Abstract: The present invention relates to a stereo image measuring apparatus for displaying stereo images and effecting three-dimensional measurement and a correlation process on a screen for displaying the stereo images, and particularly to a stereo image measuring apparatus for making it possible to easily take hold of measuring points and to effect a correlation process after feature points have been extracted in the vicinity of the position where each cursor exists. Corresponding points for other image, which correspond to measuring points for one image, are searched. Each of display units serves so as to apply marks on the determined corresponding points based on the measured points and the result of the correlation process.

Abstract: A menu type multi-channel display system utilizing picture-in-picture (PIP) function and a page up/down mode. The present invention first comprises a first and second tuner to receive broadcasting signals and to output each of the broadcasting signals on a channel. The present invention further comprises a main screen selecting module to select either one of said first and second tuner or a line input signal and to output at least one main screen signal. The present invention further comprises a sub-screen selecting module to select either the first tuner, the second tuner, or a line input signal, and to then output a subscreen signal. The present invention further comprises a VCR signal processing circuit to screen-process the output signals from a reproduction output module of the main screen selecting module and to output a screen signal.

Abstract: A display is to be produced based on video signals having aspect ratios of 4:3 and 16:9. Controller 21 turns on switches SW1 and SW2 so that the digitalized video signal of the first picture is compressed at a rate of 3/8 in the time axis. Simultaneously, the video signal of the second picture is converted digitally, written into memory 14 in synchronization with the first picture video signal, read out based on a delay of 3H/8 from the synchronization with the first picture video signal, and sent to a digital processing circuit 13. The controller 21 controls the digital processing circuit 13 so as to compress in the time axis the video signal of the second picture at a compressing rate of 5/8. Also, the controller 21 controls a vertical amplitude switching signal generator 19 to adjust a vertical deflecting current in a deflecting circuit 18 based on an operation by the audience.

Abstract: An image display apparatus for displaying an image corresponding to an image signal selectively inputs a first image signal and a second image signal having an aspect ratio different from that of the first image signal. When the second image signal is input, the second image signal is converted into an image signal corresponding to the aspect ratio of the first image signal, and the converted image signal is supplied to an image display unit for displaying an image corresponding to the aspect ratio of the first image signal. Thus, it is possible to display an image in a manner easy to observe, and to effectively utilize the display picture surface.

Abstract: A system interactively controlled by a TV viewer remote superimposes portions of a scroll program guide over a basic programming signal for display on the viewer's display screen. A tuner has an input for receiving TV signals in a plurality of cable channels and an output for passing a signal of any selected one of said channels. A computer has an input for receiving any of a plurality of control signals from the TV viewer remote and an output for controlling the tuner to pass the signal of the selected one of the channels in response to one of the plurality of control signals from the TV viewer remote. The computer receives and stores a scroll input picture image signal containing local program guide data and generates a scroll output picture image signal consisting of at least a portion of the scroll input picture image signal. A combiner superimposes output picture image signal over the passed signal to provide a display signal for input to the viewer's display screen.

Abstract: An image display apparatus for displaying an image corresponding to an image signal selectively inputs a first image signal and a second image signal having an aspect ratio different from that of the first image signal. When the second image signal is input, the second image signal is converted into an image signal corresponding to the aspect ratio of the first image signal, and the converted image signal is supplied to an image display unit for displaying an image corresponding to the aspect ratio of the first image signal. Thus, it is possible to display an image in a manner easy to observe, and to effectively utilize the display picture surface.

Abstract: A television receiver has horizontal reducing filter and a vertical reducing filter independently responsive to a first filter control signal and a second filter control signal for reducing auxiliary luminance/chrominance signals indicative of a sub-picture at an arbitrary aspect ratio, and a display unit reproduces a main picture and a reduced auxiliary picture on a screen in an overlapped manner.

Abstract: A plurality of circuit blocks that output digital signals with different sampling frequencies are connected to data buses in common. One of outputs of the circuit blocks is selected and the output is sent to a sampling rate converter circuit block through the data buses. Each of the circuit blocks has a tri-state buffer at its output stage. With an output enable signal, a desired circuit block can be selected.

Abstract: A processing unit (13) for providing secondary images in a video display system (10) in accordance with a choice of scaling ratios. The processing unit (13) scales the luminance component of an analog input signal by first using an analog low pass filter (22) for anti-aliasing, and then sampling (23) the data at a rate appropriate for the selected scaling ratio. The sampled data is processed by a digital filter (24), on a line-by-line basis, which provides weighted average values derived from the sampled data, on a line-by-line basis. A formatter (25) combines sampled chrominance data with the filtered luminance data, and selects lines for inclusion in the secondary image.

Abstract: A television signal processing circuit that includes a display device having a screen with an aspect ratio of m1:n1 (m1<n1), a circuit for displaying a main-picture originated from a first television signal on the display device, a processor for superimposing a sub-picture originated from a second television signal with a reduced size smaller than the main-picture on a part of the main-picture by thinning out the scanning lines of the second television signals, a selector for selecting the display mode of the main-picture between a normal display mode associated with a first number of scanning lines and a zoom display mode associated with a second number of scanning lines less than the first number of scanning lines as well as an expanded vertical amplitude, and a thinning-out processor responsive to the selecting means for thinning out the scanning lines of the sub-picture, either to display the sub-picture at an aspect-ratio of m2:n2 (m2<n2) by thinning out the scanning lines of the sub-picture to 1/a

Abstract: A television receiver system having PIP capability includes two NTSC tuners and signal processing arrangements, and an HDTV tuner and signal processing arrangement. In order to accomplish a CHANNEL SWAP function, a controller searches a table for data indicative of pairing of NTSC channels and HDTV channels, the NTSC channel associated with the main channel HDTV source is tuned by the PIP NTSC tuner, and the HDTV channel associated with the PIP NTSC source is tuned by the HDTV tuner. If the inset image has no paired HDTV channel then the second NTSC tuner is controlled to select the channel formerly tuned by the PIP NTSC tuner.

Abstract: A vertical filter circuit comprises a first shifter connected to an S/P converter, a calculation circuit connected to the first shifter and a second shifter, a buffer memory connected to the calculation circuit, first and second delay circuits each connected to the calculation circuit, and a second shifter connected to the first and second delay circuits. The first delay circuit comprises a first write selector, a first line memory, and a first read selector, all of which are connected in series. The second delay circuit comprises a second write selector, a second line memory, and a second read selector, all of which are connected in series.

Abstract: A sound mode switching method for multichannel selection a video tape recorder uses a first step of making judgements on the selections of a multi-voice mode setting key and a main picture switching key, a second step for deciding the sound mode and for storing the sound mode data into a memory, a third step for making a judgement on the selection of a channel for the main picture and for outputting the selected multi-voice mode signals, and a fourth step for replacing the sub-picture. A device for multichannel selection comprises a microcomputer, a multi-voice mode selecting circuit, and a multi-voice module. According to the present invention, during a multichannel selection, independent sound signals can be outputted for the respective channels under a multi-voice mode and therefore, different sound signals can be displayed and enjoyed in a unique manner depending on the contents of the pictures for the respective channels.

Abstract: A video display has a first format display ratio. A mapping circuit maps an adjustable picture display are on the video display. A signal processor generates first and second video signals from input video signals having one of different format display ratios. A switching circuit selectively couples video signal sources as the input video signals. The signal processor can manipulate data from the input video signals by selective interpolation and cropping. A synchronizing circuit synchronizes the first and second signal processors with the mapping circuit. A selecting circuit selects as an output video signal between one of the first and second processed video signals and a combination of the first and second processed video signals. A control circuit controls the mapping circuit, the first and second signal processors and the selecting circuit to adjust in format display ratio and image aspect ratio each picture represented in the output video signal.

Abstract: A television receiver has a system controller and a memory that supplies data to a display microcomputer for displaying a menu of features, such as picture-in-picture, a broadcast satellite receive mode, a reservation of recording mode. The displaying microcomputer displays the menu on a sub-screen portion of a cathode-ray tube. A user selects a feature using a remote controller and the system controller displays cursor that moves under user control, and displays non-selected items in half-tone brightness or a different color.

Abstract: A video signal mixing apparatus for mixing a playback composite video signal produced by playing a recording medium and a graphics composite video signal generated on the basis of video data read from a memory device, wherein a vertical synchronizing signal of the playback composite video signal is forcedly generated in response to a vertical synchronizing signal of the graphics composite video signal to make the number of horizontal scanning lines of the playback composite video signal coincident with the number of horizontal scanning lines of the graphics composite video signal.

Abstract: A video display system comprising: a first source of a first video signal representative of a first picture having a first display format ratio; a first memory having write and read ports, the first video signal being written into the first memory at a slower rate than the first video signal is read from the first memory, at least one of the ports of the first memory being selectively disabled to reduce the first display format ratio; a second source of a second video signal representative of a second picture having a second display format ratio; a video display having a wide display format ratio and synchronized with the first and second video signals; a second memory having write and read ports, the second video signal being written into the second memory at a slower rate than the second video signal is read from the second memory, at least one of the ports of the second memory being selectively disabled to reduce the second display format ratio; and, a multiplexer coupled to the first and second memories,

Abstract: A picture overlay system assures proper size and placement of picture overlays in simultaneous picture displays. The system comprises a video memory and a control circuit for writing and reading information from a video signal into and out of the video memory, the information relating to video data and field type. A reading circuit supplies information from the video memory synchronously with a display for another video signal. An interpolator selectively compresses and expands the information read from the reading circuit. The field type information undergoes the compression and expansion together with the video information. A decoding circuit decodes the field type information to identify first and second types of fields and an absence of valid video data. A multiplexer combines the video signals for simultaneous display, operating responsive to the decoding circuit.

Abstract: A television receiver comprising an improved interface circuit which automatically activates a PIP display of an auxiliary input (for example a videocassette or videodisc) when such an input is detected.

Abstract: A video display system comprises: a video display; first and second signal processors for cropping first and second video signals representative of first and second pictures; a circuit for generating a side-by-side display format of the pictures on the video display; and, a panning control circuit, responsive to panning command signals, for positioning said pictures in the side-by-side display format and for independently panning the pictures, as positioned. The panning control circuit generates independent fixed and variable delays for controlling line memories in the signal processors. Fixed delays control picture positions and variable delays control panning.

Abstract: The present invention relates to an apparatus and method for processing a picture-in-picture video signal for PIP display of a compressed sub-picture displayed within a main picture on advanced TV receivers. More particularly, the present invention relates to the apparatus and method for processing a PIP video signal of advanced TV systems which use real video data lines, as opposed to artifically generated lines of video data, as the interleaving line to interleave the present field being compressed, when vertically compressing a sub-picture video signal. Accordingly, the present invention provides a hardware of simple constitution and a PIP display with advanced resolution.

Abstract: A display apparatus comprising a field frequency converter for converting the field frequency of a parent-picture video signal; an aspect ratio converter for converting the aspect ratio of the video signal after the field frequency conversion; a child-picture processor for generating a child-picture video signal; and a switch for synthesizing the aspect-converted video signal with the video signal obtained from the child-picture processor. In one embodiment, the storage capacity of a memory required in the field frequency converter can be minimized. The apparatus further comprises a selector for selecting either the parent-picture video signal of the second aspect ratio or the parent-picture video signal of the first aspect ratio which has been converted to the second aspect ratio, wherein merely one switch is sufficient for synthesizing the video signal obtained from the child-picture processor with the selected parent-picture video signal of the second aspect ratio.

Abstract: An apparatus and a method for searching an input picture in a television receiver.

Abstract: A picture selector includes a controller such as a mouse controller for controlling the movement of a cursor on a display screen of a display device capable of performing multi-picture display. The cursor on the display screen is moved onto a desired one of plural displayed picture frames by manipulation of the mouse controller, and then the mouse controller is clicked to display the desired picture frame as a main picture frame.

Abstract: A power control apparatus for an audio/video system includes an audio/video center having a main controller, a sub-controller, a memory, a display, and a selector for selecting a signal for display. A number of other audio/video units are connected to the audio/video center and are controlled by the main controller through the sub-controller, which passes commands and connection requests in both directions between the other audio/video units and the main controller. Upon a connection request from one of the other audio/video units fed to the main controller, the main controller determines whether the connection is the same as a previous connection and, if not, after a set time has elapsed the main controller through the sub-controller turns off the power to the previously connected audio/video unit.

Abstract: A security and surveillance system (10) uses a processor (40) to generate an infrared coded signal for performing a specific function. A detector (12) monitors a zone of surveillance (A) and generates an activation signal in response to the detection of an intruder in the zone. The activation signal triggers the processor (40) to generate an infrared coded signal to perform a specific function corresponding to the triggered zone of surveillance (A). In a specific application, a camera switcher (38) transmits an appropriate camera signal to a television monitor (36) and infrared coded signals generated by the processor (40) control and command the television monitor (36) to display the images from the video camera (20) in response to an intruder detection.

Abstract: A circuit (10) for inserting a secondary video signal in a primary video signal. The primary and secondary video signals are combined forming a combined video signal having a primary video portion and a secondary video portion. The combined video signal is fed back to a feedback matching circuit (21) for measuring and comparing the phase, amplitude, and blanking level of a reference signal of the primary video portion and a reference signal of the secondary video portion of the combined video signal. The feedback matching circuit (21) makes an adjustment to the secondary video signal to reduce differences between the reference signals of the primary and secondary video portions of the combined video signal.

Abstract: The present invention relates to a novel method and system for providing high definition television receivers with a picture-in-picture (PIP) feature through the use of a reduced number of transform coefficients. The system comprises first decoding unit for decoding a main picture signal, second decoding unit for decoding a picture-in-picture signal by using a reduced number of transform coefficients including a d.c. coefficient, and position control means for providing a composite image composed of the main picture and the picture-in-picture on the screen. Interpolation of pixel data is performed by applying appropriate weight factors on neighboring pixel data based on the spatial relationship between the pixels and the heads generated by reduced motion vectors.

Abstract: A method for generating a picture-in-picture digital television frame comprises the steps of: converting a first analog television signal into a first digital frame comprising a first prescribed number of pixels; deriving a mean-only frame from the first digital frame, the mean-only frame comprising a second prescribed number of pixels; creating an insertion frame on the basis of the mean-only frame; and inserting the insertion frame into a second digital frame, thereby generating a picture-in-picture digital television frame. A Vector Quantization receiver/decoder comprises a mean-only decode section 20, a full decode section 30, and an image inserter 40.

Abstract: A gradation correcting apparatus, which can be effectively incorporated into various video devices, enables the display of a sub-display within the domain of main-display (i.e. Picture in Picture) and also enables automatic adjustment of each gradation of the display dependent on the characteristics of the respective input signal. By using both a window pulse and a main- and sub-display switching signal, gradation corrections of the displays are carried out such that either no gradation correction is applied to the sub-display or a proper correction is applied according only to the sub-display signal. In this apparatus, the luminance information related to the sub-display and the luminance information related to the main-display excluding that of the sub-display are independently inputted into a signal correction system, thereby allowing individual processing of this information.

Abstract: A video signal processing device comprises: a unit for extracting a first color burst signal from a first video signal; a unit for generating a first subcarrier in synchronism with the first color burst signal extracted from the first video signal; a unit for extracting a second chrominance signal and a second color burst signal from a second video signal; a unit for demodulating the second chrominance signal and the second color burst signal on the basis of the first subcarrier to obtain a demodulated second color signal and a demodulated second color burst signal; and an operating unit for performing operation process of the demodulated second color signal on the basis of the demodulated second color burst signal in a manner such that the demodulated second color signal is converted into a corrected color signal which is substantially the same as an imaginal second color signal which is obtained on the assumption that the second chrominance signal is demodulated on the basis of a second subcarrier synchroni

Abstract: Video luminance data from a video signal is selectably compressed and expanded in a first signal path including a first line memory. A second line memory in a parallel signal path processes video chrominance data from the video signal. A control circuit generates respective timing signals for writing data into each of the first and second memories and for reading data from each of first and second the line memories. A timing delay circuit for the control circuit, has video compression and expansion modes of operation. During the compression mode, reading of the second line memory is delayed relative to writing of the second line memory. During the expansion mode, writing of the first line memory is delayed relative to writing of the second line memory or reading of the second line memory is delayed relative to writing of the second line memory. The duration of the timing delays can be selected from a range of values.

Abstract: A general purpose scan converter for converting video signals from one scan rate to another scan rate. The scan converter accepts NTSC, PAL, EGA, VGA, or other inputs in standard video formats and convert them to be displayed on a monitor. Several modes of operation including continuous frame grabbing, grab and hold image, and dynamic scaling are provided. In addition, window sizing and window location options are under user control. The input sources for video may be selected, and a robust voltage controlled oscillator is provided for timing. The converter device operates continuously in real time and provides a high resolution output signal to a monitor.

Abstract: A system for processing audio and video components of a television signal provides for automatic control of closed caption signal display in response to the status of an audio muting feature. The system includes an operating mode in which enabling audio muting also enables the closed caption display and disabling muting disables generation of the closed caption display.

Abstract: Successively transmitted images are stored in frame memories the contents of which are displayed. The user can freeze a desired image in order to view it for a prolonged period of time. When the image thus frozen is released from the freeze mode, the content of the frame memory storing it continues to be displayed until anew image is stored in this frame memory. When a new image has been written in the frame memory and a stage is reached in which the image is to be displayed, display-setting information pertaining to this image is read out and the image is displayed in accordance with this information. In a case where the display-setting information indicates that the image is to be displayed in combination with a designated image transmitted earlier and it is determined that the storage destination of the designated image had previously been placed in the freeze mode, this means that an unrelated image is presently being stored at this storage location.

Abstract: A video system comprises a video display having a wide format display ratio for displaying a video signal. A signal processor has an interpolator and a first in first out line memory having asynchronous write and read ports for selectably expanding and compressing a picture represented by data in the video signal. The picture is cropped to define a subset of the picture for display by controlling writing of the data into the line memory. A microprocessor for controls provides control signals with selectable time durations and selectable phases relative to a synchronizing component of said video signal for selecting boundaries of the subset of the picture for display. The microprocessor can select the time durations and the phases responsive to user commands.

Abstract: A display apparatus informing of a programmed recording comprises a message generator for providing the programmed recording information a is displayed few seconds immediately prior to correspondence between a programmed before the present recording time and the current time in response to the inputting display interruption signal, an input selecting switch for selecting tuner signals and VCR regenerating signals, a picture-in-picture part for generating the main and sub-screens, and a Y/C processing part for processing the output signals of the PIP part outputting them to an output jack and a TV RF converter, respectively, wherein the interruption in watching TV is eliminated, and the troublesome key manipulations are eliminated.

Abstract: A television receiver having first and second tuners which can receive the same frequency band and display multiple-surfaces includes key inputting means for indicating that the display of a second tuner picture in a plurality of tuners is on or off and channel selection controlling means for making the second tuner an ordinary selected condition when the key inputting means indicates that the display of the second tuner picture is on and fixing the second tuner's local oscillation frequency so as to set a frequency received by the second tuner outside a receivable frequency band when the key inputting means indicates that the display of the second tuner picture is off. Thereby, mutual beat interference between the plurality of tuners is eliminated.

Abstract: A video signal synthesizer operable to provide a multiplex video signal for producing a picture-in-picture effect on a display screen of a display device, for example, a cathode ray tube. The video signal synthesizer utilizes a PLL (phase-locked loop) circuit to generate a carrier signal synchronized with a color burst signal contained in the composite video signal for the reproduction of the main picture. The carrier signal is first delayed by a delay circuit and then utilized to remodulate the sub-picture signal which has been compressed with respect to time. This remodulated sub-picture signal is then subjected to time-division multiplexing through analog switch assembly. The delay time of the delay circuit is set so that both color subcarrier signals of the main picture and sub-picture signals may be matched in phase. Hence, the time-division multiplexing of the main picture signal and the sub-picture signal is possible without altering the characteristics of the color composite video signal.