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US 8,896,611 B2Granted
Bi-directional data transmission system and method
AssigneeRealtek Semiconductor Corp.
InventorsSen-Huang Tang, Po-Chiang Wu
Life of this patent
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Abstract
A bidirectional data transmission system and the transmitting method thereof are disclosed. A video graphics array interface or an interface including a display data channel is utilized in the bidirectional data transmission to transmit data in bi-direction.
Claims31
A bidirectional data transmission system, comprising:
- an input device, comprising a user-input interface, for generating an input signal;
- a display for receiving the input signal and generating an output data signal according to the input signal;
- a transmission interface, coupled to the display, for transmitting the output data signal;
- and
- a host system comprising:
- a graphic device, coupled to the transmission interface, for receiving the output data signal and interpreting the output data with a digital visual interface driver or a high definition multimedia interface driver;
- and
- a processor, coupled to the graphic device, for processing the output data signal;
- wherein the display is set in a TV mode or in a PC mode to output the output data signal to a display controlling circuit of the display by which the output data signal is processed to perform channel switching, volume tuning, TV/PC mode switching, recording, or video recording in the TV mode, and to transmit the output data signal to the host system via the transmission interface and receive a control signal outputted from the host system by the display controlling circuit via the transmission interface in the PC mode to perform parameter setting of the display, and wherein the control signal outputted from the host system in the PC mode to perform parameter setting of the display is generated based on the output data signal received by the host system in the PC mode.
6 more elements
A display controller installed in a display for receiving an input signal, which is generated by an user-input device, and using a digital visual interface or a high definition multimedia interface to perform bidirectional data transmission with a graphic card of a host system, the display controller comprising:
- an input data control unit for receiving and analyzing the input signal to generate an output data signal;
- and
- a display controlling circuit for receiving an image data to display image;
- wherein the graphic card receives the output data signal via the digital visual interface or the high definition multimedia interface and transmits it to the host system, the host system processes the output data signal, and the graphic card transmits the image data from the host system to the display controlling circuit via the digital visual interface or the high definition multimedia interface;
- wherein the display is set in a TV mode or in a PC mode to output the output data signal to a display controlling circuit of the display by which the output data signal is processed to perform channel switching, volume tuning, TV/PC mode switching, recording, or video recording in the TV mode, and to transmit the output data signal to the host system via the transmission interface and receive a control signal outputted from the host system by the display controlling circuit via the transmission interface in the PC mode to perform parameter setting of the display, and wherein the control signal outputted from the host system in the PC mode to perform parameter setting of the display is generated based on the output data signal received by the host system in the PC mode.
2 more elements
A bidirectional data transmitting method comprising:
- receiving and analyzing an input signal to generate an output data signal;
- determining whether a display is set in a TV mode or in a PC mode;
- if the display is set in the TV mode, outputting the output data signal to a display controlling circuit of the display, by which the output data signal is processed, to perform channel switching, volume tuning, TV/PC mode switching, recording, or video recording;
- and
- if the display is set in the PC mode, transmitting the output data signal to a host system via a transmission interface, and transmitting a control signal outputted from the host system to the display controlling circuit via the transmission interface to perform parameter setting of the display, and wherein the control signal outputted from the host system in the PC mode to perform parameter setting of the display is generated based on the output data signal received by the host system in the PC mode.
2 more elements
A display, comprising:
- an input interface for receiving an input signal generated by a user manipulating device;
- a processing unit for generating an output signal according to the input signal;
- and
- a transmission interface for transmitting the output signal to a host system, and transmitting data from the host system to the display,
- wherein the transmission interface is a video graphics array interface, a digital visual interface, or a high definition multimedia interface;
- wherein the display is set in a TV mode or in a PC mode to output the output data signal to a display controlling circuit of the display by which the output data signal is processed to perform channel switching, volume tuning, TV/PC mode switching, recording, or video recording in the TV mode, and to transmit the output data signal to the host system via the transmission interface and receive a control signal outputted from the host system by the display controlling circuit via the transmission interface in the PC mode to perform parameter setting of the display, and wherein the control signal outputted from the host system in the PC mode to perform parameter setting of the display is generated based on the output data signal received by the host system in the PC mode.
3 more elements
Dependencies are inferred from the claim text.