CN104796744A - Video play system - Google Patents
Video play system Download PDFInfo
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- CN104796744A CN104796744A CN201410025951.4A CN201410025951A CN104796744A CN 104796744 A CN104796744 A CN 104796744A CN 201410025951 A CN201410025951 A CN 201410025951A CN 104796744 A CN104796744 A CN 104796744A
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- media apparatus
- power supply
- usb power
- audio
- processing unit
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Abstract
The invention provides a video play system which comprises a first media device and a second media device, wherein the first media device is connected with the second media device via a USB Power Delivery interface, and at the same time transmits data and protected video contents to the second media device via the USB Power Delivery interface; and the second media device plays the protected video contents on a first electronic device via the USB Power Delivery interface. The video play system can transmit audio and data at the same time via the USB interface, and better use experience is provided for users.
Description
Technical field
The present invention relates to video system, particularly relate to the audio/video player system that USB interface can be utilized simultaneously to transmit video and data.
Background technology
In current audio/video player system, to play shielded video content, specific multimedia interface (being such as HDMI, DisplayPort) is often needed to carry out transmitting audio-video data.But, current electronic installation (such as PC) is often equipped with USB interface allow electronic installation and external USB device carry out transfer of data with person easy to use, if electronic installation, for being equipped with multimedia interface or the larger specific coffret (such as Lightning bolt or Thunderbolt interface) of frequency range, often needs to spend extra cost.Therefore, need a kind of audio/video player system can carry out audio-visual and transfer of data by USB interface simultaneously, obtain better use sense so as to allowing user and be subject to.
Summary of the invention
In order to overcome the defect of prior art, the invention provides a kind of audio/video player system, comprising: one first media apparatus; And one second media apparatus; wherein this first media apparatus transmits (USB Power Delivery) interface by a USB power supply and is connected with this second media apparatus; and transmit data and a protected video content to this second media apparatus by this USB power supply passing interface simultaneously, wherein this second media apparatus via this USB power supply passing interface to play this protected video content on one first electronic installation.
Method of the present invention, system and device also can with procedure code kenel by some transfer mediums, as electric wire or cable, optical fiber or any transmission kenel transmit, wherein, when procedure code is by machine, as computer receive, be loaded into and perform time, this machine becomes to participate in device of the present invention or system.When general service processor implementation, procedure code associative processor provides a class of operation to be similar to the unique apparatus of application particular logic circuit.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of display according to the audio/video player system of one embodiment of the invention.
Fig. 2 is the more detailed block diagram of display according to the audio/video player system 10 of one embodiment of the invention.
Fig. 3 A is that display sets the schematic diagram of shelves according to the USB PD in one embodiment of the invention.
Fig. 3 B is the schematic diagram of the definition of pin position of the USB PD standard that display uses according to integrated interface in one embodiment of the invention.
Wherein, description of reference numerals is as follows:
10: audio/video player system;
100,200 ~ media apparatus;
112,212 ~ processing unit;
114,214 ~ device management unit;
116,216 ~ source administrative unit;
118,218 ~ power-supply unit;
120,220 ~ USB interface;
122,222 ~ multimedia interface;
124,224 ~ integrated interface;
130,230 ~ multiplexer;
210,230 ~ electronic installation.
Embodiment
For making above-mentioned purpose of the present invention, feature and advantage become apparent, a preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Fig. 1 is the schematic block diagram of display according to the audio/video player system 10 of one embodiment of the invention.As shown in Figure 1, audio/video player system 10 comprises media apparatus 100 and media apparatus 200, and wherein media apparatus 100 and media apparatus 200 are interconnected by USB interface.In one embodiment, one of them of media apparatus 100 or media apparatus 200 can be used as a media provider (media provider) or an original device (source device), and another can be used as media recipient (media consumer) or receiving system (sink device).For convenience of explanation, using media apparatus 100 as original device in aftermentioned embodiment, media apparatus 200 is that example is described as receiving system.In simple terms, media provider provides a media data flow and HDCP signal to media recipient by USB interface, and media recipient can by media data flow decoding and in the image/video of a display unit broadcast decoder gained.
Fig. 2 is the more detailed block diagram of display according to the audio/video player system 10 of one embodiment of the invention.As shown in Figure 2, media apparatus 100 comprises processing unit 112, device management unit 114, source administrative unit 116, power supply device 118, usb 1 20 and a multimedia interface 122.Each element 212 ~ 222 in media apparatus 200 corresponds to the element in media apparatus 100, each element in media apparatus 100 is only described in aftermentioned embodiment, those of ordinary skill in the art are when the implementation detail can understanding each element in media apparatus 200, therefore its details repeats no more in this.In one embodiment, multimedia interface 122 meets the standard of HDMI and/or DisplayPort, and usb 1 20 meets the standard that USB power supply transmits (Universal Serial Bus Power Delivery).In certain embodiments, multimedia interface 122 and usb 1 20 can merge into an integrated interface 124 (being such as the interface supporting USB PD specification).Power supply device 118 in order to provide the power supply needed for each element in media apparatus 110, and provides the operating voltage of the VBUS pin position in usb 1 20.Whether whether source administrative unit 116 have electronic installation insert the detection signal (being such as a hot plug signal) of multimedia interface 122 or have electronic installation to insert the detection signal (being such as a USBPD detection signal) of usb 1 20 in order to receive, and detection signal is provided to device management unit 114.Whether device management unit 114 provides power supply to corresponding element in order to control power supply device 118.
In addition, to support DisplayPort standard, device management unit 114 also can judge whether the media apparatus being connected to usb 1 20 is the video-unit supporting USB Power Delivery (USB PD) and HDCP transmission standard, such as judge whether media apparatus 150 is connected with the video-unit of support USB PD, and device management unit 114 also can judge whether that electronic installation has inserted in multimedia interface 122 and connect.Further, device management unit 114 is also connected to extension display capabilities identification data (the Extended Display Identification Data of the electronic installation (such as electronic installation 210) of usb 1 20 by an Auxiliary passage transmission, EDID) to processing unit 112, and transmit a hot plug detection signal to processing unit 112, whether there is the electronic installation of any support hot plug (such as meeting the standard of HDMI, DisplayPort) to insert in multimedia interface 122 so as to notifier processes unit 112.In one embodiment, device management unit 114 can be realized by a microcontroller (microcontroller).
Fig. 3 A is that display sets the schematic diagram of shelves according to the USB PD in one embodiment of the invention.As shown in Figure 3A, define setting shelves 0 ~ 5 in the specification of USB PD1.0, each setting shelves define the voltage and electric current that use at USB PD interface in varied situations, and voltage and the electric current of some of setting shelves are greater far beyond USB3.0/2.0.In addition, invention also defines setting shelves 6, user can self-defining its required voltage of using and size of current, to transmit data and protected video content (protected video content) in integrated interface simultaneously.In addition, when device management unit 114 also can need to switch to high-speed transfer, receive extension display capabilities identification data and transmit HDCP data to learn according to setting shelves 6.
Fig. 3 B is the schematic diagram of the definition of pin position of the USB PD standard that display uses according to integrated interface in one embodiment of the invention.As shown in Figure 3 B, define 14 pin positions in the specification of USB PD1.0, be pin bit number 1 ~ 13 and shell (shell) respectively, wherein each pin bit number all has the signal name of a correspondence.It is noted that in the specification of USB2.0, only define pin position 1-4, namely meaning is respectively VBUS, D-, D+ and GND pin position, and namely these 4 pin positions can be used for transmitting data with non-high-speed.Further, the pin position 10 and 11 in USB PD specification is detection pin position PD DETECT1 and the PD DETECT2 of USB PD device, and namely media apparatus 100 and 200 detects by these two pin positions the specification whether USB device connected supports USB PD.In addition, whether the pin position 12 and 13 in USB PD specification has USB device to insert in order to detect.Source administrative unit 116 in the present invention can produce corresponding detection signal to device management unit 114 according to above-mentioned pin position respectively.Then device management unit 114 can transmit the extension display capabilities identification data of the electronic installation connected, HDCP signal and hot plug detection signal to processing unit 112 respectively by the Auxiliary passage defined in DisplayPort specification.Similarly, processing unit 112 is also by Auxiliary passage and via device management unit 114 so that HDCP signal is sent to media apparatus 200 by usb 1 20.
It is noted that traditionally, pin position 10 and 11 is detected with regard to no longer continuing having detected after whether connected USB device supports USB PD specification.Detecting after whether connected USB device support USB PD specification, media apparatus 100 of the present invention can utilize pin position 5 ~ 9 to carry out the shielded video content of High Speed Transfer.Further, Lane0 and Lane1 that processing unit 112 can use pin position 5 ~ 9 to define as DisplayPort specification plays to electronic installation 210 with High Speed Transfer video data (such as with the speed transmission of 720P@30FPS).For processing unit 112, it only can receive the extension display capabilities identification data of standard and the detection signal of USB PD device, does not need extra judgment mechanism.Further; when processing unit 112 is for transmitting data and shielded video data by integrated interface 124 simultaneously; the pin position that the part of data defines by script USB2.0 is transmitted; the video data needing HDCP signal to coordinate then by the pin position 5 ~ 9 in USB PD specification to meet the mode transmission of Lane0, Lane1 of DisplayPort specification, wherein Lane0 and Lane1 refers to that signal is differential to (signal differential pair).
In one embodiment, media apparatus 200 is such as a USB video external connection box, and it comprises USB3.0 or 2.0 interfaces, HDMI and/or DisplayPort interface.Media apparatus 200 detects the multimedia interface whether having electronic video equipment (such as electronic installation 230) to insert HDMI or DisplayPort etc., such as, use the PD device in USB PD interface to detect pin position (such as PD DETECT1/PDDETECT2) and insert and detect pin position (such as INSERTION DETECT).Processing unit 212 in media apparatus 200 obtains the extension display capabilities identification data of electronic installation 230 by accessory channel.Because media apparatus 200 is connected with media apparatus 100 by USB PD interface, the extension display capabilities identification data of electronic installation 230 is also sent to processing unit 112 (such as by VBUS pin position) by USB PD interface by the processing unit 212 in media apparatus 200.Now; when 112 judgements of the processing unit in media apparatus 100 can the shielded video content of High Speed Transfer to media apparatus 200 time; then processing unit 112 uses the high-speed transfer pin position in USB PD interface and receives at a high speed pin position (the pin position 5 ~ 9 in such as Fig. 3 B) with the shielded video content of High Speed Transfer to media apparatus 200, and transmits the HDCP signal needed for decoding by VBUS pin position.Then, the HDCP signal received and shielded video content can be sent to electronic installation 230 and decode and play by the processing unit 212 of media apparatus 200.
Method of the present invention, or specific kenel or its part, tangible media can be contained in the kenel of procedure code, as floppy disk, disc, hard disk or any other machine-readable (as readable in computer) medium, wherein, when procedure code is by machine, as computer be loaded into and perform time, this machine becomes to participate in device of the present invention or system.Method of the present invention, system and device also can with procedure code kenel by some transfer mediums, as electric wire or cable, optical fiber or any transmission kenel transmit, wherein, when procedure code is by machine, as computer receive, be loaded into and perform time, this machine becomes to participate in device of the present invention or system.When general service processor implementation, procedure code associative processor provides a class of operation to be similar to the unique apparatus of application particular logic circuit.
Though the present invention discloses as above with preferred embodiment; so itself and be not used to limit scope of the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when doing a little change and retouching, the scope that therefore protection scope of the present invention ought define depending on appended claim is as the criterion.
Claims (9)
1. an audio/video player system, comprising:
One first media apparatus; And
One second media apparatus; wherein this first media apparatus is connected with this second media apparatus by a USB power supply passing interface; and transmit data and a protected video content to this second media apparatus by this USB power supply passing interface simultaneously
Wherein this second media apparatus via this USB power supply passing interface to play this protected video content on one first electronic installation.
2. audio/video player system as claimed in claim 1, wherein DisplayPort specification supported by this first electronic installation.
3. audio/video player system as claimed in claim 1, wherein this first media apparatus comprises:
One first processing unit;
One device management unit; And
One source administrative unit;
Wherein this device management unit obtains an extension display capabilities identification data of this first electronic installation via this USB power supply passing interface, and by an accessory channel, this extension display capabilities identification data is sent to this first processing unit.
4. audio/video player system as claimed in claim 3; wherein this first processing unit transmits a high frequency range digital content protection signal to this device management unit by this accessory channel, and this high frequency range digital content protection signal is sent to this second media apparatus by this USB power supply passing interface by this device management unit.
5. audio/video player system as claimed in claim 3, wherein this first media apparatus also comprises a multiplexer, and this first processing unit also can control this multiplexer selection transmission data or transmit this protected video content to this second electronic device.
6. audio/video player system as claimed in claim 4; wherein use the first power supply transmission in this USB power supply passing interface to detect pin position and second source transmission in this source administrative unit to detect pin position and detect after whether this second electronic device support that USB power supply transmits specification, the first processing unit uses the High Speed Transfer pin position in this USB power supply passing interface and receives at a high speed pin position to transmit this protected video content to this second electronic device.
7. audio/video player system as claimed in claim 3, wherein this device management unit is applied mechanically setting shelves and is carried out transmission data to notify this first processing unit or transmit this protected video content.
8. audio/video player system as claimed in claim 4, wherein this first processing unit transmits this high frequency range digital content protection signal to this second media apparatus by the VBUS pin position in this USB power supply passing interface.
9. audio/video player system as claimed in claim 3, whether wherein this source administrative unit also detects has a second electronic device to insert this USB power supply passing interface in this first media apparatus,
Wherein when detecting that this second electronic device inserts this USB power supply passing interface in this first media apparatus, this source administrative unit also transmits a hot plug detection signal to this first processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025951.4A CN104796744B (en) | 2014-01-20 | 2014-01-20 | Audio/video player system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025951.4A CN104796744B (en) | 2014-01-20 | 2014-01-20 | Audio/video player system |
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| Publication Number | Publication Date |
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| CN104796744A true CN104796744A (en) | 2015-07-22 |
| CN104796744B CN104796744B (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410025951.4A Active CN104796744B (en) | 2014-01-20 | 2014-01-20 | Audio/video player system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109155871A (en) * | 2016-04-26 | 2019-01-04 | 麦克赛尔株式会社 | Image output system, image output device and connection cables |
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| CN109155871B (en) * | 2016-04-26 | 2020-11-13 | 麦克赛尔株式会社 | Image output system, image output device and connection cable |
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| CN104796744B (en) | 2019-05-03 |
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