CN102685429A - High-definition multi-media interface unit and power supply control method thereof - Google Patents
High-definition multi-media interface unit and power supply control method thereof Download PDFInfo
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- CN102685429A CN102685429A CN201110054807XA CN201110054807A CN102685429A CN 102685429 A CN102685429 A CN 102685429A CN 201110054807X A CN201110054807X A CN 201110054807XA CN 201110054807 A CN201110054807 A CN 201110054807A CN 102685429 A CN102685429 A CN 102685429A
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Abstract
The invention relates to a high-definition multi-media interface (HDMI) unit and a power supply control method of the HDMI unit, which are applied to situation that an HDMI Ethernet network channel is implemented. The HDMI unit can be connected to another HDMI unit through an HDMI so as to obtain an external power supply, so that the external power supply can be used as an internal standby electric power of an Ethernet network circuit when an internal power supply of the HDMI unit is disconnected. The HDMI unit comprises an HDMI, the HDMI Ethernet network channel and the Ethernet network circuit and is used for feeding allowable signals to the HDMI and the Ethernet network channel, wherein the Ethernet network circuit obtains an external power supply from another HDMI unit through the HDMI.
Description
Technical field
The present invention relates to HDMI (HDMI), refer to a kind of HDMI device and power control method thereof of the HDMI of support Ethernet passage especially.
Background technology
At HDMI (High Definition Multimedia Interface; HDMI) in 1.4 the specification; Beginning has the function of supporting Ethernet; Therefore can (be HDMI Ethernet channel, HEC), carry out high-speed data transmission via the Ethernet passage in the HDMI interface between the HDMI device.Common application is; There is a HDMI receiving system (HDMI sink is like TV) to be connected to a Wide Area Network (WAN) or LAN (LAN) via the Ethernet interface, and the HDMI original device that it connected (HDMI source; Like attached net storage device (network attached storage; NAS)) also can connect upward this wide area/LAN,, for example download video-audio data to carry out transfer of data via HDMI Ethernet passage.By this mode, when using a plurality of HDMI device simultaneously, only need there be one of them to be wired to wide area/LAN, other HDMI device can be shared this network connectivity, and saves in addition the trouble of line voluntarily, also can significantly simplify network configuration.
Yet; In aforementioned applications; Turn off power supply if be used for linking the HDMI device of wide area/LAN, the network connectivity of then sharing will interrupt, and causes other HDMI device also can't connect wide area/LAN; This is very inconvenient for some needs long transfer of data (for example video-audio data download).
Summary of the invention
In view of this, one of the object of the invention is to provide a kind of HDMI device and power control method thereof, is applicable to the situation of implementing HDMI Ethernet passage.This HDMI device can be obtained external power source by the HDMI interface is connected to another HDMI device, with when internal electric source own cuts out, as the redundant electric power of inner Ethernet circuit.
In one embodiment of this invention, disclosed a kind of HDMI device, having comprised: a HDMI interface comprises a HDMI Ethernet passage; And an Ethernet circuit, in order to enable this HDMI Ethernet passage; Wherein, this Ethernet circuit is obtained an external power source via this HDMI interface from another HDMI device.
In another embodiment of the present invention, disclosed a kind of power control method that is used for a HDMI device.This HDMI device comprises a HDMI interface, an internal electric source and an Ethernet circuit, and this HDMI interface comprises a HDMI Ethernet passage.This power control method comprises the following steps: to obtain an external power source via this HDMI interface from another HDMI device; And provide one of this external power source and this internal electric source to this Ethernet circuit.
Description of drawings
Fig. 1 is the calcspar of an embodiment of HDMI device of the present invention.
Fig. 2 is the calcspar of a preferred embodiment of HDMI device of the present invention.
Fig. 3 is the calcspar of another preferred embodiment of HDMI device of the present invention.
Fig. 4 is the flow chart of an embodiment of power control method of the present invention.
The primary clustering symbol description
10,20,13: the one HDMI devices of 30: the one HDMI devices
11: Ethernet circuit 111: the Ethernet interface
112: start-up circuit 113: memory circuit
12:HDMI connects 14: power supply unit
15: multiplexer 16: network
S4 1～S42: the flow process of an embodiment of power control method
Embodiment
Fig. 1 is the calcspar of an embodiment (i.e. a HDMI device 10) of HDMI device of the present invention.In the present embodiment; The one HDMI device 10 can be various HDMI receiving systems; For example TV, display or the like, 13 in the 2nd HDMI device is various HDMI original devices, like DVD player, top box of digital machine, computer, attached net storage device (NAS) etc.; In other embodiments; The one HDMI device 10 and the 2nd HDMI device 13 can be the devices of other any use HDMI interface, like HDMI extender (extender), HDMI repeater (repeater), HDMI coupler (multiplexer, multiplexer) etc.The one HDMI device 10 comprises an Ethernet circuit 11 and a HDMI interface 12; Wherein HDMI interface 12 comprises that a HDMI Ethernet passage (HDMI Ethernet channel) supplies to connect Ethernet circuit 11; For example; HDMI interface 12 existing hot plug capable of using (Hotplug) pins are used as this HDMI Ethernet passage.Therefore, the 2nd HDMI device 13 can use the network service by HDMI interface 12, Ethernet circuit 11 and Ethernet interface 111 are wired to network 16.Link to each other through the HDMI cable between HDMI interface 12 and the 2nd HDMI device 13, therefore, a HDMI device 10 can be obtained external power source from the 2nd HDMI device 13 by this HDMI cable and be supplied to Ethernet circuit 11.For example, the 2nd HDMI device 13 is supplied this external power source to Ethernet circuit 11 via a power pins (like the pin of 5V) of HDMI interface 12.Therefore; When a HDMI device 10 AC power supplies own are closed; Still can obtain electric power from the outside, make Ethernet circuit 11 keep normal operation, for example by HDMI interface 12; The 2nd HDMI device 13 still can be wired to network 16 through Ethernet circuit 11 and carry out transfer of data via the HDMI Ethernet passage of HDMI interface 12.
Fig. 2 is the calcspar of another embodiment of HDMI device (i.e. a HDMI device 20) of proposition according to the present invention.In the present embodiment, a HDMI device 20 also comprises a power supply unit 14 and a multiplexer 15.Power supply unit 14 can provide an internal electric source.Multiplexer 15 is coupled to power supply unit 14, HDMI interface 12 and Ethernet circuit 11, one of exportable this external power source and this internal electric source to Ethernet circuit 11.By aforementioned manner, a HDMI device 20 can provide more flexible power scheduling, to guarantee the normal operation of Ethernet circuit 11.For example, when power supply unit 14 (being internal electric source) was opened, multiplexer 15 was promptly exported this internal electric source to Ethernet circuit 11; And when power supply unit 14 was closed, multiplexer 15 was promptly exported this external power source to Ethernet circuit 11, as redundant electric power.
In the embodiment of Fig. 1, Fig. 2; Ethernet circuit 11 has the function of interchanger (Ethernet switch); For example, except HDMI Ethernet passage, Ethernet circuit 11 also provides and meets the Ethernet passage of IEEE 802.3 specifications originally; Can be connected to other network 16 via an Ethernet interface 111 (like the RJ-45 interface), like Wide Area Network (like the internet) or LAN.Note that if the networked devices of supporting other specification (like radio zone net (WLAN)) is arranged in the HDMI device 10 and 20, and be coupled to Ethernet circuit 11, then Ethernet circuit 11 also can be connected to network 16 by this networked devices and network interface thereof.When Ethernet circuit 11 is connected to network 16; The 2nd HDMI device 13 also can be connected to network 16 via the HDMI Ethernet passage of HDMI interface 12; Therefore, a HDMI device 10 (or 20) can be shared the line that is connected to network 16 with the 2nd HDMI device 13.This has its advantage in practical application.For example, suppose that a HDMI device 10 (or 20) is a HDMI receiving system (like TV), the 2nd HDMI device 13 is HDMI original device (like a computer), and network 16 is the internet, and the 2nd HDMI device 13 is just through the Internet video-audio data.At this moment, if a HDMI device 10 (or 20) shutdown, the 2nd HDMI device 13 still can provide external power source to ether lattice network 11, to keep the line with the internet, downloads and continue to carry out, and does not need oneself to be wired to the internet more in addition.
Fig. 3 is the calcspar of a preferred embodiment (i.e. a HDMI device 30) of HDMI device 30 of the present invention, and wherein, Ethernet circuit 11 also comprises a start-up circuit 1 12 and a memory circuit 113.Start-up circuit 112 can be carried out an ability discovery and control, and (capability discovery control, CDC) program is to enable HDMI Ethernet passage.This CDC program is known by the personnel of technical field under the present invention, does not give unnecessary details here.Memory circuit 1 13 can provide a physical address (physical address) of start-up circuit 1 12; And the 2nd HDMI device 13 can come addressing start-up circuit 1 12 according to this physical address; Carry out this CDC program to enable start-up circuit 1 12; So, the 2nd HDMI device 13 just can communicate via a HDMI Ethernet passage and a HDMI device 30.Preferably; Memory circuit 113 is in order to store an expanded display recognition data (extended display identification data; EDID); It comprises the physical address of start-up circuit 112, and (display data channel DDC) obtains this physical address and the 2nd HDMI device 13 is via a DDC of HDMI interface 12.
Fig. 4 is the flow chart of an embodiment of power control method of the present invention, and it is applicable in a HDMI device 20 and 30.In step S41, a HDMI device 20 and 30 is connected to another HDMI device (like the 2nd HDMI device 13) via HDMI interface 12, to obtain an external power source, for example, can obtain this external power source via the power pins of HDMI interface 12.In step S42, provide this external power source and internal electric source (being power supply unit 14) both one of to Ethernet circuit 11.For example, when this internal electric source cut out, step S42 provided this external power source to Ethernet circuit 11, as redundant electric power.
Comprehensively above-mentioned, HDMI device of the present invention and power control method thereof are applicable to the situation of implementing HDMI Ethernet passage.This HDMI device can be obtained external power source by the HDMI interface is connected to another HDMI device, with when internal electric source own cuts out, as the redundant electric power of inner Ethernet circuit.So, when this internal electric source cut out, the Ethernet circuit still can be kept running, supplied this another HDMI device to use, and for example, this another HDMI device can be connected to other network via this Ethernet circuit, carries out the download of video-audio data.
The above utilizes preferred embodiment to specify the present invention, and unrestricted scope of the present invention.Generally those skilled in the art all can understand, and suitably do change and adjustment slightly, will not lose main idea of the present invention place, also do not break away from the spirit and scope of the present invention.
Claims (11)
1. a HDMI (HDMI) installs, and comprising:
One HDMI interface comprises a HDMI Ethernet passage; And
One Ethernet circuit is in order to enable said HDMI Ethernet passage;
Wherein, said Ethernet circuit is obtained an external power source via said HDMI interface from another HDMI device.
2. HDMI device according to claim 1, wherein, said Ethernet circuit is obtained said external power source via a power pins of said HDMI interface.
3. HDMI device according to claim 1 also comprises:
One power supply unit is in order to provide an internal electric source; And
One multiplexer is coupled to said power supply unit, said HDMI interface and said Ethernet circuit, in order to export one of said external power source and said internal electric source to said Ethernet circuit.
4. HDMI device according to claim 3, wherein, when said internal electric source cut out, said multiplexer was exported said external power source to said Ethernet circuit.
5. HDMI device according to claim 1, wherein, said Ethernet circuit comprises an Ethernet interface, in order to be connected to a network; Said another HDMI device is connected to said network via said HDMI Ethernet passage.
6. HDMI device according to claim 5, wherein, said HDMI device is the HDMI receiving system, said another HDMI device is the HDMI original device.
7. HDMI device according to claim 1, wherein, said Ethernet circuit comprises:
One start-up circuit is in order to carry out an ability discovery and control (CDC) program, so that the said HDMI Ethernet passage of ability; And
One memory circuit is in order to provide a physical address of said start-up circuit;
Wherein, said another HDMI device enables said start-up circuit to carry out said CDC program according to said physical address.
8. HDMI device according to claim 7; Wherein, Said memory circuit in order to store one comprise said physical address expanded display recognition data (EDID), said another HDMI device is obtained said physical address via a DDC (DDC) of said HDMI interface.
9. one kind is used for the power control method that a HDMI (HDMI) installs; Said HDMI device comprises a HDMI interface, an internal electric source and an Ethernet circuit; Said HDMI interface comprises a HDMI Ethernet passage, and said power control method comprises the following steps:
Via said HDMI interface, obtain an external power source from another HDMI device; And
One of said external power source and said internal electric source to said Ethernet circuit is provided.
10. power control method according to claim 9, wherein, the said step that obtains obtains said external power source via a power pins of said HDMI interface.
11. power control method according to claim 9, wherein, when said internal electric source cut out, the said step that provides provided said external power source to said Ethernet circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110054807XA CN102685429A (en) | 2011-03-08 | 2011-03-08 | High-definition multi-media interface unit and power supply control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110054807XA CN102685429A (en) | 2011-03-08 | 2011-03-08 | High-definition multi-media interface unit and power supply control method thereof |
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| CN102685429A true CN102685429A (en) | 2012-09-19 |
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| CN201110054807XA Pending CN102685429A (en) | 2011-03-08 | 2011-03-08 | High-definition multi-media interface unit and power supply control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106528031A (en) * | 2016-10-17 | 2017-03-22 | 广州视睿电子科技有限公司 | Extended display identification data reading method and device |
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| CN201440468U (en) * | 2009-05-20 | 2010-04-21 | 养生堂有限公司 | HDMI connector |
| CN201622521U (en) * | 2009-12-31 | 2010-11-03 | 苏州彭华信息技术有限公司 | Computer with built-in network storage device |
| CN201639650U (en) * | 2010-03-26 | 2010-11-17 | 深圳创维数字技术股份有限公司 | Set top box capable of being charged and supplying power externally |
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- 2011-03-08 CN CN201110054807XA patent/CN102685429A/en active Pending
Patent Citations (6)
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| CN2865161Y (en) * | 2005-12-19 | 2007-01-31 | 海信集团有限公司 | Special TV set circuit for hotel |
| CN2930119Y (en) * | 2006-07-19 | 2007-08-01 | 杨春泽 | Broad band ADSL MODEM of USB port power supply |
| CN201038755Y (en) * | 2007-03-18 | 2008-03-19 | 深圳市同洲电子股份有限公司 | HDMI/ USB interface electronic equipment and its interface circuit |
| CN201440468U (en) * | 2009-05-20 | 2010-04-21 | 养生堂有限公司 | HDMI connector |
| CN201622521U (en) * | 2009-12-31 | 2010-11-03 | 苏州彭华信息技术有限公司 | Computer with built-in network storage device |
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| CN106528031A (en) * | 2016-10-17 | 2017-03-22 | 广州视睿电子科技有限公司 | Extended display identification data reading method and device |
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Application publication date: 20120919 |