CN101075181A - Switching device used for multiple computer system input and output interfaces - Google Patents
Switching device used for multiple computer system input and output interfaces Download PDFInfo
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- CN101075181A CN101075181A CN 200610143261 CN200610143261A CN101075181A CN 101075181 A CN101075181 A CN 101075181A CN 200610143261 CN200610143261 CN 200610143261 CN 200610143261 A CN200610143261 A CN 200610143261A CN 101075181 A CN101075181 A CN 101075181A
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Abstract
A switching device of input and output interfaces of computer systems includes a plurality of primary ports for electrically connecting transmission interfaces of the plurality of the computer systems, a plurality of secondary port for electrically connecting transmission interfaces of a plurality of input devices, a hub device coupled between the plurality of primary ports and the plurality of secondary ports, an audio decoding unit coupled to the hub device, for decoding audio signals, a control unit coupled to the hub device, for controlling the hub device, so as to couple a primary port of the plurality of primary ports to the plurality of secondary ports and the audio decoding unit, and an audio output port coupled to the audio decoding unit, for outputting decoded results of the audio decoding unit.
Description
Technical field
The present invention is meant a kind of switching device shifter in input that is used for a plurality of computer systems and output interface, refers to a kind of switching device shifter that reduces signal transmssion line and sound signal slot and promote the audio quality especially.
Background technology
In computer system, by KVM switch, the user can be switched at many intercomputers by a cover keyboard, display and mouse.Known KVM switch is commonly referred to as KVM, and (Mouse) switch represents that the user can once can only control one certainly by cover keyboard, display and all computing machines of mouse control for Keyboard, Video.In fact, KVM switch also can switch output interfaces such as sound, network, printer at many intercomputers now, and is not limited only to switch keyboard, display and mouse.Except saving the expense of a plurality of keyboards, mouse, display, loudspeaker etc., can also vacate bigger desk-top space by KVM switch.For instance, with the webserver or have the server farm (Server Farm) of many computing machines, normally manage all computing machines by a network manager.In this case, as long as the network manager is by KVM switch, just can one overlaps keyboard, mouse, display, loudspeaker etc. and inputs or outputs device, controls all computing machines.
Early stage (analog) KVM switch need pass through four bars transmission lines, and the slot of keyboard, mouse, display and loudspeaker is linked to KVM switch.In order to save signal transmssion line, known techniques provides with USB (universal serial bus) (Universal Serial Bus) circuit, cooperates the hub of USB (universal serial bus), saves keyboard and two required bars transmission lines of mouse originally.
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of a known KVM switch 10.KVM switch 10 includes a line concentrator 100, an analogue audio frequency switching device shifter 102 and an analog video switching device shifter 104.Line concentrator 100 by USB (universal serial bus) upper reaches (upstream) connecting interface UP_USB1～UP_USBn and computer system PC1～PCn to set up signal online, and dirty (downstream) connecting interface DP_USB1～DP_USBn by USB (universal serial bus) and a keyboard 106, a mouse 108 or other to adopt the device (as joystick, calculating punch, digital camera etc.) of USB (universal serial bus) to set up signal online.KVM switch 10 can be according to a control signal Vct, the a certain upper reaches connecting interface of line concentrator 100 is connected to all dirty connecting interface DP_USB1～DP_USBn, and exports the audio frequency and the video of the computer system of correspondence to loudspeaker 110 and screen 112 by analogue audio frequency switching device shifter 102 and analog video switching device shifter 104.For instance, when the user wants the PC1 of control computer system, KVM switch 10 can be connected to all dirty connecting interface DP_USB 1～DP_USBn with upper reaches connecting interface UP_USB1, and by analogue audio frequency switching device shifter 102 and analog video switching device shifter 104 with the audio frequency of computer system PC1 and vision signal conducting to loudspeaker 110 and screen 112.Thus, the user can pass through keyboard 106 and mouse 108 PC1 of control computer system, and can be play the multimedia output of computer system PC1 by loudspeaker 110 and screen 112.By that analogy, the user can control all computer system PC1～PCn by keyboard 106 and mouse 108, and plays the audio frequency of computer system PC1～PCn and the video data of demonstration computer system PC1～PCn by loudspeaker 110 and screen 112.
In other words, KVM switch 10 is connected to a computer system with the signal transmssion line of a USB (universal serial bus), to save keyboard and the required signal transmssion line of mouse.Simultaneously, because USB (universal serial bus) can connect 127 peripheral outfits at most, and support hot plug (Hot Attach ﹠amp; Detach) and plug and play (Plug-and-Play), therefore can connect all kinds of peripherals, as equipment such as floppy drive, CD-ROM drive, joystick, modulator-demodular unit, printer, magnetic tape station, scanner, phones with joint of universal serial bus specification.Yet, as shown in Figure 1, even the signal transmssion line with USB (universal serial bus) has replaced keyboard and two required bars transmission lines of mouse, but each computer system PC1～PCn still needs by audio signal transmission wire and video signal transmission wire, and output audio and vision signal are to analogue audio frequency switch 102 and analog video switch 104.In other words, each computer system PC1～PCn need pass through three bars transmission lines, and the slot of keyboard, mouse, display and loudspeaker is linked to KVM switch 10.When many computing machines, it is very complicated that circuit can become, and not only expends the wire rod cost, and make desktop messy.In addition, a plurality of sound signal slots to be set on the analogue audio frequency switching device shifter 102, the simulated audio signal of being exported with the PC1～PCn of receiving computer system.Because the sound signal slot can take very big area, causes the volume of KVM switch 10 to reduce.Moreover the transmission usefulness of simulated audio signal can be successively decreased along with the growth of transmission line, and the long more easy more interference of noise that is subjected to of transmission line, and the audio quality that makes loudspeaker 110 export reduces and distortion.
In brief, known KVM switch can't effectively reduce signal transmssion line, causes the wire rod cost to increase, and audio quality can fail along with the growth of transmission line, influences multimedia output.
Summary of the invention
Therefore, fundamental purpose of the present invention promptly is to provide a kind of input of a plurality of computer systems and switching device shifter of output interface of being used for.
The present invention discloses a kind of input of a plurality of computer systems and switching device shifter of output interface of being used for, and includes a plurality of main end connectors, is used for the data transmission interface of chimeric these a plurality of computer systems; A plurality of secondary end connectors are used for the data transmission interface of chimeric a plurality of input medias; One line concentrator is coupled between these a plurality of main end connectors and this a plurality of secondary end connectors; One audio decoding unit is coupled to this line concentrator, is used for decoded audio signal; One control module is coupled to this line concentrator, is used for controlling this line concentrator, should a plurality of masters holding the main end of one of connectors connector conducting to these a plurality of pairs to hold connectivity ports and this audio decoding units; And an audio output port, be coupled to this audio decoding unit, be used for exporting the decoded result of this audio decoding unit.
Description of drawings
Fig. 1 is the synoptic diagram of a known KVM switch.
Fig. 2 is the synoptic diagram of one embodiment of the invention switching device shifter.
Fig. 3 is the running synoptic diagram of the switching device shifter of Fig. 2.
Embodiment
Please refer to Fig. 2, Fig. 2 is the synoptic diagram of one embodiment of the invention switching device shifter 20.Switching device shifter 20 is used for the input and the output interface of a plurality of computer systems, and it includes main end connector MP1～MPn, secondary end connector SP1～SPn, a line concentrator 200, an audio decoding unit 202, a control module 204 and an audio output port 206.Main end connector MP1～MPn is used for the data transmission interface of chimeric computer system, and secondary end connectivity port SP1～SPn is used for the data transmission interface of chimeric a plurality of input medias.Line concentrator 200 is coupled to main end connector MP1～MPn and secondary end connector SP1～SPn, the signal that it can be exported according to control module 204, with the main end connector conducting of main end connector MP1～MPn to all secondary end connectivity port SP1～SPn and audio decoding unit 202.Audio decoding unit 202 can extract and decode simulated audio signal from the signal that line concentrator 200 is exported, with by audio output port 206 output audio signals, and played sound by loudspeaker 208.
In other words, control module 204 may command line concentrators 200, a certain master will hold the connector conducting to all secondary end connectivity port SP1～SPn and audio decoding unit 202 among end connector MP1～MPn leading.Thus, but secondary end connector SP1～SPn chimeric input media transmission signals hold the computer system that the connectivity port connected to this master, and audio decoding unit 202 can pass through audio output port 206 and loudspeaker 208, exports the voice data of this computer system.
Preferably, main end connector MP1～MPn and secondary end connector SP1～SPn all meet universal serial bus specification, and line concentrator 200 is one to meet the hub of universal serial bus specification.Because USB (universal serial bus) can connect 127 peripheral outfits at most, and support hot plug and plug and play, therefore secondary end connector SP1～SPn can connect all kinds of peripherals with joint of universal serial bus specification, as equipment such as floppy drive, CD-ROM drive, joystick, modulator-demodular unit, printer, magnetic tape station, scanner, phones.Further, the present invention can be in switching device shifter 20 an external or built-in connectivity port converting unit, be coupled to the secondary end connector of secondary end connector SP1～SPn, be used for holding connector to be converted to the connectivity port of a default specification pair.For instance, the connectivity port converting unit can be the converting unit of a USB (universal serial bus) connectivity port to the PS/2 joint, or the USB (universal serial bus) connectivity port is to the converting unit of joystick joint (15 Pin D-sub), and then the input media of distinct interface is still applicable to switching device shifter 20.In addition, except solving the sound signal by audio decoding unit 202, also can pass through an audio coding unit and an audio input port, the reception voice signal also is sent in the corresponding computer system.
Function mode about switching device shifter 20 please refer to Fig. 3.In Fig. 3, the chimeric respectively data transfer terminal PT_PC1～PT_PCn that computer system PC1～PCn is arranged of main end connector MP1～MPn of switching device shifter 20, data transfer terminal PT_PC1～PT_PCn all meets universal serial bus specification.In addition, secondary end connector SP1～SPn can chimeric different input media, as keyboard KB_USB, the mouse MS_USB of USB (universal serial bus), or keyboard KB_PS, mouse MS_PS by a connectivity port converting unit 300 chimeric PS/2 interfaces.Certainly, converting unit 300 extrapolatings in connectivity port are integrated in the line concentrator 200 in a secondary end connector SPm or with pair end connector SPm.In addition, an audio coding unit 302 and an audio input port 304 can be sent to the voice signal that a microphone 306 is received in the line concentrator 200.Wherein, audio coding unit 302 can be integrated in the same chip with audio decoding unit 202.
In wanting the PC1～PCn of control computer system during a certain computer system, the user can be by control signal receiving element (not being plotted among a Fig. 3) output order to control module 204, and then control module 204 can be coupled to secondary end connectivity port SP1～SPn, audio decoding unit 202 and audio coding unit 302 with the main end connector of correspondence.Thus, the user can pass through keyboard KB_USB, mouse MS_USB or keyboard KB_PS, mouse MS_PS control computer system, and can be by loudspeaker 208 signal that plays sound, and by microphone 306 input audio signals.Certainly, the user can input or output other chimeric secondary end connector SP1～SPn of going into of device (as joystick, printer etc.) in addition.
Therefore, as shown in Figure 3, each computer system PC1～PCn only need pass through a bars transmission line, can receive the signal of different input medias (as keyboard, mouse, joystick etc.), and exportable signal is to different output units (as loudspeaker, printer etc.).In other words, switching device shifter 20 of the present invention can effectively reduce signal transmssion line, reduces the wire rod cost.Therefore in addition, the analogue audio frequency switching device shifter need be set in the switching device shifter 20, can save and be used for the sound signal slot of received audio signal, make the volume of switching device shifter 20 further to reduce.The more important thing is that digital audio and video signals is a succession ofly to reach the position that " 1 " formed by " 0 ", can obtain intimate real audio by computings such as demodulation, decodings, the audio quality that makes loudspeaker 208 be exported is not subjected to the influence of length of transmission line.
In the KVM switch 10 of Fig. 1, each computing machine need pass through an audio signal transmission wire, and simulated audio signal is sent to analogue audio frequency switching device shifter 102.By contrast, in the present invention, switching device shifter 20 is by an audio decoding unit 202, make sound signal can be integrated in the signal of USB (universal serial bus), not only can reduce required signal transmssion line and sound signal slot, the more important thing is, audio quality is not subjected to the influence of length of transmission line.Certainly, as KVM switch 10, those of ordinary skills can increase by an analog video switching device shifter in addition in switching device shifter 20, the source that is used for switching analog video, and non-emphasis of the present invention is not given unnecessary details at this.
In sum, the present invention with minimizing signal transmssion line and sound signal slot, and promotes the audio quality by the audio decoding unit decoded audio signal.In other words, the present invention can effectively reduce wire rod and hardware cost, and promotes the multimedia effect, improves the shortcoming of known techniques.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to claims of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (11)
1. one kind is used for the input of a plurality of computer systems and the switching device shifter of output interface, includes:
A plurality of main end connectors are used for the data transmission interface of chimeric these a plurality of computer systems;
A plurality of secondary end connectors are used for the data transmission interface of chimeric a plurality of input medias;
One line concentrator is coupled between these a plurality of main end connectors and this a plurality of secondary end connectors;
One audio decoding unit is coupled to this line concentrator, is used for decoded audio signal;
One control module is coupled to this line concentrator, is used for controlling this line concentrator, to hold a main end connector conducting to these a plurality of pairs of connectors to hold connectivity ports and this audio decoding units these a plurality of masters; And
One audio output port is coupled to this audio decoding unit, is used for exporting the decoded result of this audio decoding unit.
2. switching device shifter as claimed in claim 1, wherein one of these a plurality of main end connectors main end connector is the connector of a USB (universal serial bus).
3. switching device shifter as claimed in claim 1, wherein one of these a plurality of secondary end connectors secondary end connector is the connector of a USB (universal serial bus).
4. switching device shifter as claimed in claim 1, it comprises a connectivity port converting unit in addition, is coupled to a secondary end connector of these a plurality of secondary end connectors, is used for this pair end connector is converted to a connectivity port of presetting specification.
5. switching device shifter as claimed in claim 4, the connectivity port that wherein should preset specification is the device that is used for plugging a PS/2 joint.
6. switching device shifter as claimed in claim 4, the connectivity port that wherein should preset specification
7. switching device shifter as claimed in claim 1, wherein these a plurality of input medias comprise a keyboard and a mouse.
8. switching device shifter as claimed in claim 1, it comprises in addition:
One audio input port is used for received audio signal; And
One audio coding unit is coupled to this audio input port and this line concentrator, and the signal encoding that is used for this audio input port is received is the grouping of default form, and is sent to this line concentrator.
9. switching device shifter as claimed in claim 8, wherein this control module is used for holding the connectivity port conducting to this audio coding unit one master of these a plurality of main end connectors in addition.
10. switching device shifter as claimed in claim 8, wherein this audio coding unit is integrated in this audio decoding unit.
11. switching device shifter as claimed in claim 1, it comprises a control signal receiving element in addition, is coupled to this control module, is used for receiving the control signal that a user is exported, and is sent to this control module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76753006P | 2006-05-19 | 2006-05-19 | |
| US60/767,530 | 2006-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101075181A true CN101075181A (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610143261 Pending CN101075181A (en) | 2006-05-19 | 2006-11-01 | Switching device used for multiple computer system input and output interfaces |
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| Country | Link |
|---|---|
| CN (1) | CN101075181A (en) |
| TW (1) | TW200743978A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859237B (en) * | 2009-04-07 | 2012-05-23 | 宏正自动科技股份有限公司 | Multicomputer switching system and audio transmitting method thereof |
| CN102591609A (en) * | 2010-11-01 | 2012-07-18 | 宏正自动科技股份有限公司 | Remote management device and remote management system |
| CN101996441B (en) * | 2009-08-09 | 2015-07-01 | 北京银融科技有限责任公司 | Password keyboard system and method for performing over-the-counter trading by using same |
| CN110806806A (en) * | 2018-07-20 | 2020-02-18 | 纬创资通股份有限公司 | Switching method and related electronic system |
-
2006
- 2006-10-24 TW TW095139111A patent/TW200743978A/en unknown
- 2006-11-01 CN CN 200610143261 patent/CN101075181A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859237B (en) * | 2009-04-07 | 2012-05-23 | 宏正自动科技股份有限公司 | Multicomputer switching system and audio transmitting method thereof |
| CN101996441B (en) * | 2009-08-09 | 2015-07-01 | 北京银融科技有限责任公司 | Password keyboard system and method for performing over-the-counter trading by using same |
| CN102591609A (en) * | 2010-11-01 | 2012-07-18 | 宏正自动科技股份有限公司 | Remote management device and remote management system |
| CN110806806A (en) * | 2018-07-20 | 2020-02-18 | 纬创资通股份有限公司 | Switching method and related electronic system |
| CN110806806B (en) * | 2018-07-20 | 2023-07-14 | 纬创资通股份有限公司 | Switching method and related electronic system |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200743978A (en) | 2007-12-01 |
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