Abstract: The present invention is directed to a method and apparatus for image edge enhancement with background noise reduction. According to the method and apparatus, background noise is reduced through use of feed forward gain control and threshold control of a sharpness control amplifier. In a prior art circuit, the sharpness control amplifier was controlled only by a sharpness control signal. By controlling the sharpness control amplifier also with a feed forward gain control and a threshold control, the circuit can be made to have background noise reduction while maintaining a continuous input/output characteristic curve. According to the input/output characteristic curve, when the amplitude of the transitions of the video signal are below a particular threshold value, the amplification of the sharpness control amplifier is reduced by the gain control, such that low amplitude noise signals are reduced.

Abstract: In a projection display system, a sample of the light output may be extracted and used to calibrate the display. A sample may also be used in multi-display systems (e.g., light walls), wherein the information from one display in the form of a light sample may be shared with one or more additional displays. In this way, certain characteristics of multiple displays may be correlated with one another to produce a uniform display output.

Abstract: A color television decoder or other signal processor has a gate controlling the passage of a notch filtered chrominance signal. A filter circuit produces a further chrominance signal which serves as the control signal for the gate.

Abstract: The present invention provides a display apparatus for discharging and removing needless cooling liquid consistently when the display apparatus for cooling a cathode ray tube with cooling liquid is fabricated and relates to a display apparatus for cooling cathode ray tubes with cooling liquid is provided with a cooling liquid container for containing cooling liquid for cooling the cathode ray tubes, a sealing member for sealing cooling liquid in the cooling liquid container by plugging a cooling liquid charging hole formed on the cooling liquid container after cooling liquid is charged into the cooling liquid container, and a residual cooling liquid discharging outlet provided with connection to the sealing member and the cooling liquid container for discharging residual cooling liquid in the space between the sealing member and cooling liquid container to the outside though the space between the sealing member and the cooling liquid container.

Abstract: An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circuitry advantageously uses LC filters integrated onto the substrate in conjunction with image reject mixers to provide sufficient image frequency rejection. Filter tuning and inductor Q compensation over temperature are performed on chip. The filters utilize multi track spiral inductors. The filters are tuned using local oscillators to tune a substitute filter, and frequency scaling during filter component values to those of the filter being tuned. In conjunction with filtering, frequency planning provides additional image rejection. The advantageous choice of local oscillator signal generation methods on chip is by PLL out of band local oscillation and by direct synthesis for in band local oscillator.

Abstract: A rear-projection television set in which two different dynamic focusing waveforms are used. The first dynamic focusing waveform is used only to focus an electron beam in a CRT generating the blue component of the picture being displayed. The second dynamic focusing waveform is used to focus the electron beam in the CRTs generating the red and green components of the picture being displayed. In this way, the resulting picture is better focused without flare or blue edging and displays better color uniformity over the entirety of the television screen.

Abstract: A method for editing images by inserting information therein in an interactive system provided with a mutual communication structure between a client equipment and a server equipment, is provided. The information includes index data, subscriber data, video data and WB data. The edited images including the information inserted are stored in storage media, such as hard disks or optical disks, included in the server equipment employed in the interactive system. And, a method for playing back edited images information in response to a playback instruction for the edited images information requested by an interactive system subscriber by using the interactive system provided with a mutual communication structure between a client equipment and a server equipment is also provided.

Abstract: A synchronous signal detection circuit which detect a vertical synchronous signal and a horizontal synchronous signal from composite synchronous signal, including: a reset generation means for receiving an external composite synchronous signal and an external main clock signal to generate a reset signal at falling edge of the composite synchronous signal; a counter means being reset by the reset signal received from the reset generation means and for counting the main clock signal to generate first through fourth output signals; a vertical synchronous signal detection means for receiving the second output signal of the counter means and the composite synchronous signal to detect the vertical synchronous signal of the composite synchronous signal and generating the vertical synchronous signal; and a horizontal synchronous signal detection means for receiving the third and the fourth output signals of the counter means and the reset signal of the reset generation means to detect the horizontal synchronous signa

Abstract: An on-screen display system is adapted for displaying OSD information on an OSD background portion which is selectively filled with either an half tone video image or a background raster of a specific color selected by a user, or which is filled by superimposing the half tone video image and the half tone background raster selected by the user. Mixing and amplifying circuits are provided for each of three red/green/blue (R/G/B) channels. Each of the three mixing and amplifying circuits receives a video signal and an OSD signal of a respective channel, mixes the video signal and the OSD signal according to a video selection signal and an OSD selection signal, amplifies a mixed signal, and outputs an amplified image signal to a display. A selection signal generating circuit receives OSD signals for R/G/B channels, a video/OSD switching signal, a half tone signal, and OSD control signals generates and outputs the OSD selection signal and the video selection signal.

Abstract: A method and apparatus for displaying a video signal is described. A video signal is received representing an image having a first aspect ratio, with the image having a top and bottom edge. An edge modification signal is generated. The image is displayed on a display having a second aspect ratio with the top and bottom edge modified in accordance with the edge modification signal. Accordingly, burn lines are minimized through use of the edge modification signal to reduce brightness levels at the top and bottom edge of the image.

Abstract: A method and system for interactively creating a movie from a still image in a digital imaging device that includes a display screen. The method and system include determining a path of panning across the still image, generating image frames along the path of panning, and then displaying the image frames for a predetermined time interval on the display screen to play the movie.

Abstract: A method and apparatus for controlling access to television programming uses a remote control device. The remote control device contains program control data which limits the viewer's access to television programming. The program control data is created and modified by a user with the master control user id assigned to the remote control device. The remote control device is optionally assigned one or more user ids for creating, maintaining, and in one embodiment activating a user-customizable profile which controls programming access according to the users preferences. The program control data, user profile data, and related circuitry is stored in the remote control device, or alternatively in the television receiver or a control device attached to the television receiver.

Abstract: A radio receiver includes first and second intermediate-frequency amplifier chains respectively supplying first and second final intermediate-frequency responses to a digital television (DTV) signal selected for reception; first and second analog-to-digital converters for digitizing the first and second final intermediate-frequency responses; QAM synchrodyning circuitry for generating real and imaginary sample streams of interleaved QAM symbol code by synchrodyning the digitized first final intermediate-frequency response to baseband, providing the selected DTV signal is a QAM signal; and VSB synchrodyning circuitry for generating a real sample stream of interleaved VSB symbol code by synchrodyning the digitized second final intermediate-frequency response to baseband, providing the selected DTV signal is a VSB signal. The first and second intermediate-frequency amplifier chains share at least one local oscillator.

Abstract: The projection image display apparatus includes a plurality of image generating sources for generating three primary colors, including red, green, blue image light, respectively, and a projection lens containing a plurality of lens elements provided in correspondence with each of said image generating sources for enlarging/projecting images displayed by the image generating sources onto a screen.

Abstract: A method and device for keyframe-based video displaying using a video cursor frame in a multikeyframe screen. Keyframe-based displaying of a video presentation enables a user to select among keyframes, and based on the selecting displays a substantially continuous video stream relating to the presentation. In particular, various keyframes are displayed in parallel in a reduced and static video format, and the displaying is controlled as starting from a particular active key frame which subsequently acts as a dynamic cursor frame within the video format. The cursor may be dynamic video plus dynamic audio, dynamic video alone, or static video per interval plus dynamic audio.

Abstract: A television receiver receiving an analog video signal, comprises additional information detecting means for separating and extracting an additional information code from the analog video signal, and outputting the additional information code; additional information recording means for recording the additional information code output from the additional information detecting means; additional information writing switch means for passing or blocking the additional information code that is output from the additional information detecting means toward the additional information recording means, in response to a control signal; conversion means for converting the additional information code output from the additional information detecting means or the additional information code reproduced from the additional information recording means into a character or an image; and signal synthesizing means for synthesizing the analog video signal and the additional information that has been converted into a character or an

Abstract: An audio input interface (122) receives a digital audio signal and identifies an audio bitstream which is optionally decrypted by a decryption unit (123), and decoded by an audio decoding unit (124). An audio digital to analog converter (126) converts the decoded audio bitstream to an analog audio signal which is optionally decrypted by an audio analog decryption unit (127). A video input interface (142) receives a digital video signal and identifies a video bitstream which is optionally decrypted by a video digital decryption unit (143), and decoded by a video decoding unit (144). A video digital to analog converter (146) converts the decoded video bitstream to an analog video signal that is optionally decrypted by a video analog decryption unit (147). An analog transmitter (150) mixes the analog audio signal and analog video signal and transmits an analog wireless output signal to an analog wireless device (110).

Abstract: A method of increasing the frame rate of an image of a speaking person comprises monitoring an audio signal indicative of utterances by the speaking person and the associated video signal. The audio signal corresponds to one or more fields or frames to be reconstructed, and individual portions of the audio signal are associated with facial feature information. The facial information includes mouth formation and position information derived from phonemes or other speech-based criteria from which the position of a speaker's mouth may be reliably predicted. A field or frame of the image is reconstructed using image features extracted from the existing frame and by utilizing the facial feature information associated with a detected phoneme.

Abstract: The first auxiliary memory 11a stores background image information in the form of digital data, and the second auxiliary memory 11b stores sound information in the form of digital data. When a request is transmitted from the terminal 36 to the information supplying device 28, a background image information of a genre, to which the requested song belongs, is retrieved from the first auxiliary memory 11a, packetized by the video packetizer 5, and outputted to the multiplexer 9. A sound information for the requested song is retrieved from the second auxiliary memory 11b, packetized by the audio packetizer 6, and outputted to the multiplexer 9. The background image information and the sound information are combined into a single packet data train and outputted to the terminal 36.

Abstract: A self-diagnosing system for a television receiver (TV) which enables a user to personally solve simple problems caused by his inexperience in using a TV without need of the product manual or the repair service of an A/S center. The system includes a key matrix including a key for determining a self-diagnosing mode and keys for selecting self-diagnosing menus on the problems, a control section for identifying a corresponding example of the problem when the keys on the key matrix are selected, and providing instructions as to how to solve the problem through a video and/or audio signal, a storage section for storing at least one instructions to solve the problems and providing the instructions to the control means under the control of the control section, and an output section for outputting the video and/or audio signal provided from the control section to a cathode ray tube.