CN101794205B - System and equipment for realizing wireless control of desktop personal computer (PC) - Google Patents
System and equipment for realizing wireless control of desktop personal computer (PC) Download PDFInfo
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- CN101794205B CN101794205B CN2010101113545A CN201010111354A CN101794205B CN 101794205 B CN101794205 B CN 101794205B CN 2010101113545 A CN2010101113545 A CN 2010101113545A CN 201010111354 A CN201010111354 A CN 201010111354A CN 101794205 B CN101794205 B CN 101794205B
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Abstract
The invention discloses a system and equipment for realizing wireless control of a desktop personal computer (PC), which aims to solve the problem that in the prior art, the desktop PC equipment needs to be updated for realizing the portability of the desktop PC, so that partial original equipment of the desktop PC can not be used, thereby causing waste of hardware resources. The system comprises main control equipment and auxiliary control equipment which carries out wireless communication with the main control equipment, wherein the main control equipment is connected with a host of the desktop PC and is used for sending video signals to the auxiliary control equipment and receiving control signals sent from the auxiliary control equipment; and the auxiliary control equipment is connected with an operating terminal and a display terminal of the desktop PC and is used for sending control signals to the main control equipment and receiving video signals sent from the main control equipment. By adopting the technical scheme of the invention, wireless control of the desktop PC can be realized only by arranging the system on the current desktop PC, thereby preventing the original equipment from being idle, and reducing the waste of hardware resources.
Description
Technical field
The present invention relates to mobile terminal device, the system, the main control end equipment that relate in particular to a kind of realization Desktop PC (Personal Computer, PC) machine controlled in wireless reach from control end equipment.
Background technology
At present; The every aspect that well-known desktop PC has been gone into the thick of life; Desktop PC is in irreplaceable status with its low price, high-performance always; But along with the facilitation requirement of the modern life, because the display terminal of PC is (like CRT (Cathode Ray Tube, cathode-ray tube (CRT)) display screen, LCD (Liquid Crystal Display; LCDs) etc.), operating terminal (like mouse, keyboard etc.) must link to each other with main frame through data line, thereby feasible development for PC receives very big restriction.
For solving the display terminal in the desktop PC, the problem that operating terminal links to each other with main frame through data line respectively; At present; Wireless mouse, Wireless Keyboard and wireless display unit etc. have been produced; Also realized main frame and display are integrated on the equipment, through USB (Universal Serial Bus, USB) equipment replace video card and with the display wireless connections.
Prior art; Though realized wireless penetration to a certain extent to the equipment component of desktop PC; But have following defective: user's needs are bought mouse, keyboard, display even the complete machine etc. with radio function separately; Thereby making to have now need can not continue through operating terminal, the display terminal that data line is connected with main frame on the PC to use, and causes the waste of hardware resource; In addition; The scheme that replaces video card through USB interface; Need PC must have high speed USB 2.0 interfaces, therefore, be directed to the existing desktop PC that does not have the USB2.0 interface and then can not support this kind scheme; Also need improve if need to carry out this scheme, not have good popularization existing desktop PC.
Summary of the invention
To the existing technical matters that realizes that desktop PC controlled in wireless mode exists; The object of the invention is to provide a kind of system, main control end equipment of desktop PC controlled in wireless realized to reach from control end equipment; To be implemented on the basis of not improving existing desktop PC, realize controlled in wireless to existing desktop PC.
A kind of system that realizes the desktop PC controlled in wireless, comprise main control end equipment, with said main control end equipment carry out radio communication from control end equipment:
Main control end equipment; Be connected with the main frame of desktop PC; Be used for converting the vision signal of said main frame transmission to digital signal; And this digital signal converted to encode after the wireless signal, the wireless signal behind the coding is sent to said from control end equipment, said wireless signal is the general-purpose serial bus USB signal; And, be used to receive said control signal of sending from control end equipment, convert the general controls signal to after this control signal is decoded, and this general controls signal is sent to said main frame;
From control end equipment, be connected with operating terminal, the display terminal of said desktop PC, be used for the control signal that said operating terminal sends is encoded, and the control signal after will encoding is sent to said main control end equipment; And, be used to receive the wireless signal that said main control end equipment sends, and convert vision signal to after this wireless signal decoded, and this vision signal is sent to said display terminal;
Said main control end equipment comprises a VGA interface module, a VGA-USB modular converter, the first Wireless USB main control module, the first Wireless USB RF receiving and transmission module and the first mouse-keyboard interface module, wherein:
The one VGA interface module is connected with the VGA interface of said main frame, is used to receive the vision signal that said main frame sends;
The one VGA-USB modular converter; Be connected with a said VGA interface module; Be used for converting the vision signal that a said VGA interface module receives to digital signal, and this digital signal converted to be sent to the said first Wireless USB main control module after the usb signal;
The first Wireless USB main control module; Be connected between said first mouse-keyboard interface module and the said first Wireless USB RF receiving and transmission module; Be used for said usb signal is encoded, and the usb signal after will encoding is sent to the first Wireless USB RF receiving and transmission module; And, be used for the control signal that receives is decoded, and decoded control signal converted to be sent to the said first mouse-keyboard interface module after the general controls signal;
The first Wireless USB RF receiving and transmission module is used for the usb signal that the said first Wireless USB main control module sends is sent to said from control end equipment; And, be used to receive the control signal of sending, and this control signal is sent to the said first Wireless USB main control module from control end equipment;
The first mouse-keyboard interface module is connected with the mouse-keyboard interface of said main frame, is used for the general controls signal that a said USB main control module sends is sent to said main frame.
A kind of main control end equipment; Be connected with the main frame of desktop PC; The operating terminal of said desktop PC and display terminal be connected from control end equipment; This main control end equipment comprises a VGA interface module, a VGA-USB modular converter, the first Wireless USB main control module, the first Wireless USB RF receiving and transmission module and the first mouse-keyboard interface module, wherein:
The one VGA interface module is connected with the VGA interface of said main frame, is used to receive the vision signal that said main frame sends;
The one VGA-USB modular converter; Be connected with a said VGA interface module; Be used for converting the vision signal that a said VGA interface module receives to digital signal, and this digital signal converted to be sent to the said first Wireless USB main control module after the usb signal;
The first Wireless USB main control module; Be connected between said first mouse-keyboard interface module and the said first Wireless USB RF receiving and transmission module; Be used for said usb signal is encoded, and the usb signal after will encoding is sent to the first Wireless USB RF receiving and transmission module; And, be used for the control signal that receives is decoded, and decoded control signal converted to be sent to the said first mouse-keyboard interface module after the general controls signal;
The first Wireless USB RF receiving and transmission module is used for the usb signal that the said first Wireless USB main control module sends is sent to said from control end equipment; And, be used to receive the control signal of sending, and this control signal is sent to the said first Wireless USB main control module from control end equipment;
The first mouse-keyboard interface module is connected with the mouse-keyboard interface of said main frame, is used for the general controls signal that a said USB main control module sends is sent to said main frame.
A kind of from control end equipment; Be connected with display terminal with the operating terminal of desktop PC; The main frame of said desktop PC is connected with main control end equipment; Should comprise the 2nd VGA interface module, the 2nd USB-VGA modular converter, the second Wireless USB main control module, the second Wireless USB RF receiving and transmission module and the second mouse-keyboard interface module from control end equipment, wherein:
The 2nd VGA interface module is connected with said display terminal, is used for vision signal is sent to said display terminal;
The second mouse-keyboard interface module is connected with said operating terminal, is used to receive the control signal that said operating terminal sends, and control signal is sent to the said second Wireless USB main control module;
The second Wireless USB RF receiving and transmission module is connected with the second Wireless USB main control module, is used to receive the usb signal that main control end equipment sends, and this usb signal is sent to the second Wireless USB main control module; And, be used for control signal is sent to main control end equipment;
The second Wireless USB main control module is connected with said the 2nd USB-VGA modular converter, is used for the usb signal that receives is decoded, and decoded usb signal is sent to the 2nd USB-VGA modular converter; And, be used for the control signal that the said second mouse-keyboard interface module is sent is encoded, and the control signal after will encoding is sent to the said second Wireless USB RF receiving and transmission module;
The 2nd USB-VGA modular converter is connected between the second Wireless USB main control module and said the 2nd VGA interface module, is used for converting the usb signal that receives to vision signal, and with this video signal transmission to said the 2nd VGA interface module.
The embodiment of the invention provides a kind of system that realizes the desktop PC controlled in wireless, this system comprise main control end equipment with from control end equipment, wherein main control end equipment with communicate through wireless mode from controlling between the end equipment; Main control end equipment is connected with the main frame of desktop PC, is connected with display terminal, the operating terminal of this desktop PC from control end equipment; Adopt technical scheme of the present invention; The main frame of desktop PC need not be connected through data line with operating terminal, display terminal; Main frame carries out radio communication through main control end equipment and operating terminal, display terminal; Thereby realized controlled in wireless to existing desktop PC; Need not improve, realize the desktop PC controlled in wireless is compared through mouse, the keyboard bought on the existing desktop PC of equipment replacements such as wireless mouse, Wireless Keyboard, reduce the problem of hardware resource waste with existing to existing desktop PC; Therefore, adopt technical scheme of the present invention, need not improve the controlled in wireless that can realize, thereby reduced the waste of hardware resource, improve resource utilization existing desktop PC to desktop PC.
Description of drawings
Fig. 1 is the electrical block diagram of main control end equipment in the embodiment of the invention;
Fig. 2 is from controlling the electrical block diagram of end equipment in the embodiment of the invention;
Fig. 3 is the circuit structure diagram of Wireless USB RF receiving and transmission module in the embodiment of the invention;
Fig. 4 is the circuit structure diagram of Wireless USB main control module in the embodiment of the invention;
Fig. 5 is the circuit structure diagram of VGA-USB modular converter in the embodiment of the invention;
Fig. 6 A is the circuit structure diagram of three core power supply adapters in the embodiment of the invention;
Fig. 6 B is the centre tapped circuit diagram in the embodiment of the invention;
Fig. 7 is the workflow diagram of Wireless USB main control module in the embodiment of the invention;
Fig. 8 is the workflow diagram of VGA-USB modular converter in the embodiment of the invention.
Embodiment
For solving the problems of the technologies described above; A kind of system that realizes the desktop PC controlled in wireless is provided in the embodiment of the invention; This system comprise main control end equipment with radio transmission-receiving function and pairing with from control end equipment; Main control end equipment is connected with the main frame of desktop PC, is connected with display terminal (like display), the operating terminal (like keyboard, mouse etc.) of desktop PC from control end equipment, realizes the controlled in wireless to desktop PC through main control end equipment and from the radio communication between the control end equipment.
In the embodiment of the invention, main control end equipment is connected with the corresponding interface of desktop PC main frame through VGA (Video Graphic Array shows the drawing array) video interface, PS/2 (Personal System 2, ps 2) interface or the USB interface of standard; Be connected with display terminal (like display), the operating terminal (like keyboard, mouse etc.) of desktop PC from control end equipment.
Through main control end equipment with realize that from control end equipment the principle to the controlled in wireless of desktop PC is following:
Aspect the controlled in wireless that realizes video playback, main control end equipment is converted into digital signal with the VGA simulating signal of desktop PC main frame; Again this digital signal is converted into wireless signal (like the usb signal of standard, other wireless signal; Like GPIO (General Purpose Input Output; General I/O) signal, UART (the Universal Asynchronous Receiver/Transmitter of interface output; Universal asynchronous reception/transmission) signal, SPI (the Serial Peripheral Interface of interface output; Serial Peripheral Interface (SPI)) sends to from control end equipment through wireless mode after encoding the signal of interface output etc.), and to this wireless signal; Decode from the wireless signal that control end equipment interconnection is received, convert decoded wireless signal to the wire and wireless signal; Convert this wire signal to vision signal; (the VGA interface circuit is used for impedance matching, ESD (Electro-Static Discharge through the VGA interface circuit after converting this vision signal to the VGA simulating signal again; Static discharge), EMI processing such as (Electro Magnetic Interference, electromagnetic interference (EMI))) transfer to display terminal;
Aspect the controlled in wireless that realizes operating terminal, from control end equipment the user is encoded through the control signal of operation terminal device (like mouse or keyboard) input, and the control signal after will encoding is sent to main control end equipment through the Wireless USB interface; The control signal that the main control end equipment interconnection is received is decoded, and converts decoded control signal to universal signal, this universal signal is sent to the main frame of desktop PC through interface circuit.
For more detailed description technical scheme of the present invention, technical scheme of the present invention is carried out detailed description below in conjunction with Figure of description.
In the embodiment of the invention, main control end equipment is with basic identical from the framework of control end equipment, and both nucleus modules are Wireless USB RF receiving and transmission module, Wireless USB main control module and VGA-USB modular converter.
Referring to Fig. 1, be the electrical block diagram of the main control end equipment that provides in the embodiment of the invention, main control end equipment 2 comprises:
The one VGA interface module 21 is connected with VGA interface 11 on the desktop PC HPI panel 1;
The first mouse-keyboard interface module 23 is connected with mouse-keyboard interface 12 on the desktop PC HPI panel 1;
The one VGA-USB modular converter 22 is connected between the VGA interface module 21 and the first Wireless USB main control module 24;
The first Wireless USB main control module 24 is connected between the first mouse-keyboard interface module 23 and the first Wireless USB RF receiving and transmission module 25;
The first Wireless USB RF receiving and transmission module 25 is connected with first antenna 41, wherein:
The one VGA interface module 21 is used to receive the VGA simulating signal, and the VGA simulating signal that receives is sent to a VGA-USB modular converter 22.
The one VGA-USB modular converter 22 is used for that the VGA simulating signal that receives is carried out analog to digital conversion and obtains digital signal; This digital signal is converted to the usb signal of standard; This usb signal is sent to the first Wireless USB main control module 24.
The first Wireless USB main control module 24 is used for the usb signal that receives is encoded, and the usb signal after will encoding is sent to the first Wireless USB RF receiving and transmission module 25; And, be used for the control signal of sending from control end equipment is decoded, and convert decoded control signal to the general controls signal is sent to PC HPI panel 1 afterwards through the first mouse-keyboard interface module 23 mouse-keyboard interface 12.
The first Wireless USB RF receiving and transmission module 25 is used for the usb signal behind the coding is sent to from control end equipment 3 through first antenna 41; And, be used to receive the control signal of sending, and this control signal is sent to the first Wireless USB main control module 25 from control end equipment 3.
In the embodiment of the invention, can be that each module in the main control end equipment 2 provides power supply through existing power supply presentation mode, as, each module in the main control end equipment 2 is connected with conventional power supply through power lead respectively.
Preferably; In order to reduce power lead quantity on the basis of power supply being provided for main control end equipment 2; Because the main control end equipment 2 in the embodiment of the invention is in the application of reality, it only needs the less electric current promptly can operate as normal, and the electric current of USB interface can drive the main control end equipment work; Therefore, main control end equipment 2 can obtain the direct current of 5v from the USB interface of desktop PC; Main control end equipment 2 in the embodiment of the invention comprises that also (this first energy supply control module 26 can pass through LDO (Low Dropout regulator to first energy supply control module 26 that input end is connected with usb 13 in the PC HPI panel 1; Low pressure difference linear voltage regulator), DC-DC (Direct Current to Direct Current; DC voltage converts the converter of DC voltage to) etc. circuit constitute); The output terminal of this first energy supply control module 26 is connected with a VGA interface module 21, a VGA-USB modular converter 22, the first mouse-keyboard interface module 23, the first Wireless USB main control module 24 and the first Wireless USB RF receiving and transmission module 25 respectively, and to a VGA interface module 21, a VGA-USB modular converter 22, the first mouse-keyboard interface module 23, the first Wireless USB main control module 24 and the first Wireless USB RF receiving and transmission module 25 power supply is provided.
Referring to Fig. 2, in the embodiment of the invention from the electrical block diagram of control end equipment, should comprise from control end equipment 3:
The 2nd VGA interface module 34 is connected with the display with VGA interface 5;
The second mouse-keyboard interface module 35 is connected with operating terminal (comprising mouse, keyboard);
The second Wireless USB RF receiving and transmission module 31 is connected with second antenna 42;
The second Wireless USB main control module 33 is connected between the second Wireless USB RF receiving and transmission module 31 and the second mouse-keyboard interface module 35;
The 2nd USB-VGA modular converter 32 is connected between the second Wireless USB main control module 33 and the 2nd VGA interface module 34.
The second Wireless USB RF receiving and transmission module 31 is used to receive the usb signal that main control end equipment 2 sends, and usb signal is sent to the second Wireless USB main control module 33; And, be used for the control signal that the user imports through operating terminal is sent to main control end equipment 2 through Wireless transmission mode.
The second Wireless USB main control module 33 is used for the usb signal that receives is decoded, and should convert wired usb signal to by decoded usb signal, also should be sent to the 2nd USB-VGA modular converter 32 by wired usb signal again; And, be used for the control signal that receives is encoded, and the control signal after will encoding is sent to the second Wireless USB RF receiving and transmission module 31.
The 2nd USB-VGA modular converter 32 is used for wired usb signal is carried out digital-to-analog conversion, and the signal after the digital-to-analog conversion is sent to the display 5 with VGA interface through the 2nd VGA interface module 34.
The second mouse-keyboard interface module 35 is used for the control signal that the user imports through mouse or keyboard is sent to the second Wireless USB main control module 33.
Preferably, power supply is provided, also comprises switch power source adapter 37, the second source control module 36 that is connected with switch power source adapter 37 from control end equipment 3 in the embodiment of the invention in order to give from control end equipment 3; The specification of switch power source adapter 37 be the alternating voltage of 220v to the 5v DC voltage, the electric current of output 500mA; The output terminal of second source control module 36 is connected with the second Wireless USB RF receiving and transmission module 31, the 2nd USB-VGA modular converter 32, the second Wireless USB main control module 33, the 2nd VGA interface module 34 and the second mouse-keyboard interface module 35 respectively, and is that the second Wireless USB RF receiving and transmission module 31, the 2nd USB-VGA modular converter 32, the second Wireless USB main control module 33, the 2nd VGA interface module 34 and the second mouse-keyboard interface module 35 provide power supply.
Preferably, for reducing the quantity of power lead, first energy supply control module 26 has taked the usb 13 from PC HPI panel 1 to obtain power supply, and the power source conversion that obtains is become the needed power supply of main control end equipment 2 each module.Obtain the alternating current of 220v through switch power source adapter 37 from control end equipment 3; And with converting direct current (is that 5v, electric current are the direct supply of 500mA such as output voltage) to after the alternating current process lowering and stabilizing blood pressure processing that obtains; And exporting this direct current to second source control module 36, second source control module 36 converts this direct current to from the control end equipment 3 needed power supply of each module.
Preferably, be further to reduce the quantity of power lead, switch power source adapter 37 is connected with the centre tapped three core power source conversion joint AC power supplies interfaces of being with shown in Fig. 6 A, and obtains the alternating current of 220v from three core power supply adapters; This three cores power supply adapter comprises three core power socket and the core electric power plugs that meet international standard, and center tap (centre tapped circuit connects shown in Fig. 6 B); The central authorities of the three core power supply adapters that adopted in the embodiment of the invention draw three power leads and form a center tap; When reality is used; Can the three core power leads that in the desktop PC are display 5 configurations be inserted in the three core power sockets of this three cores power supply adapter; The core electric power plug of three core power supply adapters is inserted in the three core power sockets of display 5; And with center tap with link to each other from control end equipment 3, thereby realized the AC power of 220V is introduced from control end equipment 3.
In the embodiment of the invention; The first Wireless USB RF receiving and transmission module 25 in the main control end equipment 2, the first Wireless USB main control module 24, a VGA-USB modular converter 22 structure with the second Wireless USB RF receiving and transmission module 31 from control end equipment 3, the second Wireless USB main control module 33, the 2nd USB-VGA modular converter 32 respectively are identical; Below in conjunction with Fig. 3, Fig. 4 and Fig. 5 carry out detailed description to the circuit structure of three modules.
Referring to Fig. 3; For Wireless USB RF receiving and transmission module in the embodiment of the invention (can be the first Wireless USB RF receiving and transmission module 25; Also can be the second Wireless USB RF receiving and transmission module 31) circuit structure diagram; This Wireless USB RF receiving and transmission module is operated on the 2.4GHz frequency range, adopts DSSS (DirectSequence Spread Spectrum, DSSS) technology; To avoid the interference from wireless signals such as 802.11b, Bluetooth, wireless telephone and micro-wave oven in the 2.4GHz frequency range, the Wireless USB RF receiving and transmission module has high sensitivity, low in power consumption.In the embodiment of the invention,, therefore, be that example is carried out detailed description with the circuit structure of the first Wireless USB RF receiving and transmission module 25 because the first Wireless USB RF receiving and transmission module 25 is consistent with the circuit structure of the second Wireless USB RF receiving and transmission module 31.The first Wireless USB RF receiving and transmission module 25 comprises the amplifier 251, the receiver 252 that is used to receive signal, BPF. 253 and the universal amplifier 254 that connect successively on the path that receives signal; On the path that transmits, comprise universal amplifier 256, the BPF. 257, the transmitter 259 that is used to send signal, the amplifier 260 that connect successively; This first Wireless USB RF receiving and transmission module 25 also comprise be connected between receiver 252 and the transmitter 259 synchronously and IQ signal controller 258 (reach synchronously IQ signal controller 258 be used to accomplish to the IQ signal synchronously, work such as sequential), with reach the frequency synthesis unit 255 that IQ signal controller 258 is connected (frequency synthesis unit 255 clocking that combines with external crystal circuit 9 synchronously; And to the clock signal that produces amplify, after the frequency multiplication; Being respectively receiver 252 and transmitter 259 provides work required clock), wherein:
On the direction of sending signal; When the first Wireless USB RF receiving and transmission module 25 receives the usb signal of the first Wireless USB main control module, 24 transmissions; With this usb signal through universal amplifier 256 amplify, BPF. 257 carries out being sent to transmitter 259 after the filtering, 259 pairs of these usb signals of transmitter are sent to first antenna 41 through amplifier 260 after handling.
On the direction that receives signal; When first antenna 41 receives after the control signal that control end equipment 3 sends; 251 amplifications are sent to receiver 252 afterwards through amplifier with this control signal; 252 pairs of these control signals of receiver are handled, and the control signal after handling is sent to the first Wireless USB main control module 24 through BPF. 253 filtering, universal amplifier 254 after amplifying.
Preferably, disturb, in the embodiment of the invention, between first antenna 41 and the first Wireless USB RF receiving and transmission module 25, be connected with BPF. 8 for further reducing at the signal that receives signal or send in the signal process; And/or, between second antenna 42 and the second Wireless USB RF receiving and transmission module 31, be connected with BPF. 8.
Preferably, the first Wireless USB RF receiving and transmission module 25 also comprises the control module 261 that is connected with the first Wireless USB main control module 24 through signal wire.This control module 261 is used to receive the instruction that the first Wireless USB main control module 24 sends; The first Wireless USB RF receiving and transmission module 25 at its place being controlled according to instruction, and with the feedback of status of the first Wireless USB RF receiving and transmission module 25 to the first Wireless USB main control module 24; And, be used for signal is carried out the control and the feedback of functions such as power adjustments, signal intensity detecting.
Preferably, frequency synthesis unit 255 adopts external crystal to originate as clock, and for reaching IQ signal controller 258 synchronously clock reference is provided, and, also clock reference is provided for the Wireless USB main control module.
Referring to Fig. 4, be the electrical block diagram of the Wireless USB main control module in the embodiment of the invention, the Wireless USB main control module is used for radiofrequency signal is carried out baseband modulation and demodulation, encrypting and decrypting, usb protocol conversion and data-switching etc.Because the first Wireless USB main control module 24 is consistent with the circuit structure of the second Wireless USB main control module 33, therefore, is that example is carried out detailed explanation with the first Wireless USB main control module 24 in the main control end equipment 2.This first Wireless USB main control module 24 comprises the reception ADC unit 241 that is connected with the first Wireless USB RF receiving and transmission module 25 and emission DAC unit 242, be connected and receive ADC unit 241 (reception/emission digital processing element 244 is used for CRC check processing, protocol processes etc. with launching reception/emission digital processing element 244 between the DAC unit 242; For reducing the signal Processing time delay; Hardware algorithms are adopted in this reception/emission digital processing element 244), the radio frequency control module 243 (radio frequency control module 243 is used for controlling the duty of the first Wireless USB RF receiving and transmission module 25, as controls the emissive power of the first Wireless USB RF receiving and transmission module 25) that is connected with control module 261 in the first Wireless USB RF receiving and transmission module 25 and arm processor 246 (this arm processor 246 be used to discern to method, apparatus whether be the main control end equipment of these arm processor 246 place ends or from controlling end equipment, when determine transmission video signal and when determining transmission of control signals).
The principle that the first Wireless USB main control module 24 is handled to the received signal is following:
Receive ADC unit 241; Be connected with reception/emission digital processing element 244; Be used for the control signal that the said first Wireless USB RF receiving and transmission module 25 that receives sends is carried out analog to digital conversion, and the control signal after the analog to digital conversion is sent to reception/emission digital processing element 244;
Reception/emission digital processing element 244; Be connected with emission DAC unit 242 with reception ADC unit 241 respectively; Be used for decoding, and decoded control signal is sent to a VGA-USB modular converter 22 through USB interface receiving the control signal of sending ADC unit 241; And, be used for the usb signal that receives from USB interface is encoded, and the usb signal after will encoding is sent to emission DAC unit 242;
The principle that the second Wireless USB main control module 33 is handled to the received signal is following:
Receive the ADC unit; Be connected with reception/emission digital processing element; Be used for the usb signal that the second Wireless USB RF receiving and transmission module 31 that receives sends is carried out analog to digital conversion, and the usb signal after the analog to digital conversion is sent to said reception/emission digital processing element;
Reception/emission digital processing element is connected between reception ADC unit and the said emission DAC unit, be used for encoding to receiving the usb signal that sends the ADC unit, and the usb signal after will encoding is sent to the 2nd USB-VGA modular converter 32 through USB interface; And, the control signal that the second mouse-keyboard interface module 35 is sent is encoded, and the control signal after will encoding is sent to emission DAC unit;
Emission DAC unit is used for the control signal that reception/emission digital processing element sends is carried out digital-to-analog conversion, and the control signal after the digital-to-analog conversion is sent to the second Wireless USB RF receiving and transmission module 31.
Preferably; For further guaranteeing signal safety of transmission and reliability; The above-mentioned first Wireless USB main control module 24 comprises that also (this encrypting and decrypting unit 245 can adopt AES (Advanced Encryption Standard, the Advanced Encryption Standard) encryption mechanism of 128bit in the encrypting and decrypting unit 245 that is connected with reception/emission digital processing element 244; This encrypting and decrypting unit 245 is connected between reception/emission digital processing element 244 and the USB interface, be used for the usb signal that receives from USB interface is encrypted, and the usb signal after will encrypting is sent to reception/emission digital processing element 244; And, decipher receiving the control signal that receives the transmission of ADC unit, and the control signal after will deciphering is sent to reception/emission digital processing element 244.
Preferably, for further guaranteeing signal safety of transmission and reliability, the above-mentioned second Wireless USB main control module 33 also can comprise above-mentioned encrypting and decrypting unit; This encrypting and decrypting unit is used for the usb signal that the reception ADC unit to the second Wireless USB main control module 33 receives to be deciphered, and the usb signal after will deciphering is sent to reception/emission digital processing element; And, the control signal that the second mouse-keyboard interface module 35 is sent is encrypted, and the control signal after will encrypting is sent to reception/emission digital processing element.
Preferably, the arm processor in the embodiment of the invention 246 is high performance ARM9 processor.
Preferably, for improving extendability, the Wireless USB main control module in the embodiment of the invention is supported polytype interface, like GPIO interface, USB interface, UART interface, SPI interface etc.
Preferably; For making the normal operation that realizes the Wireless USB main control module through less code; Wireless USB main control module in the embodiment of the invention adopts inner ROM (Read Only Memory; ROM (read-only memory)) and internal RAM (Random Access Memory, random access memory) carry out the storage and the computing of code.
Preferably, for guaranteeing system bandwidth, the reception ADC unit 241 in the embodiment of the invention all has higher precision with emission DAC unit 242.
In the embodiment of the invention, be not limited in AES encrypting and decrypting mode, can also adopt existing comparatively conventional encrypting and decrypting mode, so long as main control end equipment and consistent the getting final product of encrypting and decrypting mechanism of adopting from control end equipment.
Referring to Fig. 5, be the electrical block diagram of the VGA-USB modular converter in the embodiment of the invention, this module realizes the protocol conversion between VGA interface and the standard USB2.0 interface, the VGA interface is the display card type that present PC is supported.Because the VGA-USB modular converter 22 in the embodiment of the invention is consistent with the circuit structure of the 2nd USB-VGA modular converter 32; Be described in detail with a VGA-USB modular converter 22 below, a VGA-USB modular converter 22 comprises usb interface unit 221, DAC/ADC unit 223, be connected the arm processor 222 between usb interface unit 221 and the DAC/ADC unit 223, ROM 224 and the RAM 225 that is connected with arm processor 222.
The one VGA-USB modular converter 22 is used for usb signal or vision signal are handled as follows:
DAC/ADC unit 223; Be connected with arm processor 222; Be used for the vision signal that a VGA interface module 21 that receives is sent is carried out analog to digital conversion, and the vision signal after the analog to digital conversion is sent to arm processor 222 with the form transmission arm processor 222 of bus data;
Arm processor 222 is connected between DAC/ADC unit 223 and the usb interface unit 221, is used for the usb signal of the standard that converts to according to the vision signal that the standard usb protocol sends DAC/ADC unit 223, and this usb signal is sent to usb interface unit 221;
Usb interface unit 221 is used for the usb signal that arm processor 222 sends is sent to the first Wireless USB main control module 24.
From control end equipment 3, the 2nd USB-VGA modular converter 32 is used for usb signal or vision signal are handled as follows:
Usb interface unit is connected with arm processor, is used to receive the usb signal that the second Wireless USB main control module 33 sends, and this usb signal is sent to arm processor;
Arm processor; Be connected between usb interface unit and the DAC/ADC unit; The vision signal (signals such as the vision signal of standard comprises red, green, blue and row is synchronous, field synchronization) that is used for standard that the usb signal that usb interface unit sends is converted to), and with this vision signal be sent to the DAC/ADC unit;
The DAC/ADC unit is used for the vision signal that arm processor sends is carried out digital-to-analog conversion, and the vision signal after the digital-to-analog conversion is sent to the 2nd VGA interface module 34.
Preferably; For improving the work efficiency of VGA-USB modular converter; VGA-USB modular converter in the embodiment of the invention is the chip with bi-directional conversion function, and the usb signal that it both can convert the vision signal of standard into standard can also convert usb signal into vision signal.This VGA-USB modular converter also can make up the control data flow path direction through the logic level of its two pins, and (data flow direction comprises and converts usb signal to vision signal; Convert vision signal to usb signal); It specifically is embodied as: the VGA-USB modular converter also comprises and flows to control module 226; This flows to control module 226 and is connected with resistance R 1 and resistance R 2, and when only connecting R1, the VGA-USB modular converter is realized the usb signal of the standard that converts the vision signal of standard into; When only connecting R2, the VGA-USB modular converter is realized converting usb signal into vision signal.
Preferably; For guaranteeing the clock synchronization property of a VGA-USB modular converter 22 and the first Wireless USB RF receiving and transmission module 25 and the first Wireless USB main control module 24; VGA-USB modular converter 22 in the embodiment of the invention comprises clock unit 227, and this clock unit 227 is adjusted according to the clock of standard.
Face the workflow of Wireless USB main control module and the workflow of VGA-USB modular converter down and carry out detailed description.
Referring to Fig. 7; Workflow for Wireless USB main control module in the embodiment of the invention; This Wireless USB main control module is accomplished initialization in the system back that powers on, and scans wireless channel successively, judges whether current wireless channel has and (need to prove from controlling end equipment of the main control end equipment pairing at this Wireless USB main control module place; Main control end equipment with match from control end equipment; What main control end equipment was corresponding with it is provided with the pairing sign indicating number from control end equipment, main control end equipment with from control end equipment can according to this pairing sign indicating number detect with its match mutually from controlling end equipment or main control end equipment) data of being sent, as if having; The carrying out signal to noise ratio (S/N ratio) from control end equipment and detect of main control end equipment and its pairing, and control emissive power separately; Can carry out data communication when main control end equipment and after control end equipment connects.The data type of the Wireless USB main control module transmission in the embodiment of the invention comprises video data, control data etc.; These data are distinguished through certain coded system and instruction; Agreement according to set communicates; After receiving packet with the corresponding end of this Wireless USB main control module place end, decode accordingly, and with decoded data map to different equipment.This flow process comprises:
After step 701, system powered on, the Wireless USB main control module carried out initialization.
Step 702～703, Wireless USB main control module scan wireless channel successively; And whether the wireless channel of judging current scanning has the data from the transmission of control end equipment of matching with this Wireless USB main control module place main control end equipment; If then execution in step 705 is arranged, otherwise execution in step 704.
The carrying out signal to noise ratio (S/N ratio) from control end equipment and detect of the main control end equipment at step 705, this Wireless USB main control module place and its pairing, and control emissive power are set up main control end equipment and from controlling the communication link between the end equipment.
Step 707～708, main control end equipment with communicate from control end equipment, the Wireless USB main control module receives usb signal or control signal, and encrypts to the received signal or decipher.
Referring to Fig. 8; Be VGA-USB modular converter principle of work process flow diagram in the embodiment of the invention; This VGA-USB modular converter is accomplished initialization after system powers on; Start and to flow to control module 226, with specified data stream translation direction (conversion direction comprise convert usb signal to, convert vision signal to) from usb signal from vision signal; If conversion direction is that vision signal converts usb signal to, then the VGA-USB modular converter judges whether the input of vision signal, if there is not the vision signal input, then control system enters into dormant state and starts regularly inquiry; If conversion direction is that usb signal converts vision signal to, then the VGA-USB modular converter judges whether the input of usb signal, if there is not the usb signal input, then control system enters into dormant state and starts regularly inquiry.If when having detected the input of vision signal or usb signal, operations such as the VGA-USB modular converter is decoded to the received signal, encapsulation.This flow process comprises:
After step 801, system powered on, the VGA-USB modular converter carried out initialization.
Step 802, startup flow to control module 226; With the specified data flow path direction; If determine data flow direction, if determine data flow direction for to convert usb signal to vision signal then execution in step 806～808 for to convert vision signal to usb signal then execution in step 803～805.
Whether step 805, control system are in dormant state, and start regularly inquiry mechanism, have vision signal to be sent to this VGA-USB modular converter to realize inquiry regularly.
Whether step 808, control system are in dormant state, and start regularly inquiry mechanism, have usb signal to be sent to this VGA-USB modular converter to realize inquiry regularly.
In the embodiment of the invention, the main control end equipment through having radio transmission-receiving function and pairing with realize controlled in wireless from control end equipment to desktop PC; The main frame of desktop PC is connected with main control end equipment, and main frame carries out radio communication through main control end equipment and operating terminal or display terminal; The operating terminal of this desktop PC, display terminal are connected respectively with from control end equipment, through carrying out radio communication from control end equipment and main frame; Adopt technical scheme of the present invention; Need not improve existing desktop PC; Only need connect the main control end equipment of this pairing and realize controlled in wireless at desktop PC to existing desktop PC from control end equipment; Therefore, adopt technical scheme of the present invention on original desktop PC, to increase main control end equipment and can realize controlled in wireless, need improve and cause the problem of waste of hardware resource existing desktop PC thereby overcome in the prior art also from control end equipment.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a system that realizes the desktop PC controlled in wireless is characterized in that, comprise main control end equipment, with said main control end equipment carry out radio communication from control end equipment:
Main control end equipment; Be connected with the main frame of desktop PC; Be used for converting the vision signal of said main frame transmission to digital signal; And this digital signal converted to encode after the wireless signal, the wireless signal behind the coding is sent to said from control end equipment, said wireless signal is the general-purpose serial bus USB signal; And, be used to receive said control signal of sending from control end equipment, convert the general controls signal to after this control signal is decoded, and this general controls signal is sent to said main frame;
From control end equipment, be connected with operating terminal, the display terminal of said desktop PC, be used for the control signal that said operating terminal sends is encoded, and the control signal after will encoding is sent to said main control end equipment; And, be used to receive the wireless signal that said main control end equipment sends, and convert vision signal to after this wireless signal decoded, and this vision signal is sent to said display terminal;
Said main control end equipment comprises a VGA interface module, a VGA-USB modular converter, the first Wireless USB main control module, the first Wireless USB RF receiving and transmission module and the first mouse-keyboard interface module, wherein:
The one VGA interface module is connected with the VGA interface of said main frame, is used to receive the vision signal that said main frame sends;
The one VGA-USB modular converter; Be connected with a said VGA interface module; Be used for converting the vision signal that a said VGA interface module receives to digital signal, and this digital signal converted to be sent to the said first Wireless USB main control module after the usb signal;
The first Wireless USB main control module; Be connected between said first mouse-keyboard interface module and the said first Wireless USB RF receiving and transmission module; Be used for said usb signal is encoded, and the usb signal after will encoding is sent to the first Wireless USB RF receiving and transmission module; And, be used for the control signal that receives is decoded, and decoded control signal converted to be sent to the said first mouse-keyboard interface module after the general controls signal;
The first Wireless USB RF receiving and transmission module is used for the usb signal that the said first Wireless USB main control module sends is sent to said from control end equipment; And, be used to receive the control signal of sending, and this control signal is sent to the said first Wireless USB main control module from control end equipment;
The first mouse-keyboard interface module is connected with the mouse-keyboard interface of said main frame, is used for the general controls signal that a said USB main control module sends is sent to said main frame.
2. the system of claim 1 is characterized in that, the said first Wireless USB RF receiving and transmission module comprises signal receiving branch, signal transmitting branch and control module;
Said signal receiving branch makes progress at receiving side signal, comprises first amplifier, receiver, first BPF. and first universal amplifier that connect successively;
Said signal transmitting branch makes progress at signalling, comprises second universal amplifier, second BPF., transmitter and second amplifier that connect successively;
Control module is connected with the said first Wireless USB main control module, is used to receive the instruction of the said first Wireless USB main control module, according to this instruction the said first Wireless USB RF receiving and transmission module is controlled; And, the duty of the said first Wireless USB RF receiving and transmission module is fed back to the said first Wireless USB main control module.
3. the system of claim 1 is characterized in that, the said first Wireless USB main control module comprises reception ADC unit, reception/emission digital processing element, emission DAC unit and USB interface, wherein:
Receive the ADC unit; Be connected with said reception/emission digital processing element; Be used for the control signal that the said first Wireless USB RF receiving and transmission module that receives sends is carried out analog to digital conversion, and the control signal after the analog to digital conversion is sent to said reception/emission digital processing element;
Reception/emission digital processing element; Be connected with emission DAC unit with said reception ADC unit respectively; Be used for the control signal that said reception ADC unit sends is decoded, and send to the said first mouse-keyboard interface module after converting decoded control signal to the general controls signal; And, be used for the usb signal that receives from USB interface is encoded, and the usb signal after will encoding is sent to said emission DAC unit;
Emission DAC unit is used for the usb signal that said reception/emission digital processing element sends is carried out digital-to-analog conversion, and the usb signal after the digital-to-analog conversion is sent to the said first Wireless USB RF receiving and transmission module.
4. system as claimed in claim 3 is characterized in that, the said first Wireless USB main control module also comprises the radio frequency control module;
The radio frequency control module is connected with the said first Wireless USB RF receiving and transmission module, is used to control the duty of the said first Wireless USB RF receiving and transmission module.
5. system as claimed in claim 3 is characterized in that, the said first Wireless USB main control module also comprises the encrypting and decrypting unit;
The encrypting and decrypting unit is connected between said reception/emission digital processing element and the USB interface, be used for the usb signal that receives from said USB interface is encrypted, and the usb signal after will encrypting is sent to said reception/emission digital processing element; And, decipher receiving the control signal of sending said reception ADC unit, and the control signal after will deciphering is sent to said reception/emission digital processing element.
6. system as claimed in claim 2 is characterized in that, a said VGA-USB modular converter comprises usb interface unit, arm processor and DAC/ADC unit, wherein:
The DAC/ADC unit is connected with said arm processor, is used for the vision signal that a said VGA interface module that receives is sent is carried out analog to digital conversion, and the vision signal after the analog to digital conversion is sent to said arm processor;
Arm processor is connected between said DAC/ADC unit and the said usb interface unit, is used for converting the vision signal that said DAC/ADC unit sends to usb signal according to the standard usb protocol, and this usb signal is sent to said usb interface unit;
Usb interface unit is used for the usb signal that said arm processor sends is sent to the said first Wireless USB main control module.
7. system as claimed in claim 6; It is characterized in that; A said VGA-USB modular converter also comprises: flow to control module, be connected with said arm processor, be used to control a said VGA-USB modular converter and convert usb signal to vision signal; Perhaps, control a said VGA-USB modular converter and convert vision signal to usb signal.
8. the system of claim 1; It is characterized in that; Saidly comprise the 2nd VGA interface module, the 2nd USB-VGA modular converter, the second Wireless USB main control module, the second Wireless USB RF receiving and transmission module and the second mouse-keyboard interface module from control end equipment, wherein:
The 2nd VGA interface module is connected with said display terminal, is used for vision signal is sent to said display terminal;
The second mouse-keyboard interface module is connected with said operating terminal, is used to receive the control signal that said operating terminal sends, and control signal is sent to the said second Wireless USB main control module;
The second Wireless USB RF receiving and transmission module is connected with the second Wireless USB main control module, is used to receive the usb signal that main control end equipment sends, and this usb signal is sent to the second Wireless USB main control module; And, be used for control signal is sent to main control end equipment;
The second Wireless USB main control module is connected with said the 2nd USB-VGA modular converter, is used for the usb signal that receives is decoded, and decoded usb signal is sent to the 2nd USB-VGA modular converter; And, be used for the control signal that the said second mouse-keyboard interface module is sent is encoded, and the control signal after will encoding is sent to the said second Wireless USB RF receiving and transmission module;
The 2nd USB-VGA modular converter is connected between the second Wireless USB main control module and said the 2nd VGA interface module, is used for converting the usb signal that receives to vision signal, and with this video signal transmission to said the 2nd VGA interface module.
9. system as claimed in claim 8 is characterized in that, saidly also comprises switch power source adapter, the second source control module that is connected with this switch power source adapter from control end equipment;
Switch power source adapter is used to provide the power supply that satisfies from control end equipment work;
The second source control module is used to said the 2nd VGA interface module, the 2nd USB-VGA modular converter, the second Wireless USB main control module, the second Wireless USB RF receiving and transmission module and the second mouse-keyboard interface module power supply is provided.
10. main control end equipment; Be connected with the main frame of desktop PC; The operating terminal of said desktop PC and display terminal be connected from control end equipment; It is characterized in that said main control end equipment comprises a VGA interface module, a VGA-USB modular converter, the first Wireless USB main control module, the first Wireless USB RF receiving and transmission module and the first mouse-keyboard interface module, wherein:
The one VGA interface module is connected with the VGA interface of said main frame, is used to receive the vision signal that said main frame sends;
The one VGA-USB modular converter; Be connected with a said VGA interface module; Be used for converting the vision signal that a said VGA interface module receives to digital signal, and this digital signal converted to be sent to the said first Wireless USB main control module after the usb signal;
The first Wireless USB main control module; Be connected between said first mouse-keyboard interface module and the said first Wireless USB RF receiving and transmission module; Be used for said usb signal is encoded, and the usb signal after will encoding is sent to the first Wireless USB RF receiving and transmission module; And, be used for the control signal that receives is decoded, and decoded control signal converted to be sent to the said first mouse-keyboard interface module after the general controls signal;
The first Wireless USB RF receiving and transmission module is used for the usb signal that the said first Wireless USB main control module sends is sent to said from control end equipment; And, be used to receive the control signal of sending, and this control signal is sent to the said first Wireless USB main control module from control end equipment;
The first mouse-keyboard interface module is connected with the mouse-keyboard interface of said main frame, is used for the general controls signal that a said USB main control module sends is sent to said main frame.
11. one kind from control end equipment; Be connected with display terminal with the operating terminal of desktop PC; The main frame of said desktop PC is connected with main control end equipment; It is characterized in that, saidly comprise the 2nd VGA interface module, the 2nd USB-VGA modular converter, the second Wireless USB main control module, the second Wireless USB RF receiving and transmission module and the second mouse-keyboard interface module from control end equipment, wherein:
The 2nd VGA interface module is connected with said display terminal, is used for vision signal is sent to said display terminal;
The second mouse-keyboard interface module is connected with said operating terminal, is used to receive the control signal that said operating terminal sends, and control signal is sent to the said second Wireless USB main control module;
The second Wireless USB RF receiving and transmission module is connected with the second Wireless USB main control module, is used to receive the usb signal that main control end equipment sends, and this usb signal is sent to the second Wireless USB main control module; And, be used for control signal is sent to main control end equipment;
The second Wireless USB main control module is connected with said the 2nd USB-VGA modular converter, is used for the usb signal that receives is decoded, and decoded usb signal is sent to the 2nd USB-VGA modular converter; And, be used for the control signal that the said second mouse-keyboard interface module is sent is encoded, and the control signal after will encoding is sent to the said second Wireless USB RF receiving and transmission module;
The 2nd USB-VGA modular converter is connected between the second Wireless USB main control module and said the 2nd VGA interface module, is used for converting the usb signal that receives to vision signal, and with this video signal transmission to said the 2nd VGA interface module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101113545A CN101794205B (en) | 2010-02-02 | 2010-02-02 | System and equipment for realizing wireless control of desktop personal computer (PC) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101113545A CN101794205B (en) | 2010-02-02 | 2010-02-02 | System and equipment for realizing wireless control of desktop personal computer (PC) |
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| CN101794205A CN101794205A (en) | 2010-08-04 |
| CN101794205B true CN101794205B (en) | 2012-05-30 |
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| CN102176307A (en) * | 2011-03-23 | 2011-09-07 | 冠捷显示科技（厦门）有限公司 | Novel display system |
| CN102968397A (en) * | 2012-11-13 | 2013-03-13 | 浪潮电子信息产业股份有限公司 | VGA (video graphics array) switching management method of blade server |
| CN105872650A (en) * | 2015-12-15 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Data processing device, display device and video system |
| CN105872592A (en) * | 2015-12-15 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Processing device, display device and multimedia system |
| CN105608047A (en) * | 2015-12-23 | 2016-05-25 | 联想(北京)有限公司 | Electronic device and control method |
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