a transmission buffer 171. A frame dropping/quantization control device 16 cancels the...
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6353632 |
Video processing system with real time program duration compression and expansion
The running real time length of combined video and audio signal programs is shortened or lengthened by deleting or repeating individual fields or frames and corresponding amounts of audio segments....
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6304297 |
Method and apparatus for manipulating display of update rate
A method and apparatus for manipulating the display update rate of video signals to minimize the adverse visual effects caused by adding or deleting frames begins by determining a need value for...
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6219157 |
Image coding apparatus
An image coding apparatus comprises a divider for dividing an image into a plurality of coding blocks overlapped to each other, and a coder for coding them for each of the coding blocks divided by...
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6118491 |
System and method for enforcing interlaced field synchronization in the presence of broken alternation in an MPEG video datastream
A system and method for synchronizing a decoded, interlaced-field data stream with an interlaced field display. A system for displaying an MPEG encoded data stream includes an MPEG decoder which...
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6115499 |
Repeat field detection using checkerboard pattern
The present invention is directed to a method for encoding an uncompressed digital video bit stream. The video bit stream comprises successive frames, each of which includes one or more odd fields...
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6049570 |
Picture coder
A picture coder decodes P frames without having to wait for the next I frame even if a data loss occurs, and ensures quick recovery from degraded picture quality. The picture coder, which controls...
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5923385 |
Processing system with single-buffered display capture
A method and apparatus for single-buffered display capture which eliminates a "tearing" problem inherent in certain conventional video display techniques. A video signal including a sequence of...
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5914755 |
Image transmission apparatus
An image transmission apparatus of this invention generates an image signal for one field at a first rate, forms a first transmission image signal on the basis of the generated image signal,...
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5872726 |
Memory control apparatus for compression and expansion of data
A memory control apparatus for compression or expansion of data includes an input end for receiving a signal indicating the data rate of the original data and a second signal indicating the data...
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5488422 |
Video scan converter including the modification of spatially interpolated pixels as a function of temporal detail and motion
A video scan converter includes an input for receiving a video signal at a first scan rate, an output for providing a video signal at a second scan rate and a main path leading between the input...
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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...
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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...
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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...
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5347314 |
Video scan converter
A video scan converter includes an input for receiving a video signal at a first scan rate, an output for providing a video signal at a second scan rate and a main path leading between the input...
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5321508 |
Video image data recording apparatus
A video image data decoding apparatus includes a pair of buffer memories for storing decoded intra coded picture data or forward prediction coded picture data, a switch circuit for selecting either...
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5315327 |
High scanning rate to standard scanning rate television signal converter with smooth moving edge conversion
Odd fields of a high speed television signal within even field intervals of a television signal having a reference frequency are readout from field memories 6, 7 with the time base of the odd...
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5313303 |
Aspect ratio control for picture overlays
A picture overlay system assures proper image aspect ratios for picture overlays. The system comprises a video memory and a control circuit for writing and reading information from a video signal...
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5283659 |
Apparatus and method of high vision signal recording using expansion techniques and digital drop-out compensation
An apparatus in which a high vision signal having 1125 horizontal lines per frame is divided into three signals and three channel signals each having 375 horizontal lines per frame are obtained...
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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...
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5159460 |
Video signal recording apparatus that converts high definition video signals into signals usable with conventional television systems
A video signal recording method and apparatus in which a video signal for a high definition television system is converted into a video signal for a current television system and recorded on record...
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5146325 |
Video signal decompression apparatus for independently compressed even and odd field data
In a video decompression system for decompressing compressed image data wherein odd and even fields of video signal are independently compressed in sequences of intraframe and interframe...
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5057921 |
Process and device for temporal image interpolation, with corrected movement compensation
A process, and a corresponding device, for temporal image interpolation with corrected movement compensation, respectively use a consistency analysis step or circuit to analyse the defects in a...
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4743973 |
Encoding method for facsimile signal
An encoding method for facsimile signal which is characterized by encoding data of a line selected out of the all lines of input facsimile signals in a manner of skipping over a predetermined...
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4620225 |
System for TV transmission
A TV transmission system having an increased picture quality. Depending on whether the picture to be transmitted is a still picture or a motion picture, the TV signals are derived either from the...
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4589110 |
Signal processor (system) for reducing bandwidth and for multiplexing a plurality of signals onto a single communications link
The bandwidth required for a regularly occurring signal, such as a television signal, as received from a signal source can be substantially reduced by not transmitting each and every one of the...
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4060832 |
Digit rate reducing method in video signal transmission
A digit rate reducing method in the transmission of video-telephone signals, wherein each frame is scanned by means of two consecutive fields comprising each the lines of same parity, each frame...
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3982063 |
Methods and apparatus for reducing the bandwidth of a video signal
Alternate lines of a 526 line video signal are time-stretched and transmitted over a transmission channel of limited bandwidth. At the receiver, the lines are compressed back to their original...
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3851096 |
SURVEILLANCE SYSTEM
A charge transfer device moving target indicator system is disclosed. The system includes a photosensitive imager and an analog delay line for storing one frame of video information generated by...
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3697682 |
VIDEO SIGNAL PROCESSING
A television picture is scanned such that each frame of the resultant video signal comprises a succession of N interlaced fields. Each field is then delayed by a time equal to the field scan time...
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3359365 |
Recording and reproducing system
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3096398 |
Picture communication systems
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3051778 |
Sequential scan television with line interpolation
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2906816 |
Method and apparatus for reducing television bandwidth
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