Abstract: Motion video is represented by digital signals. The digital signals can be compressed by coding to reduce bitspace. Noise in the signal, however, reduces the efficiency of coding. The present invention is a system and method for reducing noise in video signals by filtering. The signal for the current frame is weightedly averaged with signals for a future and prior frame. The future and prior frames are given less weight as they differ more from the current frame. When motion compensation information is available, the motion compensated future and prior frames can be used for averaging, further improving filtering.

Abstract: An image display apparatus for displaying an image and characters superposed on the image comprising a synchronizing signal dividing unit for dividing the frequency of an input synchronizing signal to generate a divided synchronizing signal, a character generating unit for generating, in response to the divided synchronizing signal, characters to be superposed on the image, and a character speed converting unit for converting the speed of the characters generated by the character generating unit, thereby the number of characters outputted from the character speed converting means in one synchronization period is made to be substantially constant regardless of the frequency of the input synchronizing signal.

Abstract: The apparatus includes first, second and third connectors, a control signal generator (5.11) and first and second switches (5.9, 5.10). The first and second connectors each have a signal input terminal, a signal output terminal and a control signal terminal. The third connector has a signal input terminal (5.7) and eventually a control signal terminal (5.8). The first and second switching means each have first (a), second (b) and third (c) terminals, the first terminal (a) of the first switches (5.9) being coupled to the signal output terminal (5.5) of the second connector, the second terminal (b) of the first switches (5.9) being coupled to the signal input terminal (5.1) of the first connector, the first terminal (a) of the second switching means (5.10) being coupled to the signal output terminal (5.2) of the first connector, the second terminal (b) of the second switching means (5.10) being coupled to the signal input terminal (5.4) of the second connector. The first and second switches (5.9, 5.

Abstract: A camcorder equipped with a function for correcting a brightness on sides of the camcorder screen which automatically compensates the brightness on the sides of screen is described.

Abstract: A Y/C separation circuit includes a first adder by which a carrier-multiplexed composite video signal is produced by multiplexing a color sub-carrier signal which is in synchronization with a color burst signal on a composite video signal during a vertical blanking period. The carrier-multiplexed composite video signal inputted to a 1H delay line and outputted from the 1H delay line. The carrier-multiplexed composite video signals at the input and the output of the 1H delay line are inputted to a second adder, and a subtracter, respectively. A luminance signal component and a chrominance signal component are respectively outputted from the second adder and the subtracter.

Abstract: In a composite video system having a digitized composite video signal to be modified, wherein the digitized video signal has discrete values having sampling frequency Nf.sub.s where N is an integer greater than one, and f.sub.s is the color subcarrier frequency of the video input signal, a method and apparatus for utilizing look-up tables to create special color effects without decoding to luminance and chrominance, the method having the steps of storing in memory N sets of predetermined values such that the sets are addressable in a desired predetermined order and such that the predetermined values relate to a discrete equal distant points on a color subcarrier frequency wave corresponding to a desired color, retrieving from memory the stored values at a rate Nf.sub.s such that the N sets are addressed in the predetermined order, and using the digitized composite video signal to address said memory, to produce a digitized video output signal with different values, as desired.

Abstract: Disclosed is a mixing circuit. A still-picture signal (S) input from a still-picture signal input terminal and a motion-picture signal (M) input from a motion-picture signal input terminal are added together by a first adder, and the resultant signal is converted to (S+M)/2 by a first 1-bit right shifter, and to (S+M)/4 by a 2-bit right shifter. One of the outputs of those shifters is selected by a first multiplexer in accordance with shift signals CI2-CI0. The still-picture signal (S) and motion-picture signal (M) are also respectively converted by a second 1-bit right shifter and a third 1-bit right shifter to S/2 and M/2, one of which or "O" is selected by a second multiplexer in accordance with the shift signals CI2-CI0. The outputs of the first and second multiplexers are added together by a second adder to be input to a third multiplexer. The output of the third multiplexer is determined by the shift signals CI2-CI0, and is output from an output terminal.

Abstract: A display device using laser comprises an input path for a composite video signal, a memory for storing the video signal by picture regions divided according to the size of picture, a controller for controlling the scanning position and the division of picture regions, a semiconductor laser for reading out R, G and B signals from the memory, and then scanning laser beams, and a scanning controller for controlling the path of a laser beam. The device displays an optical signal on a wall or large white surface without an additional cathode ray tube and adjusts screen size by controlling the distance between the device and the display surface.

Abstract: A channel selecting apparatus includes a broadcast signal selector provided with a plurality of channels corresponding to respective broadcast stations for selecting a channel among the plurality of channels, channel selecting keys for directly selecting one channel among regular channels, a channel increasing key for establishing at least one auxiliary channel other than the regular channels, a channel shift key for selecting one of the regular channels while sequentially shifting a current channel among the regular channels and the auxiliary channels for generating instructions corresponding to respective keys whenever the channel selecting key, the channel increasing key and the channel shift key are operated, a storage device for storing a plurality of regular channel data corresponding to the respective regular channel auxiliary channel data other than the regular channel data, and a controller for defining storage areas and for controlling the channel shift operation by the channel selector while referr

Abstract: A circuit is provided for precorrecting an aural carrier signal in a common amplifier system in a television transmitter wherein an aural frequency signal and a visual signal are commonly amplified. The precorrecting serves to minimize cross-modulation distortion of the aural carrier caused by the common amplification. A visual carrier signal is modulated by a video baseband signal to provide a modulated video signal from which there is provided a sampled video signal. This sampled video signal is supplied to an aural corrector which provides from the sampled video signal a phase correction signal and an amplitude correction signal. The phase correction signal and amplitude correction signal are used to modulate an aural carrier signal to provide a precorrected aural signal which is then combined with the video signal to provide a combined signal.

Abstract: A new and improved remote audio monitoring system is disclosed comprising an FM transmitter, and one or more remote cordless FM receiving terminals. The transmitter is coupled to the audio output channel of a cable or satellite television descrambler box so as to rebroadcast the audio signal to the remote FM receiving terminals. As a result, the T.V. sound track may be listened to at selected remote locations without the need for hard wired connections.

Abstract: Based on a series of video data for producing one or a plurality of text displaying images and a series of accompaniment MIDI data, a signal processing circuit (1) prepares a quasi video signal containing the two kinds of data as arranged in alternating fields or in alternating pluralities of fields in time series and identification data for identifying the series of video data and MIDI data. The quasi video signal is transmitted to terminal units (5) for users via a CATV or like transmission path. The terminal unit extracts from the quasi video signal fields of MIDI data and video data containing identification data specifying a piece of music selected by the user, and reproduces the accompaniment of the selected piece and displays the text thereof based on the extracted data.

Abstract: A television receiver includes a microprocessor, a switched mode power supply and a storage capacitor. The storage capacitor supplies standby power to the microprocessor when the television receiver is off and the switched mode power supply is disabled. While the television receiver is off, the microprocessor monitors the capacitor voltage and turns on the switched mode power supply to recharge the capacitor when its voltage level falls to a predetermined minimum. The microprocessor turns off the switched mode power supply when the capacitor voltage indicates that the capacitor has been recharged.

Abstract: A luminance signal generating apparatus including a first CCD device, and a second CCD device disposed at a position obliquely displaced relative to a spatial position of the first CCD device, an interpolating circuit for interpolating an output from the second CCD device. A low band luminance signal generating circuit generates a low band luminance signal on the basis of an output from the interpolating circuit. A high band luminance signal generating circuit generates a high band luminance signal on the basis of output signals from the first and second CCD devices and the interpolation signal from the interpolating circuit. A luminance signal generating circuit generates a luminance signal on the basis of the low band luminance signal and the high band luminance signal from the low band luminance signal generating circuit and the high band luminance generating circuit.

Abstract: A universal remote control device which is programmed to operate a variety of consumer products is disclosed. The device is connected over a bidirectional link to either a cable converter or a telephone interface for receiving programming information. A touch screen display is employed on the programmable remote control device for displaying icons of functions to be selected. By selecting a particular displayed icon, a command can be decoded and sent via an infrared link to one or more appliances. Infrared codes for operating a virtually unlimited number of devices can be supplied to the device over the bidirectional communications link. Further, a provision is provided to permit a telephone connection to be set up between the user's home and a facility advertising products or services over a cable television broadcast. The touch screen display will permit the actual display of these advertisements as messages received from the cable head end system.

Abstract: A television receiver includes a teletext decoder which is adapted to check whether a keyword entered by the user occurs in a teletext cycle. The teletext pages with the searched keyword, or their page numbers, are identified and stored for later display or selection. The receiver has arrow keys for selecting the keyword on the display screen so that an alphabetical keyboard is not necessary. The receiver also includes a non-volatile memory in which a personal index of keywords can be programmed.

Abstract: If it is determined that a current time when a power switch is operated manually is equal to or close to a reservation time indicated by preset reservation time data, a power source automatically starts supplying a power source current to individual circuits of a broadcasting receiving apparatus main body. Otherwise, supply of a power source current to the individual circuits is not performed. This prevents a receiving unit from unnecessarily receiving a broadcasting electric wave. When completion of broadcasting of all broadcasting contents of a broadcasting program is detected, the power source stops supplying the power source current to the individual circuits of the broadcasting receiving apparatus main body. This also prevents the receiving unit from unnecessarily receiving a broadcasting electric wave.

Abstract: A channel selection method stores broadcast channel numbers for which broadcast signals are input and displays the stored broadcast channel numbers on a screen, thereby facilitating broadcast channel selection. The method comprises the steps of storing the number of a corresponding channel by sequentially scanning broadcast signal channels, displaying the numbers of all the channels scanned in the storage step so as to be able to distinguish the stored channel numbers from unstored channels numbers, and selecting a channel using only a channel number stored in the storage step from among the displayed channel numbers. Accordingly, the broadcast channels can be identified with ease, permitting a desired channel to be easily selected.

Abstract: A method of producing a composited video image based on depth uses a serial combiner to which a plurality of video input signals, representing video images, and priority signals are input. The video input signals each have an associated depth signal. The depth signals are sorted from farthest to nearest and a matrix control signal is generated from the depth signals. The matrix control signal is used to route the video input signals to appropriate inputs of the serial combiner in order from farthest to nearest. The priority signals are derived from the depth signals either serially or in parallel.

Abstract: A cochannel interference filter for a HDTV transmission system comprising a post-comb filter. The post-comb filter comprises first and second feedforward circuits. The first feedforward circuit includes a first adder and a first delay circuit. The first adder has a first input connected to an output of a data clock recovery circuit. The first delay circuit has an input connected to the output of the data clock recovery circuit and an output connected to a second input of the first adder. The second feedforward circuit includes a second adder and a second delay circuit. The second adder has a first input connected to an output of the first adder. The second delay circuit has an input connected to the output of the first adder and an output connected to a second input of the second adder. Also, the post-comb filter comprises third and fourth feedforward circuits. The third feedforward circuit includes a third adder and a third delay circuit.