CN100489825C - Expansion module and expansion method of general serial bus connection port - Google Patents
Expansion module and expansion method of general serial bus connection port Download PDFInfo
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- CN100489825C CN100489825C CNB2006100901785A CN200610090178A CN100489825C CN 100489825 C CN100489825 C CN 100489825C CN B2006100901785 A CNB2006100901785 A CN B2006100901785A CN 200610090178 A CN200610090178 A CN 200610090178A CN 100489825 C CN100489825 C CN 100489825C
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- usb interface
- control signal
- connection port
- serial bus
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Abstract
Being applicable to local system device of having program-controlled unit, the expansion module includes USB interface connection units, a switching unit, and a power switch unit. Being connected to a peripheral unit, USB interface connection unit outputs a sensed signal sent to program-controlled unit for it to carry out determination. Based on a first control signal from the program-controlled unit after its determination, the switching unit is in use for switching the peripheral unit. Based on a second control signal from the program-controlled unit after its determination, the power switch unit turns on/off voltage needed by the peripheral unit. Thus, through switching by the said switching unit, single USB connection port of the local system device ca use multiple peripheral units so as to reach purpose of expanding USB connection port.
Description
Technical field
The present invention relates to a kind of enlargement module and extending method is meant a kind of in order to expand the module and the method for general serial bus connection port.
Background technology
Since universal serial bus (USB) but the simpler and easy and specification flexible Application of hardware design on multiple product, for example storage device, portable media playing apparatus, socket device, various I/O device or even digital television receiving apparatus etc., more and more products all are to adopt USB to be used as the interface of data access.And USB 2.0 specifications of using can meet the requirement of most products especially on transmission speed at present.
And also since the peripheral product of USB popularize and increasing, use is not quantitatively often applied in connectivity port at usb host end (as computing machine, multimedia playing apparatus), therefore modal expansion connectivity port mode is to see through USB Hub to reach the expansion effect, and moreover the USB expansion board that be exactly to see through various interfaces increase the connectivity port of usb host end, yet these extended modes all will be reflected on the cost, and increase the extra cost of user.In addition, there is the trend of doing littler and littler in the host side system now, and that adds that general multimedia playing apparatus is particular about is exactly frivolous and does not take up space, if the circumscribed USB expanding device then certainly will produce more not convenient property; If adopt the mode of built-in USB Hub chip then can increase cost again.
Therefore, how spending under the less cost, can reach the expansion usb connecting port effectively, and can have easy operation in the use to switch, be to become the problem that is worth improvement at present.
Summary of the invention
In view of this, technical matters to be solved by this invention, be not use USB Hub chip and utilize the simplified hardware circuit and the software control of arranging in pairs or groups, carry out the switching of power supply and data bus, can't share the problem of same usb connecting port in order to solve many group USB peripheral units.
In order to address the above problem, according to a kind of scheme proposed by the invention, a kind of enlargement module of general serial bus connection port is provided, and is to be applied to this machine system equipment with program-controlled unit, and it comprises: several USB interface linkage units, switch a unit and a power switch unit.Wherein USB interface linkage unit is respectively in order to connecting a peripheral unit, and after one of described peripheral unit inserted USB interface linkage unit, this peripheral unit was exported a detection signal and given program-controlled unit; And switch unit is to be electrically connected between USB interface linkage unit and this machine system equipment, switch the described peripheral unit of selection with one first control signal of being exported according to this program-controlled unit, power switch unit is to come the required voltage of the described peripheral unit of switch according to one second control signal that this program-controlled unit is exported in addition.
In order to address the above problem, according to another kind of scheme proposed by the invention, a kind of enlargement module How It Works of general serial bus connection port is provided, a kind of extending method of general serial bus connection port, it is characterized in that, be applied to a machine system equipment, its step comprises: provide several USB interface linkage units to be connected in one and switch the unit; Judge whether described USB interface linkage unit has at least one peripheral unit of connection; When described USB interface linkage unit was connected with this peripheral unit, this this machine system equipment received the detection signal that this peripheral unit produces; This this machine system equipment is exported one first control signal according to this detection signal and is given this switch unit, and export one the 2nd control system letter Give, one power switch unit according to this detection signal, and this power switch unit is to export to one first voltage of the peripheral unit that is connected with described USB interface linkage unit in order to control this this machine system equipment, and further opens or close this first voltage according to this second control signal; And this switch unit switches one of described USB interface linkage unit according to this first control signal and carries out data transmission with this this machine system equipment.
Above general introduction and ensuing detailed description and accompanying drawing all are to reach mode, means and the effect that predetermined purpose is taked in order to further specify the present invention.And relevant other purpose of the present invention and advantage will be set forth in follow-up explanation and accompanying drawing.
Description of drawings
Fig. 1 is the enlargement module preferred embodiment calcspar of general serial bus connection port of the present invention;
Fig. 2 is the extending method preferred embodiment process flow diagram of general serial bus connection port of the present invention;
Fig. 3 is an Application Example calcspar provided by the present invention; And
Fig. 4 is an Application Example process flow diagram provided by the present invention.
Symbol description
This machine system equipment 10 first voltages 101
Second voltage, 102 program-controlled units 11
First control signal, 111 second control signals 112
Switch unit 20 USB interface linkage units 30
SD card connector 70 usb connecting ports 80
Embodiment
Please refer to Fig. 1, it is the enlargement module preferred embodiment calcspar of general serial bus connection port of the present invention, as shown in the figure, the invention provides a kind of enlargement module of usb connecting port, be to be applied to this machine system equipment 10 with program-controlled unit 11, it comprises: one switches unit 20, several USB interface linkage units 30 and a power switch unit 40.Wherein USB interface linkage unit 30 can for example be that kenel with usb connecting port or card connector (Socket) presents, and respectively in order to connect a peripheral unit (figure does not show), in this external a plurality of USB interface linkage unit 30, can one of them be set by program-controlled unit 11 and be the high power and position USB of tool interface linkage unit (figure does not show), to have first priority picks who uses.
And after arbitrary peripheral unit inserts USB interface linkage unit 30, promptly can produce a detection signal 301 and give program-controlled unit 11, and then program-controlled unit 11 can be exported one first control signal 111 and one second control signal 112 by judging this detection signal 301.And the switch unit 20 that is electrically connected between USB interface linkage unit 30 and this machine system equipment 10 is to switch according to first control signal 111 that program-controlled unit 11 is exported to select described peripheral unit, and come switch peripheral unit required voltage of when running by second control signal 112 that power switch unit 40 is exported according to program-controlled unit 11, wherein switch unit 20 is data bus changeover modules, in order to switch the data-signal that connects peripheral unit; And peripheral unit required voltage of when running is one first voltage 101 that is provided by host computer system device 10, and can be again see through a voltage regulator 50 101 conversions of first voltage are output as one second voltage 102, required when supplying different peripheral unit runnings.
In addition, program-controlled unit 11 is exported first control signal 111 and second control signal 112 except seeing through judgement detection signal 301, more can be by receiving the selection of an Application Program Interface or a telepilot, control first control signal 111 exported and second control signal 112 to switch to the peripheral unit that user institute desire is used.
Please refer to Fig. 2, it is the extending method preferred embodiment process flow diagram of general serial bus connection port of the present invention, as shown in the figure, the invention provides a kind of enlargement module How It Works of usb connecting port, it is to be applied to this machine system equipment 10, and its step comprises: judge at first whether this enlargement module connects at least one peripheral unit (S201), if the result who judges is for being, i.e. expression has peripheral unit to be connected in USB interface linkage unit 30, and this machine system equipment 10 can provide one first voltage 101, and the program-controlled unit in this machine system equipment 10 11 can output second control signal 112 with turn-on power switch element 40 and then supplied first voltage 101 and give described peripheral unit, wherein USB interface linkage unit 30 can for example be that kenel with usb connecting port or card connector presents.Confirm again subsequently in the USB interface linkage unit 30, whether one is set to high power and position USB interface linkage unit has been connected with peripheral unit (S203), if the result who confirms is for being, then program-controlled unit 11 outputs one first control signal 111 is switched the USB interface linkage unit (S205) that has high power and position to this with the data bus of control switch unit 20, so that the peripheral unit that connects thereon can carry out data transmission with this machine system equipment 10.Wherein switch unit 20 is data bus changeover modules, is to see through to switch to connect the data bus of described USB interface linkage unit 30.
Then, judge whether further that again the selection that receives Application Program Interface or telepilot switches the described peripheral unit that has connected (S207), if judged result, is then controlled the data bus of switch unit 20 for being and is given the user USB interface linkage unit 30 (S209) of selected peripheral unit use to switch; Otherwise if the judged result of step (S207) is not for, then to step (S205) keeping the state of the data bus of switch unit 20 originally, and switch in USB interface linkage unit with high power and position.
And if the judged result of step (S201) is not, promptly represent to be connected on the USB interface linkage unit 30 without any peripheral unit, this moment, program-controlled unit 11 just came powered-down switch element 40 by second control signal 112 of output, blocking first voltage 101 (S211) that this machine system equipment 10 is provided, and reach the effect of power saving.In addition, if the affirmation result of step (S203) is for denying, the data bus of then controlling switch unit 20 is to switch in the USB interface linkage unit 30 (S213) in the present use, just the selection that further judges whether to receive Application Program Interface or telepilot is afterwards again switched and is used the described peripheral unit that has connected (S215), if judged result is for being the USB interface linkage unit 30 that then same execution in step (S209) uses for selected peripheral unit with the data bus of control switch unit 20; Opposite, if judged result is not for, then to step (S213) to keep the state of the data bus of switch unit 20 originally equally.
In addition, whenever controlling switch units 20 with before carrying out the switch data bus in first control signal 111, second control signal 112 can be controlled powered-down switch element 40 earlier to block the conducting of first voltage 101, by the time after switch unit 20 switch data buses are finished, control power-on switch element 40 again with conducting first voltage 101.
Please also refer to Fig. 3 and Fig. 4, be an Application Example calcspar and a process flow diagram provided by the present invention, it is to be applied to a portable media playing apparatus 60, wherein at first see through program-controlled unit 11 and judge whether portable media playing apparatus 60 is in dvd playback pattern (S401), if judged result then judges whether be connected with the SD card on the SD card connector 70 or be connected with USB device (S403) on usb connecting port 80 by detection signal 301 for not again.And in the present embodiment, be that setting is higher power and position with SD card connector 70, therefore in the judged result of step (S403) for after being, confirm that then the SD card has inserted (S405) in the SD card connector 70, if confirm that the result is for being, just first control signal of being exported through program-controlled unit 11 111 is controlled switch unit 20, switches to SD card connector 70 (S407) with the data bus with switch unit 20; Otherwise, if the affirmation result of step (S405) is that then the data bus with switch unit 20 does not switch to usb connecting port 80 (S409).And reach (S409) afterwards in step (S407), judge whether again that respectively user's desire reaches (S413) to do switching (S411) between different patterns or peripheral unit through the selection of Application Program Interface or telepilot, if step (S411) and judged result (S413) are for being, then control the data bus of switch unit 20 and give SD card connector 70 or usb connecting port 80, perhaps pattern is directly switched to dvd playback pattern (S415).
Wherein whenever controlling switch units 20 with before carrying out the switch data bus in first control signal 111, program-controlled unit 11 can see through second control signal, 112 first powered-down switch elements 40 to block the conducting of first voltage 101, by the time after switch unit 20 switch data buses are finished, control power-on switch element 40 again with conducting first voltage 101.And can see through voltage regulator 50 again so that first voltage 101 is converted to second voltage 102, with the required running voltage of supply SD card.
And if the original judged result of step (S401) is for being, then second control signal 112 is understood powered-down switch elements 40 blocking first voltage 101, and directly plays CD (S417).And in the judged result of step (S403) for not, i.e. any SD card or USB device are not inserted in expression, so just first voltage 101 is closed (S419) to reach power saving effect.
But; the above; only be the detailed description and the accompanying drawing of specific embodiments of the invention; be not in order to restriction the present invention; all scopes of the present invention should be as the criterion with claim; anyly be familiar with this technician in the field of the invention, can think easily and variation or modify all can be encompassed in the protection domain that following this case defines.
Claims (12)
1, a kind of enlargement module of general serial bus connection port is characterized in that, is applied to this machine system equipment with program-controlled unit, comprising:
Several USB interface linkage units, respectively in order to connecting a peripheral unit, when this peripheral unit inserted one of them described USB interface linkage unit, described peripheral unit was exported a detection signal and is given this program-controlled unit;
One switches the unit, is to be electrically connected between described USB interface linkage unit and this this machine system equipment, and switches the described peripheral unit of selection according to one first control signal that this program-controlled unit is exported; And
One power switch unit is that one second control signal exported according to this program-controlled unit is with the required voltage of the described peripheral unit of switch;
Wherein, described program-controlled unit is by judging this detection signal, and exports this first control signal and this second control signal.
2, the enlargement module of general serial bus connection port as claimed in claim 1, it is characterized in that described program-controlled unit is that the alternative detection signal of selection that receives an Application Program Interface or a telepilot is controlled this first control signal and this second control signal of being exported.
3, the enlargement module of general serial bus connection port as claimed in claim 1 is characterized in that, described USB interface linkage unit is that the kenel with usb connecting port or card connector presents.
4, the enlargement module of general serial bus connection port as claimed in claim 1 is characterized in that, one of described USB interface linkage unit is to be set to high power and position USB interface linkage unit.
5, the enlargement module of general serial bus connection port as claimed in claim 1 is characterized in that, described switch unit is a data bus changeover module.
6, the enlargement module of general serial bus connection port as claimed in claim 1 is characterized in that, the required voltage of described peripheral unit is one first voltage that is provided by this this machine system equipment.
7, the enlargement module of general serial bus connection port as claimed in claim 6 is characterized in that, the required voltage of described peripheral unit is further to see through a voltage regulator so that this first voltage transitions is exported one second voltage.
8, a kind of extending method of general serial bus connection port is characterized in that, is applied to a machine system equipment, and its step comprises:
Provide several USB interface linkage units to be connected in one and switch the unit;
Judge whether described USB interface linkage unit has at least one peripheral unit of connection;
When described USB interface linkage unit was connected with this peripheral unit, this this machine system equipment received a detection signal of this peripheral unit output;
This this machine system equipment is exported one first control signal according to this detection signal and is given this switch unit, and export one second control signal according to this detection signal and give a power switch unit, and this power switch unit is to export to one first voltage of the peripheral unit that is connected with described USB interface linkage unit in order to control this this machine system equipment, and further opens or close this first voltage according to this second control signal; And
This switch unit switches one of described USB interface linkage unit according to this first control signal and carries out data transmission with this this machine system equipment.
9, the extending method of general serial bus connection port as claimed in claim 8 is characterized in that, described switch unit is to see through to switch to connect the data bus of described USB interface linkage unit.
10, the extending method of general serial bus connection port as claimed in claim 8, it is characterized in that, one of described USB interface linkage unit is to be set to high power and position USB interface linkage unit, so that this switch unit preferentially switches this high power and position USB interface linkage unit and this this machine system equipment carries out data transmission.
11, the extending method of general serial bus connection port as claimed in claim 8 is characterized in that, described USB interface linkage unit presents with the kenel of usb connecting port or card connector.
12, the extending method of general serial bus connection port as claimed in claim 8, it is characterized in that, comprise that further the selection that this this machine system equipment receives an Application Program Interface or a telepilot substitutes this first control signal and this second control signal that detection signal is controlled output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100901785A CN100489825C (en) | 2006-07-03 | 2006-07-03 | Expansion module and expansion method of general serial bus connection port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100901785A CN100489825C (en) | 2006-07-03 | 2006-07-03 | Expansion module and expansion method of general serial bus connection port |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101101582A CN101101582A (en) | 2008-01-09 |
| CN100489825C true CN100489825C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100901785A Expired - Fee Related CN100489825C (en) | 2006-07-03 | 2006-07-03 | Expansion module and expansion method of general serial bus connection port |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777032A (en) * | 2009-01-14 | 2010-07-14 | 华为终端有限公司 | Method and equipment for realizing USB endpoint multiplexing |
| CN101719111B (en) * | 2009-11-06 | 2012-07-18 | 中兴通讯股份有限公司 | Integration equipment and realizing method thereof |
| US20110191616A1 (en) * | 2010-02-03 | 2011-08-04 | Action Star Enterprise Co., Ltd. | Usb power managing system and method thereof |
| CN102375530A (en) * | 2010-08-20 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Expansion seat with input signal switching function |
| CN103177748B (en) * | 2011-12-21 | 2015-06-03 | 纬创资通股份有限公司 | Portable data storage device |
| CN105808488B (en) * | 2014-12-31 | 2019-07-02 | 新加坡商华科全球股份有限公司 | Electronic device and its power source supplying controlling method |
| CN108513656B (en) * | 2017-04-28 | 2021-05-28 | 深圳市大疆创新科技有限公司 | Control method, USB system and electronic device |
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2006
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| CN101101582A (en) | 2008-01-09 |
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