CN2335192Y - Computer hard disc switcher - Google Patents
Computer hard disc switcher Download PDFInfo
- Publication number
- CN2335192Y CN2335192Y CN 98201529 CN98201529U CN2335192Y CN 2335192 Y CN2335192 Y CN 2335192Y CN 98201529 CN98201529 CN 98201529 CN 98201529 U CN98201529 U CN 98201529U CN 2335192 Y CN2335192 Y CN 2335192Y
- Authority
- CN
- China
- Prior art keywords
- switching circuit
- hard
- output
- hard disc
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Small-Scale Networks (AREA)
Abstract
The utility model relates to a hard disc switcher of a computer, which is composed of a switching control circuit, an input switching circuit, an output switching circuit and a signal distributing circuit. When the utility model is used, a computer interface of the switcher is connected with a computer, an optical drive interface is connected with an optical drive, a first hard disc interface is connected with a first hard disc, a second hard disc interface is connected with a second hard disc, and the signal distributing circuit sends out an output signal of the optical drive to the hard disc interfaces. The user switches on or switches off a control switch according to the requirement when in use, the switching control circuit generates a control level to control the output switching circuit and the input switching circuit, and the computer is connected with a selected hard disc.
Description
The utility model relates to the hard disk switch, belongs to computer annex.
After you had a computing machine, maximum wish may should allow this calculating function turn round safely and reliably exactly, finishes your operate as normal, and Various types of data is not lost or destroyed, and guaranteed that your the long fruit of labour can not be destroyed overnight owing to unexpected.But you want again to play games on this loom simultaneously, operation possibility problematic software, operation may have the software of virus or move some have virus but can not operate as normal after the virus killing have to operation with virus software, just you think the relieved all kinds of softwares that move audaciously again outside work.
A kind of changeable type hard disk is arranged in the market, have above function, but this technology there is following shortcoming: (1) mechanical plug formula structure, the life-span is limited; (2) the product physical construction and the connector of each manufacturer production are inequality, can not be compatible; (3) computing machine is in operation and also disk can be extracted out, can cause data contamination.
It is long that goal of the invention of the present utility model provides a kind of life-span, and compatible hard disc of computer switch can link to each other same computing machine with two hard disks by the state that changes change-over switch.
The purpose of this utility model is to realize like this, it is the device that switches hard disk according to user's needs, the cable that former computing machine is linked to each other with hard disk disconnects, this device is placed between the two, the computer interface of this device is linked to each other with computing machine, CD-ROM driver interface links to each other with CD-ROM drive, and first hard-disk interface links to each other with first hard disk, and second hard-disk interface links to each other with second hard disk.Device is made up of input-switching circuit, output switching circuit, signal distribution circuit, control switching circuit.Control switching circuit is made up of change-over switch and resistance, and the user changes the state of change-over switch as required, makes control switching circuit export a control signal, and this signal is used to determine the presently used hard disk of computing machine.Input-switching circuit is made up of two 74LS245, and input-switching circuit is exported input signal according to control signal to selected hard disk.Output switching circuit by three GAL16V8,7407 and resistance form, output switching circuit is exported the output signal of selected hard disk according to control signal to computing machine.Signal distribution circuit is made up of 7407 two doors and resistance, 39 pin of its input termination CD-ROM drive or subordinate hard-disk interface, output connects 39 pin of first hard-disk interface and 39 pin of second hard disk respectively, and its effect is that the signal of 39 pin of CD-ROM drive or subordinate hard-disk interface is delivered on 39 pin of selected hard-disk interface by signal allocation.
The utility model compared with prior art has following advantage:
1. cost is low; 2. easy to use; 3. the life-span is long
Can with various computing machine compatibilities; 5. various external softwares of reception that can be relieved.
The utility model accompanying drawings is as follows:
Fig. 1 is the electrical schematic diagram of the utility model hard disk switch.
P1 is the computer-side interface, and P2 is first hard-disk interface, and P3 is second hard-disk interface, and P8 is CD-ROM drive or subordinate hard-disk interface, and U4, U5, U6, U2, R2 are output switching circuit.
The incoming line of output switching circuit links to each other with P2, P3, P8 respectively, and the output line of output switching circuit links to each other with P1, and input-switching circuit is made up of U, U1, and the incoming line of input-switching circuit links to each other with P1, and output line links to each other with P2, P3 respectively.
Signal distribution circuit is made up of U3:B, U3:C and R7, and the input of signal allocation links to each other with P8, and output links to each other with P2, P3.
Control switching circuit is made up of a resistance among change-over switch P10 and the R2, make control circuit produce a switch level signal by the on off state that changes change-over switch, the output of control switching circuit links to each other with output switching circuit and input-switching circuit, is used for controlling the flow direction of input/output signal.
Use of the present utility model is as follows:
The user closes as required or disconnects P10, then the control switching circuit that is made of the resistance among P10 and the R2 is exported a control level, this control level is input to U4, U5, U6, U1 and the phase inverter in U4 and delivers to U after anti-phase, according to the state of control level, with the logical relation of decision input/output signal.
U4 is the part of output switching circuit, and its logical relation is as follows:
DMARQO=DMARQ3+DMARQ1&KZ+！KZ&DMARQ2
IORDYO=IORDY1&IORDY3&KZ+IORDY2&IORDY3&！KZ
KZF=！KZ
U5 is the part of output switching circuit, and its logical relation is as follows:
IOCS160=IOCS161&IOCS163&KZ+IOCS162&IOCS163&！KZ
U6 is the part of output switching circuit, and its logical relation is as follows:
DASPO=DASP1&KZ+DASP2&！KZ
U is an input-switching circuit, and when KZ was high level, KZF was a low level, is in effective status, and input signal outputs to output terminal by U.Otherwise, being in disarmed state, output terminal is a high-impedance state.
U1 is an input-switching circuit, when KZ is low level, is in effective status, and input signal outputs to output terminal by U1, otherwise is in disarmed state, and output terminal is a high-impedance state.
That is to say when the KZ signal is high level, the input signal of P1 mouth will be delivered on the P2 mouth, and the signal of P1 mouth can not delivered on the P3 mouth, and the output signal of the output signal of P2 mouth and P8 mouth determines the output signal on the P1 mouth jointly, and the output signal of P3 mouth and P1 mouth are irrelevant.When the KZ signal is low level, the input signal of P1 mouth will be delivered on the P3 mouth, and the signal of P1 mouth can not delivered on the P2 mouth, and the output signal of the output signal of P3 mouth and P8 mouth determines the output signal of P1 mouth jointly, and the output signal of P2 mouth and P1 mouth are irrelevant.
U3:B, U3:C and R7 form signal distribution circuit, the DASP3 signal of P8 has been delivered to P2 mouth and P3 mouth respectively after distributing through distributor circuit, be used for satisfying P2 mouth and P3 mouth to the needs of output signal, just the DASP3 signal of P8 delivered to respectively on P2 mouth and the P3 mouth through U3:B and U3:C.
Claims (1)
1. a hard disc of computer switch is made up of control switching circuit, input-switching circuit, output switching circuit, signal distribution circuit, it is characterized in that described control switching circuit is by change-over switch (P
10) and resistance (R
2) in resistance form, input-switching circuit is by two 74LS245 (U, U
1) form, output switching circuit is by three GAL16V8 (U
4, U
5, U
6), 7407 (U
2) and resistance (R
2) form, signal distribution circuit is by 7407 (U
3: B, U
3: C) and resistance (R
7) form, the incoming line of output switching circuit respectively with first hard-disk interface (P
2), second hard-disk interface (P
3), CD-ROM drive or subordinate hard-disk interface (P
8) link to each other output line and computer-side interface (P
1) link to each other; The incoming line of input-switching circuit and computer-side interface (P
1) link to each other; Output line respectively with first hard-disk interface (P
2), second hard-disk interface (P
3) link to each other; The input termination CD-ROM drive of signal distribution circuit or subordinate hard-disk interface (P
8) 39 pin, output terminal meets first hard-disk interface (P respectively
2) 39 pin and second hard-disk interface (P
8) 39 pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98201529 CN2335192Y (en) | 1998-02-25 | 1998-02-25 | Computer hard disc switcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98201529 CN2335192Y (en) | 1998-02-25 | 1998-02-25 | Computer hard disc switcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2335192Y true CN2335192Y (en) | 1999-08-25 |
Family
ID=33958781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98201529 Expired - Fee Related CN2335192Y (en) | 1998-02-25 | 1998-02-25 | Computer hard disc switcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2335192Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346285C (en) * | 2006-01-06 | 2007-10-31 | 华为技术有限公司 | Processor chip, storage control system and method |
| CN100367151C (en) * | 2004-03-02 | 2008-02-06 | 广达电脑股份有限公司 | Portable computer |
| CN101807143A (en) * | 2009-02-17 | 2010-08-18 | 佳能株式会社 | Image processing system |
| CN101853141A (en) * | 2008-09-05 | 2010-10-06 | Lsi公司 | Specifying lanes for SAS wide port connections |
| CN101907978A (en) * | 2010-07-27 | 2010-12-08 | 浙江大学 | Mixed storage system and storage method based on solid state disk and magnetic hard disk |
| CN101661378B (en) * | 2008-08-29 | 2011-09-21 | 智微科技股份有限公司 | Disk array 1 system and reading method for improving reading efficiency |
| CN101809534B (en) * | 2007-09-28 | 2012-09-19 | 富士通株式会社 | Virtual tape device at original center, virtual tape device at duplicate center, virtual library system and virtual tape control method |
| CN103870215A (en) * | 2014-04-12 | 2014-06-18 | 天津瑞发科半导体技术有限公司 | USB solid-state disc firmware storage device |
-
1998
- 1998-02-25 CN CN 98201529 patent/CN2335192Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367151C (en) * | 2004-03-02 | 2008-02-06 | 广达电脑股份有限公司 | Portable computer |
| CN100346285C (en) * | 2006-01-06 | 2007-10-31 | 华为技术有限公司 | Processor chip, storage control system and method |
| CN101809534B (en) * | 2007-09-28 | 2012-09-19 | 富士通株式会社 | Virtual tape device at original center, virtual tape device at duplicate center, virtual library system and virtual tape control method |
| CN101661378B (en) * | 2008-08-29 | 2011-09-21 | 智微科技股份有限公司 | Disk array 1 system and reading method for improving reading efficiency |
| CN101853141A (en) * | 2008-09-05 | 2010-10-06 | Lsi公司 | Specifying lanes for SAS wide port connections |
| CN101807143A (en) * | 2009-02-17 | 2010-08-18 | 佳能株式会社 | Image processing system |
| CN101807143B (en) * | 2009-02-17 | 2014-01-15 | 佳能株式会社 | Image forming apparatus |
| CN101907978A (en) * | 2010-07-27 | 2010-12-08 | 浙江大学 | Mixed storage system and storage method based on solid state disk and magnetic hard disk |
| CN101907978B (en) * | 2010-07-27 | 2011-12-07 | 浙江大学 | Mixed storage system and storage method based on solid state disk and magnetic hard disk |
| CN103870215A (en) * | 2014-04-12 | 2014-06-18 | 天津瑞发科半导体技术有限公司 | USB solid-state disc firmware storage device |
| CN103870215B (en) * | 2014-04-12 | 2015-01-14 | 天津瑞发科半导体技术有限公司 | USB solid-state disc firmware storage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |