JPH0512477A - Cordless pen scanner system - Google Patents

Abstract

PURPOSE:To improve workability and operability by increasing the degree of freedom for move without damaging the operability of a pen scanner part. CONSTITUTION:A pen scanner part A and a main body part B are separated, bar code data are read by a bar code read part 1 of the pen scanner part A, these bar data are modulated by an AM modulation part 2 and the modulated result is transmitted from a transmission part 3 by radio waves. At the modulated bar data reception part of the main body part B, the data transmitted from the transmission part 3 are received by a reception part 4, demodulated by a demodulation part 5, transmitted to a bar data analysis part 6 and analyzed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless pen scanner system, and more particularly to a cordless pen scanner system that uses modulated radio waves for bar data transmission.

[0002]

2. Description of the Related Art A conventional pen scanner system includes a pen scanner unit for reading a bar code and a main unit having a bar data analyzing unit for analyzing bar data read by the pen scanner unit. And were connected with a cable to transmit bar data.

Alternatively, there has been one in which the pen scanner unit and the main body unit are integrated.

[0004]

However, in this conventional pen scanner system, since the pen scanner section and the main body section having the data analysis section are connected by a cable, the pen scanner section can be freely moved. However, there is a problem in that the operator's workability is naturally limited because the degree of work is limited. In addition, if the pen scanner unit and the main body unit are integrated, the weight and shape of the unit become large,
Therefore, there is a problem that the operability of the operator is limited.

The present invention has been made in view of the above problems, and does not impair the operability of the pen scanner section.
An object of the present invention is to provide a pen scanner system in which the degree of freedom of movement is increased and the workability of an operator is improved.

[0006]

In order to achieve the above object, a pen scanner system of the present invention separates a pen scanner section for reading a bar code and a main body section for analyzing bar code data read by the pen scanner section. In addition to being provided, the barcode data read by the pen scanner unit is wirelessly transmitted to the main body unit.

Further, there is provided a cordless pen scanner system comprising a pen scanner section for reading a bar code and a main body section for analyzing the bar code data read by the pen scanner section separately, wherein the pen scanner section is a bar code. The main body section is transmitted from the transmitting section of the pen scanner section while the bar code reading section for reading the bar code, the modulating section for modulating the read bar data, and the transmitting section for transmitting the modulation result as a radio wave are transmitted. The modulation bar data receiving unit has a receiving unit that receives the transmission data and a demodulation unit that demodulates the reception data received by the receiving unit.

[0008]

According to the pen scanner system having the above structure, the pen scanner section and the main body section are separated, and the bar data is transmitted wirelessly. Therefore, it is possible to increase the degree of freedom in the workability and operability when the operator reads the barcode.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a cordless pen scanner system according to an embodiment of the present invention.

The cordless pen scanner system according to the embodiment of the present invention includes a pen scanner section A and a main body section B which are separated from each other. The pen scanning unit A includes a bar code reading unit 1 that optically reads a bar code, a modulation unit 2 that modulates the read bar data, and a transmission unit 3 that sends the modulation result as radio waves. In this embodiment, the modulation method of the modulator 2 is amplitude modulation (AM modulation).
Are using.

On the other hand, the main body section B comprises a modulated bar data receiving section having a receiving section 4 for receiving the transmission data from the transmitting section 3 and a demodulating section 5 for demodulating the received data. Further, the main body unit B includes a bar data analysis unit that analyzes the bar data demodulated by the demodulation unit 5.

Next, the cordless pen scanner system will be described more specifically together with its operation. First,
In the pen scanner unit A, the barcode reading unit 1 reads the barcode. Specifically, the reflection type photosensor reads the difference in reflectance when the LED light at the tip of the pen scanner unit is reflected by the black and white bars, and converts it into voltage amplitude data.

The amplitude of this voltage is AM-modulated by the AM modulator 2. The AM modulator 2 is composed of the following two blocks. First, the first block is a carrier wave generator,
This is a part that creates a fundamental wave (carrier wave) for AM modulation. Next, the second block is a unit for obtaining a modulation waveform by multiplying the voltage amplitude data obtained by the barcode reading unit 1 and the carrier wave generated by the first block.
The actual movement of the modulator 2 is a simple one in which the amplitude of the AC waveform, which is a carrier wave, is changed based on the amplitude data of the voltage obtained by the barcode reader 1.
It can be realized with several parts such as a transistor.

The transmitting section 3 sends the above-mentioned modulated waveform as a radio wave, but the cordless pen scanner section A
By limiting the distance of the main body B having the modulation bar data receiving section to several meters, it is possible to use a simple antenna such as an inductor.

The transmitted weak modulated wave is transmitted to the main body B.
The signal is received by the receiving section 4 and is demodulated by the demodulating section 5, which is the reverse operation to the above and can be similarly realized with a simple configuration.

This demodulation result almost faithfully reproduces the amplitude of the voltage at the time of reading the bar code, and then sends this to the bar data analysis section for analysis in the same manner as the conventional pen scanner system. To do.

In this embodiment, amplitude modulation is used as the modulation method, but the cordless pen scanner system can be realized by other modulation methods such as frequency modulation and phase modulation. However, in this cordless pen scanner system, the point is to reduce the size and weight of the pen scanner section rather than the condition of long distance and high speed transmission. In this case, the AM modulation is a simple and most suitable modulation method.

[0018]

As described above, according to the cordless pen scanner system of the present invention, by transmitting the read bar data as radio waves, it is possible to realize a cordless system with the main body for analyzing the bar data. It is possible to increase the degree of freedom of movement of the scanner unit, improve the workability when an operator reads a bar code, and have an effect that the layout of the pen scanner unit and the main body unit can be freely set.

[Brief description of drawings]

FIG. 1 is a block diagram showing a cordless pen scanner system according to an embodiment of the present invention.

[Explanation of symbols]

A Pen scanner section B body 1 Bar code reader 2 AM modulator 3 transmitter 4 Receiver 5 Demodulator

Claims (2)

[Claims] 1. A pen scanner unit for reading a bar code and a main body unit for analyzing the bar code data read by the pen scanner unit are separately provided, and the bar code data read by the pen scanner unit is wirelessly main body. A cordless pen scanner system characterized by transmitting to a department. 2. A cordless pen scanner system comprising a pen scanner unit for reading a bar code and a main body unit for analyzing bar code data read by the pen scanner unit separately, wherein the pen scanner unit is a bar code. Has a bar code reading unit for reading, a modulation unit for modulating the read bar data, and a transmission unit for transmitting the modulation result as a radio wave, while the main body unit transmits from the transmission unit of the pen scanner unit. A cordless pen scanner system comprising: a modulation bar data receiving unit having a receiving unit for receiving the transmitted transmission data and a demodulation unit for demodulating the reception data received by the receiving unit.