Abstract: A display device includes: a monitor and receiving set having a video signal receiving section, a display section, an image quality control section, a first control signal transceiver, and a first control section; and a control and transmission set having a television broadcast receiving section, a video signal input section, a video signal transmitting section, a second control signal transceiver, a key input section, and a second control section. The Power consumption of a first radio transmission path formed by the video signal transmitting section and the video signal receiving section is larger than that of a second radio transmission path formed by the first and second control signal transceivers. A control signal for a user interface is communicated by the first and second control signal transceivers. Only the second radio transmission path of the first and second radio transmission paths is communicable in a standby state.

Abstract: A display device includes: a monitor and receiving set having a video signal receiving section, a display section, an image quality control section, a first control signal transceiver, and a first control section; and a control and transmission set having a television broadcast receiving section, a video signal input section, a video signal transmitting section, a second control signal transceiver, a key input section, and a second control section. The Power consumption of a first radio transmission path formed by the video signal transmitting section and the video signal receiving section is larger than that of a second radio transmission path formed by the first and second control signal transceivers. A control signal for a user interface is communicated by the first and second control signal transceivers. Only the second radio transmission path of the first and second radio transmission paths is communicable in a standby state.

Abstract: A method for storing status information prior to shutdown of a video monitor due to a failure. An indication of an operational parameter is obtained. Based on the indication, it is determined if the failure occurs warranting shutdown. If the failure occurs, status information is stored in a non-volatile memory for later retrieval during repair. A shutdown sequence is generated to disable the video monitor.

Abstract: An OSD including a display device for displaying and storing OSD data sets is set forth. The OSD includes an alignment system, associated with the display device. The alignment system aligns a first OSD data set with a second OSD data set. Aligning the OSD data sets reduces noise from the display device when the second OSD data set replaces the first OSD data set on the display system. A method of reducing noise in an OSD, including a memory device having memory cells for storing data, is also set forth. The method reduces noise in updating the OSD. The method includes the following steps. First, a no operation (NOP) code is stored in the memory cells where no change in data is required to update the OSD. Next, the OSD is updated by storing updated data in the memory cells where a data change is required to update the OSD.

Abstract: The present invention is a method and apparatus for generating auto sizing and position data on a video monitor in response to a plurality of video signals. Basic parameters are determined based on the video signals; and derived parameters are calculated using a standardized formula from the basic parameters. The basic and derived parameters provide the auto sizing and positioning data.

Abstract: The present invention relates a method and system for providing aging of a cathode ray tube. The system comprises a video processing circuit that is configured to generate a first luminance signal and a second luminance signal. The system also comprises an electron gun located in the cathode ray tube, that is coupled to the video processing circuit. The electron gun is configured to operate at a first luminance level corresponding to the first luminance signal for a first predetermined period of time, and a second luminance level corresponding to the second luminance signal for a second predetermined period of time.

Abstract: A video display apparatus for controlling the brightness of a display screen having an on-screen display portion in which the on-screen display can be satisfactorily read regardless of the picture brightness includes a display screen, circuitry for displaying on the display screen an on-screen display portion showing adjustment data for the video display apparatus, and circuitry for maintaining the brightness of the on-screen display portion substantially constant while the brightness of the display screen is changed. Also, a method for using the apparatus includes controlling the brightness of the display screen of the video display apparatus having an on-screen display portion while maintaining the brightness of the on-screen display portion substantially constant.

Abstract: A system for processing a video signal is described. Components of the video signal, such as the horizontal sync signal, undergo time delays as the signal propagates and is processed by circuit elements. In order to properly align the components of the video signal for further processing, compensation for the different time delays is introduced.

Abstract: A method and apparatus for centering an active video signal on a display screen is described. In one embodiment, the method includes calculating an initial positioning value, which corresponds to an initial position of the active video signal on the display screen. A target positioning value is then determined using linear interpolation. The target positioning value is a rough estimate and provides a big pre-jump of the active video signal from the initial position to a target position, which positions the active video signal near the center of the display screen. A bi-sectional fine tuning technique may then be utilized to center the active video signal on the display screen. This method may be performed using a feedback loop that comprises a microcontroller, a digital signal processor, and an on-screen display circuit.

Abstract: Determining a phase shift compensation for automatically centering an image by measuring a start time delay between a horizontal scan line signal and an active video signal, measuring an end time delay between the active video signal and the horizontal scan line signal, and computing a phase shift for a horizontal flyback signal using the start time delay and the end time delay. A system to center an image on a monitor includes a video processing circuit and a rasterizer. The video processing circuit receives a video signal and measures a start time delay and an end time delay between a horizontal scan line signal and an active video signal. The circuit generates a phase shift used to generate a horizontal flyback signal using the measured start time delay and the end time delay. The rasterizer receives the output of the video processing circuit to control a scanning element.

Abstract: The present invention is a method and apparatus for selecting a capacitor value corresponding to a horizontal frequency in a video monitor. The technique determines the horizontal frequency and creates a limit on a default capacitor value which is obtained from the determined horizontal frequency. An updated value is compared with the limit to generate a comparison result. The capacitor value between the default capacitor value and the updated value is selected based on the comparison result.

Abstract: In a display monitor, a horizontal synchronization signal having a horizontal scanning frequency is received by a first circuit. A vertical synchronization signal having a vertical scanning frequency is received by a second circuit. A moire correction signal that is proportional to a horizontal resolution of the displayed image is generated by dividing the horizontal scanning frequency by the vertical scanning frequency.

Abstract: A video display monitor having a plurality of power-save modes that are automatically controlled by a computer includes a display element for emitting light of at least two colors and circuitry for controlling the period of light emission of each color to correspond to the different power-save modes. Also, a method for displaying the power-save modes of a computer video display monitor having a plurality of power saving modes that are automatically selected by the computer uses a display element capable of emitting light of at least two colors and includes the steps of detecting a power-save mode among the plurality of power-save modes and varying the period of light emission of each color to correspond to the different detected power-save modes.

Abstract: The present invention relates to a multi-frequency display system and method for providing sharpness enhancement. The system comprises a sharpness enhancement circuit that is configured to receive a first and a second input video signal, where the first input video signal operates at a first frequency, and the second input video signal operates at a second frequency. The system further comprises a controller circuit coupled to the sharpness enhancement circuit, that is configured to generate a first sharpness enhancement signal corresponding to the first frequency and a second sharpness enhancement signal corresponding to the second frequency. The sharpness enhancement circuit generates a first control signal in response to the first input video signal and the first enhancement signal, and the sharpness enhancement circuit generates a second control signal based on the second input video signal and the second enhancement signal.

Abstract: The present invention relates to a multi-frequency display system and method for providing color convergence. The system comprises a convergence circuit that is configured to receive a first set and a second set of color input signals. The first of color input signals operates at a first frequency, and the second set of color input signals operates at a second frequency. The system also comprises a controller circuit coupled to the convergence circuit, that is configured to generate a first convergence signal corresponding to the first frequency and a second convergence signal corresponding to the second frequency. The convergence circuit generates a first control signal in response to the first set of color input signals and the first convergence signal. The convergence circuit generates a second control signal based on the second set of color input signals and the second convergence signal.

Abstract: The present invention discloses a method and apparatus for providing error detection capability for initialization data stored in a non-volatile memory used in a video monitor. The method comprises the steps of: (1) storing N test values in N distinct locations in the non-volatile memory; (2) reading the N stored test values from the non-volatile memory, each test value being read for K times; (3) selecting N read test values representative of the N stored test values; (4) comparing the N read test values with N corresponding check values; and (5) if the N read test values are equal to the N corresponding check values, reading the initialization data from the non-volatile memory.

Abstract: A video display apparatus capable of receiving multiple video input signals and of reducing its power consumption when each of those signals becomes inactive. Power consumption is reduced by selecting from a number of power saving modes. Each power saving mode has an associated recovery time as well as an associated amount of power savings. Recovery time is minimized by determining which of the video input signals is most likely to become active first, assigning a high priority to that signal and selecting a power saving mode based on characteristics of that signal. The likelihood of reactivation of a signal is determined by detecting the absence of normal vertical and/or horizontal synchronization signals.