CN2609064Y - Business card scanner and its transmission module - Google Patents

Abstract

A business card scanner has a scanning module, a USB detecting and switching circuit and two USB connection ports. The name card scanner can be connected to a computer and a PDA through USB connection ports respectively or simultaneously, and the data transmission among the scanning module, the computer and the PDA is switched by the USB detection and switching circuit.

Description

Business card scanner and its transmission module

technical field

The utility model relates to a business card scanner, in particular to a business card scanner and its transmission module which can be used for computers and personal digital assistants (PDAs) at the same time, so as to achieve mutual transmission of computer and PDA files and relatively flexible use.

Background technique

A business card scanner is a relatively small scanner that can scan a business card into a graphic file, and then transmit the graphic file to a computer through a transmission port such as a Universal Serial Bus (USB) port. The computer can use character recognition software (OCR) to recognize the keywords in the business card, such as name, title, address, email, etc., so the text can be extracted from the image, and then stored in the email address book, such as MS Outlook's address book. Commonly used business cards can be converted into useful electronic materials through the business card scanner, which is extremely useful for busy modern people.

The first figure is a system block diagram of a conventional business card scanner 10 . The business card scanner 10 includes a scanner controller 100 , a paper feed sensor 102 , a motor controller 104 , a contact image sensor (CIS) 106 and a USB port 206 . When the paper feed sensor 102 senses that a business card is loaded into the paper feed slot of the business card scanner 10, it will notify the scanner controller 100 to drive the motor controller 104 to roll in the business card, and activate the contact image sensor (CIS) 106 Scan business card images. The image of the scanned business card is stored in the scanner controller 100 first, and then sent to an external device such as a computer through the USB port 206 .

However, due to the popularity of portable electronic devices such as PDAs, users (especially business people) are used to storing address books including names, titles, addresses, and e-mails in PDAs, and then synchronizing and transferring data to and from PDAs with software such as ActiveSync. The information is updated synchronously with the computer information. However, the known business card scanner only has a single USB port, which is inconvenient to use. Furthermore, the business card scanner usually uses the power of the computer or PDA through the USB port. Since the business card scanner consumes a certain amount of power, it is not very convenient for PDA users.

Utility model content

Therefore, the first object of the present invention is to provide a business card scanner and its transmission module that can connect two external devices and provide flexible data transmission options.

The second purpose of the utility model is to provide a business card scanner capable of charging a PDA and its transmission module.

In order to achieve the above object, the business card scanner provided by the utility model can be connected to a computer and a PDA through the USB connection port respectively or simultaneously, and the data transmission between the scanning module, the computer and the PDA is switched by the USB detection and switching circuit, The business card scanner has a socket for external power supply to provide PDA charging function.

The business card scanner has a scanning module and a transmission module, the transmission module can be respectively connected to a first universal serial bus connection port and a second universal serial bus connection port of two external devices, and electrically connected to the scanning A detection and switching circuit between the module and two universal serial bus connection ports.

When one of the two external devices is electrically connected to the business card scanner, the detection and switching circuit can establish data transmission between the scanning module and the electrically connected external device; when two external devices are simultaneously electrically connected to the business card scanner, the detection and switching circuit The circuit can selectively perform a data mutual transmission mode or at least one data transmission mode.

The above two external devices can be a computer and a personal digital assistant (PDA), and the computer is connected to the first USB connection port and the personal digital assistant (PDA) is connected to the second USB connection port.

The detecting and switching circuit can use the power pin states of the first USB connection port and the second USB connection port to judge the connection status of the computer and the personal digital assistant (PDA).

The business card scanner also includes a switch, which is electrically connected to the detection and switching circuit; when two external devices are electrically connected to the business card scanner at the same time, the detection and switching circuit can be controlled by the switch to perform a data exchange mode or at least one data transfer mode. The data mutual transmission mode is data mutual transmission between a computer and a personal digital assistant (PDA). The default transmission mode is data transmission between the personal digital assistant (PDA) and the scanning module.

The second USB connection port of the business card scanner is provided with a socket so that the personal digital assistant (PDA) can be connected to an external power supply for charging.

The utility model also provides a transmission module for a business card scanner, which can connect the business card scanner to at least one of the two external devices at the same time, and control the data transmission between a scanning module of the business card scanner and the external device, It includes:

Respectively connected to a first universal serial bus connection port and a second universal serial bus connection port of two external devices; connected to the detection and switching circuit between the scanning module and the two universal serial bus connection ports; when two external When one of the devices is electrically connected to the business card scanner, the detection and switching circuit can establish data transmission between the scanning module and the electrically connected external device; when both external devices are electrically connected to the business card scanner, the detection and switching circuit is optional Perform a data mutual transmission mode or at least one data transmission mode.

The above-mentioned transmission module also includes a switch, which is electrically connected to the detection and switching circuit; when two external devices are electrically connected to the business card scanner at the same time, the detection and switching circuit can be controlled by the switch to perform a data mutual transmission mode Or at least one data transfer mode.

The two external devices connected to the transmission module can be a computer and a personal digital assistant (PDA), and the computer is connected to the first USB connection port and the personal digital assistant (PDA) is connected to the second USB connection port.

The detecting and switching circuit judges the connection state of the computer and the personal digital assistant (PDA) by using the power pin states of the first USB connection port and the second USB connection port.

Its data mutual transmission mode is data mutual transmission between computer and personal digital assistant (PDA); data transmission between personal digital assistant (PDA) and scanning module; data transmission between computer and scanning module.

The second USB connection port of the transmission module is provided with a socket so that the personal digital assistant (PDA) can be connected to an external power supply for charging.

In order to achieve the above-mentioned effects of the present proposal, description will be made in conjunction with the following preferred specific embodiments and accompanying drawings.

Description of drawings

Fig. 1 is a block diagram of known technology;

Fig. 2 is a block diagram of the utility model;

Fig. 3 is a schematic diagram of detection and switching circuits of the present invention;

Fig. 4 is a circuit diagram of the detection and switching circuit of the present invention.

Wherein, the reference signs are explained as follows:

100 business card scanner controller

102 Feed sensor

104 Motor controller

106 Contact image sensor

108 power regulator

110 booster circuit

200 USB detection and switching circuit

202 First USB port

204 Second USB port

206 USB ports

Detailed ways

Referring to Fig. 2, it is a functional block diagram of the present utility model. The utility model is a card scanner, which includes a card scanner controller 100, a paper feed sensor 102, a motor controller 104, a contact image sensor 106, a power regulator 108, a boost circuit 110, A USB detection and switching circuit 200 , a first USB connection port 202 and a second USB connection port 204 . The focus of the present invention is to provide a USB detection and switching circuit 200 and two sets of USB connection ports 202 and 204 in the business card scanning device. As shown in this figure, the business card scanner of the present invention can be connected to a computer via the first USB connection port 202 and to a PDA via the second USB connection port 204 . The USB detection and switching circuit 200 of the present utility model can judge the connection state of the first USB connection port 202 and the second USB connection port 204, that is, judge whether there is an external device, and the USB detection and switching circuit 200 has a switching switch SW, so that When both the first USB connection port 202 and the second USB connection port 204 have external devices, the operation mode is switched.

Referring to FIG. 3 , it is a schematic diagram of the USB detection and switching circuit 200 of the business card scanner of the present invention, showing the circuit connection status of the USB detection and switching circuit 200 . The USB detection and switching circuit 200 is connected to the image data signal pins BCRD ⁺ and BCR D ⁻ sent from the business card scanner controller 100, and connected to the data signal sent from the first USB connection port 202 (connected to the computer by default). The pins NB D ⁺ and NB D ^- , and the power signal pin NB_PLUG, and the data signal pins PDA D ⁺ and PDA D ^- connected to the second USB connection port 204 (connected to the PDA by default), and the power Signal pin PDA_PLUG. Furthermore, the USB detection and switching circuit 200 has a pin connected to a switch SW1. The USB detection and switching circuit 200 knows whether there is a computer and/or PDA connected to the business card scanner by detecting the signal states of the power signal pin NB_PLUG and the power signal pin PDA_PLUG.

If one of the computer and the PDA is connected to the business card scanner, the USB detection and switching circuit 200 can judge the signal states of the power signal pin NB_PLUG and the power signal pin PDA_PLUG, and provide image data signal pins BCR D ⁺ and BCR The connection between D ^- and the computer data signal pins NB D ⁺ and NB D ^- , or between the image data signal pins BCR D ⁺ and BCR D ^- and the PDA data signal pins PDA D ⁺ and PDA D ^- Connection.

If both the computer and the PDA are connected to the business card scanner, the USB detection and switching circuit 200 can be controlled by the switch SW1 to operate in one of the following two modes:

(1). Data synchronization mode (Active Sync): USB detection and switching circuit 200 can provide connection between computer data signal pins NB D ⁺ and NB D ^- and PDA data signal pins PDA D ⁺ and PDA D ^- , to achieve synchronous transmission of data between the computer and the PDA.

(2) PDA transmission mode: the utility model is based on the PDA as the default host (Host), so when both the computer and the PDA are connected to the business card scanner, the USB detection and switching circuit 200 can be controlled by the switch SW1 , and provide the connection between the image data signal pins BCR D ⁺ and BCR D ^- and the PDA data signal pins PDA D ⁺ and PDA D ^- .

The above operations can be represented by the following Table 1:

Table I PDA computer Toggle switch SW1 data flow data synchronization PDA transmission V N x x Business Card Scanner→PDA N V x x Business Card Scanner→NB V V V N PDA ← → computer V V N V Business Card Scanner→PDA

V: exists

N: does not exist

×: no effect

Referring to Fig. 4, it is the detection of the utility model and the switching circuit circuit diagram, in the concrete example of the utility model, is to use four analog switches, and is controlled by the signal state of the power signal pin NB_PLUG and the power signal pin PDA PLUG , and switch the connection status between the image data signal pins BCR D ⁺ and BCR D ⁻ , the computer data signal pins NB D ⁺ and NB D ⁻ and the PDA data signal pins PDA D ⁺ and PDA D ⁻ . The switch SW1 can switch the connection state of the PDA data signal pins PDA D ⁺ and PDA ^D- , so as to provide a data synchronization mode (Active Sync) when both the first USB connection port 202 and the second USB connection port 204 have external devices. ) or PDA transfer mode.

Furthermore, in the utility model, a socket (not shown) can also be set on the second USB connection port 204, which can be connected to an external power supply to provide a PDA charging function, and can cooperate with the original power supply of the business card scanner to stabilize The voltage converter 108 and the boost circuit 110 provide more stable power for the business card scanner.

In summary, the business card scanner provided by the utility model can be connected to two external devices, and can selectively switch the transmission function, and can also provide the PDA charging function, which is really a rare creation, but the utility model The scope of the invention is not limited to the content described in the aforementioned preferred specific embodiments. For those of ordinary skill in the art, according to the spirit and concept of the creation, various corresponding changes and modifications should be included in the present invention. in the new category.

Claims (8)

1. A business card scanner, comprising: A scanning module and a transmission module, characterized in that: The transmission module has a first universal serial bus connection port and a second universal serial bus connection port which can be respectively connected to two external devices, and is electrically connected to the scanning module and the two universal serial bus connection ports Between detection and switching circuits. 2. The business card scanner as claimed in claim 1, wherein the two external devices are a computer and a personal digital assistant, and the computer is connected to the first USB connection port, and the A personal digital assistant is connected to the second USB connection port. 3. The business card scanner as claimed in claim 1, further comprising a switch, the switch is electrically connected to the detection and switching circuit. 4. The business card scanner as claimed in claim 2, wherein the second USB connection port is provided with a socket. 5. A transmission module for a business card scanner, characterized in that it comprises: respectively connected to a first universal serial bus connection port and a second universal serial bus connection port of the two external devices; And a detection and switching circuit connected between the scanning module and the two universal serial bus connection ports. 6. The transmission module according to claim 5, further comprising a switch, the switch being electrically connected to the detection and switching circuit. 7. The transmission module as claimed in claim 5, wherein the two external devices are a computer and a personal digital assistant, and the computer is connected to the first Universal Serial Bus connection port, and the personal digital assistant A digital assistant is connected to the second USB connection port. 8. The transmission module according to claim 7, wherein the second USB connection port is provided with a socket.

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