CN1241091C - Method and device capable of reducing the number of slots used for external connection of equipment - Google Patents

Abstract

A method and device for reducing the number of slots used for external connection of equipment is suitable for electronic information equipment, which at least includes an interface slot device with more than two purposes, besides being used as the input end of transmission line of peripheral equipment, it can also be used as the input end of wire of external power supply. The plug of the external power input end sets one pin position on the plug as a signal detection pin, when the plug is connected with the interface slot, the plug informs a user of the connected equipment that the external power supply is used for supplying power, and simultaneously utilizes an internal circuit of the connected equipment to separate the external power supply from an internal power supply of the equipment, the interface slot can also be connected with a transmission line of a computer and inputs the power supplied by the computer, thereby achieving the purpose that one slot is used for reducing the number of the external slots of the equipment.

Description

Method and device capable of reducing the number of slots used for external connection of equipment

technical field

The invention relates to a function expansion technology of an interface slot, in particular to a method and a device for merging interface slots used by different devices into a single slot by using an internal circuit design method.

Background technique

With the maturity of computer and electronic technology, electronic information equipment such as digital cameras, personal digital assistants (PDAs), digital video cameras, notebook computers, and electronic dictionaries have developed rapidly and become increasingly popular. Because of this, various product manufacturers They have invested a considerable amount of manpower and material resources in the research and development and improvement of products. They hope to launch a specification model that meets market demand, so as to gain a leading edge in the sales market channel with fierce competition and ever-changing trends. The current market demand trend and various The most time-consuming research and development work of a manufacturer is whether the product function can be connected to the computer to download data online to expand the product function, or transfer the recorded content of the product to the computer hardware for document processing of data content editing and beautification. Therefore, in order to achieve this Market consumer demand, newly launched products are designed with interface slots that conform to the Universal Serial Bus specification for users to use for data transmission and connection. In addition to the requirements of market trends for product software and hardware functions, another factor determines whether the product can be used. The factor that stimulates the user's willingness to consume is the portability of the product, that is, whether it is convenient for the user to carry it around without causing any burden. Therefore, the miniaturization of products is also a project that manufacturers focus on, and they are constantly researching and developing how to reduce the interior of the product. The mechanical structure and the number of integrated circuits can be reduced, and the additional functions of the product can be improved without affecting the original functions of the product. The interface slots attached to the products currently on the market have a one-to-one connection relationship with the device, and a single interface slot can only provide a single device connection, causing product designers to increase the scope of product applications. Under the premise, the volume of the product has to be increased to increase the number of connected devices, which is difficult in the miniaturization design of the product. If a DC adapter (DC Adapter) slot is to be added, the electronic circuit inside the product needs to be added. The parts and the space of the machine board also need to be increased, resulting in an increase in product cost. In addition, in electronic information equipment products, usually each product has some general standard specifications (Compatible specs) and some special specifications (Unique specs), such as digital cameras, personal digital assistants (PDA), digital video cameras , notebook computers and other brands have their own dedicated adapters, if the adapter is damaged, the user must go to the brand's specialty store to purchase an adapter of the same specification, which is quite inconvenient for the user .

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a method and device that can reduce the number of slots used for external connection of equipment, which can be applied to an electronic information system with interface slots that can be connected to other equipment. A device, such as a digital camera, is used to make the volume of the digital camera smaller, which saves manufacturing costs and is easy to carry around.

Another object of the present invention is to provide a method and device suitable for digital cameras that can reduce the number of slots used for external connection of equipment, so that the Universal Serial Bus (Universal Serial Bus; BUS) slots on the digital camera can also be used as The DC adapter plug slot is used, because USB has plug and play (Plug and Play), and can be combined with different computers to support a variety of different types of products, thus exempting users from being limited to using a certain manufacturer Inconvenience caused by the provided DC adapter.

In order to achieve the above object, the present invention provides a method for reducing the number of slots used for external connection of equipment. The method includes the following methods: (1) when no device is placed in the interface slot, the battery attached to the device itself supplies power to the device; (2) when the interface slot is inserted into other device connection plugs, then judge Whether the device is a DC adapter; (4) If it is not a DC adapter device, it means that the plug is the plug of the data transmission line of the computer host, and it is necessary to perform data transmission with the device. At this time, the battery power supply path is cut off, and the computer The host supplies power to the device; (5) If the plug is a DC adapter plug, it will replace the battery to supply power to the device, and the signal detection pin will send a signal to the bus controller to inform the device that the DC adapter is being used for power supply , there is no need to send an automatic power-off command to the device to enter the power-saving mode.

In the method of the present invention, the user can use the transmission wire of USB standard to carry out the data transmission work by connecting various external devices. The method of the invention utilizes circuit design to integrate multiple different external connection slots into a single interface slot. The slot used for the external connection of the device can be a Mini B type USB slot. In the method of the present invention, it is judged whether the external device is a power supply transmission device, wherein the power supply transmission device can be a DC adapter. Moreover, the judging method for judging whether the external device is a power supply transmission device is to set a pin inside the plug of the external device as a detection pin, and when the plug is connected to the slot, the pin transmits a signal to the internal power supply of the device. The device makes a judgment. Wherein said plug can be a standard USB Mini B type specification plug. The sending signal notification controller in the method of the present invention refers to the USB controller, the power saving mode refers to the function of automatically cutting off the power supply to the device; the battery refers to the battery inside the device.

The device of the present invention that can reduce the number of slots used for external connection of equipment includes the following units: (1) a slot for external connection of equipment, which is used to connect external equipment that can perform data transmission with the equipment and meet the USB specification or supply power to the equipment (2) a battery power supply unit, which supplies power to the equipment attached to the interface slot device; (3) a battery power interruption unit, when the interface slot is connected to other equipment such as a computer, the battery power supply The power supply path is cut off and the connected device provides power to the device attached to the slot; (4) a step-down unit, which can reduce the supply voltage of the device connected to the slot to protect the device itself; (5) an overvoltage The protection unit is used to detect the output voltage of the step-down unit. If the voltage exceeds the rated voltage that the chip device in the equipment can withstand, the voltage is isolated from the chip device to prevent the chip device from being damaged and causing the equipment to stop operating; (6) a switch unit , for the user to switch the operation mode of the device. Opening means that the device performs functional operation, and closing means that the device stops functioning; (7) A DC/DC converter (DC/DCCONVERTER) converts the output of the protection circuit unit The DC voltage is converted into a plurality of working voltage outputs suitable for different chip devices; (8) An adapter is inserted into the notification unit, and a detection pin on the DC adapter plug is used to notify it that there is a DC adapter Insertion; (9) A controller is electrically connected with the adapter insertion notification unit, and judges whether the DC adapter is inserted into the slot or not inserted in the slot according to the potential level of the signal transmitted by the notification unit (10) A power cut-off unit, when no interface of any external device is placed in the slot, executes the command issued by the USB controller The automatic power cut command cuts off the power supply path of the device to save battery power in the device.

According to the device of the present invention that can reduce the number of slots used for external connection of equipment, the external connection slot of the equipment can be a USB slot of Mini B type; Power supply, data reading and transmission work, the transmission work can be read and data transmission work through the USB data transmission line; the battery power supply interruption unit can be composed of transistor components and a resistance voltage divider circuit; The unit can be composed of a diode, and the working voltage of the diode itself is used to offset the input voltage value to achieve the purpose of stepping down; the overvoltage protection unit can perform the second-level monitoring work in order to make the device work under a safe voltage. In case the input voltage is too large, causing the equipment to burn; the switch unit can be composed of switch components, resistors and transistors; the adapter can be a DC adapter; the adapter plug can be a USB The distribution of the pins of the Mini B plug is that pin 1 is +5V, pin 2 and pin 3 are empty pins, pin 4 is +5V and pin 5 is ground, and pin 1 is , 4 are connected together, pin 4 is set as a detection pin; the controller can be a USB controller; the power cut-off control unit can be composed of resistors, transistors and capacitors. The above-mentioned method and device for reducing the number of slots used for external connection of equipment utilizes a low-cost circuit design method, so that the external connection slot of a single equipment can be used together with the USB and adapter interface, which can enable product appearance engineers to design the appearance. With more flexible space, the manufacturer does not need to make another dedicated slot and circuit for the adapter, which can reduce the production cost. In addition, the volume of the device itself is also reduced, which increases the convenience of the user for portable use.

Description of drawings

Fig. 1 shows the used adapter plug of the present invention and its internal pin position name distribution situation and the use method of line segment internal wire;

Fig. 2 represents the block diagram of the basic structure of the present invention;

Fig. 3 represents the schematic circuit diagram of the embodiment of Fig. 2, wherein shows the connection relationship between the method of the present invention that can reduce the number of slots used for external connection of equipment and the electronic components contained in the device;

Fig. 4 shows an operation flowchart of the method and device for reducing the number of slots used for external connection of equipment in Fig. 2, which shows the different processing flows of the external connection slot of the equipment when there is equipment inserted and when no equipment is inserted, and when the equipment is obtained The step of sending a signal to inform the controller when the adapter is plugged in.

Explanation of symbols in the figure

1 Adapter plug form

2 Adapter body diagram

3 Internal wire connection diagram of the adapter transmission cable

4 Power supply path unit

41 Battery Power Supply Unit 42 Battery Power Interruption Unit

43 Buck unit 44 Overvoltage protection unit

5 External device detection unit

51 External connection slot 52 Adapter insertion notification unit

53 controller

6 Device mode control unit

61 Switch unit 62 DC/DC converter

63 Power cut control unit

D1, D2, D3 Diodes

Q1, Q2, Q3, Q4 Transistors

A, B, C, D, F, G, H, J Potential points

R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 Resistors

SW switch

ADAPTER_DET Adapter detection signal

USB_PWR USB supply power

PWR_OFF Automatically cut off the power signal

Detailed ways

The method and device for reducing the number of slots used for external connection of equipment according to the present invention will be described in detail below with reference to the accompanying drawings.

In this embodiment, the method and device of the present invention for reducing the number of slots used for external connection of equipment are applied to a digital camera to reduce the number of slots used by the digital camera for external connection, so that the size of the digital camera can be reduced. To increase the convenience of use, among them, the digital camera is connected to various external devices with USB standard transmission wires for data transmission, and the slot used for external connection is a Mini B-type USB slot, and the external device is A device that can actively supply power. It should be noted that the method and device of the present invention that can reduce the number of slots used for external connection of equipment are not limited to be applied to digital cameras. In a broad sense, the present invention can be applied to any device with external connection slots to expand functions The electronic information equipment is used to reduce the size of the electronic information equipment and the number of circuit parts used, and the method of the present invention integrates a plurality of different external connection slots into a single interface slot by means of circuit design.

Fig. 1 shows the adapter used in the method and device of the present invention that can reduce the number of slots used for external connection of equipment and its plug form, the distribution of internal pin names and the use of wires inside the line segment. As shown in the figure, the adapter The distribution of pins of connector plug 1 is as follows: pin 1 is +5V, pin 2 and pin 3 are empty (NC), pin 4 is +5V and pin 5 is ground (GND). The adapter plug is connected to the adapter body 2 through the transmission cable, and the internal wiring 3 of the transmission cable connects pin 1 and pin 4 to +5V, and pin 5 is GND, so the inside of the adapter plug Only 3 pins are used.

As shown in Figure 2, the method and device basic structure of the present invention that can reduce the number of slots used for external connection of equipment, the device is composed of power supply path unit 4, external device detection unit 5 and equipment mode control unit 6; now each The units constituted by the unit are described as follows: the power supply path unit 4 includes a battery power supply unit 41, a battery power supply interruption unit 42, a step-down unit 43, and an overvoltage protection unit 44; the external device detection unit 5 includes a device external connection slot 51, The adapter insertion notification unit 52 , the controller 53 and the switch unit 61 , the DC/DC converter 62 and the power cutoff control unit 63 included in the device mode control unit 6 .

When the battery power supply unit 41 is an equipment external connection slot 51 of a digital camera and no interface plug is inserted and the switch unit 61 (this switch unit 61 is made up of a switch element, a resistor and a transistor) is in an open mode, through the DC/DC converter 62 The 3V power supplied by it is converted and processed to output multiple different voltage values for use by all chip devices inside the digital camera. When the external connection slot 51 of the digital camera is inserted into a USB plug connected to the computer, the digital camera Data transmission is being carried out with the computer. At this time, the switch unit 61 is switched to the on state by the user in advance, and the computer will output a 5V power through the USB plug and transmit it to the inside of the digital camera. The voltage unit 43 (the voltage reduction unit 43 is composed of a diode, uses the working voltage of the diode itself to offset the input voltage value to achieve the purpose of stepping down) to reduce the 5V voltage input by the computer, and pass the reduced voltage through After the voltage protection unit 44 detects and determines that the voltage does not exceed the highest voltage that the switch unit 61 and the DC/DC converter 62 can load, it outputs through the switch unit 61 and the DC/DC converter 62 for the internal chip device of the digital camera. Use, wherein, this overvoltage protection unit 44 is to make the digital camera work under the safety voltage, carries out the operation of the second level of monitoring, to prevent the voltage from being too large, although it is still lower than the digital camera parts after the step-down unit 43 is reduced. The highest voltage it can withstand is much higher, causing the digital camera to burn out. The step-down unit 43 also sends a signal to inform the battery power supply interruption unit 42 to cut off the battery power supply path (the battery power supply interruption unit 42 is composed of a transistor element and a resistor voltage divider circuit) when the voltage supplied by the computer is lowered, that is, to supply power to the digital camera. The source is switched from the battery power supply unit 41 to the computer connected to the external connection slot 51 of the digital camera to provide a power source to save battery power. If the external device interface connected to the external connection slot 51 of the digital camera is changed from a computer to an adapter (As shown in Figure 1) interface, the power supply of the digital camera is provided by the adapter instead of the battery. The power supply path and mode of the adapter are the same as those of the computer, and will not be repeated. When the slot 51 is connected to the adapter, the fourth pin inside the adapter plug will send a signal to the adapter insertion notification unit 52, and when the adapter insertion notification unit 52 determines that the adapter is inserted, Just send a high potential signal to the controller 53 (its preferred embodiment is a USB controller), to inform it that the digital camera is using the adapter for power supply, and there is no need to issue an automatic cut-off number to the power cut-off control unit 63 for saving battery power. Camera power supply and enter the instruction of power-saving mode (this power cut-off control unit 63 is made up of resistance, transistor and capacitor); On the contrary, if the adapter is not inserted into the external connection slot 51 of the digital camera, that is, the pin does not receive the adapter The provided 5V voltage, so the signal received by the adapter insertion notification unit 52 is a low-potential signal close to 0V. After processing and judgment, it transmits a low-potential signal to inform the controller 53 that the digital camera needs to be automatically cut off. The power supply function enables the power cutoff control unit 63 to switch the operation mode of the digital camera to off through the switch unit to save battery power.

Fig. 3 shows a schematic circuit diagram of an embodiment of the device of Fig. 2 that can reduce the number of slots used for external connection of equipment, which shows the connection relationship between the method for reducing the number of slots used for external connection of equipment and the electronic components contained in the device, As shown in the figure, when the 1 external connection slot 51 of the digital camera is not inserted into any interface, its internal power is supplied by the 3V battery in the battery power supply unit 41, and because there is no external power input, the gateway of the Q1 transistor is in a conducting state , the battery voltage will flow from the A potential point of the power supply path unit 4 to the D potential point, and the D potential point will flow to the F potential point of the device mode control unit 6. The voltage value is 3V. When the user presses the switch component SW of the switch unit 61 In order to make the voltage transmission path conduction, at the same time, the transistors Q2 and Q3 in the switch unit 61 also form a conduction path so that no current passes through the path where the J potential point is located, so that the J potential point is at a low potential, so that the DC/ The DC converter 62 controls the conduction of the pins to provide three voltages (1.8V, 3.3V and 5V) for use by all chip devices.

When inserting the plug from the computer transmission end to the external connection slot 51 of the digital camera, the computer plug transmits 5V voltage to the D1 diode of the step-down unit 43 from the computer end, and from the D1 diode to the C potential point, the voltage is 4.4V, and the battery is powered R3 and R5 of the interruption unit 42 are voltage dividing resistors, and the voltage drop from the C potential point of the step-down unit 43 to the B potential point of the battery power supply interruption unit 42 is 3.6V, which is greater than the 3V voltage provided by the battery, so the battery power supply interruption unit 42 The Q1 of the Q1 forms an open circuit, and the battery voltage is no longer supplied. The 4.4V voltage at the C potential point is reduced to 3.2V by the D2 and D3 diodes in the step-down unit 43 to 1.2V, so the voltage does not exceed the switch unit The limit of the voltage that can be tolerated, so the overvoltage protection unit 44 is in the conduction state and the voltage drop at the D potential point is also 3.2V. When the user presses the switch component SW of the switch unit 61 to make the voltage transmission path conduction, 3.2V The V voltage will be transmitted from the D potential point to the F potential point within the range of the device mode control unit 6. At the same time, the transistors Q2 and Q3 in the switch unit 61 also form a conduction path so that there is no current on the path where the J potential point is located. By making the J potential point low, the DC/DC converter 62 controls the pin to be turned on to provide three voltages (1.8V, 3.3V and 5V) for use by all chip devices.

If the external connection slot 51 of the digital camera is inserted into the connector of the adapter, the adapter will supply 5V voltage to the digital camera through the slot, and the path of the voltage, the step-down mode and the interruption method of the battery power supply path are all the same as those described above. The computer interface is the same, so I won’t go into details. Here, I only illustrate the operation of the internal unit of the external device detection unit 5 after the adapter is inserted into the slot. There are only 3 pins in the adapter plug that are used in actual situations. Pin 1 and pin 4 are connected together for +5V, pin 2 and pin 3 are empty pins, pin 4 is also the detection pin of the adapter, pin 5 is the ground pin, when the user inserts the converter into the plug slot, the 5V voltage output by pin 4 is sent from the G potential point of the detection unit 5 to the H potential point of the adapter insertion notification unit 52, R9 and R10 are voltage divider resistors, and the voltage at the H potential point is 3.3 V, so the adapter is inserted into the notification unit 52 to send a high potential signal to the controller 53, so that it knows that the digital camera is using the adapter to supply power and does not execute an instruction to automatically cut off the power supply, if the external connection slot of the digital camera 51 is not inserted into the adapter, then the H potential point potential of the adapter insertion notification unit 52 is 0, and if the digital camera has not performed any functional action for a period of time, it will send a low potential signal to the controller 53, To inform the digital camera that the adapter is not used for power supply, it needs to be given an instruction to automatically power off, and the power supply of the digital camera is turned off through the power cutoff control unit 63 to save battery power.

Fig. 4 shows the operation flowchart of an embodiment of the method and device for reducing the number of slots used for external connection of equipment in Fig. 2, wherein the different processing flows of the external connection slot 51 are shown when there is equipment inserted and when no equipment is inserted, and the step of sending a signal to the controller when the adapter is known to be plugged in.

As shown in FIG. 4 , first, in S1 , it is detected whether an external device is inserted into the external connection slot 51 of the digital camera. If there is an external device inserted, then S2 is performed; if not, then S5 is performed.

In S2, detect whether the internal detection pin of the plug of the external device transmits the adapter insertion signal to the digital camera (the converter is the implementation of the power supply transmission device, and its best implementation is a DC adapter), that is The pin inside the plug of the external device is defined as a detection pin, and when the plug is connected to the slot, the pin transmits a signal to the inside of the digital camera for the digital camera to judge (the plug is a standard USB Mini B specification plug), if there is a transmission adapter insertion signal, then go to S3, if not, then go to S6.

In S3, the adapter inputs 5V power into the digital camera through the external connection slot 51 of the digital camera, and then proceeds to S4.

In S4, the adapter insertion signal is sent to the controller to inform it that there is no need to send an instruction to automatically cut off the power supply to the digital camera, that is, at this time, it is not necessary to perform the power-saving mode operation of automatically cutting off the power supply to the digital camera, and then proceed to S7 , where the controller is the USB controller.

In S5, the power supply source of the digital camera is converted to 3V voltage supplied by the battery power supply, and then S7 is performed, wherein the battery refers to the battery inside the digital camera, which can be powered by the digital camera without external equipment. In some cases, the stored power is directly supplied to the digital camera.

In S6, the power supply source of the digital camera is changed to the 5V voltage supplied by the computer power supply, and then S7 is performed.

In S7, the power supplied to the digital camera is processed by the internal circuit and divided into various voltage outputs for use by the internal chip device.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the substantive technical content of the present invention. The substantive technical content of the present invention is broadly defined in the claims of the present invention. If any technical entity or method completed by others is exactly the same as that defined in the claims of the present invention, or is an identical and equivalent change, are deemed to be covered by this claim.

Claims (20)

1, a kind of externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that, it is applicable in the electronic message unit, this electronic message unit comprises an interface slot device at least, connect various external devices to carry out data transmission work for the user, this external device power supply initiatively wherein, this method may further comprise the steps:

S1, whether judgment device externally connects used slot and is connected with external device, then carries out S2 immediately as if being connected with external device, then carries out S5 if nothing is connected with external device;

S2 judges that whether this external device is power supply supply transmitting device, if power supply supply transmitting device carries out S3 immediately, if not, then carries out S6;

S3, by power supply supply transmitting device to supply of equipment electric power after, input equipment inside is carried out S4 immediately;

S4 sends the controller that signal is informed this electronic message unit inside, and equipment is just powered by power supply supply transmitting device, after not needing equipment carried out the action of battery saving mode, carries out S7 immediately;

S5 when slot is not connected with arbitrary external device, after then by the battery of this electronic message unit inside equipment being powered, carries out S7;

S6 after by the external device of this non-power supply supply transmitting device equipment being powered, carries out S7; And

S7 will after the internal circuit of this electronic message unit is handled, be divided into the inside chip device use of various different voltages output for this electronic message unit to the electric power of supply of equipment.

2. as claim 1 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that connecting various external devices for the user is to utilize the transfer wire of USB specification to carry out data transmission work.

3. as claim 1 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that this method is meant that the mode of utilizing circuit design is integrated into the single face slot with a plurality of different external connection slots.

4. as claim 1 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that equipment externally connects the USB slot that used slot is a Mini Type B formula.

5. as claim 1 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that, judge wherein whether tipping is in addition put is power supply supply transmitting device, and this power supply supply transmitting device is for flow breakout box always.

6. as claim 1 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that, judge wherein whether tipping is in addition put is power supply supply transmitting device, the method of its judgement is that a pin position with this external device plug inside is decided to be the detection pin, when plug was connected with slot, this pin position was just transmitted a signal to device interior supply equipment and is judged.

7. as claim 6 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that described plug is a standard USB Mini Type B specification plug.

8. as claim 1 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that the described signal of sending informs that controller is meant the USB controller.

9. as claim 1 a described externally method of the used slot quantity of connection of equipment that reduces, it is characterized in that described battery saving mode is meant carries out a function of cutting off the electricity supply automatically to equipment.

10. one kind can be reduced the interface slot device that equipment externally connects used slot quantity, it is characterized in that, it is applicable in the electronic message unit, this electronic message unit comprises an interface slot device that electrically connects with this electronic message unit at least, connect various external devices to carry out data transmission work for the user, this external device power supply initiatively wherein, this interface slot device comprises following member:

A battery power supply unit when equipment externally connects slot and is not connected with any external device, is directly powered to equipment with its stored electric weight;

An equipment externally connects slot, in order to supply equipment body and other external device in addition thereof, powers each other, data reads transmission work;

A powered battery interrupt location when the external device that is connected on the external connection slot is powered to apparatus body, cuts off the path of battery to power devices, provides electric power and change by external device;

A pressure unit, the voltage that external device is imported is downgraded, in case the part of too high voltage damage device interior;

An overvoltage protection unit, the voltage that pressure unit is downgraded back output is examined again, when if the voltage after downgrading still is higher than the ceiling voltage that other unit in the equipment can bear, just the path with this voltage is cut off, if can not cause damage to the unit, then, supply power to device interior to make it with the path conducting of this voltage;

A switch element switches the operating mode of equipment for the user;

A DC/DC transducer, the voltage that power source provided handled conversion after, the chip apparatus of exporting in the voltage supply equipment of a plurality of different sizes use;

A breakout box inserts informs the unit, externally is connected slot with equipment and electrically connects, and when adapter plug is connected with slot, receives the signal that the detection pin position on the adapter plug is sent, and is sent to controller after the processing and judges for it;

A controller is informed the signal that the unit is imported according to receiving from the breakout box insertion, judges whether to need equipment is carried out the function of battery saving mode;

A dump control module, itself and controller electrically connect and via the instruction of switch element implementation controller to its opening device battery saving mode function of assigning.

11., it is characterized in that described equipment externally connects the USB slot that slot is a Mini Type B formula as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces.

12. as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces, it is characterized in that, described apparatus body and other external device in addition thereof, power each other, data reads transmission work, this transmission work is read and data transmission work by the usb data transmission line.

13., it is characterized in that described powered battery interrupt location is made of transistor component and a resistor voltage divider circuit as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces.

14. as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces, it is characterized in that, described pressure unit is made of diode, and the operating voltage of utilizing diode itself is to offset input voltage value to reach the step-down purpose.

15. as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces; it is characterized in that; described overvoltage protection unit can work under the safe voltage for making equipment; carry out the work of second layer monitoring; in case input voltage is excessive, and cause equipment burnout.

16., it is characterized in that described switch element is made up of switch module, resistance and transistor as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces.

17., it is characterized in that described breakout box is the direct current breakout box as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces.

18. as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces, it is characterized in that, described adapter plug is a USB Mini Type B plug, distribution scenario of pin position is that pin 1 is+5V in it, pin 2, pin 3 are empty pin, pin 4 is+5V and pin 5 are ground connection, and wherein its pin 1,4 is connected together, pin 4 is made as the detection pin.

19., it is characterized in that described controller is the USB controller as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces.

20., it is characterized in that described dump control module is made up of resistance, transistor and electric capacity as claim 10 a described externally interface slot device of the used slot quantity of connection of equipment that reduces.

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