JP2508569Y2 - Image data reader having communication function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image data reading device having a communication function capable of receiving data from a small electronic device such as an electronic notebook.

[Prior Art and Problems Thereof] Recently, an image image reading device such as a handy scanner or a handy copy having a memory function inside has been considered. However, in such a device, in addition to the image image reading function, A device having a function of receiving data transmitted from an external device such as an electronic notebook is also considered.

That is, in a handy scanner or a handy copy device having a communication function with an external device, a function key for communication with the external device is additionally provided, but the case itself is manually scanned for reading image data. Since it is performed by the method described above, it is difficult to hold the housing, which is apt to cause an erroneous operation, and impairs downsizing.

[Purpose of the invention] The present invention has been made in view of the above-mentioned problems.
An object of the present invention is to provide an image data reading device having a communication function that enables data from an external device to be received without providing a function key dedicated to communication.

[Points of the Invention] That is, an image data reading device having a communication function according to the present invention includes a moving amount detecting means for outputting a moving amount detecting signal according to the movement of the apparatus body, and a moving amount output from the moving amount detecting means. A reading unit that reads the image data on the document in synchronization with the amount detection signal, a receiving unit that receives the data transmitted from the external device, and an external unit that outputs a detection signal when the receiving unit receives the data from the external device. Input / detection means, storage means for storing data obtained from the reading means and the receiving means, and read / communication for operating the reading means and operating the receiving means by operating one key switch. When the read / communication mode is set by the operation mode setting means for setting the mode and the operation mode setting means, When the detection signal is output from the stage, the data received from the external device from the external device is written to the storage device, the detection signal is not output from the external input detection device, and the movement amount detection device is And a writing means for writing the image data read by the reading means into the storage means when a movement amount detection signal is output from the reading means, and the image data is read by operating one key switch. By simultaneously setting two operation modes, that is, reception mode and reception of external data, the external reception data is written to the storage means and the detection signal is detected from the external input detection means when the detection signal is output from the external input detection means. Is not output and the movement amount detection signal is output from the movement amount detection means, the read image data is written to the storage means automatically. It is obtained by configured to be controlled.

Embodiment of the Invention One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an electronic circuit of a handy copy machine which implements an image data reading apparatus having a communication function according to the present invention. This handy copy machine has a vertically long size large enough to be held by a user's hand. The casing is a main body, and the image reading unit 10 is arranged at one end in the longitudinal direction of the casing and the printing unit 11 is arranged at the other end. The image reading unit 10 is illuminated by an LED 13 in synchronization with a reading encoder 12 that detects the amount of movement of the main body of the copy machine on the original A surface, and a movement amount detection signal (encoder pulse) from the encoder 12. A CCD image sensor 14 for optically reading image data on the surface of the document A is provided. Further, in the printing unit 11, similarly to the above, the print encoder 15 for detecting the movement amount on the recording paper B side of the copying machine main body, and the movement amount detection signal (encoder pulse) from the encoder 15 are synchronized with each other. A thermal head 16 for thermally transferring and printing the image data read by the reading unit 10 on the recording paper B is provided.

The key input section on the side of the copying machine is equipped with a read / communication key 17 operated when reading image data or receiving data from an external device, and a print key 18 operated when printing data. Then, the control unit 19 controls the operation of each unit of the circuit according to the key operation signal.

The image sensor 14 is driven by an image sensor driving section 20 to which a control signal is given from a control section 19 in accordance with the encoder pulse from the reading encoder 12, and the original A
The image data of the surface is read as an optical image, and the image signal converted into an electric signal by the image sensor 14 is
It is converted into a binary digital signal of black and white according to the brightness of the optical image through the binarization unit 21, and through the selector 22 the control unit 19
And are sequentially stored in the memory 23. A serial transceiver 24 is connected to the selector 22.

The serial transceiver 24 has a TX (transmission) terminal, an RX (reception) terminal, and a GND (ground) terminal that are connected to an external device such as an electronic notebook, and receives image data transmitted from the external device. The received data is given to the control unit 19 through the selector 22 and sequentially stored in the memory 23. When image data is received from an external device through the RX terminal of the serial transmission / reception unit 24, the reception start state is detected by the external signal input detection unit 25, and the external input detection signal from the external signal input detection unit 25 is , And to the AND gate AND1 via the inverter INV.

Here, the AND gate AND1 provides an encoder pulse from the reading encoder 12 to the control unit 19 when the external signal input detection unit 25 does not output the external input detection signal in the operation state of the read / communication key 17, In this case, the control unit 19 outputs a secret signal for switching the selector 22 to the binarization unit 21 side, and writes the image signal read by the image sensor 14 in the memory 23.

Further, the AND gate AND1 prohibits the supply of the encoder pulse to the control unit 19 when the external input detection signal is output from the external signal input detection unit 25 in the operation state of the read / communication key 17. If the control unit
19 outputs a select signal for switching the selector 22 to the side of the serial transmission / reception section 24, and causes the image data received from the external device to be written in the memory 23. In this case, the LED 13 is turned off, the control signal is not given to the image sensor driving unit 20, and the image data reading operation by the image sensor 14 is stopped.

FIG. 2 shows the contents of data received by the serial transceiver 24 from the external device. The data from the external device is 1 byte for the control code, 1 byte for the command, 2 bytes for the number of data, and 2 bytes for the data. n bytes and 1 byte are allocated to the checksum. First, the control code is a code for confirming the state of the transmission / reception partner, and in this case, the control code is given a text start code indicating the start of transmission from the external device. Also, the command is a control signal for data transmission,
In this case, the command is given a data control signal such as memory clear or data line feed. The number of data indicates how many bytes of data to be transmitted subsequently. Here, for example, when the external device is a handy word processor, previously input character data is given as patterned image data. Further, the checksum is for verifying whether or not the transmission data from the command to the data has been correctly received.

On the other hand, the thermal head 16 is driven by the head driver 26 in synchronization with the encoder pulse output from the print encoder 15, and when the print key 18 is operated and the encoder pulse is given to the control unit 19, the control unit Reference numeral 19 sequentially transfers the image data stored in the memory 23 to the head driver 26, and the thermal head 16 transfers the recording paper B.
Thermal transfer output.

Next, the operation of the handy copy machine having the above configuration will be described.

The read / communication key 17 is used to read image data on the A side of the document or receive data from an external device.
When is operated, the control unit 19 is set to the read / communication mode.

FIG. 3 is a flow chart showing the data processing in the read / communication mode. First, when the control unit 19 is set in the read / communication mode, the control unit 19 sends a control signal to the image sensor driving unit 20. Operate 14 (step S1). Here, in order to read the above-mentioned image data, the reading unit 10 of the copy machine main body is set to the original A.
When it is brought into contact with the surface and moved, the encoder pulse from the reading encoder 12 is passed through the AND gate AND1 to the control unit 19
(Steps S2, S3). Then, the control unit 19
The LED 13 is turned on to illuminate the area to be read on the surface of the original A, and the image data read from the image sensor 14 through the binarization unit 21 and the selector 22 is sequentially stored in the memory 23 in synchronization with the encoder pulse. It is stored (steps S4, S5). In this case, the image data reading process is repeated unless the storage capacity of the memory 23 is exceeded (steps S2 to S6). When the image data read amount exceeds the memory capacity, the image data read operation is stopped after the "memory capacity over" warning process (step S6).

On the other hand, when the control unit 19 is set to the read / communication mode and the image sensor 14 is operated by the image sensor driving unit 20, the external device is serially transmitted / received to receive the data transmitted from the external device. When the data transmission from the external device is started by connecting to the unit 24, the external signal input detection unit 25 detects the data reception state from the external device (steps S2 and S3). Then, the supply of the encoder pulse to the control unit 19 is prohibited, and the control unit 19 controls the image sensor driving unit 20 to stop the optical image reading operation by the image sensor 14 (step S7).

Here, the data received by the serial transmission / reception unit 23 is sent to the control unit 19 via the selector 22, but first, when the “text start code” is received as the control code, the control code is followed by the following. Then, data processing is performed according to the command received (steps S8 to S10). Then, the number of data is received, and the image data following this is sequentially written in the memory 23 (steps S11, S12). In this case, the write processing of the received data will be repeated as long as the storage capacity of the memory 23 is not exceeded and the check of the checksum is normally performed between the send data and the receive data. (Steps S9 ~ S1
Four). When the write amount of received data exceeds the above memory capacity, the "reception impossible code" is displayed in the serial transmission / reception section 24.
Is transmitted to the external device via the TX terminal of the device, and the data receiving operation from the external device is stopped (steps S13 → S15). Meanwhile, in step S8, the control code “text start” is received and the data from the external device is received. If the command code following the control code is not normally received when the receiving operation is started, the serial transmitter / receiver 24
The “error signal” is transmitted via the TX terminal of the external device, and the external device starts the data transmission process from the control code “text start” again (steps S8, S9 → S16). Further, in step S14, even when the data collation by the checksum transmission cannot be obtained, the “error signal” is transmitted to the external device, and the external device starts the data transmission process from the control code again, as described above. (Steps S8 to S14 → S16).

Then, by repeating the above steps S8 to S14, the data receiving operation from the external device is performed, and after the checksum collating process, if a new control code is not received, the control unit 19 receives the external data according to the receiving state. It is determined whether or not the data transfer from the device is completed (steps S8 → S17). Here, when it is determined that the data transfer is completed, the “reception confirmation code” is transmitted to the external device, the data transmission state in the external device is released, and the external signal input detection unit 25 detects the external data. When the reception state is no longer detected, the control unit 19 restarts the operation of the image sensor 14 and sets the handy copy machine to the image data readable state (steps S17, S18 → S1).

Thus, in order to print the data written in the memory 23 by reading the image data or receiving the external data, first, the print key 18 is operated to set the control unit 19 to the print mode.

Here, the copying machine body is connected to the printing section 11 of the recording paper B.
When the print encoder 15 is brought into contact with the surface and moved, an encoder pulse is output from the print encoder 15 to the control unit 19. Then, the control unit 19 sequentially reads the image data stored in the memory 23 in synchronization with the encoder pulse input from the print encoder 15 and transfers the image data to the head driver 26, and at the same time, the thermal head 16 through the head driver 26. To work. As a result, the thermal transfer printing process is performed on the recording paper B, and the image data stored in the memory 23 is printed.

Therefore, according to the handy copy machine having the above configuration,
In the read / communication mode, when the operation of receiving the data transmitted from the external device via the serial transmission / reception unit 24 is started, the reception start state of the external data is detected by the external signal input detection unit 25, and the image sensor 14 Since the operation is stopped and the data received by the serial transmission / reception unit 24 is preferentially written in the memory 23, a key dedicated to communication with an external device is not required, and the image data read mode and the external data are not required. It is possible to automatically switch between the reception mode and.

As described above, according to the present invention, by operating one key switch, two operation modes of reading image data and receiving external data are set at the same time.
Since the device automatically detects the actual operation of reading or receiving and controls according to the operation, the user can
It is not necessary to distinguish the operation mode of reading or receiving by only operating the individual key switches, the operation is simplified, and the inconvenience of operation error can be eliminated. Further, since it is not necessary to separately provide a dedicated function key for setting the respective read and receive operation modes, the number of parts of the apparatus can be reduced and the apparatus structure can be simplified.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic circuit of a handy copy machine according to an embodiment of an image data reading apparatus having a communication function of the present invention, and FIG. 2 is data received from an external device in the handy copy machine. A diagram showing the contents of
FIG. 3 is a flowchart showing an image data reading operation and an external data receiving operation in the read / communication mode of the handy copy machine. 10 …… reading unit, 11 …… printing unit, 12 …… reading encoder, 13 …… LED, 14 …… CCD image sensor, 15 ……
Print encoder, 16 ... Thermal head, 17 ... Read / communication key, 18 ... Print key, 19 ... Control unit,
20 …… Image sensor drive unit, 21 …… Binarization unit, 22 ……
Selector, 23 …… Memory, 24 …… Serial transceiver, 25
…… External signal input detector, 26 …… Head driver.

Claims (1)

(57) [Scope of utility model registration request] 1. A moving amount detecting means for outputting a moving amount detecting signal according to the movement of the apparatus main body, and a reading for reading image data on a document in synchronization with the moving amount detecting signal outputted from the moving amount detecting means. Means, receiving means for receiving data transmitted from an external device, external input detecting means for outputting a detection signal when the receiving means receives data from the external device, and the reading means and the receiving means. Storage means for storing data, operation mode setting means for operating the reading means and operating the receiving means by operating one key switch, and operation mode setting means If the detection signal is output from the external input detection means when the read / communication mode is set by When the data from the device is written in the storage means, the detection signal is not output from the external input detection means, and the movement amount detection signal is output from the movement amount detection means, it is read by the reading means. An image data reading device having a communication function, comprising: writing means for writing image data in the storage means.