MHL (Mobile High-Definition Link) detection device and charge power supply management method of digital multimedia receiving device
A technology for charging power management and receiving equipment, applied to battery circuit devices, TVs, current collectors, etc.
Inactive Publication Date: 2012-10-31
SOUTHWEAT UNIV OF SCI & TECH
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[0003] According to the MHL standard, the MHL to HDMI connection cable uses 5 wires to realize the interconnection between the HDMI interface and the MHL interface. The 5 connection signal lines are: MHL_D+, MHL_D-, CBUS, +5V, GND, which do not involve the device hardware Connection detection and charging power management between two multimedia devices
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[0014] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.
[0015] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0016] The invention provides a hardware connection detection of an HDMI interface of a digital multimedia receiving device and an MHL interface of a smart phone, and a power management method when the digital multimedia receiving device charges the MHL device through a connection line.
[0017] The specific constitutional figure of the technical solution of the present invention is as follows: figure 2 , its system flow chart and contr...
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The invention discloses an MHL (Mobile High-Definition Link) detection device and a charge power supply management method of a digital multimedia receiving device. The technical scheme is as follows: the digital multimedia receiving device comprises an MHL device detection circuit, an MHL charge power supply management circuit, a processor, a signal processor and an MHL connection wire joint. The MHL detection device is characterized in that and an MHL cable and an HDMI (High Definition Multimedia Interface) of an MHL device accessing the receiving device can be conveniently detected by the MHL device detection circuit, and the MHL charge power supply management circuit is controlled through the processor for charging the MHL device. The invention has the advantages of expanding an MHL technology and realizing hardware connection detection of the MHL device in the HDMI and charge power supply management of the MHL device.
Description
technical field [0001] The invention relates to a digital multimedia technology, in particular to connection detection between digital multimedia receiving equipment and MHL (Mobile HD Link) equipment and charging power management of the MHL equipment. Background technique [0002] With the rapid development of current digital technology, most digital multimedia receiving devices have HDMI (High Definition Multimedia) interface. HDMI interface is a digital signal interface commonly used in audio and video sending and receiving equipment. It supports the display formats in the two standards of EIA / CEA-861B and VESA (Video Electronics Standards Association), so it is widely used. In addition, with the development of smart mobile (Smart Mobile) technology, the processing of digital streaming media has become simpler and more convenient. In order to adapt to the interconnection between smart phones and digital multimedia receiving devices, a new type of connection has emerged T...
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IPC IPC(8): H04N5/765H02J7/00
Inventor 王玉
Owner SOUTHWEAT UNIV OF SCI & TECH