Abstract: A tuner of for a digital satellite television receiver comprises a single conversion stage which produces an IF signal at a low enough frequency to permit a SAW filter to be used to perform symbol shaping as well as the normal IF filtering function. The local oscillator is controlled by a phase locked loop tuning control IC normally used to control the local oscillator of a tuner of a conventional broadcast or cable television receiver. In an exemplary embodiment for tuning RF signals provided by a block converter in the 950 to 1450 mHz frequency range, the IF has a center frequency of 140 mHz.

Abstract: Television tuning systems and methods employing use of ghost cancellation and antenna directionality control to produce a ghost-free television signal. The invention employs use of a antenna whose directionality can be changed to change reception quality of a received television signal, and a baseband ghost cancellation unit which can perform baseband ghost cancellation. In a first embodiment of the invention, the directionality of the antenna is changed so that a television signal of sufficient reception quality is received from which a ghost-free television signal can be produced therefrom by the baseband ghost cancellation unit. A second embodiment of the invention further employs use of a tuner, and involves controlling the directionality of the antenna and the tuning frequency of the tuner so that a tuned television signal is produced which is properly tuned and of sufficient quality that a properly tuned ghost-free television signal can be produced therefrom by the baseband ghost cancellation unit.

Abstract: A picture storage device conveniently employed in conjunction with an electronic still camera or a video camera has an input data converting unit for separating luminance signals of input color picture data having a non-interlaced data format with the sampling rate of the luminance signals and two-route color signals of 4:2:0 into a data string of even-numbered pixels and a data string of odd-numbered pixels, separating the two-route color signals of the color picture data into a data string of the former half pixels and a data string of the latter half pixels, and distributing and re-arraying the separated data, a storage unit having a storage capacity of at least one frame and adapted for storing data in a data re-arraying sequence by the input converting unit, a display data converting unit for converting the data stored in the storage unit into picture-displaying data, and a controller for controlling the input converting unit into synchronization with data writing in the storage unit.

Abstract: A testing jig is comprised of a circuit board which replaces and emulates the data transfer between a network interface module and a decoder engine of a settop box in a digital network. The testing jig receives the encoded video output of an encoder used in the network and converts the protocol of the encoded video directly into the protocol used for data transfer between the network interface module and the decoder engine, thus bypassing all of the elements in the network between the encoder and the settop box and facilitating the testing of the video output by an encoder or the decoding performed by a decoder engine of a settop box.

Abstract: An imaging apparatus is disclosed which is integrally provided with two image pickup systems for respectively converting subject light into image signals and two displays for respectively displaying images relative to the image signals obtained by the two image pickup systems. In the disclosed imaging apparatus, since the operations of the two image pickup systems are synchronized, it is not necessary to insert an element, such as a prism, in each optical path. Further, since a common signal processing circuit is provided for performing predetermined processing of the image signals outputted from the two image pickup systems, the size of the imaging apparatus is reduced.

Abstract: A video display, which may be a television receiver with associated set top device, an intelligent television receiver, or a personal computer system enabled for television display, has associated therewith a remote control of the three axis type which controls modification of the visual images displayed. The remote control cooperates with a microcontroller.

Abstract: A method for detecting and thinning a contour image of an object in a video frame comprises the steps of: (a) calculating edge magnitudes for pixels in the video frame and detecting edge points, (b) generating a contour image constituted by the detected edge points, and (c) thinning the contour image by comparing an edge magnitude for each of the edge points with each of the edge magnitudes included in a plurality of edge magnitude sets, each of the edge magnitude sets having a series of three edge magnitudes selected from the edge magnitudes corresponding to the neighboring pixels surrounding said each of the edge points.

Abstract: A circuit configuration for intermediate frequency demodulation for a video signal processing device includes an intermediate frequency filter to which an input signal converted to an intermediate frequency is delivered, and a mixer for demodulation with a simulated video carrier. In a further branch, the video carrier is eliminated from the input signal by a bandpass and converted in an oscillator into reference signals being mutually phase offset by 90.degree.. A phase tracker ensures that the phase and frequency of the simulated video carrier are correct relative to the signal to be demodulated. The phase tracker contains in each of two branches a mixer and a low pass, through which a component separation of the video signal to be demodulated is carried out. The reference signals are weighted in further mixers with determined equisignal components and combined into the simulated video carrier.

Abstract: In a projection television system, a blue phosphor roll-off compensation network is included in the emitter circuit of a common emitter configured transistor comprising the driver amplifier for the blue cathode ray tube. The roll-off compensation network includes a voltage divider connected between the emitter of the common emitter configured transistor and a source of a bias voltage, and a second transistor having its base connected to a point within the voltage divider and its collector-emitter path connected in series with a gain changing resistor between the emitter of the common emitter configured transistor and the source of the variable bias voltage. The voltage divider determines the level of drive current at which the second transistor is rendered conductive and thereby the point at which roll-off compensation is applied. The gain changing resistor determines the amount of compensation.

Abstract: Color monitoring apparatus has similarities to conventional vectorscope but utilizes unique color difference signals which are luminance independent. Linear combinations of ratios between R, G and B differences produce a display which maps color one-to-one to the plane of the display.

Abstract: 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 audio signals and the digital processing path provides demodulated component digital video and audio signals. The demodulated analog and video signals are combined in composite or component form to achieve various desirable effects in a highly flexible system architecture. OSD and display map normalization functions are also integrated within the system architecture.

Abstract: A memory device for channel selection in a television receiver comprises a nonvolatile memory for storing at least one set of channel data and channel attendant data, and a RAM having a channel data storing part which accesses and stores all channel data stored in the nonvolatile memory. When a read tuning command is given, the nonvolatile memory is accessed in order to search addresses of the channel attendant data if a specified channel exists in the RAM. When no specified channel data exists in the RAM, the nonvolatile memory is not accessed.

Abstract: A method for self-diagnosing a television(TV) receiver, wherein the TV receiver has a controller, which includes a central processing unit, a read only memory, a random access memory(RAM) and an erasable-programmable read-only memory (EPROM), for controlling the self-diagnosing and a power supply unit for producing both an initial power for driving the controller and an operational power for driving other units of the TV receiver except for the controller, comprises the steps of: (a) determining whether the initial power is applied; (b) first self-diagnosing the TV receiver, if the initial power is supplied, so as to determine either to wait a turn-on signal to turn the TV receiver on or to produce an alarm signal warning an abnormal state; (c) determining whether the turn-on signal is received; and (d) second self-diagnosing the TV receiver while the operational power is activated by the received turn-on signal, to produce a result of the second self-diagnosis onto a screen of the TV receiver.

Abstract: A CDP-incorporated television receiver is provided which includes a CD reproducer, a CDG processor, a CDV processor, and a CD-OK processor. The CD reproducer reads data from an optical disk, and the CDG, CDV, and CD-OK processors input such data and respectively produce corresponding RGB, synchronization, and other signals, which respectively correspond to CD-graphics, CD-video, and CD-OK. A CD controller also receives a data signal from said CD reproducer, and determines the type of compact disk currently being reproduced by the CD reproducer based on the data signal. As a result, the CD controller produces a selection signal corresponding to the type of compact disk and outputs the selection signal to a switching matrix. The switching matrix selectively outputs one group of RGB, synchronization, and other signals based on the selection signal to an encoder, and the encoder converts the selected RGB signal into a CD video signal.

Abstract: In a video transmitter including a first data processing system wherein compressed and encoded video-audio data are read out of a first store under control of a CPU, and then decoded to be reproduced, there is provided a second data processing system for after-recording, data processing operation of which is controlled by a CPU. The second processing system comprises a audio data compressor, a first buffer memory, a second store, a second buffer memory, and a audio data decoder. Reproducing operations of the first and second data processing systems are performed in synchronism with each other. Thus, with a video transmitter equipped with a codec apparatus, it is possible to achieve after-recording.

Abstract: A method for adjusting the lens offset of a video camera, in which the offset value of the lens is calculated quickly and exactly during only a small travel of a focus lens and a zoom lens, thereby shortening the time required for calculating the offset value conventionally involving a large travel of the focus lens and the zoom lens, preventing an error, and further curtailing the cost of production.

Abstract: In a video signal test, a sync signal test is first performed in which specification items of sync signals are measured. If the result is good, then a dot level test is performed using a dot discriminating pattern in which a dot level of the video signal changes between the maximum value and the minimum value for every dot. If the result is good, then a gradation test is finally performed using a gradation change pattern in which the gradation gradually changes for every horizontal line. In a case that the gradation test result is determined to be good, the functions of the video signal generator are finally judged to be good. On the other hand, if any one of the testing results is not good, the function test is ended at that stage without executing the next test.

Abstract: A wireless interactive consumer video system and a method for wireless communication between an input and display unit and a video electronics unit. The input and display unit includes a key pad and a video display. The input device accepts a user entry and generates a data signal corresponding to the user entry. The input and display unit transmits the data signal to the video electronics unit, which generates a video signal responsive to the data signal. The video signal is then provided to the input and display unit, which provides an image on the video display.

Abstract: A video display, which may be a television receiver with associated set top device, an intelligent television receiver, or a personal computer system enabled for television display, has associated therewith a remote control which controls modification of the visual images displayed. By use of the remote control, a human observer may cause a processor controlling the video display to execute a control program formulated in a particularly concise language and controlling the display of menus and the like. Menus are displayed as overlays onto a live motion video image. A display controller and video reception circuitry cooperating for displaying full motion video visual images occupying substantially the entirety of a viewable screen area and a menu display occupying a minor portion of the screen area and overlying the full motion video visual images.

Abstract: A video display, which may be a television receiver with associated set top device, an intelligent television receiver, or a personal computer system enabled for television display, has associated therewith a remote control which controls modification of the visual images displayed. By use of the remote control, a human observer may cause a processor controlling the video display to execute a control program formulated in a particularly concise language and controlling the display of menus and the like.