Digital phase-locked loop circuit
Accordingly, it is an object of the present invention to provide a new and improved digital PLL circuit which does not exhibit false locking on aliases and has a sufficiently wide range of frequency a... Read More
Inventors: Taga, Noboru; Ishikawa, Tatsuya; Komatsu, Susumu;, Assignee: Kabushiki Kaisha Toshiba (Tokyo, JP) |
Method and apparatus for controlling a voltage controlled oscillator tuning range in a frequency synthesizer
OF THE PREFERRED EMBODIMENT FIG. 1 of the accompanying drawings shows a block diagram of a frequency synthesizer 100 in accordance with a first embodiment of the present invention. A reference freque... Read More
Inventors: Martin, Frederick L.; Carralero, Cesar W.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Chroma lock detector
A chroma lock detector circuit monitors charge pump control signals within a phase-lock loop to determine when two input signals to the phase-lock loop are locked together in phase. An output signal i... Read More
Inventors: Nayebi, Mehrdad; Ngo, Duc;, Assignee: Sony Corporation (Tokyo, JP); Sony Electronics, Inc. (Park Ridge, NJ) |
Color video signal recording and reproducing apparatus providing preferential dropout compensation and time base error correction
In accordance with one aspect of the present invention, the processing of a color video signal before recording is kept to a minimum, and the video signal is so processed that preferential dropout com... Read More
Inventors: Metzger, Lenard M.; Hickok, William Kelsey;, Assignee: Eastman Kodak Company (Rochester, NY) |
Fax processor
Accordingly, it is the general purpose and object of the present invention to provide an autonomous display processor adapted to emulate the functions of a typewriter. Other objects of the invention a... Read More
Inventors: Hartke, David; Sterling, Warren M.;, Assignee: Xerox Corporation (Stamford, CT) |
Copying machine
OF THE INVENTION The copying machine body has a housing 8 in which a reading section A for reading the image data of an original and a recording section B for reproducing the image data of an origina... Read More
Inventors: Moriguchi, Haruhiko; Ohmori, Takashi;, Assignee: Fuji Xerox Co., Ltd. (Tokyo, JP) |
Color television receiver AFPC circuit
Accordingly, it is an object of the present invention to provide a novel color television receiver free from the defects inherent in the prior art. It is another object of the invention to provide a c... Read More
Inventors: Ohmori, Shoji; Matsuzaki, Atsushi; Tominaga, Kiyonori;, Assignee: Sony Corporation (Tokyo, JP) |
Synchronizing circuit for a television receiver
What is claimed is: 1. A synchronizing circuit for a television receiver comprising: a synchronizing-separating stage for deriving line and field synchronizing pulses from a received television signal... Read More
Inventors: Nillesen, Antonius H. H. J.;, Assignee: U.S. Philips Corporation (New York, NY) |
Video signal encoding method
It is therefore an object of the present invention to provide a signal encoding method, a signal encoding apparatus and a signal recording medium in which encoded data of uniform and superior quality ... Read More
Inventors: Kato, Motoki; Kojima, Takashi;, Assignee: Sony Corporation (Tokyo, JP) |
Texture mapping apparatus
It is an object of the present invention to provide a texture mapping apparatus capable of accurately mapping a texture original figure at a high speed. It is another object of the invention to provid... Read More
Inventors: Ueda, Tomoaki;, Assignee: Daikin Industries, Ltd. (JP) |
Single-unit video camera-recorder with automatic control of power supply to light receiver
Accordingly, it is an object of the present invention to provide an arrangement for a VTR, without increasing size of the body of the VTR and its cost, in which a rod member is allowed to project from... Read More
Inventors: Nogo, Yuichiro;, Assignee: Sony Corporation (Tokyo, JP) |
Arrangement for two-dimensional DPCM coding
It is therefore an object of the present invention to provide an arrangement for DPCM coding/decoding which can be realized in a simple manner. The above object is achieved in that a plurality of regi... Read More
Inventors: Starck, Alexander;, Assignee: Siemens Aktiengesellschaft (Berlin and Munich, DE) |
Piecewise recursive vertical filter for PIP feature
I claim: 1. In television filter apparatus receiving sequential pixel value signals during successive line intervals, apparatus for creating filtered signals comprising predetermined combinations of w... Read More
Inventors: Naimpally, Saiprasad V.;, Assignee: North American Philips Consumer Electronics Corp. (Knoxville, TN) |
Television display system with increased field frequency
We claim: 1. A television receiver cmprising: scan converter means including field-memory means supplied with an input video signal of an interlaced television system having a selected plurality of fi... Read More
Inventors: Okada, Takashi; Ikeda, Yasunari;, Assignee: Sony Corporation (Tokyo, JP) |
Digital time-base corrector for special motion reproduction by helical-scan VTR
OF THE INVENTION Referring to FIG. 1, a digital TBC 10 according to one embodiment of this invention is for use in a special-motion reproduction system accompanied by a helical-scan VTR. In the helic... Read More
Inventors: Mizukami, Mineo; Konishi, Tatsuo;, Assignee: Nippon Electric Co., Ltd. (Tokyo, JP) |
Method and apparatus for recording and retrieving video information in two modes on a single laser recording disc
In my thinking, there are certain circumstances under which it is desirable to combine the advantages on one laser disc of longer playing time, achievable with constant linear velocity, with the abili... Read More
Inventors: Sontheimer, Carl G.;, Assignee: |
Shift register
It is therefore an object of the present invention to provide a shift register which is made simple in mechanism and inexpensive by use of a RAM of great capacity and which is capable of performing hi... Read More
Inventors: Yamada, Kunihiro;, Assignee: Ricoh Company, Ltd. (Tokyo, JP) |
Calibration of a plurality of excitation sources for an instrumentation system
A calibration system for calibrating a plurality of excitation sources for an instrumentation system according to the present invention includes a single adjustable reference source with a single vari... Read More
Inventors: Hubbard, Evan A.;, Assignee: National Instruments Corporation (Austin, TX) |
Video delivery system and method for displaying indexing slider bar on the subscriber video screen
The present invention comprises a system and method which displays a graphical icon, such as a slider bar, on a subscriber's television or display unit for indexing to different positions in a video s... Read More
Inventors: Moeller, Chris; DeMoney, Mike; Goedman, Rob;, Assignee: Thompson Consumer Electronics Inc. (Indianapolis, IN); Sun Microsystems Inc. (Palo Alto, CA) |
Method and apparatus for stop-motion playback of a record disc
The present invention is embodied in a record medium for recording a specially-formatted composite signal that includes both a video signal, representative of a video frame, and a corresponding audio ... Read More
Inventors: Dakin, Wayne R.;, Assignee: Discovision Associates (Costa Mesa, CA) |
Circuit for reducing intermodulation distortion in a frequency-modulated signal
Accordingly, it is a general object of the present invention to provide a novel and useful intermodulation distortion reducing circuit for reducing intermodulation distortion in a frequency-modulated ... Read More
Inventors: Watanabe, Yasuaki;, Assignee: Victor Company of Japan, Ltd. (Yokohama, JP) |
Video matte generator
p A preferred embodiment of the present invention is a matte generator for generating a video signal representative of a matte having a uniform color, comprising input means for generating signals rep... Read More
Inventors: McFetridge, Grant T.;, Assignee: The Grass Valley Group, Inc. (Grass Valley, CA) |
Jitter correction circuit
A primary object of the present invention is to provide a jitter correction circuit of a relatively simple configuration for suppressing a jitter. According to an embodiment of the invention a jitter ... Read More
Inventors: Yanase, Shuji;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Motion detection between even and odd fields within 2:1 interlaced television standard
A general object of the present invention is to provide a method and apparatus for detecting images in motion between even and odd fields within a two-to-one interlaced television signal in a manner o... Read More
Inventors: Faroudja, Yves C.; Xu, Dong; Swartz, Peter;, Assignee: |
Method and apparatus for capturing video images
The present invention provides method and apparatus for acquiring video signals having different video formats, determining those formats and their associated parameters, and then optionally convertin... Read More
Inventors: Pyle, Harry S.; Bahr, Norman H.; Nietfeld, Paul G.;, Assignee: Image Data Corporation (San Antonio, TX) |
Ghost-cancelation reference signal acquisition circuitry, as for TV receiver or video recorder
OF PREFERRED EMBODIMENTS The term "television set" is used in this specification to describe a television receiver front end with accompanying kinescope, power supply for a kinescope, deflection circ... Read More
Inventors: Patel, Chandrakant B.; Yang, Jian;, Assignee: Samsung Electronics Co., Ltd. (Kyungki-do, KR) |
Time base correction of color video signal from playback apparatus
Accordingly, it is an object of this invention to provide an improved arrangement for correcting or compensating for time base errors in a color video signal particularly when the latter has been reco... Read More
Inventors: Yoshinaka, Tadaaki;, Assignee: Sony Corporation (Tokyo, JP) |
Color synchronizing circuit
Briefly described, the present invention comprises a color synchronizing circuit including a phase locked loop, wherein a frequency variable range (.DELTA.f) of a voltage controlled oscillator is sele... Read More
Inventors: Hosoya, Nobukazu;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Speech scrambler
In view of the above shortcomings of the prior art, an object of the present invention is to provide a speech scrambler which makes it difficult to distinguish silence and fricative sounds and produce... Read More
Inventors: Matsunaga, Akira;, Assignee: Kokusai Denshin Denwa Kabushiki Kaisha (Tokyo, JP) |
Vertical synchronizing pulse generating circuit
What we claim are: 1. A vertical synchronizing pulse generator comprising: a first vertical synchronizing signal separation means (VS) for separating a vertical synchronizing signal included in a comp... Read More
Inventors: Kishi, Hiroyasu; Arai, Hiromi;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
TV Signal 
