JP2674831B2 - Portable wireless device with display function - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a portable wireless device with a display function for displaying an individual number, a manufacturing number, etc. of a wireless device in a bar code on a message display section.

[Conventional technology]

The individual numbers, manufacturing numbers, etc. of the wireless devices in the conventionally used portable wireless devices with a display function (portable wireless, pager, pager, etc.) are displayed by attaching a label printed with a barcode.

[Problems to be solved by the invention]

However, the conventional portable wireless device with a display function has the following drawbacks.

1) Since the portable wireless device with a display function is required to be downsized, problems such as a small place to put a label and, in an extreme case, no place to put a label occur.

2) When the area to attach the label is small, the minimum bar width of the bar code can be narrowed to display the necessary bar code, but it can be read by the bar code reader that reads the bar code. There is a minimum bar width, and there is also a minimum bar width that can be printed by a bar code printer that prints a bar code, so there is a limit to reducing the size of the label.

3) When the label is attached to the surface of the device and carried and used for a long time, the label may be peeled off due to friction or the printed barcode may be erased.

4) The bar code is unreadable and unnecessary for the user who uses the portable wireless device with a display function.

5) Since the label occupies a part of the wireless device, the freedom of design of the wireless device is lost.

6) Bar code labels must be controlled at the time of manufacture.

An object of the present invention is to solve the above-mentioned problems and to provide a portable wireless device with a display function that displays a bar code on a display device that displays message information, individual information and the like.

[Means for solving the problem]

A portable wireless device with a display function for displaying unique information or message information of the present invention is a means for storing the unique information, a means for reading the unique information from the storage means, and a time axis for the read unique information. And a display driving unit that generates a display signal in response to the signal, and a display unit that temporally controls a bright / dark pattern of a predetermined portion by the display signal. ing. Further, the continuous signal on the time axis is a bar code signal corresponding to a bar code, and the time-varying pattern of the display unit may be equivalent to the bar code [Example] First, The concept of the present invention will be described.

On the LCD (Liquid Crystal Display), the electrodes corresponding to the bars having the smallest width that can be read by the bar code reader are arranged.

Here, the bar code is code 39 (AIM USD-3), and the width of the black or white wide bar is 2-3 of the width of the thin bar.
Since the character spacing is specified to be 1 to 9 times the width of the thin bar, the width of the wide bar is 3 times the width of the thin bar, the character spacing is 2 times the width of the thin bar, and the width of the electrode is thin. The width of the bar,
The electrodes are arranged at intervals smaller than the minimum reading width of the barcode reader. If the distance between the electrodes is narrower than the minimum reading width of the bar code reader, the bar code reader determines that the bar codes are continuous.

One of the information displayed by the bar code is a telephone number (ID number) of each portable wireless device with a display function, and this ID number is stored in a storage device such as a ROM of the portable wireless device with a display function. The ID number is read from this memory circuit, and a voltage is applied to the electrode on the LCD corresponding to the ID number to cause the liquid crystal to emit light and display a bar code.

The bar code display described above is shown in FIG. In the figure, the ID numbers are the station number 939 and the number 2316.

However, as shown in FIG. 2, the LCD requires many electrodes and many display areas to display many bar code characters.

Therefore, consider making the electrodes and display area to the minimum.

A bar code is a combination of wide bar, space, narrow bar, and space that represents characters and symbols. For the sake of explanation, FIG. 3 (A) shows a bar code representing "9" by the code 39 (AIM USD-3). This “9”
A bar code scanner or a pen scanner used as a bar code reader is used to read the bar code indicating the. The barcode scanner electronically scans from the left to the right to read the barcode. The pen scanner reads the barcode by manually scanning the barcode with a pen-type reader.

The bar code reader used in the present invention is mainly intended to use a pen scanner.

By the way, when the barcode is scanned and read, this signal is replaced with the signal on the time axis. If the black part of the bar code is the HI level of the signal and the white part is the LOW level, the bar code is considered to be the signal shown in FIG. 3 (B) as the time axis t. Assuming that the scanning speed of the bar code reader is a constant speed, v is the distance on the bar code, and t is the time to travel the distance x, the following equation holds: x = vt. . Here, if 1 / v = a ... (B), then t = ax ... (C), and the change in distance becomes a change in time, and becomes a linear function.

Therefore, for a wide and narrow bar code, black or white display may be displayed for a certain period of time instead of scanning.

That is, an electrode larger than the minimum reading width of the pen scanner is provided in the liquid crystal display part, and the wide and narrow of the barcode is indicated by the voltage application time to the electrode, and the black of the barcode indicates the liquid crystal by applying a voltage to the electrode. White light is displayed, and white light is displayed by applying no voltage to the electrodes and causing the liquid crystal to not emit light.

FIG. 1 shows a block diagram of an embodiment of a radio selective call receiver with a display function, which expresses the above-mentioned idea.

In the figure, the radio selective call receiver with display function includes an antenna 1, a radio unit 2, a signal function unit 3, a bar code signal generation unit 4,
The storage unit 5, the display drive unit 6, the display unit 7, and the switch unit 8 are included.

 Next, this operation will be described.

First, the signal received by the antenna 1 is amplified and demodulated by the wireless unit 2 to become a digital signal, which is sent to the signal processing unit 3 where the individual telephone number (ID) stored in the storage unit 5 is stored.
Number).

Next, if the received signal matches the stored ID number, the subsequent message signal is received, and the display driver 6
The message content is displayed on the display unit 7 via.

In order to display the contents stored in the storage unit 5, first, the signal processing unit 3 sends a signal for reading the data in the storage unit 5 to the storage unit 5 by a signal sent from the switch unit 8 as a switch means. . Next, the data in the storage unit 5 is
The signal is sent to the bar code signal generation unit 4 via the signal processing unit 3, where it is converted into a bar code signal and becomes a temporally continuous signal, which is converted into a display signal by the display drive unit 6 and drives the display unit 7. .

FIG. 4 shows a plan view of an embodiment of the display unit. In the figure, the display unit 7 made of liquid crystal provided in the device body 9
A barcode display portion 10 is provided at the right end of the. The size of the bar code display section 10 is sufficiently larger than the light receiving section of the bar code reader, but the light receiving section of the bar code reader reads about 0.1 to 0.2 mm, so it is very small. The size is a few mm square and is not large. An electrode is provided on this bar code display portion, and a voltage is applied to this electrode to cause the liquid crystal to emit light so as to turn black, or the liquid crystal is not inverted to black without applying a voltage. Controls the flip time. On the other hand, the display section 7 displays the contents displayed on the barcode display section 10. In this case, the ID number is 9392316. However, if the displayed contents cannot be easily understood, this part is not displayed.

FIG. 5 is a diagram showing the relationship between the size of the bar code reader light receiving part and the size of the bar code display part. The bar code reader light receiving area 11 is round or vertically elongated and is designed so as to be as small as possible, and the minimum reading width of the bar code reader is generally 0.1 to 0.2 mm. If the area larger than the minimum reading width is the size of the liquid crystal, the bar code reader can read the change, so the bar code display electrode 12 is sized to enclose the bar code reader light receiving area 11. . In this example, the electrodes of the bar code display section are rectangular, but any shape may be used as long as it covers the area 11 of the bar code reader light receiving section.

FIG. 6 shows the signal states of the main parts of this embodiment.
When “9” is stored in the storage unit 5 as a binary number, each box in the storage unit 5 indicates 1 bit of the storage unit and
It is stored as shown in FIG. By adding a read signal to the storage unit 5, the storage unit 5 outputs the signal shown in FIG.
The signal indicated by is obtained corresponding to the contents of the storage unit 5. This signal (B) is sent to the bar code signal generator 4 via the signal processing unit 3, converted according to the code format of the bar code, and output as FIG. 6 (C). This signal (C) is converted into a display signal by the display drive section 6 and sent to the display section 7. In the HI part of FIG. 6 (C), a voltage is applied to the bar code display electrode 14 of the display and the liquid crystal becomes black,
No voltage is applied to the LOW part, and the liquid crystal does not turn black.
In addition, the black state and the state that does not invert black changes depending on the length of time of HI and the length of time of LOW. The length of this time is proportional to the length determined by the barcode. That is,
The time of the wide part is determined to be 2 to 3 times as long as the time of the narrow part, and is shown as 3 times in the same figure. In this way, the bar code display as shown in FIG. 2 is equivalently obtained.

FIG. 7 is a copy diagram showing a bar code being read by a bar code reader while the bar code is being displayed. Conventionally, the pen-type bar code reader 13 is manually moved on the bar code label at a constant speed, but in the present invention, the bar code is read only by placing it on the bar code display section 10 as shown in FIG. You can

A switch for activating the bar code signal does not necessarily have to be newly provided externally, and a timer that starts up by activating the power supply circuit of the wireless device and counts a fixed time may be used. That is, it may be configured such that the bar code display is started when the power supply circuit of the device is contacted, the bar code display is performed for a certain period of time, and then the display is stopped. The means for activating / stopping the bar code display in this way can be realized by means of a function of a switch instead of a so-called switch.

The present invention can be similarly applied to other portable wireless devices with a display function for which the wireless selective call receiver with a display function has been shown in the embodiment.

〔The invention's effect〕

As described above, the present invention provides a barcode display unit in a part of the display unit, converts the contents of the storage unit into a barcode signal, and drives the barcode display unit to reduce the size of the portable wireless device. There is a big effect such as peeling off and dirt of the bar code label without worrying about the accuracy problem of the bar code reader or bar code printer and the place where the bar code label is attached. is there.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment in which the present invention is applied to a selective call receiver with a display function, FIG. 2 is a diagram showing a bar code on a display unit, and FIG. 3 is a basic concept of the present invention. 4 is a plan view of a display unit according to an embodiment of the present invention, FIG. 5 is a plan view showing the relationship between the size of the bar code display unit and the reading range of the bar code reader, FIG. FIG. 6 is a diagram used for explaining a signal form of a main part of the present invention, and FIG. 7 is a diagram explaining a use situation of one embodiment of the present invention. 1 ... Antenna, 2 ... Radio section, 3 ... Signal processing section, 4
…… Bar code signal generator, 5 …… Memory unit, 6 …… Display drive unit, 7 …… Display unit, 8 …… Switch unit, 9 …… Device body, 10 …… Bar code display unit, 11 …… Bar code reader Light receiving area, 12 ... Bar code display electrode, 13 ... Bar code reader.

Claims (2)

(57) [Claims] 1. A portable wireless device with a display function for displaying device-specific information and message information, means for storing the device-specific information, means for reading the device-specific information from the storage device, and the device-read-out device. Means for converting information into a continuous signal on the time axis, display driving means for generating a display signal in response to the signal, and display means for changing a light / dark pattern of a predetermined portion with time by the display signal And a portable wireless device with a display function. 2. A signal according to claim 1, wherein the signal is a bar code signal corresponding to a bar code, and the pattern which temporally changes on the display unit is equivalent to the bar code. A portable wireless device with the described display function.