摘要:
A video signal transmission system, wherein on the transmission side, digital video signals representing three primary colors is time-division-multiplexed for conversion into a video data train, a packet including the video data train and rate information for each period based on the period of the transmission clock signal, and the packet is sequentially transmitted in synchronism with a transmission clock signal as a transmission signal, while on the reception side, a reception clock signal is generated in synchronism with each bit of the transmission signal received through a cable, the rate information is detected from the packet in the transmission signal, a reproduction reference clock signal is generated, the video data train in the transmission signal is separated into data of each of three primary colors, and the separated data of each of three primary colors is output in synchronism with the reproduction reference clock signal as the digital video signal.
摘要:
A two-dimensional code pattern includes: a boundary pattern in which each of pixels in a group are set into a turn-on state or a turn-off state; a rotation detection pattern in which each pixel belonging to a group in each block is set into the turn-on state or the turn-off state by a light emitting pattern which can detect a rotational angle upon reading of the block; and an information pattern in which both of each pixel belonging to a first quadrant region in the block and each pixel belonging to a third quadrant region are set into the turn-on state or the turn-off state according to first information data and both of each pixel belonging to a second quadrant region and each pixel belonging to a fourth quadrant region are set into the turn-on state or the turn-off state according to second information data.
摘要:
An input system (1) comprise: a display (11) for displaying an image including coordinate information on the display surface; a plurality of indicators (12) having (i) a detecting means for detecting the image displayed on the display surface, and (ii) a transmitting means for transmitting transmission information generated according to the coordinate information contained in the detected image; and a controller (13) having (i) a receiving means for receiving the transmission information, (ii) a generating means for generating drawing information indicating the path along which each of the indicators moves on the display surface according to the transmission information, and (iii) a control means for controlling the display so as to perform the drawing processing corresponding to the drawing information generated by the generating means. The display displays an image by emitting a plurality of pulses and displays the coordinate information by using part of the pulses.
摘要:
A data transmission terminal apparatus and a data transmission method for maintaining a data transmission between the terminals irrespective of the state of a clock signal associated with a transmission data packet. The data transmission terminal apparatus multiplexes an image data signal and an other data signal to generate a data packet synchronized to a reference clock signal included in the image data signal, and relays the generated data packet to a transmission path. The apparatus comprises a first packet generating part for multiplexing the image data signal and the other data signal to generate an image data packet, a second packet generating part for multiplexing the other data signal and dummy data to generate a dummy data packet, a clock monitoring part for monitoring the reference clock signal to generate a state indicating signal indicative of the state of the reference clock signal, and an output relaying part for switching between the image data packet and the dummy data packet in accordance with the state indicating signal for relaying to the transmission path.
摘要:
An object of the present invention is to provide a method and device for reading an information code in which an information code displayed on a display can be read without increasing the circuit size of the display device. To read the information code displayed on the display in a predetermined area during each frame display interval, a synchronization signal synchronized with each of the frame display intervals is generated based on noise emitted from the display, and the information code is restored from a captured image signal obtained by capturing a screen of the display as an image in accordance with the synchronization signal.
摘要:
It is an object to provide a reading apparatus of an information code, a reading method, and a display reading system of the information code, in which even if symbol areas serving as references when sampling a photograph image signal obtained by photographing a display screen are not provided in the information code, information code data representing the information code can be obtained from the photograph image signal. When reading the information code displayed on a display apparatus, first, an image signal obtained when all pixel cells of the display apparatus have emitted light is extracted as a first image signal from the photograph image signal obtained by photographing the display screen of the display apparatus. Further, an image signal obtained for a period of time during which the information code is displayed is extracted as a second image signal from the photograph image signal. By detecting a point of a center of gravity of the light emission of each of the pixel cells based on the first photograph image signal and sampling the second photograph image signal at the point of the center of gravity of the light emission, the information code data representing the information code is obtained.
摘要:
An object is to provide a display method and device for displaying an information code, in which an information code can be displayed on a display without affecting the image being displayed. A one subfield among N subfields is used as a subfield for displaying an information code as a two-dimensional code, and the other subfields are used as subfields for displaying a primary image, in a process in which intermediate brightness is displayed using the N subfields for each unit display interval.
摘要:
It is an object to provide a two-dimensional code pattern which can be precisely read out at a high speed, a two-dimensional code pattern display device, and its reading device.A two-dimensional code pattern according to the invention includes: a boundary pattern in which each of pixels arranged in an endmost column and each of pixels arranged in an endmost row in a block of pixels arranged in N columns×M rows are all set into a turn-on state or a turn-off state; a rotation detection pattern in which each pixel belonging to a predetermined second pixel group in each block is set into the turn-on state or the turn-off state by a light emitting pattern which can detect a rotational angle upon reading of the block; and an information pattern in which both of each pixel belonging to a first quadrant region in the block and each pixel belonging to a third quadrant region are set into the turn-on state or the turn-off state according to first information data and both of each pixel belonging to a second quadrant region and each pixel belonging to a fourth quadrant region are set into the turn-on state or the turn-off state according to second information data. When the two-dimensional code patterns are read out of a display screen or sheet surface on which the plurality of two-dimensional code patterns have been formed in a matrix form, first, the display screen or printed matter is photographed every photographing range corresponding to the block, thereby obtaining a photograph image signal. Subsequently, a point at which the boundary patterns cross each other is detected as a block reference point from the photograph image signal. The first and second information data are respectively extracted on the basis of the turn-on state and the turn-off state of each pixel belonging to a region corresponding to an existing position of the block reference point in the photographing range.
摘要:
A small sized digital Nyquist filter having a high processing speed is provided. A delay in a delay element in the digital Nyquist filter is synchronized with a symbol rate of an input signal, and filtering coefficients at respective taps in the filer are sequentially selected synchronously with a sampling clock in accordance with a predetermined procedure, thereby reducing the number of taps to 1/oversampling number.
摘要:
A signal transmitting and receiving device and a signal transmitting and receiving method which can reduce power consumption in a terminal device in a standby state in an optical and electric communication system. The signal transmitting and receiving device is for transmitting and receiving an information signal through a predetermined transfer path between terminal devices each of which transmits and receives the information signal while controlling an operation thereof in a self-sustaining manner based on an internally-generated signal. The signal transmitting and receiving device includes: a signal relaying part for relaying the information signal between each of the terminal devices and the transfer path; a device-state detecting part for generating a state indication signal indicating a state of the terminal device based on the internally-generated signal; and a power controlling part for controlling power supply to the signal relaying part based on the state indication signal. The internally-generated signal may include a standby signal and a clock signal in the terminal device.