Abstract: A control device controls a television. The control device includes a touch module. The control device displays a menu containing a number of soft keys on a screen. The soft keys are activated to control the television to carry out corresponding functions. All positions on the menu are associated with all positions on the touch module correspondingly. As a result, a user can select desired soft keys to carry out corresponding functions by viewing the menu on the television and touching the touch module, rather than viewing the touch module.

Abstract: A feedback circuit for restoration of DC in electrical signals is presented. A sample pulse representing a DC portion of an electrical signal is generated. The sample pulse triggers a sample and hold circuit to acquire the correct offset voltage in the electrical signal during this DC portion. The offset voltage feeds back through a summing node to the electrical signal thereby restoring the video signal to the desired DC voltage level with respect to ground.

Abstract: A display apparatus includes a signal input unit through which an image signal is input, the image signal comprising a synchronization signal and an active signal; an adjustment signal generating unit that generates an adjustment signal; a signal processing unit that receives the adjustment signal and adjusts the image signal based on the received adjustment signal; and a controller which analyzes the input signal and controls the adjustment signal generating unit to change characteristics of the adjustment signal if the adjustment signal does not lie within a blanking interval between the synchronization signal and the active signal. With this configuration, even when an image signal having a reduced blanking interval between the synchronization signal and the active signal is input, the adjustment signal can be generated within the blanking interval of the image signal, not within the active signal interval.

Abstract: An image signal input circuit includes an input terminal configured to receive an image signal, a clamp circuit configured to hold a sink chip voltage contained in the image signal to be a constant value, a level shift circuit that includes a first emitter follower having a first transistor and a first current source, and a second emitter follower having a second transistor and a second current source, a base of the second transistor being connected to an emitter of the first transistor, and that is configured to shift a level of the sink chip voltage which is held constant, and an electric current source configured to attract a base current of the first transistor.

Abstract: A feedback circuit for restoration of DC in video signals is presented. A sample pulse representing the back porch of an incoming video signal is generated from the horizontal sync signal. The sample pulse triggers a sample and hold circuit to acquire the correct offset voltage in the output signal during this back porch period. The offset voltage feeds back through a summing node upstream of either the circuit causing the offset or an input amplifier thereby restoring the video signal to the desired DC voltage level with respect to ground.

Abstract: A signal processing circuit includes an auto gain control circuit and amplifies a signal with an amplification ratio determined based on a synchronous signal level having a positive potential with respect to a black level included in a high definition television video signal. In consequence, during the processing of the high definition television video signal, the signal processing is performed with a desired amplification ratio.

Abstract: There is provided a system and/or method of monitoring media content. More specifically, in one embodiment, there is provided a method of monitoring operation of an electronic device having a plurality of signal inputs, the method comprising periodically collecting images from each of the plurality of signal inputs, storing the collected images for later evaluation if an image storage option is enabled, and sending the collected images for direct viewing if the image storage option is not enabled.

Abstract: According to an aspect of the invention, an information processing apparatus configured to be connected to a conversion adaptor having a video input connector and a video output connector, the apparatus including: a video output port complying with the first standard for connection of the video input connector; an image processing module configured to output a first signal when the video input connector is not connected to the video output port, the image processing module being configured to output a second signal when the video input connector is connected to the video output port; and a bias module connected to the video output port and the image processing module and configured to output a third signal to the video output port, the bias module being configured to change physical layer information of the first signal or the second signal.

Abstract: A feedback circuit for restoration of DC in video signals is presented. A sample pulse representing the back porch of an incoming video signal is generated from the horizontal sync signal. The sample pulse triggers a sample and hold circuit to acquire the correct offset voltage in the output signal during this back porch period. The offset voltage feeds back through a summing node upstream of either the circuit causing the offset or an input amplifier thereby restoring the video signal to the desired DC voltage level with respect to ground.

Abstract: The video signal processing circuit has a clamp circuit for clamping a composite video signal including a copy guard signal with amplitude of from white to black as well as a pseudo horizontal synchronization signal, a brilliant signal, and a synchronization signal. The circuit also has a synchronization signal separation circuit, which separates the synchronization signal from the composite video signal and a synchronization signal discrimination circuit, which identifies if the synchronization signal coming from the synchronization signal separation circuit has the same cycle as that of a horizontal synchronization signal, and which blocks the signal with the cycle shorter than the cycle of the horizontal synchronization signal, letting only the signal with the cycle of the horizontal synchronization signal pass.

Abstract: An apparatus, system and method for clamping a video signal input to a coupling capacitor (215) for providing a clamping voltage. A charging current is applied to the capacitor (215) via an amplifier (225) having a first input (227) coupled with the capacitor output and a second input (226) coupled to a reference potential, the amplifier (225) is responsive to the capacitor output signal and the reference potential for providing the charging current to the capacitor (215). The current has a linearly varying magnitude which is proportional to a difference between the capacitor output and the reference potential.

Abstract: A clamping circuit disclosed herein has two modes of operation which include both a bottom level and mid-level clamping mode for clamping automatically onto the sync tip of a video signal and customizably clamping onto the front porch, back porch/pedestal or anywhere within the signal. The clamping circuit (400) includes a clamping capacitor (404) that couples to an automatic clamping circuit portion (405) to automatically clamp the synchronization pulse of the video input signal to a first predetermined reference voltage (Vref1) of a first clamping pulse signal during an automatic clamping mode of operation. The automatic clamping portion (405) connects to the customizable clamping circuit portion (411) to clamp any portion of the video input signal to a second predetermined reference voltage (Vref2) of a second clamping pulse signal during a customizable clamping mode of operation. A buffer (416) connects between the customizable clamping circuit portion and the output node of the clamping circuit.

Abstract: A color video display signal processor comprises a source of a color difference signal and an analog to digital converter for converting the color difference signal to a digital signal. A potential divider is coupled to reference voltages of the analog to digital converter for generating a clamp voltage. A clamp arrangement is coupled to the color difference signal and to the analog to digital converter and receives the clamp reference voltage. In response to a clamp pulse the clamp arrangement couples said clamp voltage to said color difference signal.

Abstract: A method and apparatus within a television receiver for electronically aligning signals within the receiver by controlling support circuitry for an IF module. A video amplifier is coupled to an output of the IF module. A control voltage source (DAC 114) controls a DC level control circuit within the video amplifier (244) such that the video signal is amplified and DC level shifted to align the video signal with down stream circuitry.

Abstract: The method of displaying a monochromatic image on a color monitor and the image display apparatus display the monochromatic image on a color display device with red, green and blue cells as a unit pixel. In the method and apparatus, all density regions of the monochromatic image to be displayed are provided with bluish tints. The image data for the monochromatic image is output for display after it is allotted to red, green and blue data to satisfy following relationships: R data=kR·B data(0<kR<1) G data=kG·B data(0<kG<1), where symbols R, G and B denote red, green and blue, respectively and symbols kR and kG denote allotment ratios for R and G data to B data, respectively. By the method and the apparatus, the so-called “blue based” monochromatic films used in the medical field can be displayed in a format (characteristics) suitable for diagnostic purposes.

Abstract: A clamping circuit disclosed herein has two modes of operation which include both a bottom level and mid-level clamping mode for clamping automatically onto the sync tip of a video signal and customizably clamping onto the front porch, back porch/pedestal or anywhere within the signal. The clamping circuit (400) includes a clamping capacitor (404) that couples to an automatic clamping circuit portion (405) to automatically clamp the synchronization pulse of the video input signal to a first predetermined reference voltage (Vref1) of a first clamping pulse signal during an automatic clamping mode of operation. The automatic clamping portion (405) connects to the customizable clamping circuit portion (411) to clamp any portion of the video input signal to a second predetermined reference voltage (Vref2) of a second clamping pulse signal during a customizable clamping mode of operation. A buffer (416) connects between the customizable clamping circuit portion and the output node of the clamping circuit.

Abstract: A clamping circuit for supplying a clamped color signal to a gamma-correction circuit is provided with a clamping portion connected to a clamping voltage generating circuit. The clamping voltage generating circuit generates a clamping voltage in response to an individual control signal in such a way that the black level of a color signal coincides with the black level in an input/output characteristic of the gamma-correction circuit. The clamping portion adds this clamping voltage to the pedestal level of a color signal at a predetermined timing in response to a control signal, so as to absorb variations in black levels of the clamping levels and later-stage circuits including variation in the later-stage circuits.

Abstract: In a video stabilizing circuit for a display apparatus, the clamp levels of R, G and B chromatic signals are controlled by feeding back the output currents of respective R, G and B terminals so that real time responses can be made, as against the fluctuations of video output load, thereby obtaining high brightness displays. The circuit according to the present invention is characterized in that output currents of R, G and B terminals are fed back from video output sections to clamp level control sections. The potential of a cut-off control terminal of the video pre-amplifier is then varied in such a manner that, if the beam current sensed by the clamp level control section is large, the bias voltage of the chromatic signals is made small. If the beam current sensed by the clamp level control section is small, the bias voltage of the chromatic signals is made large. Therefore, during a high brightness display, fluctuations in the brightness of the high beams and low beams is reduced and display is improved.

Abstract: A device to automatically adjust video signals to a blanking level to realize a precise intended color by being fed back with video signals at the blanking level stored in an ASIC (application-specific integrated circuit), which stores video signals at a blanking level received in a flat display panel, and by generating clamp signals so as to realize a blanking level precisely, and a method therefor.

Abstract: Recent circuit concepts inject measurement lines, for cutoff and drive control of the cathode current, into each color channel during the vertical frame blanking period. Owing to the physically dependent exponential beam current characteristic profile as a function of the cathode control voltage VK, the exponent &ggr; of the characteristic profile and the ratio of two cathode components IK1 and IK2 may be used to form control reference values for cutoff and drive control, this process being started in each case from a fixed value of the exponent &ggr; or of the ratio of the two cathode currents IK1 and Ik2. However, it has been found that, if a fixed value is assumed for the exponent &ggr; or for the ratio of the two cathode currents IK1 and IK2, it is not possible to achieve an optimum result for displaying monochrome pictures. Thus, according to the invention, the exponent &ggr; is defined as a function of the color tube 1. The aim in this case is to reduce a &ggr;-dependent DC voltage offset u0f to zero.

Abstract: An apparatus having a selectable first mode of operation for clamping an input signal to a first reference level and a selectable second mode of operation for clamping a signal derived from the input signal to a second reference level.

Abstract: A video signal clamping circuit for adapting the DC level of a composite video signal to the processing range of a digital video signal processing device, includes an isolating capacitor in the analog video signal path and a controlled current source which is connected to a floating isolating-capacitor terminal and charges or discharges the isolating capacitor solely by means of a positive or negative clamping current, with the value and sign of the clamping pulses being digitally controlled by a comparator circuit which compares predetermined reference values of the composite video signal with mode-dependent comparison values.

Abstract: An image processing apparatus includes an analog image signal clamp and an A/D converter that converts the analog image signal into an m bit digital signal. The clamp is controlled in accordance with an n+1 (m>n) bit digital image signal converted by the A/D converter and an n bit digital image signal portion of the m bit digital image signal is processed.

Abstract: A video signal processor for controlling a displayed image on a CRT having a cathode electrode and a grid electrode includes a generator for generating a brightness reference signal, an adder for adding the brightness reference signal to a black level in a blanking period of an input video signal. The added brightness reference signal is applied to the cathode electrode though a current detector for detecting a current of the added brightness reference signal. A current level signal produced from the current detector is used for determining and clamping the peak of a control voltage applied to the grid electrode such that a voltage difference between a peak of the added brightness reference signal and the peak of the control voltage is maintained constant.

Abstract: An object of this invention is to reduce level differences and errors in a luminance signal and color difference signals. In order to achieve the above object, an image pickup apparatus has an image sensor for photoelectrically converting an object image and a plurality of delay lines for delaying a video signal by one horizontal period, so that a video signal derived from an output including a clock leakage component from the image sensor is input to the plurality of delay lines, including an adjustment unit for adjusting the signal level of the video signal at an input or output of at least one of the plurality of delay lines.

Abstract: An RGB preamplifier for a video display includes respective multipliers independently operable for adjusting the contrast of input primary and secondary video signals. The contrast adjusted video signals are added to form a combined display signal, the combined signal being applied to the first inputs of primary and secondary comparators each of which is also supplied with a respective reference DC level. The primary and secondary video signals are alternately nulled at horizontal line rate by nulling the corresponding multipliers. The primary comparator samples the combined signal when the secondary signal is nulled for clamping the DC level of the primary signal in relation to the primary reference DC level and the secondary comparator samples the combined signal when the primary signal is nulled for clamping the DC level of the secondary signal in relation to the secondary reference DC level.

Abstract: An image signal processing apparatus wherein the black level of an analog image signal is adjusted by controlling the clamp level of the inputted analog image signal. The clamped analog image signal is digitalized. Using the digital image signal offset to a first level during the blanking period, the black level adjustment of the analog image signal is carried out. The first level during the blanking period of the digital image signal corresponding to the analog image signal with the black level having been adjusted, is changed to a second level, allowing a correct and easy black level adjustment using a simple circuit arrangement.

Abstract: A clamp system for use in a television receiver having tuner and auxiliary video sources, comprises an IF AGC and video detector circuit having an AGC reference voltage input and an auxiliary video input signal clamp circuit having a reference voltage input. The detector circuit and the clamp circuit are each formed on a common integrated circuit along with a video switch for selecting video signals provided by said detector and clamp circuits. The integrated circuit further includes a reference voltage source and a bias generator for deriving the AGC reference voltage and the auxiliary input signal clamp voltage from the common source.