Abstract: The invention relates to a receiving apparatus comprising a receiver for receiving signals, e.g. radio or television signals, which comprises means for collecting particular information incorporated in at least a part of the signals, e.g. in order to build a compound electronic program guide. The apparatus according to the invention is adapted to perform the scanning when the receiver is not in use, e.g. during stand-by mode, or when the apparatus is performing a function which does not involve the receiver.

Abstract: A method and apparatus for converting the color base of an image input layer include processing that begins by interpreting a conversion flag. The processing then continues by converting the color base of the image input layer from a first color base to a second color base when the conversion flag indicates a color base conversion. Note that a color base corresponds to standardized colorometries of video signals, color space of video signals, and/or any other displaying characteristics of video signals that are standardized or may be subsequently standardized. Further note that an image input layer corresponds to a display or portion thereof (e.g., a window or a picture in picture), wherein the display is capable of presenting images from multiple video and/or graphics data sources (e.g., a television signal and a computer application).

Abstract: A television system performs beam convergence in video displays. The system is implemented through one or more convergence sensors, which are exposed to two distinct convergence test patterns. The output signals from the sensors when exposed to the two convergence test patterns are used in beam convergence calculations. The convergence test patterns are selected to reduce the dynamic range requirement for an A/D converter in the television system supplied with the sensor output signals.

Abstract: A tone display method for displaying a tone of an image in a display system which divides a time width of a field of an image signal into a plurality of weighted subfields and controls operation of the subfields.

Abstract: When new software is received by air in the form of successive blocks by a video receiver having a specialized digital video processing module (19), connected by a first bus (28) to a specialized video memory (29), and a microprocessor (15) connected by a second bus (27) to a rewritable program memory (26), the microprocessor verifies the blocks of this new software one by one and stores them in the video memory (29) of the specialized video processing module until the new software is complete. Not until that moment will the new software be transferred to the program memory (26).

Abstract: A method and device for enhancing the sharpness of a video image. The luminance signal portion of a television signal is boosted in its upper frequency range, e.g., between about 2.0 MHz and about 4.25 MHz. This enhancement of the luminance signal accentuates the transitions between the high brightness levels and low brightness levels of the luminance signal. The resulting video image appears much sharper because this quicker transition reduces the amount of signal carrying intermediate brightness information.

Abstract: The present invention provides a digital video receiving apparatus for displaying a plurality of digital TV pictures on a plurality of receiving terminal apparatuses. The digital video receiving apparatus includes a tuner for extracting the received digital TV multiplexed signal, a demodulator for decoding the digital signals provided from the tuner, a demultiplexer for demultiplexing the multiplexed signals outputted from the demodulator to obtain a bit stream including a video signal, an audio signal and a data signal. The digital video receiving apparatus further includes a video decoder, an audio decoder and a data decoder for decoding signals outputted from the demultiplexer. The digital video receiving apparatus decodes the input multiplexed digital TV signal and outputs a video signal, an audio signal and a data signal corresponding to respective programs.

Abstract: A microprocessor controlled color phase locked loop is provided which provides flexibility and adaptability for different television standards and sampling rates. Color burst phase error and color burst amplitude information are stored in data registers located at the output of the phase locked loop's low pass filter rather than at the output of the color demodulator.

Abstract: The invention provides a method for filtering motion effects from a de-interlaced image and an apparatus associated therewith. The method assumes that the de-interlaced image is formed by a combination of a first interlaced image and a second interlaced image. A first step in the method is to interpolate an interpolated line between two lines in a region of the first interlaced image. A variance value is then determined between the interpolated line and a corresponding line in a corresponding region of the second interlaced image. A threshold value will have been predetermined in the system and the variance value is compared against that threshold value. If the variance value is less than the threshold value then the correlation is strong and the corresponding line is displayed in the de-interlaced image. Otherwise if the variance value exceeds the threshold value then the interpolated line is displayed. This process is repeated for each pixel until the entire image is displayed.

Abstract: The present invention provides a color testing system for testing intensities of color output from a screen of a display device. The color testing system comprises a reading probe for reading color output from the screen of the display device, a display equipment, and a color analyzer connected to the reading probe for analyzing the intensities of the color output from the screen of the display device. When testing the display device, the color analyzer will display a screen graph and a cursor on the display equipment corresponding to a next testing area on the screen according to a predetermined test track. The screen graph and the cursor will direct an operator to move the reading probe on the screen of the display device so that the reading probe can properly read the color output of each testing area along the test track on the screen of the display device.

Abstract: A method and apparatus for processing video signals to a plurality of video outputs may be done within a video system that includes a video decoder, a digital-to-analog module, and an output control module. In such a video system, the video decoder includes an analog-to-digital conversion module for converting an input video signal(s) into a digital video signal(s). The video decoder further includes a comb filter that is operably coupled to receive the digital video signal and to produce therefrom a Y component digital signal and a C component digital signal. The output control module is operably coupled to receive the Y and C component digital signals and also to receive an output command. If the output command dictates, the output control module provides the Y and C component digital signals to the digital-to-analog module. In response, the digital-to-analog module produces a composite video output and an S video output.

Abstract: The present invention is a method and apparatus for converting scan rates of image data in a memory. A buffer stores a source image data. A scaling filter is coupled to the buffer to scale the source image data.

Abstract: A digital TV display device and method is disclosed including a display control unit providing selection signals, a look-up table unit having at least two look-up tables wherein at least one of the look-up tables is operative in a read mode and the other is operative in a write mode in response to the selection signals, and a look-up table selection unit forwarding a data read from the at least one look-up table operative in the read mode in response to the selection signals for displaying.

Abstract: The circuit configuration provides for the combined color decoding and decimation of a video signal, particularly for picture-in-picture insertion in television sets. The color subcarrier is determined from a video signal for the purpose of recovering the chrominance signal components. The video signal is multiplicatively combined with orthogonal color subcarrier components and then filtered through low-pass filters. For the luminance signal components, the video signal is filtered by a further low-pass filter. In order to obtain decimated luminance and chrominance signal components, subsampling is carried out after the low-pass filters. Given suitable dimensioning of the low-pass filters matched to the decimation factor, a single low-pass filter in each of the chrominance signal paths is sufficient and, in the luminance signal path, an otherwise necessary notch filter is obviated.

Abstract: A CCD 10, a solid state imaging device is driven by a driving circuit 102 to perform an independent reading driving to all the pixels. A CLCRCB generation circuit 104 receives a signal output from CCD 10 to make RAM 106 store the signal, generates a luminance signal CL and color differential signals CR and CB for a pixel (x, y) in the y-th row and the x-th column in CCD 10 by an operation based on the output signal from the two rows and two columns stored in RAM 106. Matrix circuit 108 receives signals CL, CR and CB and separates and generates an RGB signal to each of all the pixels in CCD 10 by a prescribed linear operation.

Abstract: A demodulator suitable for implementation in a single chip for demodulating digital video broadcast signals comprising data modulated on a multiplicity of spaced carrier frequencies, wherein an input broadcast signal is converted to a frequency sufficiently low to enable analog digital conversion of the signal, the demodulator comprising analog to digital conversion means (20) for converting the broadcast signal to a series of digital samples, real to complex conversion means (22) for converting each digital sample to a complex number value, Fourier transform means (24) for analyzing the complex number values to provide a series of signal values for each carrier frequency, frequency control means (9, 38), comprising means responsive to the output of said Fourier Transform means for producing a signal for controlling the frequency of the signal formed by said complex number values, and signal processing means for receiving the signal values and providing an output for decoding, the signal processing means incl

Abstract: A frame conversion device for switching between a plurality of image signals that are not synchronous and outputting each image signal continuously and synchronously. In addition, a desired signal is extracted from the continuous image signals and then output in parallel with the continuous image signals. The frame conversion device utilizes a frame conversion unit for recording an image signal optionally selected from a plurality of input image signals. A frame unit is utilized for reproducing a recorded signal outputted from the frame conversion unit independent of the operation of the frame conversion unit. The frame conversion unit includes an identification signal assigning part which assigns an identification signal to a non-image region of an image signal selected from a plurality of input signals. Frame-converting storage parts store the selected image signal. A signal output part selectively reads the image signal stored in each frame-converting storage device.

Abstract: Systems and methods for correlating color correction instruction between two color correcting devices are disclosed. The method includes performing a nulling test on a representation a first device has of a known standard and retaining the results of the test. A second color correcting device performs a nulling test on the same known standard and the results of this test are retained. From the results of these two tests a color correction instruction of one of the devices may be converted to a color correction instruction on the other device so that substantially the same color correction effect is achieved.

Abstract: A video image projection apparatus is disclosed. The apparatus uses a laser as a light source and modulates the light beam using a modulator according to an image signal. The apparatus projects the modulated light to a screen using a light scanning system. The laser display system includes three primary color laser light sources, an optical system needed for three-color light combining/separation, a light modulator loading the image signal into the three-color laser, and a driving circuit driving the system by processing the video signal electronically. A hybrid video laser color mixer has a structure that combines very small-sized hybrid light beam combining/separation optical elements and a 3-channel light modulator. It allows the size of the image projection apparatus to be about 6 by 5 by 3 centimeters. Additionally, the light alignment of the elements is close to self-alignment.

Abstract: When processing a time varying effect that positions an input image into an interlaced output image, the input image is filtered first. The filtered input image then is positioned in the output image by mapping one line in the output image to one line in the input image space. The input image may be filtered once and the filtered image may be used to create all output fields for the effect. Thus, the overhead per output field used to create the output field from the input image is reduced in comparison to filtered subpixel positioning. In addition, equipment that is capable of performing only unfiltered subpixel positioning may use the filtered input image to reduce interlaced artifacts.