Abstract: A method of improving an image quality of a video signal, which is supplied on a frame-by-frame basis, includes extracting low frequency components from a video signal of an n-th frame, where n is a natural number excluding zero, subtracting the extracted low frequency components from a video signal of an (n+m)th frame to produce high frequency components, where no is a natural number excluding zero, and adding the produced high frequency components to the video signal of the (n+m)th frame. The extracted low frequency components include a horizontal component and a vertical component.

Abstract: An apparatus control system comprises a first and a second device located on a network, and a PC for transmitting a remote manipulation instruction to the first device. The first device executes a corresponding operation in accordance with the remote manipulation instruction from the PC, and redirects the remote manipulation instruction from the PC to the other device on the network. The second device executes a corresponding operation in accordance with the remote manipulation instruction redirected by the first device.

Abstract: Upon receipt of an MPEG stream, a time information converter modifies the PTSs of the audio data in the stream so that the timing for outputting the audio sound is delayed by the amount of time that is required for the processing of the video signal to be performed in a video signal processor while keeping the PTSs of the video data in the stream unchanged.

Abstract: A method of improving an image quality of a video signal, which is supplied on a frame-by-frame basis, includes extracting low frequency components from a video signal of an n-th frame, where n is a natural number excluding zero, subtracting the extracted low frequency components from a video signal of an (n+m)th frame to produce high frequency components, where no is a natural number excluding zero, and adding the produced high frequency components to the video signal of the (n+m)th frame. The extracted low frequency components include a horizontal component and a vertical component.

Abstract: A device control is disclosed for controlling a device with a high-priority signal without interference by a low-priority signal. Panel keys, which serve as a high-priority signal receiver unit, receives a high-priority signal. A panel key signal processing unit, which is a high-priority signal processing unit, processes the signal received by the panel keys. A remote control signal receiver unit, which is a low-priority signal receiver unit, receives a low-priority signal. A remote control signal processing unit, which is a low-priority signal processing unit, processes the signal received by the remote control signal receiver unit. A remote control signal reception control unit, which is a low-priority signal processing control unit, disables the processing in the remote control signal processing unit when the panel key signal processing unit is performing the processing.

Abstract: An image transmitting method is disclosed for reducing the load on a CPU of an image transmission apparatus. An image change monitoring unit provided in the image transmission apparatus monitors the latest image used to generate image data transmitted to an image reception apparatus via a network, and a subsequent image to determine whether or not the latest image has changed. An image capture unit captures the image after the image has changed to acquire the image when the image change monitoring unit determines that the latest image has changed.

Abstract: A cooling apparatus includes a tank for keeping a coolant liquid therein and including an air layer, a heat receiver in contact with a heat generating part for receiving heat therefrom, a radiator for radiating the heat absorbed by the coolant liquid, and a circulating mechanism for circulating the coolant liquid from the heat receiver through the tank, through the radiator and again to the heat receiver. The tank is mounted on the radiator. The radiator includes a coolant liquid circulating conduit for radiation which includes a width narrower at the middle position of the tank, and is divided by a gap at the middle position of the tank. The radiator includes cavities on both sides of a portion in which the gap in the coolant liquid circulating conduit is formed, each of the cavities having an area covered with the tank mounted on the radiator.

Abstract: A moving image distribution server for distributing to a reproducing apparatus moving image data including video data and audio data and capable of prescribing decoding times and reproducing times for the video data and the audio data, the moving image distribution server including a data storage unit for storing in advance the moving image data including information as to the decoding times and the reproducing times for the video data and the audio data, a phase adjustment variable storage unit for storing a predetermined phase adjustment variable, and a first rewriter for reading the moving image data stored in the data storage unit, and changing the information included therein as to the decoding times or the reproducing times based on the predetermined phase adjustment variable to adjust the phase relationship between the video data and the audio data.

Abstract: A moving image distribution system is capable of making phase adjustment of video data and audio data while preventing the cost of a display apparatus from increasing, by adjusting time information with a moving image distribution server. The moving image distribution server stores moving image data, reads the moving image data, changes information included therein as to decoding times or reproducing times of video data or audio data included in the moving image data based on a predetermined phase adjustment variable, and then distributes the moving image data. A reproducing apparatus receives the moving image data distributed from the moving image distribution server, decodes the moving image data according to the information included therein as to the decoding times and the reproducing times, and reproduces the moving image data.

Abstract: A projector selection system selects one of projectors from a computer which is connected to the projectors through a network. An identifier is displayed on each of the projectors by identifier assigning means and identifier display means. A preview image, which is a scale-down version of an image displayed on the screen by the projector, is acquired by preview image generating means and preview image transmitting means. The preview image is displayed on a dialog display area on the screen of the computer.

Abstract: An optical system for a display panel is disclosed. An optical system comprises a color separating portion for separating light that is emitted from a light source into a plurality of beams having different spectra; and a projecting portion for projecting the plurality of beams onto a plurality of divided areas of a predetermined range in the display panel, while sequentially switching the plurality of beams.

Abstract: A liquid crystal projector apparatus has a liquid crystal unit having a liquid crystal panel for modulating light, an incident side polarizing plate and an exit side polarizing plate disposed in front of and behind the liquid crystal panel along the optical axis, respectively, a first holder member for holding the liquid crystal unit, a first heat exchanger disposed in close proximity to the first holder member for dissipating heat generated by the liquid crystal unit and then conducted to the first holder member using a coolant liquid which passes through a first channel formed inside the first heat exchanger, a pump for circulating the coolant liquid, and a radiator for cooling the coolant liquid.

Abstract: A transmission rate adjustment device for supplying MPEG-TS at a desired transmission rate includes: a buffer; a buffer write unit for both sequentially writing to the buffer transport packets of the transport stream that have been read from an MPEG2-TS file and detecting time stamps in the transport stream; and a buffer read unit for transmitting to the MPEG decoder transport packets that have been sequentially read from the buffer at a transmission rate determined by a clock obtained by frequency-dividing a system clock of the MPEG decoder by a frequency division rate designated by a frequency division rate signal. The buffer read unit not only inserts NULL packets between transport packets, but also rewrites time stamps when adjustment cannot be realized by merely inserting the NULL packets.

Abstract: A video apparatus includes a processor for processing a video signal included in an input signal, a detector for detecting a vertical synchronizing interval of a synchronizing signal included in the input signal, a data saver for saving data for each vertical resolution of the video signal, the data being set in the processor for processing the video signal of the vertical resolution, and a controller for reading data from the data saver depending on the vertical resolution of the video signal, setting the read data in the processor, deriving a horizontal resolution of the video signal based on the vertical synchronizing interval detected by the detector, and changing the data set in the processor based on the derived horizontal resolution.

Abstract: An ultrasonic receiver receives an ultrasonic signal having a period in which an amplitude thereof progressively increases as time elapses. A pattern matching unit determines whether a comparative pattern, which is generated as a result of comparison between the respective maximum amplitude values of a plurality of successive waves of said wave signal and a threshold value set by a threshold setting unit, matches a reference pattern or not during the period of the ultrasonic signal. The pattern matching unit determines that the ultrasonic receiver has successfully received the ultrasonic signal if the comparative pattern matches the reference pattern.

Abstract: The present invention aims to provide an electronic pen that is able to prevent the reflection of an ultrasonic wave. An electronic pen according to the present invention has: a housing having a longitudinal axis and a write side tip along the longitudinal axis; at least an ultrasonic wave transmitter, the ultrasonic wave transmitter being arranged near the write side tip of the housing; and a controller for detecting a sensor orientation and for controlling transmission of the ultrasonic wave. The sensor orientation is an index that shows a rotational orientation of the housing about the longitudinal axis, the rotational orientation being directed at an ultrasonic wave sensor for receiving the ultrasonic wave that is transmitted from the ultrasonic wave transmitter. The controller selectively activates a part of the ultrasonic wave transmitter such that the ultrasonic wave is transmitted from the orientation which is directed to the sensor orientation.

Abstract: A display panel driver includes: a clock generator for generating a clock signal; a horizontal reference generating circuit having a first frequency divider for dividing the frequency of the clock signal; a vertical reference generating circuit having a second frequency divider for dividing the frequency of the output from the first frequency divider; a switch circuit having one input terminal to which an external vertical synchronizing signal is supplied and having another input terminal to which the output signal from the second frequency divider is supplied and which selectively output one of said input terminals; and a CPU that alters the oscillation frequency of the clock generator or the frequency division ratio at the first frequency divider when a switching between the input terminals of the switch circuit is performed.

Abstract: A projection display apparatus for combining image lights formed by two or more of different liquid crystal panels through a prism, and projecting the combined image light onto a projection plane through a projection optical system. The apparatus comprises a first optically transmissive substrate opposite an exit plane of the liquid crystal panel, a second optically transmissive substrate opposite an entrance plane of the prism, and at least one third optically transmissive substrate disposed between the first optically transmissive substrate and the second optically transmissive substrate, wherein the first optically transmissive substrate, second optically transmissive substrate, and third optically transmissive substrate are each provided with a polarizer for absorbing a predetermined polarized light component in a predetermined proportion, and the second optically transmissive substrate is adhered to the entrance plane of the prism.

Abstract: A synchronization processing circuit separates synchronizing signals from an input video signal, provides the synchronizing signals to a detection circuit, and further provides the input video signal that has no synchronizing signal to a scaler circuit. The detection circuit detects the horizontal synchronization frequency, the vertical synchronization frequency, the synchronization polarity, the synchronization type (Sep, CS, or GSync), the scan type, the image line number, the synchronization type (TriSync), and the vertical synchronization width from the synchronizing signals. A CPU determines the type of input video signal based on the detection results of the detection circuit. Based on the determination results, the CPU sets the signal processing for the input video signal in the synchronization processing circuit and in the scaler circuit.

Abstract: A tilt angle adjusting device has a shaft configured to be fixed to a bottom surface of a housing at least one end, and a moment transmission member connected to the shaft. The moment transmission member allows relative rotation between the shaft and the moment transmission member when a moment equal to or more than a predetermined value is applied about an axis of the shaft from the housing, and restricts the relative rotation when the moment is released. The moment transmission member includes a leg configured to be placed on a surface on which the housing is installed. The leg is provided with part of a bearing to support the shaft. The moment transmission member also includes a plate member to press an outer peripheral surface of the shaft. The plate member forms the rest of the bearing.