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Method, device and system for transmitting signals from USB main equipment to CPU

A master device and signal technology, which is applied in the field of signal transmission and can solve the problem that the signal cannot be transmitted to the CPU.

Inactive Publication Date: 2014-04-23
QINGDAO GOERTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a method, device and system for transmitting a signal from a USB master device to a CPU to solve the problem that the signal cannot be transmitted to the CPU through the USB master device of the host

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  • Method, device and system for transmitting signals from USB main equipment to CPU
  • Method, device and system for transmitting signals from USB main equipment to CPU
  • Method, device and system for transmitting signals from USB main equipment to CPU

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] The core idea of ​​the present invention is, because the CPU that processes audio signal and video signal includes USB master device and RMII interface, the host computer of source of audio signal has USB master device function, can't direct communication between USB two master devices. Therefore, the present invention utilizes a device integrating USB from equipment and RMII interface, converts the signal of USB protocol format into the signal of RMII interface format, and sends the signal of this RMII interface format to the integrated RMII interface by the RMII interface in the device CPU. The signal transmission of the USB master device in the host computer to the CPU is realized through conversion. Among them, MII (Media I...

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Abstract

The invention discloses a method, a device and a system for transmitting signals from USB main equipment to a CPU. The method comprises the steps that the signals which are of the USB protocol format and transmitted from the USB main equipment are received by means of USB secondary equipment; the signals which are of the USB protocol format and received by the USB secondary equipment are converted into simplified signals of the RMII format; the signals of the RMII format are transmitted to the CPU integrating an RMII by means of the RMII. According to the method, the device and the system, by means of the device integrating the USB secondary equipment, the RMII and a signal converting module, the signals of the USB protocol format are inverted into the signals of the RMII format, and the purpose of transmitting the signals from the USB main equipment to the CPU is achieved.

Description

technical field [0001] The invention relates to the field of signal transmission, in particular to a method, device and system for transmitting a signal from a USB master device to a CPU. Background technique [0002] When developing a display product, the CPU is often used to process video and audio signals. In order to adapt to the Universal Serial Bus (USB) interface commonly used by hosts in the industry, the common practice is that the host transmits video signals through a High Definition Multimedia Interface (HDMI) and transmits audio signals through a USB interface. Because the USB transmission method is that signals can only be sent from the USB master device to the USB slave device, the USB slave device cannot directly send signals to the USB master device. The CPU is used as the USB master device, and the host is also the USB master device, so the two USB master devices cannot communicate directly, and the signal cannot be transmitted to the CPU through the USB m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
Inventor 李树鹏王飞张超
Owner QINGDAO GOERTEK
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