CN1976310A - Communication method and system using bus interface over a network - Google Patents
Communication method and system using bus interface over a network Download PDFInfo
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- CN1976310A CN1976310A CN 200610100129 CN200610100129A CN1976310A CN 1976310 A CN1976310 A CN 1976310A CN 200610100129 CN200610100129 CN 200610100129 CN 200610100129 A CN200610100129 A CN 200610100129A CN 1976310 A CN1976310 A CN 1976310A
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Abstract
A method and system for universal serial bus (USB) re-direct (USB-R) over a network may comprise receiving at a local client device via a network, remote client device detection data corresponding to a remote client device that is plugged into a remote system. The local client device may request access to the remote client device that is plugged into the remote system by communicating device access data. The remote client device that is plugged into the remote system may be mapped as a USB device at the local client device. The local client device may receive information from the remote system via the network, confirming the requested access to the remote client device that is plugged into the remote system.
Description
Technical field
The present invention relates to the network interface field, more particularly, relate to a kind of USB (USB) of in network, realizing and be redirected the method and system of (USB-R).
Background technology
Exploitation obtains USB (USB) in nineteen ninety-five by an alliance of company at first.The main purpose of USB is the outside expansion bus of definition, thereby ancillary equipment can be connected on the personal computer (PC) simply as phone being connected to insertion metope jack.The ease for use of USB and low cost make it highly successful on market, and global most ancillary equipment provides the commercial city to come development according to its technical specification.
A task of systems soft ware is exactly to provide unified system view for all application software.Can adopt systems soft ware with hiding hard-wired details, thereby make the easier transplanting of application software portable.Systems soft ware can be managed the dynamic connection of ancillary equipment and remove.This stage is called enumerates (enumeration), comprising communicating by letter with ancillary equipment and then find that it should installed device drives, if the still uninstalled words of this driving then systems soft ware should be written into it.Each ancillary equipment all has been assigned with a unique address during enumerating, for use in the data passes of run duration.At run duration, host PC starts the processing to certain peripherals, and each ancillary equipment is accepted its processing separately and correspondingly made response.In addition, host PC software is integrated into ancillary equipment in system's energy conservation mechanism, need not user intervention and can manage all system's energy.
Hub can provide the energy of managing for USB ancillary equipment and the quilt that is connected ancillary equipment additional connectivity to be connected to additional ancillary equipment.Hub can be discerned the dynamic connection of ancillary equipment, and provides the equipment energy for peripheral operation.The hub that can be new connection distributes a unique address, and the hub of cascade at most can be up to for example five layers.At run duration, hub can be used as two action translator, also can be as required up cable to main frame transmit usb signal and at descending cable to the device forwards usb signal.
Can adopt USB ancillary equipment to ask to obtain the processing that host PC sends.Ancillary equipment can be made response to control and treatment, and for example, request obtains the details about equipment and configuration thereof.Ancillary equipment can utilize standard usb data form to main frame transmission data or from host receiving data.To/moving and the data interpretation of ancillary equipment from the normal data of PC main frame, the minor variations that adds the PC host software promptly can be USB and brings very big flexibility, can change the software of PC main frame hardly.The transmission rate of USB 1.1 ancillary equipment is 12Mb/s or 1.5Mb/s.
USB 2.0 standards are developed by USB 1.1 standards, and more high performance interface can be provided.The connector of USB1.1 and full speed cable need not the USB 2.0 that any change can be supported higher rate.More high transfer rate is by consult to decide between equipment and the equipment, if certain ancillary equipment is not supported higher rate, then the link transmission speed of equipment room by with this ancillary equipment decision be lower than 12Mb/s or 1.5Mb/s, be the transmission rate operation.External USB 2.0 hubs may have different signaling rates on its each port.USB 2.0 uses the 40x multiplier of USB 2.0, and for high speed USB 2.0 ancillary equipment that connected, USB 2.0 hub input rates are that 480Mb/s and output speed are 480Mb/s; And for USB 1.1 ancillary equipment that connected, USB 2.0 hub input and output speed are 12Mb/s or 1.5Mb/s.USB 2.0 hubs can be complementary the data rate that its downlink port is sent and the suitable data rate of connected device.The more high data rate of USB 2.0 might provide new ancillary equipment, and for example, the performance that can insert high bandwidth rear video conference camera more can be better.
Systems soft ware can obtain the what's new that (comprehend) comprises USB 2.0 ancillary equipment, can optimize its performance like this, detect the better configuration that sub-optimal configuration also recommends to connect this ancillary equipment, for example, described sub-optimal configuration is for example to be connected to comprising on USB 1.1 hubs USB 2.0 ancillary equipment to be connected on USB 1.1 hubs.USB 2.0 hubs can be used for receiving the high speed processing of higher frame rate, and they are transferred in high speed USB 2.0 ancillary equipment and USB 1.1 ancillary equipment with data.The interim buffer memory that the data rate function may need to increase the complexity of hub and be used to preserve interim buffer memory input high-speed data.Under situation that USB 2.0 ancillary equipment that have been connected are communicated by letter, hub is to transmitting high speed signal at suitable USB2.0 uplink and downlink cable.Can make USB 2.0 ancillary equipment can use most of bandwidth of USB 2.0 like this.
In order to communicate with USB 1.1 ancillary equipment, USB 2.0 hubs should comprise a kind of mechanism, and this mechanism support is used for the realization coupling with downstream plant properties data speed and downstream plant ability.This hub can be used for the conversion of managing data rate from the high data rate of console controller to the low speed data rate of USB 1.1 equipment.
USB device can be managed by local usb host controller and suitable host software, and then USB device is configured, operates, monitors and manages.But, can support some USB device in order to make the main frame that has limited local intelligent, when can local entity based on when remote location sends the local entity of signal, can on this remote location, carry out the USB processing.For example, in client/server was provided with, wherein client computer was the intelligent terminal that has limited local processing capacity, supported that ancillary equipment provides flexibility but can be, as USB 1.1 ancillary equipment such as keyboard, mouse and printers.
With reference to accompanying drawing and the present invention hereinafter described, by the comparison of the present invention and traditional solution, those skilled in the art can more clearly understand the restriction and the shortcoming of traditional solution.
Summary of the invention
A kind of USB (USB) of realizing in network is redirected the method and system of (USB-R), can be in conjunction with shown at least one width of cloth accompanying drawing or described proving absolutely, and can obtain more complete description in the claims.
According to an aspect of the present invention, provide a kind of method that communicates by bus interface in network, this method comprises:
On local client equipment, receive and the remote client devices respective remote client device detection data that are connected remote system by network;
Described local client device request visit is connected the described remote client devices of described remote system; And
The described remote client devices that is connected described remote system is mapped as USB device on the described local client equipment.
Preferably, this method further comprises and will output to the operating system that is arranged in described local client equipment with the corresponding described client device of the receiving remote detection data of the described remote client devices that is connected described remote system.
Preferably, this method further comprises the described remote client devices that is connected described remote system according to described output in described local client Equipment Inspection.
Preferably, this method comprises that further described local client device request visit is connected the described remote client devices of described remote system by the device access data are sent in the described remote system through described network.
Preferably, this method further comprises the device access data that are sent in the described remote system by described network is encoded.
Preferably, this method further is included in described local client equipment, will detect data with the corresponding described remote client devices of the described remote client devices that is connected described remote system and translate to corresponding USB device detection incident.
Preferably, this method comprises that further the described remote client devices that will be connected described remote system is expressed as the described USB device of described local client equipment.
Preferably, this method further is included in described local client equipment and receives information by described network from described remote system, confirms the described access request to the described remote client devices that is connected described remote system.
Preferably, described remote client devices is the remote USB client device.
Preferably, described remote client devices is long-range non-USB client device.
According to an aspect of the present invention, a kind of machine readable storage is provided, has wherein stored the computer program that comprises a code segment at least, this program can be transmitted in network by bus interface, described at least one code segment can be carried out by machine, and then makes machine finish following step:
On local client equipment, receive and the remote client devices respective remote client device detection data that are connected remote system by network;
Described local client device request visit is connected the described remote client devices of described remote system; And
The described remote client devices that is connected described remote system is mapped as USB device on the described local client equipment.
Preferably, this machine readable storage also comprises code, is used for outputing to the operating system that is positioned at described local client equipment with detecting data with the corresponding described client device of receiving remote of the described remote client devices that is connected described remote system.
Preferably, this machine readable storage also comprises code, is used for according to described output, is connected to the described remote client devices of described remote system in described local client Equipment Inspection.
Preferably, this machine readable storage also comprises code, is used for by the device access data are sent to described remote system through described network, and described local client device request visit is connected the described remote client devices of described remote system.
Preferably, this machine readable storage also comprises code, is used for the device access data that are sent to described remote system by described network are encoded.
Preferably, this machine readable storage also comprises code, be used at described local client equipment, will detect data with the corresponding described remote client devices of the described remote client devices that is connected described remote system and translate to corresponding USB device detection incident.
Preferably, this machine readable storage also comprises code, and the described remote client devices that is used for being connected described remote system is expressed as the described USB device of described local client equipment.
Preferably, this machine readable storage also comprises code, is used for receiving information by described network from described remote system at described local client equipment, confirms the described access request to the described remote client devices that is connected described remote system.
Preferably, described remote client devices is the remote USB client device.
Preferably, described remote client devices is long-range non-USB client device.
According to an aspect of the present invention, provide a kind of system that communicates by bus interface in network, this system comprises:
Be used on local client equipment, receiving the processor that detects data with the remote client devices respective remote client device that is connected remote system by network;
Described processor can make described local client device request visit be connected the described remote client devices of described remote system; And
Described processor can be mapped as the described remote client devices that is connected described remote system the USB device on the described local client equipment.
Preferably, described processor can output to the operating system that is arranged in described local client equipment with detecting data with the corresponding described client device of receiving remote of the described remote client devices that is connected described remote system.
Preferably, described processor can be connected to the described remote client devices of described remote system according to described output in described local client Equipment Inspection.
Preferably, described processor can be by being sent to the device access data in the described remote system through described network, and the request visit is connected the described remote client devices of described remote system.
Preferably, described processor is encoded to the device access data that are sent in the described remote system by described network
Preferably, described processor can will detect data with the corresponding described remote client devices of the described remote client devices that is connected described remote system and be converted to corresponding USB device detection incident at described local client equipment.
Preferably, described processor can be expressed as the described remote client devices that is connected described remote system the described USB device of described local client equipment.
Preferably, described processor can receive information by described network from described remote system at described local client equipment, confirms the described access request to the described remote client devices that is connected described remote system.
Preferably, described remote client devices is the remote USB client device.
Preferably, described remote client devices is long-range non-USB client device.
Preferably, the described processor that is positioned at local client equipment is a network interface controller.
Hereinafter with accompanying drawing in, will further specify the details of above-mentioned and other advantage, innovative point and specific embodiment of the present invention.
Description of drawings
Fig. 1 is the driver of the USB subsystem that can be used in combination with the embodiment of the invention and the block diagram of control unit interface;
Fig. 2 is the block diagram that is redirected connection according to the USB between local system and remote system of the embodiment of the invention;
Fig. 3 is the block diagram according to the exemplary architecture of the redirected client rs PC of the realization USB of the embodiment of the invention;
Fig. 4 is the block diagram of the single computer USB system that has USB 2.0 hubs that can be used in combination with the embodiment of the invention;
Fig. 5 a is according to the location of the embodiment of the invention and determines to be connected the exemplary steps flow chart of the USB device in the Terminal Server Client;
Fig. 5 b is according to the location of the embodiment of the invention and determines to be connected the exemplary steps flow chart of the non-USB device in the Terminal Server Client;
Fig. 6 is the exemplary steps flow chart of the equipment in the Terminal Server Client that is connected according to the visit of the embodiment of the invention.
Embodiment
A kind of method and system of USB (USB) redirected (USB-R) of realizing in network comprising: receive on local client equipment with the remote client devices respective remote client device that is connected remote system by network and detect data.By the transmission equipment visit data, this local client equipment can ask to visit the described remote client devices that is connected described remote system.The described remote client devices that is connected described remote system can be mapped as the USB device on the described local client equipment.Local client equipment receives information from remote system by network, and confirms the access request to the remote client devices that is connected remote system.
USB is redirected and need not the USB device physical connection in local system, although because physical device may be positioned at remote port, local system can utilize the USB device of any kind.Can shine upon the USB function by software, and simulate different equipment, for example, in local system, connected device looks like usb memory stick and memory contents can be mapped to file or the catalogue in the remote system.When being mapped to local system, the seeming as the user has just inserted new USB device of this equipment.When mapping finished, this equipment seemed as the user extracts USB device.The diversity and the alliance of remote system service become flexible and changeable, because mapping and USB function are redirected in local area network (LAN) finish.
Fig. 1 is the driver of the USB subsystem that can be used in combination with the embodiment of the invention and the block diagram of control unit interface.As shown in Figure 1, comprising client driver 102, usb driver (USBD) 104, Host Controller Driver device (HCD) 106, main controller hardware module 108 and USB device module 110.
Client driver 102 can comprise suitable logic, circuit and/or code, can be used for by the additional USB device of USBD 104 management.USBD 104 can comprise suitable logic and/or code, can be used for realizing the exchanges data between main frame and the additional USB ancillary equipment.Additional peripheral devices can be by sharing the USB bandwidth by the agreement based on token of host schedules.HCD 106 can be used for for main controller 108 resource allocations and remove to distribute abstract (abstraction) is provided, thereby provides guaranteed service for USB device 110.HCD 106 can be provided for carrying out required abstract software interface.HCD 106 may be arranged in the lowermost layer of software stack, and has a client, i.e. USB driver (USBD).
USBD can be mapped to the request from a plurality of clients suitable HCD, and HCD can manage a plurality of main controllers conversely.Main controller 108 can comprise suitable logic, circuit and/or code, is used to the input and output of main system storage that high speed bus interface is provided.When metadata cache need be filled or empty, main controller 108 will be notified the USB system.USB device module 110 can comprise a plurality of USB device, as flash memory device, network camera, digital camera, modulator-demodulator, printer, scanner, mouse, keyboard or phone.
When USB device 110 was gone up in connection, hub detected this variation, and hub driver is from this hub reception notification.Hub driver utilizes information that hub provides from USBD requesting service identifier.USBD is conversely to hub driver Returning equipment identifier.For each USB device 110, before equipment can use, may require multinomial configuration.Equipment disposition comprises the USB parameter of the equipment of setting and the usb host resource of dividing the pairing equipment visibility.Configuration software with fetch equipment descriptor and request to the description of each possible configuration.This information can be used for being written into particular clients, and as device driver, and device driver is initial and the equipment reciprocation also is the choice of equipment configuration.Equipment disposition can be provided with the end points on the equipment and return the set of interfaces that can be used for transfer of data by the USBD client.Initial configuration can be used the default setting of interface and the default bandwidth of each end points.When selecting initial configuration, USBD equipment also can allow the client specified interface.The USB system can verify and support that the required resource of end points is whether available and correspondingly distribute required bandwidth.
Fig. 2 is the block diagram that is redirected connection according to the USB between local system and remote system of the embodiment of the invention.As shown in Figure 2, comprising client rs PC 204, long-range PC 206 and the ethernet link 208 that connects client rs PC 204 and long-range PC 206.Long-range PC 206 comprises supervisor console 210 and resource module 212.
Client rs PC 204 can comprise suitable logic, circuit and/or code, is used to ask information or application from server.Client rs PC 204 can comprise firmware and/or other code, and the USB device that is used for will being connected to by communication protocol long-range PC 206 is mapped to client rs PC 204, and this communication protocol can be the Ethernet protocol that uses of ethernet link 208 for example.Supervisor console 210 can comprise USB redirection of virtualization and mapping software, and then is mapped to client rs PC 204 by the USB device that the communication protocol such as ethernet link 208 etc. will be connected to long-range PC 206.Resource module 212 can comprise actual USB device and/or software mapping simulation resource, and the simulation resource can be mapped to client rs PC 204 by the communication protocol such as ethernet link 208 grades.
Remote USB-R virtual and mapping software or other code can provide the termination and the transmission and receive virtual USB-R order and data in network of establishment, the device map of device map.Remote USB-R is virtual can to provide USB device virtual with mapping software or other code equally, is used for USB order and data from USB-R are translated to the equipment or the data of being shone upon.In one embodiment of the invention, because the interdependency between USB-R hardware, USB-R firmware or other code and network interface controller (NIC), these parts can be integrated into single chip, thereby reduce cost and better integrated solution is provided.The system of integration USB-R equipment is installed,, various additional USB device can be arranged according to the mapping that takes place in the USB-R virtualization software.
Fig. 3 is the block diagram according to the exemplary architecture of the redirected client of the realization USB of the embodiment of the invention.As shown in Figure 3, be redirected subsystem 302 and ethernet link 316 comprising client rs PC 304, memory module 306, USB.USB is redirected subsystem 302 can comprise register 310, peripheral component interconnect (pci) bridge 312 and processor, and processor can be counted as network interface controller (NIC) 314.
Client rs PC 304 can comprise suitable logic, circuit and/or code, is used to ask information or application from server.Client rs PC 304 can be mapped to client rs PC 304 by the USB device that will be connected to long-range PC such as communication protocols such as ethernet links 316.Client rs PC 304 can be stored data, and by the canned data in pci bus or the local bus visit memory module 306.USB is redirected subsystem 302 can comprise USB redirection of virtualization and mapping software, thereby is mapped to client rs PC 304 by the USB device that the communication protocol such as ethernet link 316 grades will be connected to long-range PC.In one embodiment of the invention, because the interdependency that USB-R hardware, USB-R firmware or other code and network interface controller (NIC) are 314, these parts can be integrated into single chip, thereby reduce cost and better integrated solution is provided.Register 310 can comprise suitable logic, circuit and/or code, is used to manage and/or translate by the USB device that is connected to long-range PC receive the data that obtain by ethernet link 316.PCI bridge 312 can comprise suitable logic, circuit and/or code, and the data that are used for obtaining from the USB device reception that is connected to long-range PC extend out bus by PCI or PCI and are connected to client rs PC 304 and storage 306.NIC 314 can comprise suitable logic, circuit and/or code, can receive data from the USB device that is connected to long-range PC.By receiving data from sending work station, NIC 314 can be a plurality of network building-out equipment service is provided, and as work station and printer etc., is the particular data packet format with this digital coding, as ethernet packet format, and the data that will receive are sent to register 310 and PCI bridge 312.The firmware that USB is redirected (USB-R) subsystem 302 can be embedded in the USB-R hardware, and can monitor USB-R hardware capability and network traffics, carries out USB to the conversion between the ethernet traffic at USB-R hardware and 314 of NIC simultaneously.
Firmware and NIC 314 that USB is redirected subsystem 302 can translate the packet that receives from long-range PC by ethernet link 316.If the data accepted bag is USB 1.1 packets, then send it to open master interface (OHCI), and if the data accepted bag is high speed USB 2.0 packets, then send it to the expansion master interface (EHCI).At long-range PC end, can in software, simulate OHCI and EHCI function, this software can be used for receiving the device access information of the company's of controlling oneself USB device, and the data that receive is sent to the NIC 314 of local client by ethernet link 316.
USB is redirected subsystem 302 and can be used for operating part USB main controller function, for client rs PC 304 and operating system (OS), is equivalent to the main controller based on PCI.Can keep main control register and memory interface structure, need not any great change.Except the data serial on the USB, these data can send in LAN or receive with coding form by ethernet link 316, thereby can not influence usb bus regularly.In an exemplary embodiments of the present invention, data transmission fault can be solved by OS or other timeouts of BIOS level.In one embodiment of the invention, according to its energy consumption demand, the USB device number that is connected to long-range PC without limits because be connected to the virtual unit that the equipment of remote system can be mapped as the native client end system.
Fig. 4 is the block diagram of the single computer USB system that has USB 2.0 hubs that can be used in combination with the embodiment of the invention.As shown in Figure 4, comprising server 401, USB 2.0 hubs 411 and USB 1.1 equipment 412.Server 401 comprises suitable logic, circuit and/or code, can be used for handling the various requests from client computer, for example, print, or the access control of voice mail, Email and fax services etc.Server 401 also can be used for handling mass data.USB 2.0 hubs 411 comprise suitable logic, circuit and/or code, can be used for increasing the USB port number on the personal computer (PC).USB 1.1 EM equipment module 412 can be flash memory device, network camera, digital camera, modulator-demodulator, printer, scanner, mouse, keyboard or phone.
USB system 400 can be used for several USB device 412 are connected in the main controller on the server 401 by a series of USB 2.0 hubs 411.USB device has relevant pipeline or logic channel with hub, and described pipeline or logic channel are connected to the logic entity on the equipment that is called end points from the main controller on the server 401.
Each end points can promptly be input to the output of equipment or slave unit, so each pipeline is unidirectional by direction transmission data.All USB device have two such pipeline/end points at least, promptly are used for the end points 0 of the equipment on the control bus.All have on each equipment and be numbered 0 input and output pipeline.According to transport-type, these pipelines can be divided into four kinds of different types, i.e. control transmission, synchronous transmission, interruption transmission and bulk transfer.Control transmission can be used at the short and small of equipment and simple order, and from the condition responsive of bus control pipeline numbering 0.Can use synchronous transmission, have given pace to guarantee but the possibility obliterated data, as real-time voice or video.Interrupt transmitting the equipment that can be used for reliable response fast of needs or limited delay, for example, pointing device and keyboard.Bulk transfer can be used for a large amount of fragmentary transmission, can use all residual available bandwidth, but can not guarantee bandwidth or delay, for example, and file transfer.
When USB 1.1 equipment 412 were connected to main controller on the server 401 by the hub on the bus 411, main controller was given the 7 unique bit addresses on this devices allocation bus.Then main controller registration (poll) bus data flow is normally finished with polling mode, if like this less than from the explicitly calling for of main controller, all devices all can't transmit any data on bus.
The USB device 412 that is connected to bus has a device descriptor, and a descriptor has one or more configuration descriptors.Each disposes descriptor one or more interface descriptor again, is used to some characteristic of the equipment of describing, so it can be used for various objectives, and for example, camera can have video and audio interface.These interface descriptor have the interface setting of an acquiescence again and have the setting of more replacement interfaces, and these interface settings have endpoint descriptor again.End points can and be replaced between the interface setting and reuse at a plurality of interfaces.
If high-speed equipment is connected in the full speed hub, then its data rate will be reduced at full speed.High-speed hubs have and are called the specific function of handling transfer interpreter, full speed flow bus and low speed bus flow can be isolated from the high speed flow.Processing transfer interpreter in the High-speed hubs can play the complete independent function of bus at full speed as full speed that has connected and low-speed device.
Fig. 5 a is according to the location of the embodiment of the invention and determines to be connected the exemplary steps flow chart of the USB device in the Terminal Server Client.Shown in Fig. 5 a, this typical flow is from step 502.In step 504, long-range PC USB re-positioning device driver is installed among the long-range PC.In step 506, USB device is inserted among the long-range PC.In step 508, the operating system of long-range PC detects the USB device of up-to-date insertion.In an embodiment of the present invention, the device driver of long-range PC detects the USB device of up-to-date insertion, and it is reported to the operating system of long-range PC.In step 510, the operating system among the long-range PC is registered and is enumerated the USB device of new insertion.For example, for the USB device of a plurality of new insertions, each among them is all registered separately and is enumerated, thereby can be detected by client rs PC.In step 512, the USB of long-range PC is redirected the USB device that subsystem must be looked for novelty and be inserted.In step 514, the Equipment Inspection information of the USB device that will newly insert by for example ethernet link is sent in the goal systems.In step 516, goal systems receives the Ethernet data bag that comprises Equipment Inspection information from long-range PC.In step 518, the Equipment Inspection information of the USB device that the redirected firmware of the USB of goal systems will newly insert outputs in the operating system of goal systems.In step 520, the operating system of goal systems detects the USB device of new insertion and is written into particular device and drives.In step 522, the appliance applications of goal systems can communicate with the USB device of new insertion among the long-range PC.This control flow finishes in step 524 at last.
Fig. 5 b is according to the location of the embodiment of the invention and determines to be connected the exemplary steps flow chart of the non-USB device in the Terminal Server Client.Shown in Fig. 5 b, this flow process starts from step 552.In step 554, long-range PC device driver is installed among the long-range PC.In step 556, non-USB device is inserted on the long-range PC, as is used to improve serial advanced technology attachment feeder apparatus (SATA), Redundant Array of Independent Disks, small computer system interface (SCSI) equipment, IEEE1394 live wire compatible equipment, PCI equipment, the PCI Express equipment of network attached storage (NAS) performance.In step 558, the operating system of long-range PC detects the non-USB device of new insertion.In an embodiment of the present invention, the device driver of long-range PC detects the non-USB device of up-to-date insertion, and it is reported to the operating system of long-range PC.In step 560, the operating system of long-range PC is registered and is enumerated the non-USB device of new insertion.For example, for the non-USB device of a plurality of new insertions, each equipment all should be registered separately and be enumerated, thereby client rs PC can be detected it.In step 562, the USB of long-range PC is redirected subsystem can require (claim) new non-USB device of inserting.In step 564, the Equipment Inspection information of the non-USB device newly inserted is sent in the goal systems by ethernet link.In step 566, goal systems receives the Ethernet data bag that comprises Equipment Inspection information from long-range PC.In step 568, the Equipment Inspection information of the non-USB device that the redirected firmware of the USB of goal systems will newly insert outputs in the operating system of goal systems.In step 570, the operating system of goal systems detects the non-USB device of new insertion and is written into particular device and drives.The non-USB device of the new insertion on the long-range PC can be mapped to client rs PC, and can be shown as the USB device on the client rs PC.In step 572, the appliance applications of goal systems can communicate with the non-USB device of new insertion among the long-range PC.This control flow finishes in step 574 at last.
Fig. 6 is the exemplary steps flow chart of the equipment in the Terminal Server Client that is connected according to the visit of the embodiment of the invention.As shown in Figure 6, this typical process starts from step 602.In step 604, goal systems attempts to visit the USB device of the new insertion that is positioned at long-range PC, for example, carries out read and/or write.In step 606, the USB of goal systems is redirected subsystem and sends on the long-range PC to the request coding and with it, is positioned at the USB device of the new insertion of long-range PC with visit.In step 608, the USB of long-range PC is redirected the subsystem driver and receives the Ethernet data bag that comprises device access information from goal systems.In step 610, the device driver of the USB device of the new insertion on redirected subsystem driver of the USB of long-range PC and the long-range PC is mutual.In step 612, redirected subsystem of the USB of long-range PC and Host Controller Driver device (HCD) can be finished the visit to the USB device of the new insertion on the long-range PC.In step 614, the USB of long-range PC is redirected the subsystem driver will be finished packet and be sent to goal systems, the finishing of devices illustrated dial-tone stage.This control flow finishes in step 616 at last.
Another embodiment of the present invention can provide a kind of machine readable storage, wherein stored computer program, this program comprises the code segment that at least one machine can move, thereby makes machine carry out the step that described USB (USB) is redirected (USB-R) at Local Area Network.
In an embodiment of the present invention, USB is redirected subsystem by the Fast Ethernet link between client and remote system, and the visit of the transparent equipment from FTP client FTP to the various resources that are attached to remote system can be provided.At FTP client FTP, the form that these remote resources can USB device is presented in the client operating system software.In this, can provide the USB device of newtype, in local system, be shown as local USB device, but this USB function may be arranged in the remote system on the network.
The physical device type as keyboard, mouse, storage or other USB device, can pass through mapping software dynamic-configuration, and new USB device can be presented in the local system.Other local USB device of the operation and all of USB re-positioning device is the same, but local system alternately may be by network redirection in the remote system of being shone upon.When the USB-R mapping process finishes, for local system, the demonstration of new USB device is equivalent under the USB Root Hub the same, wherein can use the additional host software equipment to drive, so that USB device can be operated.The operation that host software is carried out can be caught and translate to the USB-R firmware, it is encapsulated as the form of network packet and is sent to the remote system that has the USB-R virtualization software by network.The USB-R virtualization software comprises user interface, allows user's select target NIC, and which kind of USB device type the USB-R and the decision that local resource are mapped to remote system are shown as in goal systems.In addition, USB-R virtualization software convertible order and data from target USB-R equipment, and will order and data virtual be the resource of being shone upon.
The method and system that communicates by bus interface in network can comprise processor, as network interface controller (NIC) 314, this network interface controller can pass through network, Ethernet as ethernet link 316 uses, receive with remote client devices respective remote client device at local client equipment and to detect data, remote client devices comprises and being inserted in such as actual USB on the remote system of long-range PC 206 and non-USB device.NIC 314 can ask to visit the remote client devices that is connected on the long-range PC 206.NIC 314 can be mapped as USB device such as the local client equipment of client rs PC 204 with being connected to remote client devices on the long-range PC 206.
NIC 314 can output to the operating system that is arranged in local client PC 304 with the remote client devices respective remote client device detection data with being connected long-range PC 206 that received.According to the output of receiving remote client device detection data, NIC 314 can be in the local client Equipment Inspection to the remote client devices that is connected long-range PC 206.By the device access data are sent to long-range PC 206 by the network such as ethernet link 316, NIC 314 can ask to visit the remote client devices that is connected long-range PC 206.NIC 314 can arrive long-range PC 206 with the device access digital coding that has transmitted by the network such as ethernet link 316.At local client PC 304, NIC 314 can translate to corresponding USB device detection incident with detecting data with the remote client devices respective remote client device that is connected long-range PC 206.NIC 314 can be expressed as the remote client devices that is connected long-range PC 206 USB device of local client PC 304.In local client PC 304, NIC 314 can by such as the network of ethernet link 316 from long-range PC 206 reception information to confirm access request to the remote client devices that is connected long-range PC206.Remote client devices can be the remote USB client device.Remote client devices also can be long-range non-USB client device, as is used to improve serial advanced technology attachment feeder apparatus (SATA), Redundant Array of Independent Disks, small computer system interface (SCSI) equipment, IEEE 1394 live wire compatible equipments, PCI equipment, the PCIExpress equipment of network attached storage (NAS) performance.
Therefore, the present invention can realize by hardware, software or soft, combination of hardware.The present invention can realize with centralized system at least one computer system, perhaps be realized with dispersing mode by the different piece in the computer system that is distributed in several interconnection.Anyly can realize that the computer system of described method or miscellaneous equipment all are applicatory.The combination of software and hardware commonly used can be the general-purpose computing system that computer program is installed, and by installing and carry out described program-con-trolled computer system, it is moved by described method.
The present invention can also implement by computer program, and described program comprises whole features that can realize the inventive method, when it is installed in the computer system, by operation, can realize method of the present invention.Computer program in the presents refers to: one group of any expression formula of instructing that can adopt any program language, code or symbol to write, this instruction group makes system have information processing capability, with direct realization specific function, or after carrying out following one or two step, a) convert other Languages, coding or symbol to; B) reproduce with different forms, realize specific function.
Though the present invention describes by several specific embodiments, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, at particular condition or concrete condition, can make various modifications to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (10)
1, a kind of method that communicates by bus interface in network is characterized in that, described method comprises:
On local client equipment, receive and the remote client devices respective remote client device detection data that are connected remote system by network;
Described local client device request visit is connected the described remote client devices of described remote system; And
The described remote client devices that is connected described remote system is mapped as USB device on the described local client equipment.
2, method according to claim 1, it is characterized in that, further comprise outputing to the operating system that is arranged in described local client equipment detecting data with the corresponding described client device of receiving remote of the described remote client devices that is connected described remote system.
3, method according to claim 2 is characterized in that, further comprises the described remote client devices that is connected described remote system according to described output in described local client Equipment Inspection.
4, method according to claim 1, it is characterized in that, comprise that further described local client device request visit is connected the described remote client devices of described remote system by the device access data are sent in the described remote system through described network.
5, a kind of machine readable storage, it is characterized in that wherein stored the computer program that comprises a code segment at least, this program can be transmitted by bus interface in network, described at least one code segment can be carried out by machine, and then makes machine finish following step:
On local client equipment, receive and the remote client devices respective remote client device detection data that are connected remote system by network;
Described local client device request visit is connected the described remote client devices of described remote system; And
The described remote client devices that is connected described remote system is mapped as USB device on the described local client equipment.
6, machine readable storage according to claim 5, it is characterized in that, also comprise code, be used for outputing to the operating system that is positioned at described local client equipment detecting data with the corresponding described client device of receiving remote of the described remote client devices that is connected described remote system.
7, a kind of system that communicates by bus interface in network is characterized in that, described system comprises:
Be used on local client equipment, receiving the processor that detects data with the remote client devices respective remote client device that is connected remote system by network;
Described processor can make described local client device request visit be connected the described remote client devices of described remote system; And
Described processor can be mapped as the described remote client devices that is connected described remote system the USB device on the described local client equipment.
8, system according to claim 7, it is characterized in that described processor can output to the operating system that is arranged in described local client equipment with detecting data with the corresponding described client device of receiving remote of the described remote client devices that is connected described remote system.
9, system according to claim 8 is characterized in that, described processor can be connected to the described remote client devices of described remote system according to described output in described local client Equipment Inspection.
10, system according to claim 7 is characterized in that, described processor can be by being sent to the device access data in the described remote system through described network, and the request visit is connected the described remote client devices of described remote system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69763405P | 2005-07-08 | 2005-07-08 | |
| US60/697,634 | 2005-07-08 |
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| Publication Number | Publication Date |
|---|---|
| CN1976310A true CN1976310A (en) | 2007-06-06 |
| CN1976310B CN1976310B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200610100129.5A Expired - Fee Related CN1976310B (en) | 2005-07-08 | 2006-06-28 | Communication method using bus interface over a network |
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| CN (1) | CN1976310B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648454A (en) * | 2009-11-19 | 2012-08-22 | 高通股份有限公司 | Virtual peripheral hub device and system |
| CN103873537A (en) * | 2012-12-18 | 2014-06-18 | 无锡中科物联网基础软件研发中心有限公司 | Remote sharing method and system for USB (Universal Serial Bus) device |
| CN102216919B (en) * | 2008-08-15 | 2014-12-10 | 伊克隆技术公司 | Method and apparatus for connecting USB devices to a remote computer |
| US9035568B2 (en) | 2011-12-05 | 2015-05-19 | Qualcomm Incorporated | Telehealth wireless communication hub device and service platform system |
| US10230783B2 (en) | 2011-01-14 | 2019-03-12 | Qualcomm Incorporated | Telehealth wireless communication hub device and service platform system |
| CN113609050A (en) * | 2015-04-28 | 2021-11-05 | 密克罗奇普技术公司 | Universal serial bus intelligent concentrator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2341954A (en) * | 1998-09-28 | 2000-03-29 | Netcore Inc | Sharing an image processing device via a local area network |
| JP3437933B2 (en) * | 1999-01-21 | 2003-08-18 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Browser sharing method and system |
| JP2003256351A (en) * | 2002-03-04 | 2003-09-12 | Yamaha Corp | Usb hub |
-
2006
- 2006-06-28 CN CN200610100129.5A patent/CN1976310B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102216919B (en) * | 2008-08-15 | 2014-12-10 | 伊克隆技术公司 | Method and apparatus for connecting USB devices to a remote computer |
| CN102648454A (en) * | 2009-11-19 | 2012-08-22 | 高通股份有限公司 | Virtual peripheral hub device and system |
| US8937930B2 (en) | 2009-11-19 | 2015-01-20 | Qualcomm, Incorporated | Virtual peripheral hub device and system |
| CN102648454B (en) * | 2009-11-19 | 2015-08-12 | 高通股份有限公司 | Virtual peripheral hub device and system |
| US10230783B2 (en) | 2011-01-14 | 2019-03-12 | Qualcomm Incorporated | Telehealth wireless communication hub device and service platform system |
| US9035568B2 (en) | 2011-12-05 | 2015-05-19 | Qualcomm Incorporated | Telehealth wireless communication hub device and service platform system |
| CN103873537A (en) * | 2012-12-18 | 2014-06-18 | 无锡中科物联网基础软件研发中心有限公司 | Remote sharing method and system for USB (Universal Serial Bus) device |
| CN113609050A (en) * | 2015-04-28 | 2021-11-05 | 密克罗奇普技术公司 | Universal serial bus intelligent concentrator |
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| Publication number | Publication date |
|---|---|
| CN1976310B (en) | 2014-04-16 |
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