CN103744822A - Method, controller and system for transmitting signals from USB main equipment to CPU - Google Patents
Method, controller and system for transmitting signals from USB main equipment to CPU Download PDFInfo
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- CN103744822A CN103744822A CN201310686395.0A CN201310686395A CN103744822A CN 103744822 A CN103744822 A CN 103744822A CN 201310686395 A CN201310686395 A CN 201310686395A CN 103744822 A CN103744822 A CN 103744822A
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Abstract
The invention discloses a method, a controller and a system for transmitting signals from USB main equipment to 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 signals of the MMC protocol format; the signals of the MMC protocol format are transmitted to the CPU integrating MMC main equipment by means of an MMC. According to the method, the controller and the system, the signals of the USB protocol format are converted into the signals of the MMC protocol format by means of the controller integrating the USB secondary equipment, MMC secondary equipment and a signal converting module, and the function of transmitting the audio signals from the USB main equipment to the CPU is achieved.
Description
Technical field
The present invention relates to field of signal transmissions, particularly method, controller and the system from the signal of USB main equipment to CPU transmission.
Background technology
During product in exploitation aspect a demonstration, through conventional CPU, process video and audio signal.In order to adapt to the USB (universal serial bus) that industry main frame is conventional (Universal Serial Bus, be called for short USB) interface, practices well is that main frame passes through high-definition media interface (High Definition Multimedia Interface, be called for short, HDMI) transmit vision signal, by USB interface transmit audio signals.Because the transmission mode of USB is that signal can only send to USB from equipment from USB main equipment, USB cannot be to the direct transmitted signal of USB main equipment from equipment.CPU as USB main equipment, is also USB main equipment in main frame, cannot direct communication between such two USB main equipments, and signal cannot be sent to CPU by the USB main equipment of main frame.
Summary of the invention
The invention provides to CPU transmission and with solution signal, cannot be sent to by the USB main equipment of main frame the problem of CPU from method, controller and the system of the signal of USB main equipment.
The method from the signal of USB main equipment to CPU transmission is provided according to an aspect of the present invention, and the method comprises:
Utilize USB to receive the signal from the usb protocol form of USB master transmissions from equipment.
The signal of the signal converting multimedia storage card MMC protocol format of the usb protocol form that USB is received from equipment.
Utilize MMC from equipment by the signal of MMC protocol format, passed to the CPU of MMC main equipment integrated.
In one embodiment of the invention, signal is sound signal.
In one embodiment of the invention, the method further comprises: utilize MMC to receive CPU from equipment and gather by audio collecting device, and the sound signal of transmitting by MMC protocol format;
The sound signal of the MMC protocol format that MMC is received from equipment converts the signal of usb protocol form to;
Utilize USB receive the signal of described usb protocol form and this signal is passed to USB main equipment from equipment.
In one embodiment of the invention, the method further comprises receiving video signals, and the vision signal receiving is passed to CPU by high-definition media interface HDMI.
Provide according to another aspect of the present invention a kind of and transmitted the signal controller from USB main equipment to CPU, this controller comprises: USB is from functions of the equipments module, signal conversion module and MMC from functions of the equipments module;
USB is from functions of the equipments module, for receiving the signal from the usb protocol form of USB master transmissions;
Signal conversion module, for converting the signal of usb protocol form to the signal of MMC protocol format;
MMC is from functions of the equipments module, for by the signal of MMC protocol format, passed to the CPU of MMC main equipment integrated.
In one embodiment of the invention, signal is sound signal.
In one embodiment of the invention, this controller also gathers and adopts the sound signal of MMC protocol format transmission by audio collecting device for receiving CPU;
MMC from functions of the equipments module also for receiving the signal of the MMC protocol format that CPU passes back;
Signal conversion module also converts the signal of usb protocol form to for the signal of MMC protocol format that MMC is received from equipment;
USB from functions of the equipments module also for receiving the signal of the usb protocol form that signal conversion module converts to and this signal being passed to USB main equipment.
The present invention also provide a kind of to CPU transmission the signal system from USB main equipment, this system comprises: USB main equipment, the CPU of integrated MMC main equipment and the controller described in one aspect of the invention;
USB main equipment, for passing to controller by signal according to usb protocol;
The integrated CPU of MMC main equipment, for receiving the signal of the MMC protocol format of controller transmission by MMC main equipment.
In one embodiment of the invention, signal is sound signal.
In one embodiment of the invention, this system further comprises: the audio playing apparatus that connects CPU;
Or,
This system further comprises: the audio collecting device and the audio playing apparatus that connect CPU;
Or,
This system further comprises: connect audio playing apparatus and the display equipment of CPU, USB main equipment is transferred to CPU by HDMI interface by high-definition video signal, and CPU is transferred to display equipment by described high-definition video signal and plays;
Or,
This system further comprises: the audio playing apparatus that connects CPU be connected USB main equipment and the vision signal of USB main equipment passed to the video source device of CPU by HDMI interface.
Of the present invention this to CPU transmission method, controller and the system from the signal of USB main equipment, controller with an integration USB from functions of the equipments, MMC from functions of the equipments and signal conversion module, the signal of usb protocol form is converted to the signal of MMC protocol format, and the MMC in controller sent to the CPU of MMC main equipment from equipment integrated by the signal of this MMC protocol format, the signal that has solved the USB main equipment of main frame cannot directly be passed to the problem of CPU.Meanwhile, technical scheme of the present invention is carried out signal conversion by controller and has been realized the function of CPU to main frame passback sound signal.
Accompanying drawing explanation
Fig. 1 is the process flow diagram from the method for the signal of USB main equipment to CPU transmission that the embodiment of the present invention provides;
Fig. 2 is the block diagram from the controller of the signal of USB main equipment to CPU transmission that one embodiment of the invention provides;
Fig. 3 is the block diagram from the system of the signal of USB main equipment to CPU transmission that one embodiment of the invention provides;
Fig. 4 is the block diagram from the system of the signal of USB main equipment to CPU transmission that another embodiment of the present invention provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Core concept of the present invention is, because the CPU of audio signal and vision signal comprises USB main equipment and MMC main equipment, the main frame in sound signal source has USB master device functionality, cannot direct communication between two main equipments of USB.The transmission mode of considering MMC is transmitted in both directions, and MMC is from can two-way direct signal transmission between equipment and MMC main equipment.Therefore, the present invention utilizes one to can be used as the controller of USB from equipment and MMC from equipment, the signal of usb protocol form is converted to the signal of MMC protocol format, and MMC has sent to the CPU of MMC main equipment from equipment integrated by the signal of this MMC protocol format in controller.The signal of realizing USB main equipment in main frame by conversion is transferred in CPU.
Fig. 1 is the process flow diagram from the method for the signal of USB main equipment to CPU transmission that the embodiment of the present invention provides.Referring to Fig. 1, the method comprises:
In one embodiment of the invention, in step 110, utilizing USB is sound signal from the signal of the USB master transmissions of equipment reception.
In one embodiment of the invention, the method further comprises: vision signal is passed to CPU by high-definition media interface HDMI.It is the transmission that this method of the present invention can also be applied to realize vision signal.
In one embodiment of the invention, the method further comprises: utilize MMC to receive described CPU from equipment and gather by audio collecting device, and the sound signal of transmitting by MMC protocol format;
The sound signal of the MMC protocol format that described MMC is received from equipment converts the signal of usb protocol form to;
Utilize described USB receive the signal of described usb protocol form and this signal is passed to described USB main equipment from equipment.
Fig. 2 is the block diagram from the controller of the signal of USB main equipment to CPU transmission that one embodiment of the invention provides.Referring to Fig. 2, the present invention also provides the controller from the signal of USB main equipment to CPU transmission, and this controller comprises: USB is from functions of the equipments module 201, signal conversion module 202 and MMC from functions of the equipments module 203;
USB is from functions of the equipments module 201, for receiving the signal from the usb protocol form of USB master transmissions.
MMC is from functions of the equipments module 203, for by the signal of MMC protocol format, passed to the CPU of MMC main equipment integrated.
In one embodiment of the invention, this controller 200 also gathers and adopts the sound signal of MMC protocol format transmission by audio collecting device for receiving CPU;
MMC from functions of the equipments module 203 also for receiving the signal of the MMC protocol format that CPU passes back;
USB from functions of the equipments module 201 also for receiving the signal of the usb protocol form that signal conversion module converts to and this signal being passed to USB main equipment.
By this, possess the controller of USB from functions of the equipments module and MMC from functions of the equipments module and signal conversion module, realized the transmitted in both directions of signal between the main frame of integration USB main equipment and the CPU of integrated MMC main equipment.
Fig. 3 is the block diagram from the system of the signal of USB main equipment to CPU transmission that one embodiment of the invention provides.Of the present invention this to CPU transmission, the system from the signal of USB main equipment comprises: USB main equipment, integrated CPU and the controller as described in another aspect of the present invention of MMC main equipment.
USB main equipment, for signal is passed to controller USB according to usb protocol from functions of the equipments module.
The signal conversion module of controller, for converting the signal of usb protocol form to the signal of MMC protocol format.
The MMC of controller is from functions of the equipments module, for by the signal of MMC protocol format, passed to the CPU of MMC main equipment integrated.
The integrated CPU of MMC main equipment, for receiving the signal of the MMC protocol format of controller transmission by MMC main equipment.
Referring to Fig. 3, this system comprises: the USB main equipment 310 of main frame; The controller 200 of integration USB from functions of the equipments module and MMC from functions of the equipments module, and this controller 200 can convert the signal of usb protocol form to the signal of MMC protocol format; The CPU of processing audio and vision signal, integrated MMC main equipment 320.
Referring to Fig. 3, the embodiment that sort signal transmission system of the present invention is concrete is: in the present embodiment, main frame is sound signal by the signal of USB main equipment 310 transmission.Parameter value by register in change control device 200 is set as integration USB from equipment and MMC from functions of the equipments by controller 200.Sound signal is transferred to controller from the USB main equipment 310 of main frame by usb bus like this, controller converts the sound signal of usb protocol form to the sound signal of MMC protocol format, and then from equipment, the sound signal of MMC protocol format has been sent to the CPU of MMC main equipment 320 integrated by the MMC in controller 200.
Fig. 4 is the block diagram from the system of the signal of USB main equipment to CPU transmission that another embodiment of the present invention provides.
Referring to Fig. 4, in one embodiment of the present of invention, this system comprises USB main equipment 310, controller 200 and the integrated CPU of MMC main equipment;
USB main equipment 310, for signal is passed to controller 200 according to usb protocol, or for receiving the sound signal of controller 200 transmission.
The integrated CPU of MMC main equipment, for receiving the signal of the MMC protocol format of controller transmission by MMC main equipment; Or for by connect the audio collecting device 420 of CPU gather sound signals and adopt MMC protocol format by the audio signal transmission collecting to controller 200.
Referring to Fig. 4, in the present embodiment, this system also comprises: the audio playing apparatus 410 that connects CPU; CPU plays output by the sound signal receiving by audio playing apparatus 410.
As shown in Figure 4, in the present embodiment, controller 200 and CPU can become one, and form the device that is independent of main frame, are equivalent to the annex of main frame.Technical scheme of the present invention is in fact improved on traditional CPU and main frame, be that CPU itself also has USB master identification, main frame also has USB master identification, when main frame and CPU are when directly the USB mouth by is separately connected, cannot carry out master-slave equipment differentiation, thereby cannot communicate.The present invention expands in CPU mono-side, be connected to controller 200, utilize the MMC main equipment 320 of CPU and the USB in controller 200 from functions of the equipments module and MMC from functions of the equipments module, got around the USB mouth of CPU, set up the signal transmission passage of MMC mouth of MMC end → CPU of the USB end → controller 200 of main frame USB mouth → controller 200, thereby realized two proper communications between the device with USB master identification, the sound signal of main frame has finally been play on the audio playing apparatus such as the loudspeaker of CPU side, audio amplifier.If when CPU end is connected with the audio collecting devices such as microphone, can also set up reverse signal transmission channel, set up the signal transmission passage of USB end → main frame USB mouth of MMC end → controller 200 of MMC mouth → controller 200 of CPU.Described CPU gathers sound signal by audio collecting device and adopts MMC protocol format to transmit; Described MMC from functions of the equipments module also for receiving the signal of the MMC protocol format that described CPU passes back; Described signal conversion module also converts the signal of usb protocol form to for the signal of MMC protocol format that described MMC is received from equipment; Described USB from functions of the equipments module also for receiving the signal of the described usb protocol form that described signal conversion module converts to and this signal being passed to described USB main equipment.
In the present embodiment, this system also comprises and connects described USB main equipment and the vision signal of USB main equipment passed to the video source device of CPU by HDMI interface, and video source device can be high-definition camera.And the signal that main frame and CPU transmit by controller is except sound signal, it can also be common vision signal (being general clear vision signal with respect to high-definition video signal).
In other embodiments of the invention, this system also comprises audio playing apparatus and the display equipment that connects CPU, and USB main equipment is transferred to CPU by HDMI interface by high-definition video signal, and CPU is transferred to display equipment by described high-definition video signal and plays.
In sum, of the present inventionly thisly to CPU transmission, from the method for the signal of USB main equipment, utilize the controller of an integration USB from functions of the equipments module, MMC from functions of the equipments module and signal conversion module, the signal of usb protocol form is converted to the signal of MMC protocol format, and MMC has sent to the CPU of MMC main equipment from functions of the equipments module integrated by the signal of this MMC protocol format in controller.The signal of realizing USB main equipment in main frame by conversion is transferred in CPU.The present invention also provide based on this to CPU transmission a kind of signal transmission system from the method for the signal of USB main equipment, by this transmission system, realize the transmission of the sound signal of usb protocol form between main frame and CPU and MMC protocol format, by this system, can also realize the transmission of vision signal between the main frame of integration USB main equipment and the CPU of integrated MMC main equipment simultaneously.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. the method from the signal of USB main equipment to CPU transmission, is characterized in that, described method comprises:
Utilize USB to receive the signal from the usb protocol form of USB master transmissions from equipment;
The signal of the signal converting multimedia storage card MMC protocol format of the described usb protocol form that USB is received from equipment;
Utilize MMC from equipment by the signal of described MMC protocol format, passed to the CPU of MMC main equipment integrated.
2. the method for claim 1, is characterized in that, described signal is sound signal.
3. the method for claim 1, is characterized in that, the method further comprises:
Utilize MMC to receive described CPU from equipment and gather by audio collecting device, and the sound signal of transmitting by MMC protocol format;
The sound signal of the MMC protocol format that described MMC is received from equipment converts the signal of usb protocol form to;
Utilize described USB receive the signal of described usb protocol form and this signal is passed to described USB main equipment from equipment.
4. method as claimed any one in claims 1 to 3, is characterized in that, the method further comprises:
Receiving video signals, and the vision signal receiving is passed to described CPU by high-definition media interface HDMI.
5. the controller from the signal of USB main equipment to CPU transmission, is characterized in that, this controller comprises: USB is from functions of the equipments module, signal conversion module and MMC from functions of the equipments module;
Described USB is from functions of the equipments module, for receiving the signal from the usb protocol form of USB master transmissions;
Described signal conversion module, for converting the signal of described usb protocol form to the signal of MMC protocol format;
Described MMC is from functions of the equipments module, for by the signal of described MMC protocol format, passed to the CPU of MMC main equipment integrated.
6. controller as claimed in claim 5, is characterized in that, described signal is sound signal.
7. the controller as described in claim 5 or 6, is characterized in that, described controller also gathers and adopt the sound signal of MMC protocol format transmission by audio collecting device for receiving described CPU;
Described MMC from functions of the equipments module also for receiving the signal of the MMC protocol format that described CPU passes back;
Described signal conversion module also converts the signal of usb protocol form to for the signal of MMC protocol format that described MMC is received from equipment;
Described USB from functions of the equipments module also for receiving the signal of the described usb protocol form that described signal conversion module converts to and this signal being passed to described USB main equipment.
8. the system from the signal of USB main equipment to CPU transmission, is characterized in that, this system comprises: USB main equipment, integrated CPU and the controller as described in any one in claim 5 to 7 of MMC main equipment;
Described USB main equipment, for passing to described controller by signal according to usb protocol;
The described integrated CPU of MMC main equipment, for receiving the signal of the MMC protocol format of described controller transmission by MMC main equipment.
9. system as claimed in claim 8, is characterized in that, described signal is sound signal.
10. system as claimed in claim 8 or 9, is characterized in that, this system further comprises: the audio playing apparatus that connects described CPU;
Or,
This system further comprises: the audio collecting device and the audio playing apparatus that connect described CPU;
Or,
This system further comprises: the audio playing apparatus and the display equipment that connect described CPU, described USB main equipment is transferred to described CPU by HDMI interface by high-definition video signal, and described CPU is transferred to described display equipment by described high-definition video signal and plays;
Or,
This system further comprises: the audio playing apparatus that connects described CPU be connected described USB main equipment and the vision signal of USB main equipment passed to the video source device of CPU by HDMI interface.
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| CN201310686395.0A CN103744822B (en) | 2013-12-13 | 2013-12-13 | Method, controller and system for transmitting signals from USB main equipment to CPU |
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Cited By (1)
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| CN110139054A (en) * | 2019-05-23 | 2019-08-16 | 深圳市显盈科技股份有限公司 | A kind of conversion circuit and multi-functional data communication system of multi-functional data interface |
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| WO2005078592A1 (en) * | 2004-02-09 | 2005-08-25 | Lenovo (Beijing) Limited | A multifunction data storage equipment and method |
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