JPH0832774A - Small-sized data terminal device with image input function - Google Patents

Abstract

PURPOSE:To facilitate pattern analysis by obtaining image data by an image sensor and detecting the movement of the device by the rotation of a roller. CONSTITUTION:A CCD image sensor 5 photoelectrically converts an image converged by a lens 5 and transfers accumulated signal charges by a CCD analog shift register. A waveform shaping circuit 6 shapes the waveform of the output of the CCD image sensor 5 at specific timing and converts the output into a digital signal. A timing detector 12 generates timing pulses by the rotation of the roller 11. An amplifier 12 amplifies the timing pulses and outputs the timing pulses to a control circuit 7. The control circuit 7 reads the linear image data digitized by the waveform shaping circuit 6 at intervals of a timing pulse, stores the data in a storage circuit 8, and generates timing pulses sequentially.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small and portable data terminal for reading a bar code printed on paper, reading, storing and displaying image data such as handwritten characters, and communicating with an external device. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, a device in which a CCD scanner for reading a bar code and a small data terminal device are integrated has been announced. An example of this structure is shown in FIG.

In the figure, 1 is a subject on which a barcode is printed, 2 is a light source for illuminating the surface of the subject 1, and 3 is a subject 1.
Mirrors 4 for reflecting the image (bar code) of 4 are lenses, and the images reflected by the mirror 3 are focused on the CCD image sensor 5. The CCD image sensor 5 transfers the signal charges photoelectrically converted and accumulated by the photodiode array by the CCD analog shift register and sequentially outputs them. A waveform shaping circuit 6 shapes the output of the CCD image sensor 5 at a predetermined timing and converts it into a digital signal. The digitized image data of the waveform shaping circuit 6 is stored in the storage circuit 8 via the control circuit 7. A timing pulse generation circuit 9 is activated by the control circuit 7 and generates various timing pulses for operating the CCD image sensor 5. Reference numeral 10 denotes a CCD drive circuit, which converts the timing pulse into a voltage for operating the CCD image sensor 5. The image data (bar code pattern) stored in the storage circuit 8 is analyzed by the control circuit 7 and converted into code data. The display circuit 11 displays the result processed by the control circuit 7. The input circuit 12 commands various operations of the apparatus, and the signal of the command is input to the control circuit 7. The code data and various kinds of information stored in the storage circuit 8 are output from the communication circuit 13 to the external device via the control circuit 7.

As described above, even the conventional small-sized data terminal device with a CCD scanner can read a one-dimensional image (bar code), digitize (duplicate), store, analyze, display, and output to an external device. did it.

The second conventional example is image data, and an example of this structure is shown in FIG. In the figure, 21 is a subject, 2
2 is a light source that illuminates the surface of the subject 21, 23 is a mirror that reflects the image from the subject 21, 24 is a lens for collecting the image, and 25 is a signal that photoelectrically converts the collected image and accumulates it. A CCD image sensor that transfers charges by a CCD analog shift register, and 26 is a waveform shaping circuit, which is C
The output from the CD image sensor 25 is waveform-shaped and converted into digital information. The digitized image data is output to the external device 27. A timing generation circuit 28 is activated by the external device 27 and generates various timings for operating the CCD image sensor 25. A CCD drive circuit 29 converts the timing pulse into a voltage and drives the CCD image sensor 25. Reference numeral 30 is a roller, which rotates when the device is moved (slipped). A timing detector 31 generates a timing pulse according to the rotation of the roller 30. An amplifier 32 amplifies the timing pulse and outputs the timing pulse to the external device 27. The external device 27 reads, stores, and controls the one-dimensional image data digitized from the subject 21 at each timing pulse.

As described above, the image reader of the second conventional example can read a two-dimensional image of a subject by moving the device, digitize (duplicate) it, and output it to an external device.

[0007]

However, the above-mentioned conventional small data terminal device with a CCD scanner has a drawback that it can handle only a one-dimensional image (bar code pattern).
In the image reader of the second conventional example, two-dimensional image data can be obtained by moving the device, but it has a drawback that it is difficult to operate because it is moved. Further, the part for controlling, storing and displaying the image data is located in an external device, which is difficult to handle.

The present invention is to solve the problems of the conventional example as described above. By moving the device, two-dimensional image data can be obtained, and further, a control unit, a display unit, a storage unit, an input unit, a communication unit. It is an object of the present invention to provide an excellent small data terminal device with an image input function that is easy to operate and portable because it has an integrated structure.

[0009]

In order to achieve the above object, the present invention provides an optical element comprising a mirror and a lens, a roller which is rotated by the movement of the device, and a timing detector which generates a timing pulse according to the rotation of the roller. A CCD image sensor, a control unit, a display unit, a storage unit, an input unit, and a communication unit are provided, and one-dimensional image data is stored in the storage unit for each timing pulse, and the timing pulses are sequentially generated. , Which can be stored as two-dimensional image data.

[0010]

Therefore, in the present invention, the apparatus can be moved to obtain two-dimensional image data, and since the data processing unit has an integrated structure, the operation is simple and portable. Furthermore, when the image data is a bar code pattern, it can be converted into code data by the analysis program of the control unit,
Since the barcode pattern is also two-dimensional information, pattern matching is easy and analysis is easy.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an embodiment of the present invention.

In the figure, 1 is a subject, 2 is a light source for illuminating a subject surface, 3 is a mirror for reflecting an image of the subject 1, 4 is a lens for condensing the image, and 5 is a CC.
The D image sensor photoelectrically converts the collected image, and the accumulated signal charges are transferred by the CCD analog shift register. The CCD elements are arranged one-dimensionally. A waveform shaping circuit 6 shapes the output of the CCD image sensor at a predetermined timing and converts it into a digital signal. 7
Is a control circuit for inputting the digitized image data. A storage circuit 8 stores image data. A timing pulse generation circuit 9 is activated by the control circuit 7 and generates various timing pulses for operating the CCD image sensor 5. Reference numeral 10 denotes a CCD drive circuit, which converts the timing pulse into a voltage for operating the CCD image sensor 5. A display circuit 14 displays the image data stored in the storage circuit 8 and the result of information processing such as calculation and retrieval by the control circuit 7. Reference numeral 15 is an input circuit, which commands various operations of the apparatus and is input to the control circuit 7. The image data and various information stored in the storage circuit 8 are output from the communication circuit 16 to an external device via the control circuit 7. 11 is a roller, which rotates when the device is moved 12
Is a timing detector, which generates a timing pulse by the rotation of the roller 11. An amplifier 13 amplifies the timing pulse and outputs the timing pulse to the control circuit 7. The control circuit 7 reads the one-dimensional image data digitized from the subject for each of the timing pulses, stores the digitized image data in the storage circuit 8, and sequentially generates the timing pulses, so that it can be stored as two-dimensional image data. It is a thing.

As described above, according to the above-described embodiment, two-dimensional image data can be obtained, and the entire structure including the data processing unit can be integrated, so that it is easy to handle and portable.

FIG. 2 shows the appearance and structure of one embodiment of the present invention. Reference numeral 21 is a subject, 22 is a mirror, 23 is a lens, 24 is a CCD image sensor, 25 is a display section, and 26 is a display section.
Is an input unit, 27 is a communication connector, 28 is a window plate for allowing an image of a subject to be viewed directly from above, and 29 is a roller that rotates when the apparatus is moved.

[0015]

The present invention has the following effects, as is apparent from the above-mentioned embodiments. (1) Two-dimensional image data can be obtained by moving the device, and the operation is easy. (2) The integrated structure including the data processing unit makes it easy to handle and portable. (3) Since it is two-dimensional image data, barcode pattern matching is easy and barcode pattern analysis is easy.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a small data terminal device with an image input function according to an embodiment of the present invention.

FIG. 2A is a front view showing an example of the appearance of the apparatus. FIG. 2B is a bottom view showing an example of the appearance of the apparatus. FIG. 2C is a side view showing the conceptual configuration of the optical system.

FIG. 3 is a block diagram of a conventional compact data terminal device with a CCD scanner.

FIG. 4 is a block diagram of a conventional image reader.

[Explanation of symbols]

 1 subject 2 light source 3 mirror 4 lens 5 CCD image sensor 6 waveform shaping circuit 7 control circuit 8 storage circuit 9 timing pulse generation circuit 10 CCD drive circuit 11 roller 12 timing detector 13 amplifier 14 display circuit 15 input circuit 16 communication circuit

Claims (1)

[Claims] 1. A CCD image sensor for inputting an image of a subject and performing photoelectric conversion, and a mirror provided between the CCD image sensor and the subject for reflecting the image of the subject and inputting the image to the CCD image sensor. And the above C
A timing generation circuit for operating a CD image sensor, a waveform shaping circuit for shaping the output signal of the sensor into a digital signal, a control circuit for inputting the digital signal, and the control circuit for controlling the A storage circuit for storing image data, a communication circuit for exchanging data with an external device, a display circuit for displaying a part or all of the stored image data, and an input circuit for inputting various information to the control circuit. And a roller that rotates by moving the device, a timing detector that generates a timing pulse according to the rotation of the roller, and the timing detector is input to the control unit, and the control unit digitizes the subject at each timing. The small-sized device with an image input function that has the function of reading the stored one-dimensional image data and storing it in the storage section. Data terminal equipment.