CN2630930Y

CN2630930Y - USB adaptor capable of displaying transmission mode

Info

Publication number: CN2630930Y
Application number: CN 03264930
Authority: CN
Inventors: 陈文斌; 王裕祺
Original assignee: KYE Systems Corp
Current assignee: KYE Systems Corp
Priority date: 2003-06-06
Filing date: 2003-06-06
Publication date: 2004-08-04
Anticipated expiration: 2013-06-06

Abstract

The utility model is about a USB conversion adapter that can display transmission state, which is mainly provided two USB adapters on a pedestal, the two adapters are A and B forms respectively and are connected with each other, thus can provide the interface port form for the conversion USB device; in addition, a signal detection display circuit is bridge connected at the linking line in the pedestal of the two USB adapters, which can detect and display the signal transmission state between the two USB adapters, by which, the user can make a confirmation.

Description

The USB adapter that can show transmission state

Technical field

The utility model is the USB adapter that shows transmission state about a kind of, refers to a kind of for changing USB interface port form and can detecting the also USB adapter of display data transmissions state especially.

Background technology

Since USB interface is come out, with high-speed transfer be connected in series the peripheral advantage that can reach 127, make recently most computers, peripherals etc. all be adopted as standard interface, in addition, also adopt USB interface in succession as e-dictionary, personal digital assistant, digital camera, carry-on dish etc., fully reflect the universal situation of USB interface on present market, its reason is not hard to imagine to be relevant with the transmission speed of the high multiple of USB interface.With present existing on the market digital camera is example, its storing mode major part is to adopt memory card collocation USB interface, the former is the Storage Media as digital image data, and the latter is used for the data that the built-in internal memory of digital camera or memory card store is reprinted to computing machine.Yet, what make that most of users feel to perplex is: it is relevant with The built-in internal memory or memory card capacity that digital camera is taken the number of photograph, and memory card amount of capacity and price height are proportional, it means that the user has when taking a large amount of photograph demand, must prepare enough to count the memory card of (appearance) amount, and the high price of a memory card burden greatly beyond doubt.But these problems still have the compromise leeway that solves, and feasible method is when the digital camera memory capacity is not enough, and inside information is directly reprinted computing machine, or temporarily reprint to the bigger carry-on dish storage of capacity, use for continuing to vacate capacity.Aforesaid reprinting action must use the USB interface and the conversion line of digital camera, owing to consider the problem of volume, the USB interface of using on the digital camera is USB B form, that is general alleged USB mini, but the USB interface of general storage devices such as the carry-on dish then USB standard interface with general computing machine is identical, be USB A form, and the different problem of size is arranged on specification, so must utilize conversion line (USB BF changes USB AF) 70 as shown in Figure 4 to transfer USB A form to for the interface port of USB B form originally, can successfully link with carry-on dish.This kind mode has no doubt solved the consumption problem of memory card, but still has following shortcoming:

1. conversion line two ends are respectively multi-form USB joint, but are the wire rod binding with equivalent length therebetween, so the suitable volume of tool also takes up space.

2. after the conversion line links, whether normal transmission is also unknown for the two ends data, suppose that the conversion line breaks because of internal wiring, cause the data can't normal transmission and cause, unless changing a conversion line this moment uses, otherwise promptly can't confirm it is conversion line broken string, or the device at two ends breaks down, so there is puzzlement on using really actually.

From the above, existing conversion line has no doubt solved the transfer problem of USB interface A, B form, but still has the solution still to be overcome of some shortcoming.

Summary of the invention

Therefore, the utility model fundamental purpose is to provide a kind of for changing the USB interface form and can detecting the also pocket USB adapter of display data transmissions state.

For reaching the main technical schemes that aforementioned purpose takes is to set up two USB joints on a pedestal separately, and two USB joints are to be respectively A, B form, and interconnect, thereby for the interface port form of conversion USB device; Wherein:

Cross-over connection has an input and display circuit on the connection line of two USB joints in pedestal, in order to detect and to show whether two transmission state signals between the USB joint are normal, confirm for the user.

Aforesaid input and display circuit are made up of a transistor AND gate one light emitting diode, wherein transistor base is to see through a resistance to be connected across on the data line of USB joint, its collection utmost point is to connect light emitting diode, and seeing through the power lead that this light emitting diode, a resistance are connected to the USB joint, its emitter-base bandgap grading then connects the ground wire of USB joint; When on the connection line between two USB joints data transmission being arranged, transistor is conducting, and makes the light emitting diode energising and light, and the user can judge whether adapter is working properly by whether lighting of light emitting diode.

USB joint on the aforementioned pedestal is USB BM (public affairs) formula, and another USB joint is USB AF (mother) formula, and the former is for the USB interface port (USB BF (mother) formula) that is plugged to product, and the latter pegs graft with its USB AM (public affairs) formula joint for carry-on dish to link.

Description of drawings

Fig. 1 is an outside drawing of the present utility model.

Fig. 2 is a user mode synoptic diagram of the present utility model.

Fig. 3 is a circuit diagram of the present utility model.

Fig. 4 is existing USB conversion line outside drawing.

Among the figure

10 pedestals 11 a USB joint

12 the 2nd USB joints, 13 connection lines

20 input and display circuit 21 transistors

22 light emitting diodes 30 are dish 70 conversion lines with oneself

Embodiment

The outward appearance of relevant the utility model one preferred embodiment as shown in Figure 1, mainly be on a pedestal 10, to be arranged with one the one USB joint 11 and one the 2nd USB joint 12, in the present embodiment, the one USB joint 11 is USB BM (public affairs) formula, for being plugged to one first electronic installation, as digital camera, personal digital assistant (PDA, personal digital assistant), the USB interface port of mobile phone (cellphone) or the like product (USB BF (mother) formula), the 2nd USB joint 12 is USB AF (mother) formula, for a second electronic device, wait storage device as carry-on dish 30 (portable flash diskdrive) with the binding (as shown in Figure 2) of pegging graft of USB AM (public affairs) formula joint with flash memory.Again, the one USB joint 11 and the 2nd USB joint 12 are to see through at pedestal 10 inner set connection lines (this is not shown in the figures) to interconnect, on this connection line and cross-over connection one input and display circuit are arranged, this input and display circuit have at least a pilot lamp (present embodiment adopts light emitting diode 22) to expose to outside the pedestal 10, whether light according to cresset for the user and confirm whether adapter work is normal.

About the detailed construction of pedestal 10 inner set connection lines and input and display circuit, as described below:

As shown in Figure 3, be to see through one group of connection line 13 to be connected corresponding pin between an aforementioned USB joint 11 and the 2nd USB joint 12, so that make the two formation online.

As previously mentioned, cross-over connection has an input and display circuit 20 on this connection line 13, this input and display circuit 20 are made up of a transistor 21 and a light emitting diode 22, wherein transistor 21 base stages are to see through a resistance R 2 to be connected across on the connection line 13, on the data pin (D-) of corresponding two USB joints; The transistor 22 collection utmost points are to connect this light emitting diode 22, and are connected on the connection line 13 the power pin V-USB of corresponding two USB joints through this light emitting diode 22, a resistance R 1; Its emitter-base bandgap grading then is connected on the connection line 13, the ground connection pin (GND) of corresponding two USB joints.

Under the aforementioned circuit structure, when on the connection line 13 of 12 of USB joints 11, the 2nd USB joint data transmission being arranged, will on transistor 21 base stages, produce current potential and make its conducting, can make electric current it be lighted by light emitting diode 22.

In addition, if during connection line 13 broken strings of 12 of USB joints 11, the 2nd USB joint, be no current on the light emitting diode 22 by and can't light.

Utilize previous designs, whether the user can lighting to judge whether this adapter is working properly according to this light emitting diode 22.

Can understand concrete structure of the present utility model and working method thereof after above stated specification, this design possesses following advantage at least:

Volume small and exquisite, do not take up space and be easy to carry: because the utility model is to set up two USB joints that mutually link on the pedestal of a single-piece separately, there is no wire rod between two USB joints links, its volume can be significantly dwindled in event, minimizing takes up room, thereby can be convenient for carrying.

2. can confirm effectively whether adapter is working properly: as previously mentioned, the utility model is to link in pedestal that cross-over connection has an input and display circuit on the connection line of two USB joints, it can light light emitting diode when the data normal transmission, confirm to differentiate for the user, when the light emitting diode on the adapter does not work, represent that promptly adapter itself may break down, be not easy to use the person whereby and confirm the fault origination point as early as possible.

In sum, the utility model has really possessed preceding described every advantage, and comparing with existing USB conversion line possesses the remarkable efficacy enhancement, thus had practicality concurrently with creative, and meet the utility model patent important document, therefore file an application in accordance with the law.

Claims

1. the USB adapter that can show transmission state is to set up two USB joints on a pedestal separately, and two USB joints are to be respectively A, B form, and interconnect, thereby for the interface port form of changing the USB device; It is characterized in that:

2. the USB adapter that shows transmission state as claimed in claim 1, it is characterized in that, this input and display circuit are made up of a transistor AND gate one light emitting diode, and wherein transistor base is to see through a resistance to be connected across on the connection line data pin of corresponding two USB joints; Its collection utmost point is to connect light emitting diode, and sees through this light emitting diode, a resistance cross-over connection to connection line, the power pin on corresponding two USB joints; Its emitter-base bandgap grading then is connected on the connection line, the earth terminal of corresponding two USB joints.

3. the USB adapter that shows transmission state as claimed in claim 1 is characterized in that, the USB joint on this pedestal is USB BM (public affairs) formula, and another USB joint is USBAF (mother) formula.

4. as claim 1 or the 3 described USB adapters that show transmission state, it is characterized in that, this USB B formula joint is directly to be plugged to one first electronic installation, and this first electronic installation can be any in the products such as digital camera, mobile phone, personal digital assistant.

5. as claim 1 or the 3 described USB adapters that show transmission state, it is characterized in that this USB A formula joint is to supply directly to be plugged to a second electronic device, this second electronic device can be a flash memory.