JP2532685B2 - Small data terminal device with image input function - Google Patents

Description

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

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 configuration is shown in FIG. In FIG. 3, 1 is a subject on which a barcode is printed, 2 is a light source for illuminating the subject surface, and 3 is a light source.
Is a mirror that reflects an image (bar code) from a subject, and 4 is a lens, and the image reflected from the mirror 3 is focused on the CCD image sensor 5. The CCD image sensor 5 uses the photodiode array to photoelectrically convert and accumulate the accumulated signal charges in the CCD.
Transferred by the analog shift register and output sequentially. A waveform shaping circuit 6 shapes the output from 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 to operate 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 device and 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 above-mentioned conventional compact data terminal device with a CCD scanner can read a one-dimensional image (bar code), digitize it (binarize it), store it, analyze it, display it, and output it to an external device. .

The second conventional example is an image reader, and an example of this configuration is shown in FIG. In FIG. 4, 21 is a subject, 22 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 focusing the image, and 25 is the focused light. The image is photoelectrically converted and the accumulated signal charge is
A CCD image sensor transferred by the CCD analog shift register, and 26 is a waveform shaping circuit for shaping the output from the CCD image sensor 25 and converting it 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. Reference numeral 29 denotes a CCD drive circuit, which converts the timing pulse into a voltage and outputs the CCD image sensor
Drive 5 30 is a roller, which rotates when the device is moved (slipped). A timing detector 31 generates a timing pulse in accordance with 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 it (binarize it), and output it to an external device.

However, the conventional small-sized data terminal device with a CCD scanner described above has a drawback that it can handle only one-dimensional images (bar code patterns). 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 solves the problems of the conventional example as described above, and two-dimensional image data can be obtained without moving the device, and the control unit, the display unit, the storage unit, the input unit, and the communication unit are further provided. It is an object of the present invention to provide an excellent small data terminal device with an image input function which is easy to operate and portable because it has an integrated structure.

Means for Solving the Problems To achieve the above object, the present invention provides an optical element including a mirror and a lens, a timing detector that rotates the mirror and generates a timing pulse, a CCD image sensor, a control unit, a display unit, and a memory. A 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 timing pulses are sequentially generated to be stored as two-dimensional image data. It was made possible.

Therefore, in the present invention, two-dimensional image data can be obtained without moving the apparatus, and since the data processing unit has an integrated structure, the operation is simple and portable. further,
When the image data is a bar code pattern, it can be converted into code data by an analysis program of the control unit, and the bar code pattern is also two-dimensional information, so that pattern matching is easy and analysis is easy.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention.

In the figure, 1 is a subject, 2 is a light source that illuminates the subject surface, 3 is a mirror for reflecting an image from the subject 1, 4
Is a lens for condensing the image, 5 is a CCD image sensor, photoelectrically converts the condensed image, and transfers the accumulated signal charge by a CCD analog shift register. This C
The CD 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,
Input 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. 10 is a CCD drive circuit, which is a CCD image sensor 5
The voltage of the timing pulse is converted in order to operate. A display circuit 15 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 16 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 transferred to the communication circuit 17 via the control circuit 7.
Output to an external device. Reference numeral 11 is a stepping motor, which rotates under the control of the control circuit 7. Reference numeral 12 denotes a gear, which reduces the rotation of the stepping motor 11. Furthermore, the gear 12 rotates the mirror 3. 13 is a timing detector,
A timing pulse is generated according to the rotation of the gear 12. 14
Is an amplifier that 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, and stores it in the storage circuit 8.
Since the timing pulses are sequentially generated, the two-dimensional image data can be stored.

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 formed into an integrated structure, so that it is easy to handle and portable.

FIG. 2 shows the appearance and structure of one embodiment of the present invention, in which 21 is a subject, 22 is a mirror, 23 is a lens, 24 is a CCD area image sensor, 25 is a display section, 26 is an input section, 27. Is a communication connector, and 28 is a window plate for allowing the image of the subject to be viewed directly from above.

EFFECTS OF THE INVENTION The present invention has the following effects, as is apparent from the above-described embodiments.

(1) Since the CCD image sensor captures the image of the subject in synchronization with the rotation of the mirror and stores it each time a timing pulse is generated, the device can be moved even if the CCD image sensor is arranged in one dimension. It is possible to obtain two-dimensional image data without moving the subject.

(2) In addition, even if the CCD image sensor is arranged in one dimension, it is possible to obtain two-dimensional image data without moving the subject by rollers or the like, which makes it possible to achieve compactness, and thus input. A circuit, a display device, a communication circuit, and the like can be integrated.

(3) Furthermore, since it is two-dimensional image data, pattern matching such as bar code can be easily performed, and the barcode pattern analysis can be facilitated.

[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. 2 (A) is a front view showing an example of the appearance of the same device, and FIG. FIG. 1C is a side view showing the conceptual configuration of the optical system, FIG. 3 is a block diagram of a conventional small data terminal device with a CCD scanner, and FIG. 4 is a block diagram of a conventional image reader. . 1 ... Subject, 2 ... Light source, 3 ... Mirror, 4 ... Lens,
5 ... CCD image sensor, 6 ... Waveform shaping circuit, 7 ...
Control circuit, 8 Memory circuit, 9 Timing pulse generation circuit, 10 CCD drive circuit, 11 Stepping motor, 12 Gear, 13 Timing detector, 14
… Amplifier, 15 …… Display circuit, 16 …… Input circuit, 17 …… Communication circuit.

Claims (1)

(57) [Claims] 1. A mirror that reflects an image of a subject, a stepping motor that rotates the mirror with respect to the subject, and generates a first timing pulse signal in accordance with the rotation, and an image of the subject is captured through the mirror. When the CCD image sensor and the second timing pulse signal are received, the above CCD is received.
A CCD drive circuit that operates the image sensor, a waveform shaping circuit that waveform-shapes the image captured by the CCD image sensor when the second timing pulse signal is received, and converts the image into digital information, and receives the first timing pulse. Small data with an image input function, including a control circuit that outputs a second timing pulse to the CCD drive circuit and the waveform shaping circuit for each time, and stores the image digitized by the waveform shaping circuit in a storage circuit Terminal device.