Abstract: A device for controlling an aspect ratio in a TV-computer integrated wide screen receiver, includes an input signal select switch for selecting a television signal double-scanned or a computer monitor signal of a VGA mode, a gain controller for controlling a gain of the signal which is selected by the select switch, a clamp circuit for clamping the signal controlled by the gain controller, an analog/digital converter for converting the signal clamped by the clamp circuit, an aspect ratio conversion device for horizontally and vertically converting the digital signal sampled by the analog/digital converter; and a phase-locked loop connected to the analog/digital converter and the aspect ratio conversion device, for correcting an image distortion by controlling a converting clock speed.

Abstract: An image processing apparatus is capable of processing image data of different modes without any special conversion process. The apparatus includes a discriminator which discriminates an image data format chosen from among a plurality of image data formats each defined by corresponding displaying format inclusive of aspect ratio format or pixel number format. An auxiliary data recorder records an auxiliary data representative of a chosen data format in a predetermined area of a recording medium. The operation of the discriminator depends on the state of a selecting element disposed on the image processing apparatus for choosing the image data format, thereby suiting it to an user's convenience when recording provided image data in an applied recording medium. The auxiliary data recorder operates in such a manner that the auxiliary data is capable of being reproduced while maintaining a correlation between the auxiliary data and the corresponding image data.

Abstract: A circuit arrangement for automatically recognizing the line number of a video sync signal in accordance with the 525 or 625 line standard, this circuit arrangement automatically generating a control signal corresponding to one of the relevant line numbers. To recognize the line number, a line counter (14) clocked with horizontal frequency pulses is provided, this line counter receiving the frame-frequency sync pulse signal as a reset signal. Moreover, a decoding stage (15) is arranged at the output of the line counter (14), which supplies a signal for changing the line standard hitherto used and a signal characterizing the corresponding line standard. In a subsequent signal evaluation circuit (16), these two signals are checked and a control signal either corresponding to the current line standard or to the new line standard is applied to the output (17).

Abstract: In order to suppress undesirable video scenes, such as advertisements during a television program, it is known to suppress the undesirable video scenes by image processing when characteristic images for the beginning and end of the undesirable video scenes are known. Since many broadcasting stations have started to characterize only the beginning of the advertisements, however, the known process does not ensure the return to the television program at the end of the advertisements. The method allows undesirable video scenes to be reliably detected for recording the same or for reliably returning to the television program when the undesirable scenes are suppressed. For that purpose, when the beginning of an advertisement is recognized, an image that precedes in time the beginning of the advertisement is recorded.

Abstract: A picture signal encoding method in which a picture string produced by converting non-interlaced pictures into sets of field pictures each beginning from the first field of each interlaced picture and another picture string produced by converting non-interlaced pictures into sets of field pictures each beginning from the second field of each interlaced picture are combined together to an input picture signal for encoding, is disclosed. The method includes a detection step of detecting a lone field not constituting the non-interlaced picture in the input picture signal, and an encoding step of re-constructing the picture string of the input picture signal and encoding the resulting non-interlaced picture string.

Abstract: In a video processing system (14), a method of detecting and compensating for motion of an image which includes the steps of: detecting a first pixel value, a second pixel value, and a third pixel value, the first pixel value of a first scan line in a first field, the second pixel value of a second scan line in the first field, and the third pixel value in a second field; providing a motion indicator based on the first, second, and third pixel values; selecting a plurality of interpolation coefficients from a memory based on the motion indicator signal; and providing an interpolated color space pixel based on a first color space pixel associated with the first pixel value, a second color space pixel associated with the second pixel value, and based on the plurality of interpolation coefficients.

Abstract: A method for detecting when a digital television signal is accompanied by co-channel interfering NTSC signal of substantial amplitude is described for use in a digital television receiver. The video portion of any co-channel interfering NTSC signal is synchrodyned to baseband, for generating an in-phase demodulation result including first artifacts of the digital television signal, and for generating a quadrature-phase demodulation result including second artifacts of the digital television signal. The quadrature-phase demodulation results are phase shifted by 90.degree. at frequencies in a prescribed frequency range before being linearly combined with the in-phase quadrature-phase demodulation results, to generate a linear combining result substantially free of the first and second artifacts of the digital television signal in the prescribed frequency range.

Abstract: A 3-2 pulldown detector for a video compression encoder initially converts each frame of an input video signal that includes converted film material as well as original video material into top and bottom fields. Consecutive fields from the top and bottom fields are then input to respective sum of absolute difference circuits, the outputs of which are subtracted from each other to produce a difference signal. The difference signal is processed to remove spikes that represent scene changes and to generate a flag signal during the periods of the input video signal when the converted film material is present. The flag signal is then used by a frame rate reduction circuit to eliminate the repeated fields in the converted film material prior to input to a video encoder that outputs a compressed video signal.

Abstract: A video port interface that determines the amount and type of incoming data by reading information from certain memories. A first memory indicates a first format of the incoming data. A second memory indicates a second format of the incoming data. Finally, a third memory indicates a number of lines of the first format that will be received. The video port interface reads all three memories at the beginning of each frame, then counts incoming lines until it reaches the line indicated by the third memory. At the end of that line, the video port interface switches from processing the data in the first format to processing data in the second format.

Abstract: A television receiver includes a picture-display-region discriminating means for discriminating whether or not any picture is displayed on a specific region on a screen of the television receiver, by utilizing a luminance signal of a composite video signal which is received by the television receiver and corresponds to the specific region. A signal in a frequency band which is unnecessary for the video signal is eliminated, and then it is discriminated whether or not any picture is displayed on the specific region, by utilizing the luminance signal and a carrier chrominance signal contained in the video signal.

Abstract: A multi-system video signal demodulating apparatus includes at least a color signal processing unit and a color discriminating function for demodulating a component video signal from video signals of two or more different systems. The multi-system video signal demodulating apparatus includes a detector for detecting continuity between vertical synchronizing signals of the input video signals. The color discriminating function is executed when the detector detects a discontinuity between the vertical synchronizing signals. The continuity between the vertical synchronizing signals of the input video signals is detected. The color discriminating function is executed when a discontinuity between the vertical synchronizing signals is detected during continuity detection. A synchronizing signal of an input video signal is discriminated. A frequency of a color burst signal is discriminated based on a result of the synchronizing signal discrimination.

Abstract: Image transformation is performed via a video display controlling device. Image data is transformed from an image storage memory having a matrix size of (N+a).times.(M+b) onto a display screen sized to display an image according to N.times.M size matrix. The video display controlling device operates according to any one (or a combination of) several image transformation modes, including a normal mode, an expansion mode, a compression mode, and a moving image mode. These transformations are accomplished by first setting vertical and horizontal addresses of a reference pixel among pixel data stored in the storage memory, and setting an image mode for transforming an original image in a predetermine pattern. Addresses are then generated, in accordance with the set reference pixel and the set image mode, for selecting an N.times.M set of pixel data from among the (N+a).times.(M+b) pixel data in the storage memory.

Abstract: A method and an apparatus perform an inverse telecine procedure on a video sequence to eliminate redundant information introduced by the telecine process, so as to achieve more efficient data compression. The method and apparatus maintain synchronization between audio and video portions of the video sequence by ensuring that 20% of all frames, distributed substantially uniformly over the video sequence, are deleted. One embodiment of the present invention is provided in desktop computer system.

Abstract: A wide display scream television receiver having a plurality of video display modes, the optimum display mode is automatically selected depending on a kind of material of an input video signal includes a display control for displaying a picture corresponding to the input video signal on the display screen in a plurality of display modes by controllably changing a size of the picture in the horizontal direction and/or vertical direction. The number of horizontal lines from the heading line of each field of the input video signal is counted up with a counter. A detection region setting circuit respectively sets, in the upper and lower regions and the center region of the display screen, the detection region in the predetermined range designated by a single line to a plurality of lines for each field of the input video signal on the basis of the counted value of the counter.

Abstract: A television system 106 and display method for receiving and displaying television broadcasts having various formats. The television system resizes (106) the various received image formats for display on a common display device. Images are resized horizontally by altering the rate at which data is sampled by the television (106). Images are resized vertically by using vertical scaling algorithms which alter the number of lines in an image. Format detection may be done automatically by decoding information contained in the vertical interval of the television broadcast signal, or by counting the number of lines in each frame. The input format may be indicated by a viewer.

Abstract: An image data editing apparatus edits image data coded based on inter-image prediction. Outputted are number data for specifying image data read from a recording medium and edition point data indicative of edition points of the read image data. The image data is read from the recording medium based on the number data. The image data is separated into inter-image prediction method data and prediction residual data. Discontinuity of the image data is discriminated based on the edition point data to change the inter-image prediction extending over before and after the edition points into an inter-image prediction to be conducted within two of the edition points, and outputting changed inter-image prediction method data. The changed inter-image prediction method data and the prediction residual data are multiplexed. An image data decoding apparatus decodes image data coded based on inter-image prediction.

Abstract: A circuit for identifying the standard of a color television signal includes a gain-controlled amplifier for standardizing an amplitude of oscillations of a composite video baseband signal during a reference burst centered on a reference level. The burst is designed for use by band-pass filters for identifying the standard and is preceded by a line synchronization pulse. The circuit also includes a device upstream of the amplifier for eliminating line synchronization pulses.

Abstract: A television signal display apparatus includes a main picture quality adjustment value memory for storing a picture quality adjustment value set according to a viewer's preference; a sub picture quality adjustment value memory for storing a picture quality adjustment value preliminarily set for every aspect ratio; a microcomputer for calculating an optimum picture quality adjustment value for a new aspect ratio from the picture quality adjustment values read from the main and sub picture quality adjustment value memories, setting the optimum picture quality adjustment value in a picture quality adjusting circuit and making an aspect ratio selecting circuit work. When the aspect ratio is changed, the viewer can watch a picture having the same picture quality as before the change without the incongruity due to picture quality differences produced by the aspect ratio selection when the picture is of such low luminance that ABL does not function properly.

Abstract: The automatic-discriminating apparatus is constituted by functional blocks such as a killer circuit, an APC circuit, a switch, and an automatic discrimination control circuit. The switch connects one of crystal oscillators to a VCO of the APC circuit by a control signal from the automatic discrimination control circuit. The automatic discrimination control circuit divides one vertical scanning period into predetermined sections. When receiving a killer signal indicating the OFF state from the killer circuit at the predetermined sections even one time, it outputs a control signal holding the connection state thereof to the switch, and holds the APC circuit in the locking state. When receiving a killer signal indicating the ON state at the divided predetermined sections a predetermined number of times, it outputs a control signal connecting the other crystal oscillator through the VCO to the switch.

Abstract: A black and white detector circuit monitors a burst signal separated from a composite video signal in order to determine when the composite video signal includes color video information or black and white video information. An output signal is generated which is active when color information is included and inactive when black and white information is included. The burst signal will oscillate above and below a first threshold value during a burst period if color information is included, and will remain constant if black and white information is included. When the burst signal oscillates above and below the first threshold value for a predetermined period of time, an output signal is activated and will remain active until the burst signal remains constant during a burst period. A current source is enabled when the burst signal rises above the first threshold value. The current source builds up a first level of charge on a first capacitor during the burst period.

Abstract: An apparatus for automatically synchronizing a video system to one of a plurality of composite synchronizing signals in accordance with a plurality of known video formats, includes a number of synchronizing signal stripper circuits, corresponding, respectively, to a number of types of composite synchronizing signals, a horizontal analyzer, having a plurality of horizontal standard identification circuits corresponding to a identification circuits for each known horizontal synchronizing signal rate for each type of composite synchronizing signal, for determining an approximate horizontal synchronizing signal rate and, a vertical analyzer, having a plurality of vertical rate identification circuits corresponding to the number of different known vertical rates, for determining the vertical synchronizing signal rate.

Abstract: An automatic aspect ratio discrimination apparatus for detecting a picture starting position, a picture ending position and a subtitle ending position by generating three histograms segmented by two slice levels S and T at every line from a luminance signal Y at a comparison circuit and counters, judging when the line is black, a picture or a subtitle by inputting the obtained histograms to the comparison circuit, detecting lines varying from black to picture, from picture to black, and from subtitle to black at an edge detection circuit and judging if the lines varying from black to picture and from picture to black are stable in time or not at a temporal filter.

Abstract: An apparatus and method for converting a video signal output from a composite video instrument, by which the operating state of a system or the manufacturing state of a system board can be easily recognized, is disclosed. When a normal video signal is not input, a monochrome/color signal component is output to be displayed on a screen. The monochrome/color signal component has either a value internally set by a system, or a value set in accordance with externally supplied data to then be displayed on a screen.

Abstract: A system is provided to enhance the capability of a display system which format digital images of different types from multiple input data streams for a high-resolution screen of arbitrary shape and size, with the display system adapted to receive independent data streams from different data sources at the same time and control how and where the images from the data streams are presented on the screen in a type-independent manner. The screen layout is controlled by an active screen format that specifies which data streams are to be received, where on the screen to present the images and how to present the images. Type-independent data formatting is accomplished by choosing the preprocessing handler/transformation handler pair suitable for the type of a data stream and activating the handlers so that they restore images from the data stream and transform them to fit on the preallocated portion of the screen on the fly.

Abstract: The present invention is situated in the presence of an image source having an image and a display device having an image alignment register, a pixel address, and a pixel signal, the display device coupled to the image source. The apparatus of the present invention preferably comprises a pixel level comparator, a computer, and a pixel detection unit. The pixel level comparator is for setting a pixel detect signal to true if the pixel signal exceeds a threshold. The pixel level comparitor is coupled to the display device. The computer has a selected address and is coupled to the image alignment register. The pixel detection unit is for setting a pixel data signal to true if, while the pixel address and the selected address are equivalent, the pixel detect signal is set to true. The pixel detection unit is coupled to the display device, the pixel level comparitor and the computer.

Abstract: A method and apparatus for inserting source identification data into a video signal prior to its transmission, recording or display. The source identification data (Finger Print) is injected into the active picture area of a video signal without disturbing the viewing of the video signal and the data is retrieved by a data reader, called a Fingerprint Reader. The data injection or "fingerprinting" process consists of dynamically offsetting the video pedestal to carry information which can then be read back from any videotape made from the output of the data-injecting unit. In particular, the fingerprint carries the ID number of the unit used and the current date. The offset lasts for one entire field and has an amplitude of approximately 0.5 IRE-- that is, a given field either has the nominal setup or a setup value differing from nominal by 0.5 IRE. The data is repeated every 128 fields in order to provide ample samples for the reader to detect and display the source identification data.

Abstract: An adaptation of an aspect ratio of a picture signal is effected by providing (1) a second derivative (D2) of an expansion factor (EF) in response to at least one constant value (C1, C2), by providing (3-13) a first derivative (D1) of the expansion factor (EF) in response to the second derivative (D2), by providing (14-21) the expansion factor (EF) in response to the first derivative (D1), and by expanding the picture signal in dependence upon the expansion factor (EF) to adapt the aspect ratio of the picture signal, whereby use of an expansion factor (EF) less than one results in a compression of said picture signal.

Abstract: The invention relates to a detector for detecting reception of a color television signal coded according to the SECAM standard of the type including a filter pretuned by a general control of the filters of an integrated circuit for identifying the standard according to which the television signal is coded and a phase comparator receiving the input and output signals of the filter, and including circuitry for tuning the frequency of the filter on the actual mean frequency of two consecutive lines of the signal.

Abstract: The DC level of the low-frequency component of a horizontal frequency is detected from a video signal by a horizontal LPF 16d and a DC value detection circuit 16g. In addition, the high-frequency component of the horizontal frequency is detected from the video signal by a horizontal BPF 16e and a nonlinear circuit 16h. Furthermore, a high-frequency component in the vertical direction is detected from the video signal by a vertical BPF 16f and a nonlinear circuit 16i. On the basis of three detection results, the presence/absence of a non-image portion of the video signal is determined by a determination circuit 16j.

Abstract: A Digital signal processor selectively demodulates and decodes signals received from multiple types of transmission channels such as satellite, terrestrial and cable transmission channels. A received signal is representative of compressed digital video information such as television picture information, and is encoded in one of a plurality of coding formats (e.g., trellis or punctured codes of selectable code rate). The received signal is also modulated in one of a plurality of modulation formats (e.g., PAM, QAM or PSK). A demodulator selectively demodulates the signal modulated in one of the plurality of modulation formats, and a decoder selectively decodes the demodulated signal coded in one of the plurality of coding formats.

Abstract: A radio receiver for receiving a selected digital HDTV signal, irrespective of whether it is a quadrature-amplitude-modulation (QAM) or a vestigial sideband (VSB) signal, using the same tuner. The tuner supplies a final IF signal in a 6 MHz frequency band, the lowest frequency of which is not appreciably more than 2.27 MHz. The final IF signal is digitized at a rate that is a multiple of both the symbol frequencies of the QAM and VSB signals, for synchrodyning to baseband, with the 2.375 MHz difference between the carrier frequencies of QAM and VSB signals being taken into account in the digital synchrodyning circuitry. The carrier frequencies of the QAM and VSB final IF signals are regulated to be submultiples of the multiple of both the symbol frequencies of the QAM and VSB signals by applying automatic frequency and phase control signals developed in the digital circuitry to a local oscillator of the tuner.

Abstract: A circuit 100 for determining the polarity of an input sequence of pulses 200 or 300 applied to input 102 by digitally determining the polarity of a predetermined number of pulses of the input sequence of pulses using the digital polarity determinator 130 and, dependent on the output of the digital polarity determinator 130, routing the input sequence of pulses by the polarity switch 120 to the output 135 when the polarity of the input sequence of pulses is a predetermined polarity, and routing the input sequence of pulses to the output 135 via the inverter 125 when the polarity of the input sequence of pulses is not the predetermined polarity, thereby providing an output sequence of pulses having only the predetermined polarity.

Abstract: A picture outputting apparatus in which a plurality of picture signals are selectively entered and displayed on a screen with a picture mode matched to the input picture signals. An optimum screen mode is individually stored in terms of input terminals to which picture signals are entered or the frequencies of the input picture signals. A plurality of picture signals are selectively entered at input units I.sub.1 to I.sub.6. The screen modes are set in association with the plurality of the picture signals. A storage unit 17 stores the screen mode information as set by the setting units 9, 10. A display unit 147 displays a picture corresponding to the optional picture signals selectively entered at the input units I.sub.1 to I.sub.6. A judgment unit 15 judges the sorts of the picture signals entered at the input units I.sub.1 to I.sub.6.

Abstract: A method for the recognition of video standards, in which an up/down counter is used to detect the polarity of synchronization pulses. Specifically, a value representing a duration is memorized, a counting value (Q) is produced, this value being incremented when a binary synchronization signal (INCI) is in one state and decremented when this signal is in the other state, a comparison is made of the value representing the duration and the counting value, at a given time, of the synchronization signal, and a signal representing the standard is produced as a function of the result of the comparison. This method is implemented by a circuit comprising a microcontroller, a detection circuit producing a pick-up control logic signal (CAP), a counter producing a counting value (Q) and a register to load the counting value when the pick-up control signal is active.

Abstract: A high precision aspect ratio auto-discrimination apparatus used for display apparatuses and television receivers comprising: an apparatus for detecting the upper edge and lower edge of a letter box picture through detecting the average luminance of every horizontal scan period; an apparatus for detecting respective average luminance levels in a plurality of specific regions in one field picture controlled by a horizontal synchronous signal and a vertical synchronous signal; and, an aspect ratio discrimination section to which the outputs of said both apparatuses are input.

Abstract: An adaptive receiver includes an adaptive decoder for providing decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The apparatus includes an adaptive decoder for providing a first decoded output as a function of a code rate selected from a plurality of code rates. The apparatus also includes an adaptive deinterleaver for deinterleaving the first decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions. In addition, the apparatus includes an output signal processor for processing the deinterleaved output data to provide the decoded output data. The demodulator may also incorporate a an adaptive error decoder for detecting and correcting errors in the deinterleaved output. In addition, a signal quality detector may provide an estimate of the error in the decoded output data. The apparatus is automatically configured to be compatible with the encoded video signal format in response to the error estimate.

Abstract: A multi-television broadcasting signal receiving apparatus and method thereof are provided. In the apparatus, if aerially transmitted several television broadcasting signals are tuned and the tuned signal is inputted as an IF signal, a microcomputer outputs a different chrominance control signal according to the broadcasting system by using the input IF signal. A chrominance signal amplifying portion varies a color concentration of a detected signal according to the broadcasting system by the chrominance control signal output from the microcomputer so as to discriminate the broadcasting system. The color concentration is automatically corrected without the need of an extra correction circuit by correcting the color concentration of the broadcasting signal discriminated by a preprogrammed different gain according to the broadcasting system of the received signal. This effect can be applied to a television for receiving a plurality of broadcasting signals.

Abstract: An automatic video signal identification system uses zero-mean normalized reference signals that are cross-correlated with an input video signal. The input video signal is stored in an acquisition memory and then cross-correlated with a plurality of reference signal templates, each template representing a particular video signal to be identified. The cross-correlation process provides a corresponding plurality of maximum correlation outputs. The largest maximum correlation output is determined, and the corresponding template identified. If not already normalized, the largest maximum correlation .output is normalized to produce a correlation coefficient. Based upon the identified template the correlation coefficient is tested to determine the validity of the match, i.e., whether the video signal is identified or whether the video signal is unknown.

Abstract: A video transmission apparatus for a video teleconference terminal for displaying video signals with a proper aspect ratio in a video teleconference terminal which transmits and receives video signals representing pictures of different aspect ratios. The video transmitter determines, from among the video signals generated by the cameras having different aspect ratios, which signal should be transmitted to the receiving terminal by a key operation on the operation pad. The result of selection by the operation pad is sent via a video controller to a transmission video signal selector, which selects one of the outputs from the cameras according to the result. The video signal from the selected camera is output to a video signal transmitter as a transmission video signal. A CPU of the video controller recognizes the selecting operation on the operation pad and, accordingly, generates a display control signal which indicates an aspect ratio corresponding to the camera thus selected.

Abstract: A circuit arrangement for the digital identification of television transmission standards, particularly PAL, SECAM and NTSC. Provision is made for transmission standard demodulation stages connected in parallel to which a signal composed of a chromaticity signal and a synchronizing character is directed and which are each cyclically activated by control signals for a certain period of time. A trigger is also provided, together with an up-down counter, a circuit arrangement for the evaluation of the value delivered by the up-down counter, and a control logic.

Abstract: A video signal processing apparatus including an input unit for inputting a video signal, a detecting unit for detecting an aspect ratio of the video signal inputted to the input unit, a holding unit for holding aspect information representing the aspect ratio detected by the detecting unit, an abnormal state detecting unit for detecting an abnormal state of the video signal inputted to the input unit, and an output unit for selectively outputting aspect information outputted from the aspect ratio detecting unit and the aspect information held by the holding unit, in accordance with an output of the abnormal state detecting unit.

Abstract: An image pick up and displaying system comprises an image pick up device being provided with a signal superimposing unit for superimposing a recognition signal at a predetermined portion on any of synchronous pulse signals, except for any image signals, the recognition signal indicating any kind of the image pick up device; and a display device being connected to the image pick up device and further being provided with a signal detecting and sweeping control section for detecting any recognition signal to control a sweeping speed and a sweeping time of sweeping on a screen of the display device at least in any one of vertical and horizontal directions thereby the image is displayed on an entire of the screen without any distortion thereof.

Abstract: A VCR or laserdisc player includes circuitry for detecting a code provided by VCR tapes, tape cassettes, or laser videodiscs, which indicates that the material recorded on the videotape or videodisc has been recorded in a compressed fashion to enable proper playback on a 16.times.9 television receiver. In response to detection of this code, the VCR or laserdisc player applies a DC signal to the chrominance output terminal of its S-Video connector. Circuitry in the television receiver detects the DC signal on the chrominance terminal of its S-Video input connector, and controls a wide-screen processor to expand the image by displaying it over the entire width of the 16.times.9 display screen.

Abstract: A video signal processing apparatus processes plural kinds of video signals and is used for displaying each one of the processed outputs of the plural kinds of video signals on the same screen. In the video signal processing apparatus, a memory used for a subtitle processing circuit and a memory used for a helper signal separation circuit are used in common by providing a switching means to switch according to an input video signal. A subtitle processing circuit magnifies a video signal with a letter box format such that a horizontally long picture is inserted in a picture with a 4:3 aspect ratio on a horizontally long screen with 2:1 or 16:9 aspect ratio. The helper signal separation circuit is used for receiving a television signal such as an EDTV 2 system which has a helper signal to improve picture quality.

Abstract: A wide display screen television receiver having a plurality of video display modes, the optimum display mode is automatically selected depending on a kind of material of an input video signal includes a display control for displaying a picture corresponding to the input video signal on the display screen in a plurality of display modes by controllably changing a size of the picture in the horizontal direction and/or vertical direction. The number of horizontal lines from the heading line of each field of the input video signal is counted up with a counter. A detection region setting circuit respectively sets, in the upper and lower regions and the center region of the display screen, the detection region in the predetermined range designated by a single line to a plurality of lines for each field of the input video signal on the basis of the counted value of the counter.

Abstract: A system and method for repeat field detection for use in rate conversion and video encoding of the type contemplated by the MPEG standards. Before encoding a frame, first field in the current frame is compared to the previously occurring field of the same parity. Next, a single number (the inter-field parameter) is generated, which is a measure of the difference between the two fields. If the inter-field parameter is below a threshold a signal is generated to indicate that the current field is a repeat of the previous field of the same parity. Otherwise, the signal is generated to indicate that the field is not a repeat of the previous field of the same parity (i.e. the field likely contains at least one small area of motion).

Abstract: Video signal compression apparatus includes a memory for storing two fields of image data and providing fields of image data separated by one frame intervals. Frames of video signal are composed from the respective ones of the fields. The field types (e.g., odd or even) of respective fields are determined. Flags are associated with composed frames to indicate if a field of respective frames may be repeated upon reproduction, and which field of the composed frames should be displayed first.

Abstract: A circuit for detecting an NTSC signal or a PAL signal in a laser disk player system. In the laser disk player system, the circuit includes an FM video signal processing part for shaping a waveform of the FM video signal picked-up from the optical pick-up part and for outputting the waveform shaped signal; a BPF (Band Pass Filter) and integrator for filtering and integrating the FM video signal shaped in the waveform from the FM video signal processing part, and for outputting an integral value in the form of an electrical signal; and a comparator for comparing the integral value outputted from the BPF and integrator with a determined reference voltage, and for outputting an NTSC or PAL detecting signal. Thereby, the NTSC or PAL signal can be detected quickly.

Abstract: A screen detecting system of a wide screen television for detecting blank top and bottom areas of a video frame contained in conventional video signals and generating top and bottom display limits is disclosed. The top and bottom display limits are used by a display control system of the wide screen television to eliminate the blank top and bottom areas.

Abstract: A video signal processor has parallel signal processing circuits to reduce rocessing time. A plurality of pixel imaging arrays produce signals indicative of an object. The pixel imaging arrays are scanned simultaneously and processed by parallel circuits to produce a plurality of video signals. The video image signals are combined to produce a signal suitable for display on a conventional video monitor.