Abstract: The present invention provides an apparatus for expanding a serial communication port. The apparatus includes a first serial port, a second serial port and a processing and control module. The first serial port is used to transmit a first signal, and the second serial port is used to transmit a second signal. The processing and control module is coupled between the first serial port and the second serial port. The processing and control module includes a first serial bus host controller, a second serial bus host controller, a data forwarding unit and an expansion unit. The apparatus is connected between an electronic device and multiple peripheral devices, so that via the expansion unit, each peripheral device generates its own communication port on the electronic device.

Abstract: The present invention discloses a video adapter for installing video wall quickly. The video adapter includes a microcontroller unit; a number generating unit coupled to the microcontroller unit to set a number for one display in the video wall and transmit the number to the microcontroller unit; a first connector coupled to the display; and a second connector coupled to one end of a video and audio cable; wherein the microcontroller unit processes the number and transmits the number to a video and audio control device coupled to the other end of the video and audio cable; wherein the video and audio control device assigns corresponding video signals according to the number, so as to transmit the corresponding video signals to the display in the video wall.

Abstract: A system for editing preview images. The system includes at least one source end, a control terminal and at least one display end. The control terminal is coupled between the source end and the display end. The source end provides at least one image. The control terminal provides a user interface. The control terminal includes an image capture module, a previewing module and a media parameter module.

Abstract: A switching selector for selecting a power source from two power sources. It includes a controller, a detection circuit, a transistor and two groups of four transfer switches or relays, wherein the controller is a micro-processor and the detection circuit includes two transformers. Primary winding of each of two transformers is connected to two different power sources, and secondary winding of each of two transformers is connected to input of the controller. Output of the controller is connected to a base of a transistor for controlling the transfer switches. Each group of four transfer switches form a redundant switch for selecting one of the two power sources, where the four transfer switches are connected such that the selection function is not affected when any one of the transfer switches malfunctions.

Abstract: The utility model provides system and apparatus for communication between different interfaces. The system includes at least an image process module for processing at least an image signal produced from a least an industrial embedded system, a remote control module coupled to at least said image process module for receiving said processed image signal and transmitting it to a remote computer, wherein said remote control module further receiving a control command of said remote computer, and at least a control module coupled to said remote module for receiving and processing said command.

Abstract: The present invention provides a digital video broadcasting-terrestrial (DVB-T) system and modulation method thereof. The system comprises a transmission module and a receiving module. The transmission module modulates a video signal to a DVB-T signal. The receiving module receives the DVB-T signal via a transmission line and demodulates the DVB-T signal to the video signal, and at the same time, monitoring the signal-to-noise ratio (SNR) or bit error rate (BER), and quantizes them to a reference data. The receiving module transmits the reference data to the transmission module through the same transmission line. The system can determine a control parameter according to the reference data to set the modulation parameter of the DVB-T signal.

Abstract: A method for extending the range of isochronous USB data transfer, by providing a local extender and a remote extender, coupled respectively to the USB host and the USB device, and coupled to each other via a non-USB cable. After receiving a first In-token from the host, the local extender transmits a first data packet to the host, which contains a data payload having a non-zero length; the data is either generated by the first extender, or previously received from the USB device and stored in a buffer. The local extender forwards the first In-token to the USB device via the remote extender; in response, the USB device generates a second data packet containing requested data and transmits it to the local extender via the remote extender. The local extender stores the second data packet and transmits it to the host in response to a second In-token from the host.

Abstract: A method for increasing compatibility of DisplayPort includes: providing a first source device, a second source device, a controller, and a sink device, wherein the first source device is connected to the controller; the first source device transmitting a first image signal to the sink device via a main link for displaying the first image signal on the sink device; causing the controller to disconnect from the first source device and connect to the second source device; executing a simulation process to generate a DC level variation on an auxiliary channel between the controller and the sink device; the second source device transmitting auxiliary data to the sink device; the sink device transmitting link data back to the second source device; and the second source device transmitting a second image signal to the sink device via a second main link for displaying the second image signal on the sink device.

Abstract: An image processing apparatus is disclosed. The splitter duplicates an original image signal into a first image signal and a second image signal. The first signal converter converts the second image signal having a first image format to the second image signal having a second image format. The image processor stores the second image signal in the memory according to an enable signal and continuously compares whether the current frame of the second image signal is the same as the previous frame of the second image signal. If they are different, the image processor continuously receives the second image signal and stores it in the memory. If they are the same, the image processor stops receiving the second image signal. The second converter converts the second image signal having the second image format to the second image signal having the first image format.

Abstract: An automatic installation method for video wall comprises the following steps. In the step (a), it employs a control system to output a plurality of identifiable images to a plurality of video devices of the video wall. In the step (b), it employs an image capturing device to capture the plurality of identifiable images. In the step (c), based-on the plurality of identifiable images, it employs the image capturing device to determine position data for the video devices, frame dimension of each of the video devices and spacings between adjacent video devices, and calibrate the identifiable images to obtain a setting value thereof. In the step (d), based-on the position data for the video devices, the frame dimension of each of the video devices and spacings between adjacent video devices and the setting value, it employs the control system to install and set-up the video wall automatically.

Abstract: This invention discloses a system, device and method for transmitting both non-video signals and video signals between different communication interfaces. The system includes a first communication interface, a buffer module, a second communication interface, and an emulator module. The first communication interface is coupled to an electronic device, for transmitting a first differential signal and a first auxiliary signal. The buffer module is coupled to the first communication interface. The second communication interface is coupled to the buffer module, for transmitting a second differential signal. The emulator module is coupled to the second communication interface via a hub. The emulator module receives a second auxiliary signal. Data exchange for the first auxiliary signal and the second auxiliary signal is performed via the second communication interface between the buffer module and the emulator module.

Abstract: A system, apparatus and method for communicating half-duplex signals and full-duplex signals. The system includes an input unit, a separation unit and an output unit. The input unit includes a D± data channel for communicating differential data signals D± in both directions in half-duplex mode. The output unit includes a receiving channel D±RX and a transmitting channel D±TX for respectively communicating receiving differential signals D±RX and transmitting differential signals D±TX in full-duplex mode. The separation unit, coupled to the input unit and output unit, separately transmits differential data signals D± from the D± channel of the input unit as transmitting differential signals D±TX to the D±TX channel of the output unit, and transmits receiving differential signals D±RX from the D±RX channel of the output unit as D± data to the D± data channel of the input unit.

Abstract: A keyboard-video-mouse (KVM) switch and an operating method thereof are disclosed. The KVM switch is coupled between at least one peripheral device and controlled computers. The method includes steps of: determining whether the hot-key mode of KVM switch is started; if yes, when the KVM switch receives a first signal from a specific controlled computer of the controlled computers, directly passing the first signal to a corresponding specific peripheral device of the at least one peripheral device; when the KVM switch receives a second signal in response from the specific peripheral device within a predetermined period of time, determining whether the second signal includes a specific data; if yes, replacing the specific data in the second signal with an irrelevant data to form a third signal and transmitting the third signal to the specific controlled computer. The irrelevant data corresponds to the specific controlled computer and has no effect on the specific controlled computer.

Abstract: A multimedia signal transmission device includes: a clock signal detector for detecting a clock signal from a signal source and generating a clock index which specifies a frequency of the clock signal; a first microcontroller unit for receiving the clock index and for receiving multiple differential signals from the signal source and generating packets containing these signals; first and second photoelectric modules for transmitting and receiving the multiple minimized differential data signals and the packets as optical signals; a second microcontroller unit for generating the clock index and the multiple differential signals from the packets; and a clock data recovery circuit for receiving one of the multiple minimized differential data signals and receiving the clock index from the second microcontroller unit, and for recovering the clock signal having the specified frequency and synchronized to the multiple minimized differential data signals.

Abstract: A Thunderbolt sharing console includes a high speed switch electrically coupled to at least one Thunderbolt host, a MCU coupled to the high speed switch, and a Thunderbolt interface chip coupled to the high speed switch, wherein the MCU can be used to control the high speed switch for determining which one of the at least one Thunderbolt host is coupled to the Thunderbolt interface chip.

Abstract: A signal adapter device for a display system which enables turning on and off the display device for energy conservation. The signal adapter has a signal input port coupled to a signal source, a signal output port coupled to a display, and an adapter port coupled to a sensor. Corresponding pins of the input and output ports are electrically connected to each other, except that the hot plug detect pin of the input port is electrically disconnected from that of the output port but is electrically connected to a hot plug detect pin of the adapter port. The sensor senses environmental conditions such as the presence of viewers within a certain distance, and generates a voltage signal for the hot plug detect pin. Based on this signal on its hot plug detect pin, the signal source determines whether to transmit multimedia data to the display device.

Abstract: A game recording apparatus includes a video processing module, a video buffering module, an information converting module, a subtitle buffering module, and a video integrating module. The video processing module is coupled between a game console and video buffering module. The information converting module is coupled between a game controller and subtitle buffering module. The video processing module receives a video signal from game console and codes it, and coded video signal is stored in video buffering module. The information converting module receives an operation information from game controller and converts operation information into a subtitle information and saves it into subtitle buffering module. The video integrating module integrates coded video signal and subtitle information into a game video information with a specific video format. Therefore, requirements of time constraint and computing power can be reduced and operation load and cost of game recording apparatus can be lowered.

Abstract: A multi-channel KVM server system for supplying video data to a plurality of clients is disclosed. The KVM server includes a plurality of video processors and a video switch for connecting each video processor to one or more video sources. Each video processor processes video data using a multiresolution decomposition method to generate a plurality of decomposition components at different resolution levels. A main processor of the KVM server transmits the decomposition components generated by various video processors to various clients based on the clients' requirements. When some clients are in a multi-source (“TV wall”) mode and some clients are in a single-source mode, the main processor uses decomposition components generated by some video processors to supply both the clients in single-source mode and as a part of the TV wall data for the clients in multi-source mode.

Abstract: A switching selector for selecting a power source from two power sources. It includes a controller, a detection circuit, a transistor and two groups of four transfer switches or relays, wherein the controller is a micro-processor and the detection circuit includes two transformers. Primary winding of each of two transformers is connected to two different power sources, and secondary winding of each of two transformers is connected to input of the controller. Output of the controller is connected to a base of a transistor for controlling the transfer switches. Each group of four transfer switches form a redundant switch for selecting one of the two power sources, where the four transfer switches are connected such that the selection function is not affected when any one of the transfer switches malfunctions.

Abstract: The present invention provides a calibration system and method of multi-image output system. The output image of the multi-image output system can be automatically calibrated by using simple hardware apparatus and algorithm.