Abstract: An information storage medium includes video data and a markup document to play back the video data in an interactive mode. The markup document includes device-aspect-ratio information which is referred to for displaying of the markup document.

Abstract: The disclosed embodiments relate to a system and method for modifying video signals. The system may comprise at least one decoder that decodes a video signal that comprises embedded picture setting data, and a video processor that is adapted to detect whether the system is operating in an on-screen display (“OSD”) mode, apply the embedded picture setting data if the system is not in the OSD mode, and withhold the embedded picture setting data if the system is in the OSD mode. The method may comprise the acts of decoding a video signal that comprises embedded picture setting data, detecting whether a system is operating in the OSD mode, applying the embedded picture setting data if the system is not in the OSD mode, and withholding the embedded picture setting data if the system is in the OSD mode.

Abstract: A synchronization separation circuit extracts a synchronization timing signal from a video signal, and a burst gate pulse generator generates a timing pulse signal for gating a color burst signal period. In the color burst signal period restricted by the timing pulse signal, a first counter counts up cycles of a color burst signal at a first timing as a rising edge of the color burst signal and a second counter counts up cycles of the color burst signal at a second timing as a falling edge of the color burst signal. A color burst determination circuit receives count values to determine presence/absence of a color burst signal superimposed on the video signal.

Abstract: A Wireless Regional Area Network (WRAN) receiver comprises a transceiver for communicating with a wireless network over one of a number of channels, and an Advanced Television Systems Committee (ATSC) signal detector for use in forming a supported channel list comprising those ones of the number of channels upon which an ATSC signal was not detected, wherein the ATSC signal detector is a threshold-based detector and detects an ATSC signal as a function of at least one threshold, and wherein the ATSC signal detector is responsive to at least one of a carrier tracking loop lock signal, a symbol timing recovery lock signal and a synchronization (sync) lock signal.

Abstract: An arrangement for maintaining even tube burn-in. The arrangement identifies active and inactive display regions on a display unit when video content is displayed on the display unit. When inactive display regions are identified the arrangement monitors the duration that the active display regions remain active. After the active display regions become inactive and a predetermined time period has passed the arrangement displays a corrective image on the identified inactive regions. The predetermined time period may be set by a user or based on the user's viewing habits.

Abstract: A D/U ratio is measured for desired and undesired signals in a wireless video transmission system at a shared channel frequency based on a received signal at a geographic location in proximity to regions within respective service areas for the desired and undesired signals. A video tuner demodulates the received signal to generate a baseband video signal. A leveling circuit normalizes the baseband signal. A video processor identifies horizontal sync pulses within the baseband signal, generates a sampled signal comprising the horizontal sync pulses, and removes components of the desired signal from the sampled signal to generate an undesired signal component. A D/U analyzer determines a Fourier transform having a plurality of bins in response to the undesired signal component, identifies at least one of the bins having a spectral peak corresponding to an undesired signal, and calculates the D/U ratio in response to a magnitude of the identified peak.

Abstract: An automatic Video Detector (“AVD”) for detecting the transmission format of a received video signal is disclosed. The AVD may include a video detector array module and a state machine. The video detector array module may include a video line detector and a sub-carrier frequency detection module in signal communication with the video line detector.

Abstract: A communication apparatus includes a first determination unit that determines whether an external apparatus can transmit device information of the external apparatus to the communication apparatus, a device information acquisition unit that acquires the device information from the external apparatus even when the first determination unit determines that the external apparatus cannot transmit device information of the external apparatus to the communication apparatus, a second determination unit that determines whether the device information acquired from the external apparatus is correct, and a communication unit that transmits video data corresponding to the device information to the external apparatus if the second determination unit determines that the device information is correct even when the first determination unit determines that the external apparatus cannot transmit device information of the external apparatus to the communication apparatus.

Abstract: A display apparatus and a control method thereof is provided in which channels corresponding to a predetermined broadcasting format are displayed on a display unit even though they are not separately selected by a user as desired channels. A display apparatus includes a display unit to display a picture thereon, and a tuner to select a channel, a broadcasting format selection unit to select a predetermined broadcasting format, a signal receiver to receive information about the broadcasting format, and a controller to control the tuner to allow the channel corresponding to the broadcasting format to be displayed on the display unit when the broadcasting format is selected through the broadcasting format selection unit.

Abstract: System and methods for processing signals in a television system are disclosed and may include measuring relative power of RF carriers over a full bandwidth of one or more received TV channels. The method may also include determining based on the measured relative power, whether the one or more received TV channels includes a digital component or an analog component without demodulating the received TV channel. It may be determined whether the one or more received TV channels includes a digital component or an analog component without synchronizing and/or decoding the one or more received TV channels. The method may further include tuning to the one or more received TV channels. It may be determined whether an applied power gain for the one or more received TV channels is a maximum power gain.

Abstract: According to one embodiment, a video signal processor has a moving block determining module, a vertical edge detector, a moving block number counter, a moving field determining module, a pulldown pattern detector, and a pulldown signal determining module. The moving block determining module divides each field configuring an input video signal into a plurality of blocks, and determines a motion of a block within the plurality of blocks, the block of which the motion is determined having a same spatial position within two fields adjacent to each other. The vertical edge detector detects a vertical edge within each of the plurality of blocks in the each field. The moving block number counter counts a number of moving blocks excluding a block having the vertical edge within a screen based on the detection result of the vertical edge detector and the determination result of the moving block determining module.

Abstract: An apparatus and method for supporting a Hot Plug Detect (HPD) function in a portable terminal using High Definition Multimedia Interface (HDMI) are provided. The apparatus includes an HPD unit for generating an HPD signal using an operation voltage of a first modem upon connecting to a display apparatus through an HDMI cable, the first modem for enabling a second modem upon detecting the HPD signal, and the second modem for outputting video data upon being enabled by the first modem.

Abstract: Signal processing units capable of providing plug-in detection without an external circuit occupying GPIO resource are provided, in which a switching element is coupled to a television signal output pad, a terminal resistor is coupled between the switching element and a ground voltage, and an interrupt signal generator generates an interrupt signal when a receiving port of a television signal receiver is coupled to the television signal pad. A control unit turns on the switching element to connect the terminal resistor to the television signal output pad when receiving the interrupt signal, wherein the switching element, the terminal resistor, the interrupt signal generator and the control unit are integrated in a chip.

Abstract: A display apparatus connected to an external device through a connection unit and a method of determining the format of an input image uses a connection unit to be connected to an external device and determines the format of a video signal input through the connection unit. Accordingly, it is possible to realize a slim display apparatus.

Abstract: According to one embodiment, a video display device has a connection unit configured to connect to a plurality of external instruments via a network, a receiving unit configured to receive, from the plurality of external instrument connected to the video display device via the connection unit, standard compatibility information indicating that the external instrument meets the mutual controllability standards, a display unit configured to display video information output by one of the plurality of external instruments and a selection unit configured to select one of the plurality of external instruments, corresponded to information based on the standard compatibility information, connected to the connection unit as an output source of video information to be displayed on the display unit.

Abstract: According to an embodiment, previous data group input time is subtracted from current data group input time in order to obtain a difference time each time a data group is input. The difference time is subtracted from a packet transmission interval in order to obtain an interval difference. The interval difference is added to a total difference time. If the total difference time is not greater than the first predetermined value, then the input data group is transmitted as a packet. Otherwise, the input data group is discarded and the total difference time is initialized to a value obtained by subtracting the packet transmission interval from the first predetermined value, if the total difference time is greater than the first predetermined value.

Abstract: A system and method are provided for delivering data including graphical components to user terminals through a communications network, e.g., a cable TV network. In one embodiment, multiple versions of a graphical component of a program guide, each formatted for a respective aspect ratio of a user's TV, are generated. On the other hand, a single version of non-graphical program guide data may also be generated. A data stream containing the non-graphical data and the multiple versions of the graphical component is transmitted to set-top terminals in the network via a transmission channel. If a graphical component is desired, the set-top terminal retrieves from the data stream a selected version of the graphical component that is compatible with the aspect ratio of the TV to which it is connected.

Abstract: A noise determining apparatus is provided. The noise determining apparatus includes a video determiner which determines type of video according to a pre-set criterion, a noise level determiner which determines a level of noise with reference to output from the video determiner, and a noise determiner which determines presence or absence of noise with reference to output from the noise level determiner. Accordingly, incorrect discrimination between a texture area of low level which is similar to noise and noise having a great level difference with respect to neighboring pixels is reduced.

Abstract: The present invention relates to method and apparatus of providing supplementary service information for A/V contents written in a recording medium. This method has a recording medium containing Presentation Language data, which have to be included like as in a digital television signal for supplementary service information in accordance with Advanced TV Enhancement Forum or Digital TV Application Software Environment standard, and reproduces, if a disk reproduction is requested, the Presentation Language data as well as requested A/V data and provides them for a connected external device such as a digital television. As a result, various video information and functions provided with Presentation Language data by a recording medium can be realized at a digital television set being able to accept Presentation Language data.

Abstract: A dual mode tuner/receiver is disclosed in which both analog and digital signals can be received and processed. A low pass filter allows all channels below a selected frequency enter the circuit. A precisely controlled dual conversion circuit creates an intermediate frequency (IF) signal. An automatic carrier detection circuit monitors the IF signal and determines whether the signal is of analog or digital format and intermediate frequency filters are adjusted based upon the type of signal detected. A coherent oscillator circuit generates in-phase and quadrature reference signals that are used by video and audio detectors for further processing of the IF signal. In-phase and quadrature outputs are provided for digital signals and composite video and audio outputs are provided for analog signals.

Abstract: A pull-down signal detection circuit includes an inter-field correlation determination unit configured to determine an inter-field correlation on the basis of a current field signal and a 1-field delay signal, and providing a determination result which indicates a “strong/middle/weak” level, an inter-frame correlation determination unit configured to determine an inter-frame correlation on the basis of the current field signal and a 2-field delay signal, and a pull-down signal determination unit configured to determine whether the input video signal is a pull-down signal or not, on the basis of the determination results of the inter-field correlation determination unit and the inter-frame correlation determination unit.

Abstract: A device for detecting a display mode of a video signal having first pixels corresponding to a first field, second pixels corresponding to a second field, and third pixels corresponding to a third field, includes a pixel converter, a measurement circuit, and a decision circuit. The pixel converter converts the second pixels to generate converted pixels. The measurement circuit generates measurement values related to differences between a converted pixel, a first pixel, and a third pixel. The decision circuit determines the display mode of the video signal according to the first, second, and third measurement values.

Abstract: Personal multimedia devices can detect when an incoming video format is different from a native format and make a local decision to convert incoming video formats to a format native to the personal multimedia device. The personal multimedia device may include a media processor that comprises an MPEG decoder/encoder, graphics processors, and a video decoder/encoder. These components increase a frame rate of a received video signal when the frame rate of the received video signal is less than a frame rate of the native video format of the personal multimedia device and decrease the frame rate of the received video signal when the frame rate of the received video signal is greater than the native frame rate of the set-top box. The graphics processor scales a frame resolution of the frames in the received video signal to correspond to the native video format.

Abstract: A display mode switching device and method automatically switches a display mode of a television set to an overscan mode or to an underscan mode depending on a content of a screen. In a case of connecting a television set to a computer, a call from an application for an API in an OS is detected by a device driver when a user starts playing a DVD or a game. Accordingly, an output mode for the television set is switched to the overscan mode. In this way, a motion video or a game is displayed on the television set in the overscan mode. Meanwhile, when the user finishes playing the DVD or the game, a call for the API to release resources is detected by the device driver, and the output mode is restored to the underscan mode. In this way, a computer screen is displayed on the television set in the underscan mode.

Abstract: Techniques are disclosed herein that provide a TV receiver that supports a set of existing iTV standards and proprietary iTV implementations. Further, the TV receiver can be extended to support additional iTV standards and proprietary iTV implementations. A digital television data stream is received and processed by a client. The digital television data stream is analyzed to determine which interactive television format is present. A registry of interactive television virtual machines is searched to determine whether a virtual machine is registered for the interactive television format. Each of the interactive television virtual machines is adapted for one of the interactive television formats. If a virtual machine that matches the interactive television format is found, it is loaded and hosted. Hosting the virtual includes providing services to the virtual machine through common application programming interfaces (APIs) machine includes. The common APIs may be used by any virtual machine that is loaded.

Abstract: A scaling device for video displays includes a limited number of line buffers and produces stable output frames by using a stable clock source to produce the output image clock. The scaling device further includes an error counter for determining an error between an ideal output line length and an actual line length and an error accumulator for keeping a running total of all output line length errors. The error accumulator can signal when the total line error for a given frame is greater than one, indicating that an additional output point should be added to the blanking area of that output line.

Abstract: A method of interpolated frame generation and input source detection includes: receiving input frames; storing at least a first frame of successive frames in the input frames into a storage device under a film mode; comparing the stored first frame with a second frame of the successive frames not stored in the storage device to generate a first comparison result for determining whether to exit the film mode; and reading frames stored in the storage device to generate interpolated frames under the film mode.

Abstract: Systems and methods for the implementation of a task or activities based user interface on a television on screen display (OSD) and a remote control unit. As provided in the embodiments described herein, the embodiments utilize the device auto detect mechanisms incorporated in HDMI 1.3 (CEC) and 1394 compliant televisions and other audio-video components to provide a user interface on the OSD or remote control unit providing activities or tasks based control.

Abstract: Methods and apparatus to distinguish a signal originating from a local device from a broadcast signal are disclosed. A disclosed system classifies a video component of an audio-video signal by analyzing a histogram of pixel data, analyzing a quality factor, and/or attempting to detect embedded data in the video component. The disclosed system also classifies an audio component of the audio-video signal by attempting to detect embedded audio data and/or analyzing waveform energy associated with the audio component. A source of the audio-video signal is determined based on the video classification and/or the audio classification.

Abstract: An adaptive compensation system for aspect ratio conversion. Video information, intended for her first aspect ratio display, e.g. the standard NTSC aspect ratio, is processed to determine additional information that can enable that video to be displayed and fill a wider aspect ratio screen. The processing can be a calculation which calculates, for example, texture, color and/or brightness of the edge portions, and automatically calculates video information to match the texture, brightness or color. The processing can be a database lookup, which automatically looks up likely portions from a database. The processing can also be an adaptive determination of what vertical portions of the image can be stretched without affecting the viewability, and then an adaptive stretching of different portions by different amounts.

Abstract: A video display device having an automatic input switching capability includes at least one input connector coupled to the video display device for accepting an external video signal, sensing means coupled to the at least one input connector for detecting the presence of the external video signal; control means coupled to the sensing means and video circuitry of the video display device, wherein the control means controls the operation of the video display device when a new video signal is sensed by the sensing means.

Abstract: According to one embodiment, an electronic apparatus includes a receiver which receives a broadcast signal, a demodulator which filters the received broadcast signal using a filtering characteristic, and separates the received broadcast signal into a video signal and an audio signal, a video decoder which executes a process for detecting frequencies of a vertical sync signal, a horizontal sync signal and a color sub-carrier signal from the video signal which is output from the demodulator, a unit which selects, from the plurality of kinds of filtering characteristics, a filtering characteristic which enables the video decoder to detect the vertical sync signal, the horizontal sync signal and the color sub-carrier signal, and a unit which determines the kind of the broadcast standard corresponding to the received broadcast signal, based on the selected kind of filtering characteristic and the detected frequencies.

Abstract: Disclosed herein are an apparatus and method for extracting the aspect ratio of received broadcast content. The apparatus includes an image reception unit, a frequency detection unit, a determination unit, and an output unit. The image reception unit receives a digital image. The frequency detection unit detects the frequency of the predetermined region of the frame of the digital image. The determination unit determines the aspect ratio of the received digital image by comparing the detected frequency with a threshold value. The output unit outputs the aspect ratio of the received digital image based on the result of the determination.

Abstract: A method for detecting progressive material in a video sequence is disclosed. The method generally includes the steps of (A) calculating a plurality of block statistics for each of a plurality of blocks in a current field of the video sequence, (B) calculating a plurality of field statistics by summing the block statistics over all of the blocks in the current field, (C) calculating a noise level for the current field based on a subset of the block statistics from each of the blocks and (D) generating a mode flag for the current field based on both (i) the field statistics and (ii) the noise level, wherein the mode flag identifies if the current field is part of a 2:2 pull-down pattern.

Abstract: A pattern matching section compares reference taps supplied by one area extracting section with a reference tap component of a training pair pre-stored in a training-pair storing section, selects a training pair including a reference tap component having highest similarity to the reference taps, and supplies the selected training pair to a normal-equation generating section. Training pairs stored in the training-pair storing section include a SD signal and HD signal. A prediction-coefficient determining section obtains prediction coefficients by solving normal equations generated by the normal-equation generating section. A prediction calculating section produces a HD signal by applying the prediction coefficients to prediction taps extracted by another area extracting section.

Abstract: Provided is a digital broadcast receiving device (20) which can display a high resolution image longer without burdening users with a cumbersome operation. The digital broadcast receiving device (20) of the present invention switches, based on vehicle information, between switching thresholds by which switching is made between plural digital broadcast decoders outputting different digital broadcast images from one another in accordance with a reception state of digital broadcast waves. The plural digital broadcast decoders include, for example, a stationary reception decoder (200), which outputs a digital broadcast image for stationary receivers, and a mobile reception decoder (201), which outputs a digital broadcast image for mobile receivers.

Abstract: A video apparatus is provided with automatic deinterlacing and inverse telecine pre-filtering capability to automatically analyze the frames of the video to determine at least whether the video is one of telecine, non-telecine progressive and non-telecine interlaced formatted, and to automatically reformat the video into a non-telecine progressive format if the video is determined to be one of telecine and non-telecine interlaced formatted.

Abstract: A source format detector for detecting a format of a video signal includes a frequency data generator for generating first frequency data corresponding to a first field in the video signal, and second frequency data corresponding to a second field in the video signal; a transform domain comparator for comparing the first frequency data with the second frequency data to thereby obtain a comparison result; and a detector for detecting the format of the video signal according to comparison results for a plurality of first and second fields.

Abstract: A digital television autoprogramming and tuning method and apparatus. In a digital television which can tune both MPEG 2 and PSIP format signals, a method of tuning uses one or more tables of information populated during an autoprogramming process. For MPEG 2 channels, the physical channel equals the major channel number and can be directly tuned. For PSIP channels, the major channel indexes a TSID which is used to determine a physical channel. If the TSID does not correspond to the correct program, the correct TSID is determined from the Program Specific Information in the data transport stream 134 and the system re-tunes to the correct physical channel. The autoprogramming process sequentially steps through each physical channel and populates the autoprogramming tables with information about each channel it finds, saving only a single TSID for a given major PSIP channel.

Abstract: A video converting device and method for a digital TV is disclosed. The present invention is capable of detecting whether a conversion is being processed and displaying a previous video or a predetermined pattern for a predetermined time during which the conversion is being processed. If there is no video signal, the present invention displays a predetermined pattern, thereby outputting a pleasant screen to a user. Also, the present invention reduces the conversion time by structuring the bit streams into a GOP.

Abstract: A system for overlaying a motion video signal onto an analog signal on a display. The system includes a motion video processing unit for receiving and processing the motion video signal into a signal having an analog video format, a video format analyzer and synchronizer device for receiving the analog signal and for determining video timing parameters and a corresponding original pixel clock of the analog signal and for controlling video timing parameters of the motion video signal to match the video timing parameters of the analog signal determined by the video format analyzer and synchronizer device so as to provide an output motion video signal which is synchronized with the analog signal and a display determining device for determining the display of the analog output signal or the synchronized output motion video signal on the display.

Abstract: This present invention is a VGA port signal examining apparatus and method thereof. By intercepting the analog signals transmitted from the VGA port to the monitor, such as vertical signals, horizontal signals, R-signals, G-signals, and B-signals, and by examining the relative data of analog signals to determine whether the VGA port is normal or not.

Abstract: Whether interlaced video fields form a progressive video frame can be automatically determined. The presence or absence of a first characteristic of one or more video fields can be determined by analysis of the fields and/or related information such as flags, cadence, previous determinations, and others. Similarly, the presence or absence of a second characteristic can be detected. In accordance with the detecting, how likely or whether the two or more video fields form a progressive video frame can be determined based on a possibly predetermined likelihood that fields of progressive video frames in general have or do not have the first characteristic and based on a possibly predetermined likelihood that fields of interlaced video frames in general have or do not have the second characteristic.

Abstract: A video signal judgment circuit for judging the condition of a video signal compounded of a picture signal and a synchronization signal is provided. The video signal judgment circuit is adapted to first filter the video signal by a low-pass filter (LPF) having an adjustable cutoff frequency and then separate the synchronization signal from the filtered signal to provide a pulsed synchronization detection signal. Upon comparison of a detection signal formed on the basis of the synchronization detection signal with an adjustable judgment reference value, the video signal judgment circuit outputs a video signal judgment signal indicative of the condition of the video signal as to whether or not the video signal is nullified or deteriorated.

Abstract: An image display device and a connector are disclosed. The image display device includes: a connector connected with a cable through which a video signal is transmitted; a display panel for displaying an image based on the video signal inputted via the cable to the connector from an external apparatus; and a display controller for displaying a connector indication indicating the connector on the display panel. The connector includes a cable detection mechanism for detecting presence or absence of a connection of the cable, and the display controller changes a connector indication mode displayed on the display panel, according to a detection result of the cable detection mechanism.

Abstract: According to one embodiment, a video signal processor has a moving block determining module, a vertical edge detector, a moving block number counter, a moving field determining module, a pulldown pattern detector, and a pulldown signal determining module. The moving block determining module divides each field configuring an input video signal into a plurality of blocks, and determines a motion of a block within the plurality of blocks, the block of which the motion is determined having a same spatial position within two fields adjacent to each other. The vertical edge detector detects a vertical edge within each of the plurality of blocks in the each field. The moving block number counter counts a number of moving blocks excluding a block having the vertical edge within a screen based on the detection result of the vertical edge detector and the determination result of the moving block determining module.

Abstract: A signal detector for detecting and indicating the duration of a signal pulse by comparing the relative polarities of two voltages generated during the two states of the pulsed signal.

Abstract: Disclosed is a video signal converting apparatus and a display device having the same which may convert a low-resolution video signal from a host into a different-resolution video signal capable of being displayed on the entire screen of a high-resolution supporting display device. The apparatus has a detector for detecting a first resolution signal indicative of a resolution of the first display signal using horizontal and vertical synchronization signals related to the first display, a comparator for comparing the first resolution signal with a second resolution signal indicative of a reference resolution; and a converter for converting the first display signal into the second resolution signal, if there is a difference between the first and the second resolution signals.

Abstract: Disclosed is a video signal converting apparatus and a display device having the same which may convert a low-resolution video signal from a host into a different-resolution video signal capable of being displayed on the entire screen of a high-resolution supporting display device. The apparatus has a detector for detecting a first resolution signal indicative of a resolution of the first display signal using horizontal and vertical synchronization signals related to the first display, a comparator for comparing the first resolution signal with a second resolution signal indicative of a reference resolution; and a converter for converting the first display signal into the second resolution signal, if there is a difference between the first and the second resolution signals.

Abstract: Disclosed is a video signal converting apparatus and a display device having the same which may convert a low-resolution video signal from a host into a different-resolution video signal capable of being displayed on the entire screen of a high-resolution supporting display device. The apparatus has a detector for detecting a first resolution signal indicative of a resolution of the first display signal using horizontal and vertical synchronization signals related to the first display, a comparator for comparing the first resolution signal with a second resolution signal indicative of a reference resolution; and a converter for converting the first display signal into the second resolution signal, if there is a difference between the first and the second resolution signals.