Abstract: An improved screen aspect ratio conversion which is capable of horizontally compressing and extending two image signals by writing in/reading from two line memory units when the wide screen television having an aspect ratio of 16:9 receives a 4:3 image signal or a 2:1 cinema image signal, thus simplifying the construction of the system, which includes a first line memory unit for receiving a clock of the clock generator as a writing/reading clock in accordance with the first writing enable signal of the clock counter and the first reading enable signal of the coefficient controller and for writing/reading at every line the image data inputted; a sample interpolation unit for performing 4:3 or 7:8 interpolation in accordance with the current image data inputted from the first line memory unit and the previous image data and for selecting at every line the interpolated data in accordance with a coefficient control signal of a predetermined bit generated by the coefficient controller; a second line memory unit f

Abstract: An alternate display content controller provides a technique for controlling a video display separately from and in addition to the content displayed on the operating system monitor. Where the display is a computer monitor, the alternate display content controller interacts with the computer utility operating system and hardware drivers to control allocation of display space and create and control one or more parallel graphical user interfaces adjacent the operating system desktop. An alternate display content controller may be incorporated in either hardware or software. As software, an alternate display content controller may be an application running on the computer operating system, or may include an operating system kernel of varying complexity ranging from dependent on the utility operating system for hardware system services to a parallel system independent of the utility operating system and capable of supporting dedicated applications.

Abstract: A television receiver receives HDTV video signals and scan converts them to a lower line scanning rate with field-to-field interlace. This scan conversion is done to conserve the power consumption by the magnetic deflection system for the kinescope, which has a display screen with a 16:9 aspect ratio and a dot pitch for displaying a 480 scan line frame. The receiver receives scan converts NTSC video signals using time compression circuitry to present them in variants of letter-box form in which the images fill the full height of the display screen, but not its full width.

Abstract: A horizontal display size compensation circuit for a monitor prevents a horizontal display size of a monitor screen from being changed when a horizontal frequency varies according to a video mode. A horizontal frequency is generated by a horizontal frequency generation section corresponding to each video mode. A microcomputer generates a predetermined horizontal display size compensation signal according to the horizontal frequency corresponding to each video mode and a horizontal display size adjustment signal corresponding to an input of a key input section, and a horizontal display size control section controls a horizontal display size of the monitor screen by supplying the horizontal display size adjustment signal of the microcomputer and the horizontal display size compensation signal to the horizontal frequency. Therefore, a horizontal display size of a monitor screen is prevented from varying according to a video mode.

Abstract: There is provided an image display apparatus which automatically detects a picture defect and shifts an image region to eliminate the picture defect. The image display apparatus includes a memory unit for temporarily storing an input image signal, a memory control unit for controlling a readout start address for the memory unit, a display unit to which the image signal read out of the memory unit is supplied, a detection unit of an aspect ratio of the input image signal, and an address control signal generation unit to which an aspect ratio detection output is supplied from the detection unit and which generates a readout start address control signal for the memory unit from the input image signal. When the input image signal having an aspect ratio different from an aspect ratio of image screen display of the display unit is supplied, a readout start address is controlled on the basis of the address control signal generated by the address control signal generation unit.

Abstract: A video display apparatus comprises a video-signal processing circuit for processing an input video signal, a PLL circuit for generating a clock signal, a discrimination circuit for identifying the format of the input video signal and a specification circuit for specifying the format of video information to be displayed. In addition, the video display apparatus also includes a diver-control-signal generation circuit, a driver-control-signal switching circuit and a PLL-signal control circuit. The diver-control-signal generation circuit is used for generating control signals for controlling a gate driver and a source driver which are used for driving a display panel in accordance with the identified format of video information to be displayed.

Abstract: Described is a TV system that uses a single pixmap across multiple video rasters having different raster sizes. In general, the TV system uses at least two headers to select different portions of a single pixmap to be displayed based on different raster sizes. Specifically, each of the two headers points to a single pixmap. In the TV system, the size of the central portion is fixed while the size of the sidepanel portion can be adjusted depending on the displaying mode. In response to different displaying modes, the TV system selectively invokes one of the two headers to select a respective portion to be displayed in the pixmap. By doing so, a single pixmap can be used across multiple video rasters having different raster sizes.

Abstract: When a navigation script has a contradiction with respect to time and place, a navigation information presenting apparatus adjusts the contradiction, executes instructions of the navigation script corresponding to restriction information, and presents the navigation information to the user. In addition, the navigation information presenting apparatus presents navigation information to the user at a timing corresponding to information representing traveling speed and/or time step.

Abstract: A multi-format digital video production system enables a user to process an input video program to produce an output version of the program in a final format which may have a different frame rate, pixel dimensions, or both. An internal production format of 24 fps is preferably chosen to provide the greatest compatibility with existing and planned formats associated with HDTV standard 4:3 or widescreen 16:9 high-definition television, and film. Images are re-sized horizontally and vertically by pixel interpolation, thereby producing larger or smaller image dimensions so as to fill the particular needs of individual applications. Frame rates are adapted by inter-frame interpolation or by traditional schemes, including “3:2 pull-down” for 24-to-30 fps conversions. Simple speed-up (for 24-to-25 conversions) or slow-down (for 25-to-24 conversions) for playback, or by manipulating the frame rate itself using a program storage facility with asynchronous reading and writing capabilities.

Abstract: Analyzing steps are used for automatic aspect format detection in digital video pictures. A black bars analyzing step is performed wherein for each possible aspect format (14:9, 16:9, 2:1) a top and/or bottom area is defined and checked for whether a black bar is present. A center analysis also is performed to check whether an active picture area is present. A horizontal transition analysis determines whether a horizontal border between a dark area and the active part of the picture is present, and then a format choice is made and the picture aspect format is selected. The method can control zoom operation in a TV receiver with a 16:9 picture tube or can control the recording function of a video recording device, in combination with the appropriate apparatus.

Abstract: To provide a method and device for picture display capable of performing suitable picture display corresponding to various video signals. Kind of an input video signal S1 is determined based on prestored characteristic information on video signals, and the input video signal S1 is displayed in picture according to the characteristic information based on the above determined result, so that a suitable displayed picture can be obtained corresponding to the input video signal 1.

Abstract: It is determined whether or not an input video signal is a side panel signal, a letter box signal, or a full line signal. If the input video signal is a side panel signal or a letter box signal, when a multiple-picture displaying process or a reduced picture displaying process is performed, only a signal of an effective picture area is extracted. With only the signal of the effective picture area, the picture sizes are adjusted and the pictures are combined. Thus, even if an input video signal is a side panel signal or a letter box signal, the picture does not become small. In addition, when the reduced picture displaying process is performed, since a wasteful picture portion is not processed, the utilization efficiency of the screen is improved.

Abstract: A method and system for processing video signal. The method and system provide for automatically detecting letterboxing in an input video signal, and scaling a desired portion of the video signal to match a given display device, as well as detecting subtitles in the input video signal and selectively including the subtitles in the desired portion of the video signal. A signal processor (202) receives video image data, calculates image data statistics for each line of the video image, locates at least one desired portion of the video image, scales the desired portion of the video image for display on a display device (116) having a pre-determined aspect ratio.

Abstract: Circuit and method for determining a received signal for a receiver such as a simulcast receiver or an HDTV receiver are provided. The circuit includes a first detector for detecting a first reference signal included in a received signal and outputting a first detection signal, and a second detector for detecting a second reference signal included in the received signal and outputting a second detection signal. The circuit also includes a generator for generating a determination signal which indicates that the received signal is an analog broadcasting signal in the event the first detection signal is detected, and indicates that the received signal is a high definition signal in the event if the second detection signal is detected. Therefore, the received signal can be determined correctly, according to channel selection.

Abstract: Disclosed is a digital TV receiver performing a channel selection using stored channel information and a method for selecting a channel. With respect to a broadcasting signal which is not being currently viewed, the receiver activated at a predetermined period of time to receive that broadcasting signal. The receiver receives and stores channel information for that signal. A channel selection is performed by displaying the stored channel information or an effective channel according to the stored channel information, at the time of switching of a reception mode. Since the channel selection is performed using the stored channel information, the invention can save a time for selecting a channel and provide convenience of use.

Abstract: A method and device is described herein for displaying a television picture comprised of several standard aspect ratio images on widescreen and standard aspect ratio video monitors. A widescreen image including several smaller aspect ratio images are assembled and broadcast. A receiver with a widescreen monitor display can display the entire widescreen image. A receiver with a conventional aspect ratio monitor display can display a combination of the smaller aspect ratio images. The device includes a frame store for storing image information, image configuration logic for determining a configuration of image information, and frame address logic to write image information to frame store with a configuration according to image configuration logic.

Abstract: A method and apparatus for manipulating the display update rate of video signals to minimize the adverse visual effects caused by adding or deleting frames begins by determining a need value for manipulation of the display update rate. The need value corresponds to increasing drift between the display update rate and the refresh rate. As such, as the drift increases between the display update rate and the refresh rate, the need value increases correspondingly. Next, an appropriateness value for manipulation of the display update rate is determined based on image content. In essence, the appropriateness value is determining whether, if a frame addition or deletion were to occur, would it occur at a point that would produce minimal adverse visual effects. Based on a relationship between the need value and the appropriateness value, the display update rate is manipulated by adding or deleting a frame.

Abstract: A broadcast reception apparatus is provided with a reception unit for receiving broadcast data as a transport stream. The transport stream includes video data and a plurality of navigation information sequences. Each navigation information sequence includes navigation information which includes graphics data to be combined with the video data for display. A TS (Transport Stream) decoder unit extracts the video data and navigation information from the transport stream. A reception control unit controls the TS decoder unit so that the TS decoder unit extracts navigation information from a navigation information sequence which is suitable for the the broadcast reception apparatus. A navigation information storage unit stores the navigation information extracted by the TS decoder unit.

Abstract: Display source memories of resolutions according to image formats are prepared. The image format is discriminated from an extracted video packet. A font or a bit map is read out from the display source memory corresponding to the image format. The font or bit map corresponding to the image format is developed in an OSD plane memory and synthesized to a video signal by a mixing circuit. Thus, a character or a bit map picture plane of similar quality and size can be always seen irrespective of the received image format.

Abstract: When a video signal is double-speed processed by the first device, a slight vertical deflection process is performed for redundant similar scan lines by the second device, and any slight deflection in the second device is controlled by the first device to thereby enable setting so as to always display images with excellent resolution. More particularly, a discrimination signal is generated by the first device to designate interlaced scanning and flag a need for vertical scan-line deflection, and such discrimination signal is provided to the second device such that the second device can always appropriately determine the need for vertical scan-line deflection. Through monitoring for the discrimination signal, an image display apparatus is capable of preventing vertical resolution from being deteriorated when video signals possibly requiring vertical line-shifting are inputted from an external source.

Abstract: The present invention relates to a caption display method of a digital television which is capable of displaying a caption having a certain size and a font on an appropriate position of a picture having 16:9 picture ratio when a picture having 4:3 picture ratio or a picture having 16:9 picture ratio enlarged from the picture having 4:3 picture ratio is displayed on a screen of a digital television having 16:9 picture ratio.

Abstract: A video signal processing system including a scaler and a VBI decoder is provided. The video signal processing system includes a control signal generator for generating a mode select signal for selecting one of a normal mode for reading or writing the active video data from or to the memory, and a VBI mode for reading or writing the VBI data from or to the memory. A control signal is also generated for enabling data to be read or written from or to the memory in each of the modes. A multiplexer multiplexes active video data and VBI data in accordance with the mode select signal.

Abstract: When viewing a 4:3 aspect ratio image on a widescreen display, disturbing black bands appear to the left and right of the displayed image. Similarly, when viewing a letterbox image on a 4:3 aspect ratio display, disturbing black bands appear above and below the displayed image. These black bands result in uneven ageing of the phosphors in the display screen. An apparatus is provided which detects these black bands and automatically expands the image in the appropriate direction such that these black bands are automatically eliminated.

Abstract: A driving method of a display device in which the number of voltage levels of scanning lines during a non-selection period is only one, and the voltage level of a data line corresponding to a display element that presents no image is set to the voltage level of the scanning lines during the non-selection period. The power consumption of the display device is thus reduced. A minimum area of the entire screen of the device is used for image presentation while the remaining area is set to a display-off state (display-off mode) using the above driving method, and thus the power consumption of the display device, for example, in a standby state is reduced. Each of the display-enabled area and the display-off area is flexibly set. A combination of a multi-line driving method and the above driving method helps further reduce power consumption.

Abstract: A display apparatus for a television or computer terminal having a cathode ray tube with a deflection coil. The display apparatus includes a signal processing circuit which compresses a display period in a horizontal scanning period of an input video signal and which expands a blanking interval of the horizontal scanning period of the video signal, the signal processing circuit providing an output of the video signal to the cathode ray tube, and a horizontal retrace interval expansion circuit which expands a horizontal retrace line interval of a horizontal deflection current for the deflection coil of the cathode ray tube in accordance with the blanking period expanded by the signal processing circuit. The cathode ray tube displays the input video signal in accordance with the output of the signal processing circuit and the output of the horizontal retrace interval expansion circuit.

Abstract: Device and method for processing a picture in an MPEG decoder, is disclosed, which can reduce an amount of data to be stored in a memory, particularly, of the video format conversions carried out in the image presenting part, by processing the video format conversion requiring a data reduction such as the letter box processing during a video decoding process by the video decoder in advance, reducing amounts of data transmissions between the video decoder and the external memory and between the external memory and the image presenting part, the present invention can reduce not only an external memory size, but also a memory bandwidth, whereby improving an efficiency of use of the memory, and, on top of the fact that a memory size reduction lowers cost, the memory bandwidth reduction can further lower cost because a slower clock can be used.

Abstract: An image data format conversion apparatus comprises: a memory storing image data; a data reading means reading image data from the memory to output it; a format converting means converting the image data output from the data reading means to a predetermined format to output it or making the image data pass through without converting it; a vertical filter vertically interpolating the image data output from the format converting means by filtering operation to output the data or making the image data pass through without interpolating it; a horizontal filter vertically interpolating the image data output from the vertical filter by filtering operation to output the data or making the image data pass through without interpolating it; an image synthesizing means performing logic operation for image data output from the filter, and synthesizing the image data to output it; and an image output means outputting the image data from the image synthesizing means to a designated display unit.

Abstract: An image-processing apparatus displays different UI pictures suitable for the resolutions in accordance with aspect ratios 16:9 and 4:3, respectively. UI picture data to form a UI picture is divided into wide-mode parts only used when the wide mode is set, normal-mode parts only used when the normal mode is set, and common parts shared between both modes. The divided parts are stored in a storage device. When the wide mode is set, the predetermined widemode parts and the common-parts are selected. When the normal mode is set, the predetermined normal-mode parts and the common parts are selected. The selected parts are mapped in predetermined positions of an effective display screen (image-processing region). Thus, the UI picture is formed. With this arrangement, the advantage of the increased resolution in accordance with an aspect ratio of 16:9 can be effectively utilized.

Abstract: A system for displaying images of varying resolution (i.e., XGA, SVGA, VGA) on a pixel-addressed screen surrounds selected-resolution images with blanked rows above and below the image and blanked columns to the left and the right of the displayed image. During the vertical blanking period, switches in the vertical scanning circuit blank non-image rows above and below the image, and, during horizontal scanning, switches in the horizontal scanning circuits blank columns on the left and right of each horizontal line so that the display image is bounded by a blanked screen portion. A black signal from a black-signal generator drives each blanked pixel to frame the displayed image in black.

Abstract: A system for converting from an image with one aspect ratio to another aspect ratio includes a plurality of simple converters and a selector which selects one of the plurality of converters to convert from one image size to another. The selector divides the image into a plurality of pixel portions and establishes a rule to select the appropriate converter for each of the plurality of pixel portions.

Abstract: An automatic aspect ratio (AR) compensating apparatus for a television receiver having a double window function which enables a full-screen display of two video sources having different ARs.

Abstract: A discrimination about a standard screen or a wide screen is performed by a discriminating circuit in accordance with the presence or absence of upper and lower black stripes of a wide screen video signal. A video signal transmitted through a low pass filter is supplied to the discriminating circuit, the presence or absence of the upper and lower black stripes of the video signal is detected and the discrimination about the standard screen or the wide screen is performed by the discriminating circuit. A noise level of the video signal is detected by an S/N ratio detecting circuit. Characteristics of the low pass filter are set in accordance with an output of the S/N ratio discriminating circuit.

Abstract: A video signal converter converts a video signal to a required form. The required form of the signal is the display format for displaying the signal. The input signal is converted to a digital signal and stored in a memory using the output of a first clock pulse generator synchronized to the horizontal synchronizing signal of the input signal. The digital signal is read out from the memory using the output of a second clock pulse generator synchronized to the vertical synchronizing signal of the input signal from a position specified by the controller. The output digital signal is then reconverted to an analog signal.

Abstract: A letterbox image detection apparatus for detecting a letterbox image by detecting a boundary of an image area and a non-image area, so as to display the image area on a full screen according to the detection result but not to display the non-image area. The apparatus includes timing pulse generator for generating a timing pulse for splitting one screen image into N columns (N is an integer of 2 or more), image property calculator for calculating the image property of the N horizontal sections (hereinafter referred to as columns) split by the timing pulse generator, inter-line difference calculator for calculating the inter-line difference of the N image properties, edge detector for comparing the inter-line difference with a predetermined upper first threshold th1 and for detecting the edge, and edge position data holder for holding the vertical position data of the in-column edge detected by the edge determinator.

Abstract: An apparatus and method for reproducing a video signal of a digital video disk. The method includes the steps of checking a television mode; if the television mode is a PAL system, selecting a video processor in a PAL mode and checking a video signal mode recorded in the disk; and if the video signal recording mode is an NTSC system, selecting a video decoder in an NTSC mode so as to supply a pseudo PAL video signal to a television.

Abstract: A system detects the presence of NTSC co-channel interference and enables NTSC comb-filtering when the NTSC signal is detected. The system comb-filters the baseband signal to generate a filtered baseband signal, and accumulates the noise power of the baseband and filtered baseband signals. The noise power of the baseband and filtered baseband signals is compared by forming a difference between the two noise powers, and the system detects the NTSC signal when the difference exceeds a threshold T. The threshold T is related to a product of a signal power of the baseband signal and a minimum carrier to noise ratio for the ATSC system.

Abstract: When both a progressive scanning video signal (for example, telecine signal) and an interlace scanning signal are present, the telecine signal is processed with pulldown information. The interlace scanning signal is processed without the pulldown information. Thus, even if both a telecine signal and a conventional interlace scanning signal are present, the pulldown information can be effectively used.

Abstract: A semiwide-screen television receiver which can provide a horizontally extended picture on a screen. The receiver receives and displays on a cathode ray tube (CRT) an image signal having a 12:9 screen aspect ratio (AR), and includes a cathode ray tube having a horizontal dimension which is larger than that of a conventional CRT having a 4:3 screen aspect ratio. A deflection unit including an inductance variation device for adjusting the inductance value of a horizontal deflection coil is provided, so as to minimize an inductance dispersion of the deflection unit.

Abstract: A display has a display panel of a first aspect ratio and is able to display on the display panel an image of a second aspect ratio whose width element is larger than that of the first aspect ratio. The display has a gate driver, a data driver, and a timing controller. The gate driver sequentially selects gate lines of the display panel. The data driver stores data for one gate line and supplies the data to one of the gate lines selected by the gate driver. The timing controller supplies control signals to the gate and data drivers so that predetermined data is displayed in top and bottom non-image areas of the display panel during a vertical blanking period. The display is capable of displaying images of different sizes.

Abstract: To display an image based on image file data generated from moving images, the number of pixels is changed in the horizontal or vertical direction of a display screen by a signal processing operation. Various television broadcast standards and display modes are supported. For example, in the NTSC system, a signal processing operation subjects frame data (720 by 480 pixels) to 8:9 pixel count conversion for converting the number of pixels in the horizontal direction from 720 to 640. An image based on the image file data (i.e., still picture) is therefore displayed on the computer screen with the correct aspect ratio.

Abstract: An image display obtains a high quality enlarged or reduced image, by making the output image almost the same level of the inputted image. An inputted image signal is transmitted to a discrete cosine transformer and transformed to frequency band information. The image information transformed to the frequency band is transmitted to a memory controller and stored in a frame buffer. Image information read out from the memory controller is implemented enlargement/reduction interpolation at an enlargement/reduction interpolation section. The image information enlarged or reduced is transmitted to a reverse discrete cosine transformer and restored to image information and then outputted. In this image display, even the image is enlarged or reduced, the part of frequency of the image is kept as it is, the deterioration of the image quality is decreased largely.

Abstract: In order to carry out format conversion or scaling processing of picture signal by a memory having a small capacity, picture signals of interlace scanning are converted into picture signals of progressive scanning by interpolation by using an IP convertor 1 and a multiple scan convertor 3, a scaling processing of expansion and compression in the horizontal direction is firstly performed by using a horizontal scaling unit 5, processing of expansion, compression, frame rate conversion, synchronization and the like are secondly performed by using a vertical scaling unit 6 and commonly using memories used in scaling processing in the vertical direction and finally, color space conversion or inverse gamma processing is performed by using a picture quality improving unit 8 thereby converting the picture signals into picture signals S6 having a predetermined format.

Abstract: A multi-standard television receiver in accordance with the present invention includes a plurality of video signal processing blocks having tristate functions at their output terminals, at least one memory block used in common for a plurality of video signal processing blocks and a video signal processing selection means for selecting one of the video signal processing blocks and independently controlling the output terminals of the video signal processing blocks using elements having a tristate function and can reduce power consumption by working only a selected video signal processing block and stopping the other video signal processing blocks. Further, using elements having a tristate function, possibility of element breakdown at selection and control of the elements can be removed.

Abstract: A liquid crystal display device is composed of a liquid crystal panel including a plurality of pixels and a plurality of data signal lines, and a panel control unit CNT for controlling the liquid crystal panel so that a selected one of a high vision signal image and an NTSC signal image can be displayed. The control unit includes an auxiliary video signal generating circuit for generating an auxiliary video signal representing an auxiliary image to be displayed in first and second remainder areas provided on both sides of a display area for displaying an NTSC signal image on the screen of the liquid crystal panel. The control unit further includes a circuit for driving the data signal lines according to results obtained by sampling the auxiliary video signal in a horizontal blanking period of an NTSC video signal and the NTSC video signal in a period excluding the horizontal blanking period from one horizontal scanning period of the NTSC video signal.

Abstract: An automatic wide screen display apparatus and method of a TV set according to the present invention determine the presence of a wide screen video signal and detect an aspect ratio data of an inputted video signal based on the determination using a vertical synchronizing signal. The apparatus and method further perform communications using a protocol defined between a main microcomputer for controlling the screen deflection and an exclusive wide screen microcomputer for detecting the aspect ratio of the inputted video signal in order to automatically display the wide screen image in accordance with the inputted video signal, and control an integrated deflection device in accordance with the communication result to control the screen deflection.

Abstract: A receiver which receives both HDTV and NTSC signals, and a method for selecting received signals, are provided. According to this receiver and method, a broadcasting mode and a channel mode are set by the user. When the broadcasting mode is set to be an NTSC mode, only an NTSC signal is selected to be displayed. When the broadcasting mode is set to be an HDTV mode, only a high-definition (ATV) signal is selected to be displayed. When the judged broadcasting mode is an automatic mode, a judgement is made by the receiver whether an NTSC signal exists in a received signal. If no NTSC signal is present in the received signal, the ATV signal is selected for display. If the NTSC signal exists in the currently-received signal, selection between NTSC and ATV signals is made based on the channel mode set by the user. If the channel mode is set to NTSC, then the NTSC signal is selected for display. If the channel mode is set to HDTV, then the ATV signal is selected for display.

Abstract: A display apparatus includes a luminance change detecting unit for detecting change of luminance of a cathode ray tube, a deflection size control quantity adjusting unit connected to the luminance change detecting unit for stabilizing a deflection size by changing a deflection size correcting quantity at different rates of change for a low luminance range and a high luminance range, respectively, on the basis of the detected change of luminance. The deflection size control quantity adjusting unit generates a proper deflection size control quantity adjusting voltage by synthesizing a high frequency component and a low frequency component contained in a signal indicating the luminance change with different gains, respectively.

Abstract: There is provided an image processing apparatus which comprises an inputting part for inputting an image signal, an attenuating part for attenuating a predetermined frequency portion of the image signal inputted by the inputting part, and a controlling part for controlling an attenuation characteristic of the attenuating part for attenuating the predetermined frequency portion, in accordance with a compression ratio of the image signal inputted by the inputting part. There is also provided an image processing apparatus which comprises an inputting part for inputting an image signal, an enhancing part for enhancing a high frequency band of the image signal inputted by the inputting part, and a controlling part for controlling a high-frequency-band enhancement characteristic of the enhancing part in accordance with a compression ratio of the image signal inputted by the inputting part.

Abstract: An automatic picture size control method for a semiwide-screen television receiver. According to the method, levels of left and right edge portions in all active period of one horizontal scanning line of a received television signal are sampled, and how many times a sampled level becomes a black level for a predetermined time is detected and counted. Thereafter, a size of a displayed picture is designated as a plus picture size or a normal picture if a counted value is larger than a predetermined first value, or smaller than a predetermined second value, respectively.

Abstract: A digital video signal reception apparatus comprising a multiplexer selection controller for outputting a plurality of control signals according to a format of a compressed input digital video signal, a decoder for decoding the compressed input digital video signal, a frame rate conversion circuit for convening a frame rate of the decoded digital video signal from the decoder into a desired value under the control of the multiplexer selection controller, a multiplexer for selecting one of the decoded digital video signal from the decoder and an output video signal from the frame rate conversion circuit under the control of the multiplexer selection controller, a decimation circuit for performing a decimation operation to convert the number of horizontal scanning lines of an output video signal from the multiplexer into a desired value, a display mode conversion circuit for performing a display mode conversion operation so that an output video signal from the decimation circuit can be displayed in a desired di