JP5471712B2 - Terminal device and program - Google Patents

Description

The present invention relates to reading takes terminal device and program the ID tag radio communication with reading a code optically.

  Conventionally, a code label of a one-dimensional / two-dimensional code such as a code label or a QR code label (QR code: registered trademark), and a non-contact ID tag such as an RFID (Radio Frequency Identification) tag are read as a reading target. Terminal devices such as a PDA (Personal Digital Assistant) and a handy terminal having a technique capable of acquiring written information are known. The terminal device has various uses such as inventory of merchandise assets and inventory management of merchandise because the management information related to merchandise can be accumulated by reading the reading target attached to each merchandise.

By the way, when inventory of assets and inventory management of goods are performed using the reading object, there are a plurality of kinds of reading objects such as code labels and RFID tags attached separately for each managed product. Cases often exist.
In recent years, both RFID tags and code labels can be read on the same product. Specifically, a code label in which the same ID as the RFID tag is written is printed on the RFID tag in which an ID for uniquely identifying the RFID tag is stored, and the data written in the RFID tag is stored as needed. This is the case when it is stored on the server. In such a case, even if the RFID tag cannot be read, by reading the ID from the code label, it is possible to inquire about the data written in the RFID tag from the server, and the data backup performance is maintained. Be drunk.
As described above, different types are taken into account when different types of reading targets such as code labels and RFID tags are attached to each product separately, or when multiple different types of reading targets are attached to one product. It is desired that the reading object can be read by one terminal device.

  Therefore, a code label reading process by a two-dimensional image sensor using a CCD or MOS and an RFID tag reading process by an RFID reader can be performed. When a trigger button is pressed, a code label is read for one reading object. A terminal device that sequentially executes a process and a reading process for an RFID tag with a time difference is known (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2001-52105

  However, in the terminal device described in Patent Document 1, even if the load on the battery is suppressed by sequentially executing with a time difference, the time difference is determined in a state where the reading process for the code label is completely completed. Since the reading process for the RFID tag is started, a long time is required until both reading processes are completed, and there is a problem that the response of the reading process cannot be improved.

  Accordingly, an object of the present invention is to provide a terminal device and a program that can read a plurality of different types of reading objects while suppressing the load on the battery as much as possible and have a good response of reading processing.

請 Motomeko 1, a code reading means for reading the code optically, a terminal having an ID reading means for reading an ID tag in a wireless communication, and control so as to optically scan process the code to be read A scanning control means for controlling the start of the decoding process after the scanning process, a start control means for controlling the start of the reading process of the ID tag by the ID reading means, and the successful reading of the ID tag after the start. Is determined to be prior to successful decoding by the decoding process, and if it is earlier, the process is terminated and the tag reading result is displayed without waiting for completion of the decoding process. And after the start, it is determined whether or not the successful decoding by the decoding process precedes the successful reading of the ID tag. A second control means for controlling so that exit the respective processing without waiting for completion of the preparative displays the decoded read result, characterized by comprising a.

A third code reading unit that reads a one-dimensional code by light irradiation, a second code reading unit that reads an image code from an image captured by an imaging unit, an ID reading unit that reads an ID tag by wireless communication, The first code reading means and the second code are estimated by estimating whether the reading target is a one-dimensional code or an image code based on the intensity of reflected light with respect to light irradiation on the reading target. Scan control means for driving any one of the reading means and controlling the reading target to be scanned by any of the driven reading means, and in accordance with the start of the decoding process after the scanning process, A start control means for controlling the start of the ID tag reading process by the ID reading means; Processing control means for determining whether or not the decoding succeeds according to the above, and if not, the processing is terminated without displaying the completion of the decoding process and the tag reading result is displayed. It is characterized by that.

  Therefore, the present invention can read a plurality of different types of reading objects while suppressing the load on the battery as much as possible, and can provide a terminal device and a program with good response of reading processing.

It is a block diagram which shows the principal part structure of the terminal device which concerns on this invention. FIG. 2 is a diagram for explaining a main configuration of a power supply unit in the terminal device of FIG. 1. When the alternate reading process according to the present invention is executed a plurality of times, the state of the entire terminal device, the code scanner unit, the CPU, the RFID reader / writer unit, and the time change of the current consumption, the time required for the decoding process is the RFID tag It is a figure for demonstrating typically the case where it is less than the reading time of reading operation | movement of this. When the alternate reading process according to the present invention is executed a plurality of times, the state of the entire terminal device, the code scanner unit, the CPU, the RFID reader / writer unit, and the time change of the current consumption, the time required for the decoding process is the RFID tag It is a figure for demonstrating typically the case where it exceeds the reading time of this reading operation. Time variation of the battery voltage, current consumption of the entire terminal device, barcode scanner unit, RFID reader / writer unit, and the state of the terminal device and trigger key when the reading operation of the code label and the RFID tag is executed simultaneously (I) shows a case where the voltage exceeds the minimum voltage, and (ii) shows a case where the voltage falls below the minimum voltage. It is a flowchart for demonstrating. It is a flowchart for demonstrating the reading process by the terminal device which concerns on this invention. It is a flowchart for demonstrating the scanning process and decoding process by the terminal device which concerns on this invention, (i) shows a scanning process, (ii) shows a decoding process, respectively. It is a figure for demonstrating another principal part structure of the electric power supply part of FIG.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

  The terminal device 1 according to the present embodiment is a PDA that can read a code label of a one-dimensional / two-dimensional code such as a code label or a QR code label attached to a product or the like, or a non-contact ID tag such as an RFID tag as a reading target. And handheld terminals. As shown in FIG. 1, the terminal device 1 includes a code scanner unit 10, an RFID reader / writer unit 20, an input / output unit 30, a secondary storage unit 40, a power supply unit 50, and a control unit. 100.

  The code scanner unit 10 captures a reading target (a code label of a one-dimensional / two-dimensional code) according to an instruction from the control unit 100 and generates image data. Specifically, the code scanner unit 10 includes an LED (Light Emitting Diode) unit 11, an imaging unit 12, and the like.

The LED unit 11 is a light source such as an LED lamp that emits LED light as illumination light, and irradiates the reading target (reading position) with the LED light.
The imaging unit 12 includes an imaging device such as a CMOS (Complementary Metal Oxide Semiconductor) sensor. And the imaging part 12 images the reading object illuminated with the LED light of the LED part 11 (optically reads by photoelectric conversion), and produces | generates image data. In addition, the imaging unit 12 transfers the generated image data to the control unit 100 (a RAM 120 described later) in order for the control unit 100 to perform decoding processing of the image data.
Of course, a CCD (Charge Coupled Device) may be used as the image sensor instead of the CMOS sensor.

The RFID reader / writer unit 20 includes an antenna 21, and reads and writes information of the RFID tag via the antenna 21 in accordance with an instruction from the control unit 100.
More specifically, the RFID reader / writer unit 20 modulates a transmission signal input from the control unit 100 in a state where the RFID tag is arranged in a readable range of the antenna 21 and loops the antenna 21 (illustrated). (Omitted). Then, current is generated in the loop coil in the RFID tag via the electromagnetic field generated from the loop coil, and the information is received on the RFID tag side by demodulating and encoding the electric signal. Then, information reading or information writing in the memory in the RFID tag is performed. In addition, a current flows in the loop coil via an electromagnetic field generated in the loop coil in accordance with a signal of transmission information such as information read from the memory in the RFID tag, and the electric signal is modulated by the RFID reader / writer unit 20. By being encoded, information is received by the RFID reader / writer unit 20 side.
The RFID reader / writer unit 20 performs the reading operation on the RFID tag from the same position (reading position) where the code scanner unit 10 performs the reading operation on the code label when a trigger key 34 described later is pressed. It is arranged like this.

The input / output unit 30 is a variety of operation keys / buttons for a user to perform an input operation on the terminal device 1, a display for output display, and the like. Specifically, the input / output unit 30 includes an operation unit 31, an LCD (Liquid Crystal Display) 32, a buzzer device 33, and the like.
The operation unit 31 includes a trigger key 34, other various operation keys / buttons, a touch panel provided integrally with the LCD 32, and the like.
The trigger key 34 is pressed by the user while the code scanner unit 10 and the RFID reader / writer unit 20 are brought close to the reading position, so that the control unit controls the reading operation on the code label and the RFID tag with respect to the reading target. This is a key for causing 100 to execute.
The LCD 32 is a liquid crystal display capable of displaying an image, and displays various images according to an image output signal from the control unit 100. Specifically, the LCD 32 displays a reading result for a reading target by the code scanner unit 10 or the RFID reader / writer unit 20.
The buzzer device 33 generates a beep sound or an alarm sound according to the sound output signal from the control unit 100 and outputs the sound.

  The secondary storage unit 40 is an EEPROM (Electrically Erasable Programmable ROM) which is a readable / writable non-volatile memory or a flash memory, and in accordance with a control signal from the control unit 100, various types of system data set by the user and setting data related to each function Store and update data.

The power supply unit 50 supplies necessary power to each unit of the terminal device 1. Specifically, the power supply unit 50 includes a battery 51, DC / DC converters 52 and 53, and a plurality of state switching units 54.
The battery 51 is a secondary battery such as a nickel / cadmium storage battery, a nickel / hydrogen storage battery, or a lithium ion battery, and generates electrical energy.
The DC / DC converters 52 and 53 convert the electric energy generated by the battery 51 into an appropriate voltage required in each part of the terminal device 1. The voltage converted by the DC / DC converter 52 is supplied to a CPU 110 of the control unit 100 described later, and the voltage converted by the DC / DC converter 53 is supplied to the terminal device 1 other than the CPU 110 via the state switching unit 54. Are supplied to each of the parts.
The state switching unit 54 is configured so that the CPU 110 switches between a power supply state and a non-supply state (ON state and OFF state) to each unit of the terminal device 1 other than the CPU 110 by the voltage converted by the DC / DC converter 53. Switching is performed according to a signal output via GPIO (General Purpose Input / Output). The state switching unit 54 not only has a function of switching between a power supply state and a non-supply state, but also includes a normal mode in which each part of the terminal device 1 is normally activated (a driving state) and each part of the terminal device 1. It also has a function of switching between a suspended mode (standby mode and power saving mode), which is a suspended state (standby state).

  The control unit 100 includes a CPU (Central Processing Unit) 110, a RAM (Random Access Memory) 120, and a ROM (Read Only Memory) 130, and functions as a computer that controls each part of the terminal device 1. To do.

The CPU 110 executes various programs (program codes) stored in the ROM 130 according to input signals input from the respective units of the terminal device 1 and outputs output signals to the respective units based on the programs related to the execution. The overall operation of the terminal device 1 is controlled. Specifically, the CPU 110 controls driving of the code scanner unit 10 and the RFID reader / writer unit 20, switching control of the power supply state via the state switching unit 54 (mode switching control between the normal mode and the suspend mode), Execution control for various operation signals when the operation unit 31 is operated, output control of images and sounds via the LCD 32 and the buzzer device 33, and when the reading target is imaged by the code scanner unit 10 and image data is generated Then, transfer control for transferring the image data to the RAM 120 is performed.
The RAM 120 has a program storage area for expanding a processing program executed by the CPU 110, a data storage area for temporarily storing input data and a processing result generated when the processing program is executed, and the like. Prepare. Specifically, the RAM 120 stores image data transferred from the code scanner unit 10 (imaging unit 12).

  The ROM 130 stores, for example, a system program that can be executed by the terminal device 1, various processing programs that can be executed by the system program, and data that is used when the processing program is executed. Specifically, the ROM 130 stores a decoding processing program, an execution program, and the like.

  Next, the decoding process program and the execution program stored in the ROM 130 will be described.

The decoding process program is a program for causing the CPU 110 to execute a function of performing a decoding process for restoring the image data generated by the image data generation unit into data of a predetermined code format.
Specifically, when the reading object is imaged by the code scanner unit 10 to generate image data and the image data is transferred to the RAM 120, the CPU 110 determines a one-dimensional code label and a two-dimensional code label from the image data. The type of code label is determined. When the determination result is a one-dimensional code label, the CPU 110 calculates the length and width of the code related to the one-dimensional code label and the interval between adjacent bars, and based on the calculation result, Restore data to the original code format. On the other hand, when the determination result is a two-dimensional code label, the CPU 110 restores the data in the two-dimensional code format based on the arrangement pattern of the data cells of the two-dimensional code label composed of white and black. In addition, the CPU 110 performs error correction using a check digit on the restored data.
Of course, the decoding processing function by the CPU 110 may be realized by providing the code scanner unit 10 with a circuit for decoding processing.

  The execution program includes a pattern in which the CPU 110 reads the code label by executing the code scanner unit 10 and the decoding processing program when the trigger key 34 is pressed, and an RFID reader / reader for the reading target. This is a program for executing an alternate reading process in which a pattern for performing an RFID tag reading operation by the writer unit 20 is repeated alternately.

  Specifically, as shown in the “status” column in FIGS. 3 and 4, when the trigger key 34 is pressed by the user and the trigger key 34 is turned on, the CPU 110 executes the execution program, and the state switching unit 54 is set. The code scanner unit 10 is supplied with power, and the code scanner unit 10 is driven and controlled to be in a driving state (the code scanner unit 10 is switched to an ON state). Let The CPU 110 controls transfer of image data generated by the code scanner unit 10 when the code scanner unit 10 performs the scan process. Here, the scan processing refers to irradiation processing of LED light by the LED unit 11, imaging processing and image data generation processing by the imaging unit 12, and image data to the RAM 120 which is executed according to the transfer control signal of the image data by the CPU 110. Transfer processing.

Next, when the scanning process by the code scanner unit 10 is completed, the CPU 110 starts the decoding process of the transferred image data by executing the decoding process program. Then, when starting the decoding process, the CPU 110 switches the code scanner unit 10 to the standby state via the state switching unit 54 and supplies power to the RFID reader / writer unit 20, and the RFID reader / writer unit 20. Is controlled to be in the driving state (the RFID reader / writer unit 20 is switched to the ON state), and the reading operation of the RFID tag is started for the reading target.
Next, when the RFID tag reading operation is completed, the CPU 110 switches the RFID reader / writer unit 20 to the OFF state via the state switching unit 54.

Next, when the reading operation of the RFID tag is completed and the decoding process is completed, the CPU 110 switches the code scanner unit 10 to the driving state, and causes the code scanner unit 10 to perform a scanning process on the reading target. Here, the decoding processing time TD required for the decoding process by the CPU 110 is variable in accordance with the processing capability of the CPU 110, the amount of image data to be decoded, and the like. Therefore, as shown in FIG. 3, when the decoding processing time TD is shorter than the reading time TR of the RFID tag reading operation, the CPU 110 waits for the reading time TR to elapse before switching the code scanner unit 10 to the driving state. On the other hand, as shown in FIG. 4, when the decoding processing time TD is longer than the reading time TR, the code scanner unit 10 is controlled to switch to the driving state after waiting for the decoding processing time TD to elapse. Accordingly, the scanning process by the code scanner unit 10 and the reading operation by the RFID reader / writer unit 20 are sequentially executed.
Then, the CPU 110 repeatedly executes the above-described alternate reading process until the user releases the pressed state of the trigger key 34 or until the code label or the RFID tag is successfully read.
The driving state and the standby state of the code scanner unit 10 indicate a state in which the LED unit 11 irradiates LED light and a state in which the LED light irradiation is stopped. That is, even when the state switching unit 54 switches between the driving state and the standby state of the code scanner unit 10, other configurations of the code scanner unit 10 such as the imaging unit 12 continue to be driven.

Therefore, when the CPU 110 executes the alternate reading process a plurality of times, the current consumption IS of the code scanner unit 10, the current consumption IC of the CPU 110, the current consumption IR of the RFID reader / writer unit 20, and the consumption of the entire terminal device 1. The current IA (including current consumption IS, IC, IR, and other current consumption of each component of the terminal device 1) changes as shown in FIG. 3 and FIG.
Here, in FIG. 3 and FIG. 4, it is assumed that the CPU 110 executes the alternate reading process twice after the trigger key 34 is pressed by the user. It is assumed that the trigger key 34 is released at the end of the execution of the two processes, and neither the code label nor the RFID tag has been successfully read while the CPU 110 executes the two processes.
As shown in FIG. 3 and FIG. 4, the CPU 110 does not simultaneously execute a scan process with a large amount of current consumption (particularly, an LED light irradiation process by the LED unit 11) and an RFID tag reading operation in the code label reading operation. Therefore, the current consumption IA of the entire terminal device 1 when the trigger key 34 is pressed only increases by the peak amount of the current consumption IS or IR. Therefore, as shown in FIG. 5 (i), a sudden increase in the current consumption IA can be avoided as in the case where the reading operation of the code label and the RFID tag is executed at the same time, so the load on the battery 51 is reduced. It can be reduced. Further, as shown in FIG. 5 (ii), the voltage V of the battery 51 causes the entire terminal device 1 to operate as a result of a rapid increase in the current consumption IA when the code label and RFID tag reading operations are executed simultaneously. It is also possible to avoid a situation in which the power supply of the entire terminal device 1 is stopped below the required minimum voltage VM. In addition, since the CPU 110 starts the decoding process and immediately executes the reading operation of the RFID tag after the scanning process is completed, the response of the reading process can be maintained while suppressing the rapid increase in the consumption current IA.

(Reading process)
Next, reading processing by the terminal device 1 according to the present embodiment will be described with reference to the flowchart of FIG.

First, when the trigger key 34 is pressed by the user, the CPU 110 executes an execution program, supplies power to the code scanner unit 10 via the state switching unit 54, and controls the drive of the code scanner unit 10 to turn it on. (Step S1).
Next, the CPU 110 executes a scanning process for a reading target described later (step S2).
Next, the CPU 110 executes a decoding process program and starts decoding the image data generated by the scan process in step S2 (step S3).
Next, the CPU 110 supplies power to the RFID reader / writer unit 20 via the state switching unit 54, drives and controls the RFID reader / writer unit 20 (step S4), and the RFID reader / writer unit 20 is turned on. The reading operation of the RFID tag is executed (step S5).

Next, the CPU 110 determines whether or not the RFID tag has been successfully read in step S5 (step S6). If it is determined that the reading is successful (step S6; Yes), the CPU 110 proceeds to the processing after step S16.
On the other hand, if the CPU 110 determines in step S6 that reading of the RFID tag has not been successful (step S6; No), the CPU 110 determines whether or not the decoding process started from step S3 has ended (step S6). S7).

If the CPU 110 determines that the decoding process has been completed (step S7; Yes), the CPU 110 obtains the result of the decoding process (step S8), and determines whether the decoding process is successful (step S8). S9).
Here, when the CPU 110 determines that the decoding process has been successful (that is, it has been determined that the code label has been successfully read for the reading target) (step S9; Yes), the process proceeds to step S16 and subsequent steps. On the other hand, when the CPU 110 determines that the decoding process has not been successful (that is, it has been determined that the reading of the code label has failed for the reading target) (step S9; No), or the decoding process ends in step S7. If it is determined that it has not been performed (step S7; No), it is determined whether or not the time measured from the time when the RFID tag reading operation is started in the time measuring unit (not shown) has passed the reading time TR ( Step S10). When the CPU 110 determines that the reading time TR has not elapsed (step S10; No), the processing from step S5 is repeated.
On the other hand, when determining that the reading time TR has elapsed (step S10; Yes), the CPU 110 switches the RFID reader / writer unit 20 to the OFF state via the state switching unit 54 (step S11).

Next, the CPU 110 determines whether or not the decoding process started from step S4 has ended (step S12). If the CPU 110 determines that the decoding process has not ended (step S12; No), the CPU 110 waits until it ends.
On the other hand, when the CPU 110 determines that the decoding process has been completed (step S12; Yes), the CPU 110 obtains the result of the decoding process (step S13) and determines whether the decoding process is successful (step S13). Step S14).
If the CPU 110 determines that the decoding process is successful in step S14 (step S14; Yes), the CPU 110 proceeds to the process after step S16. On the other hand, if the CPU 110 determines in step S14 that the decoding process has not been successful (step S14; No), it determines whether or not the pressed state of the trigger key 34 is continued (step S15). If the CPU 110 determines that the process is continued in step S15 (step S15; Yes), it repeats the processes in and after step S2.

Next, when the CPU 110 determines that the reading of the RFID tag is successful in step S6 (step S6; Yes), the CPU 110 determines that the decoding process is successful in steps S9 and S14 (step S9; Yes). Step S14; Yes), when it is determined that the operation is not continued in Step S15 (Step S15; No), the code scanner unit 10 and the RFID reader / reader / writer unit 20 are switched to the OFF state via the state switching unit 54. (Step S16).
Then, the CPU 110 displays the reading result for the reading object via the LCD 32 (step S17), and ends this process.

(Scan process)
Next, the scanning process according to step S2 of the flowchart shown in FIG. 6 will be described with reference to the flowchart of FIG.

First, the CPU 110 controls the lighting of the LED unit 11 by setting the code scanner unit 10 to the driving state via the state switching unit 54, and irradiates the reading target with LED light (step S21).
Next, the CPU 110 causes the imaging unit 12 to image the reading target, starts generating image data (step S22), and starts transferring the generated image data to the RAM 120 (step S23).
Next, the CPU 110 determines whether or not the imaging / image data generation of the reading target started in step S22 is completed (step S24), and when it is determined that the reading is not completed (step S24; No), the reading is performed. Continue to generate target image / image data.
On the other hand, if the CPU 110 determines that the process has ended in step S24 (step S24; Yes), the CPU 110 controls the LED unit 11 to be turned off by setting the code scanner unit 10 to the standby state via the state switching unit 54 ( In step S25), it is determined whether or not the transfer of the image data started in step S23 to the RAM 120 has been completed (step S26).
If the CPU 110 determines that the processing has not ended in step S26 (step S26; No), the CPU 110 continues to transfer the image data to the RAM 120 and determines that the processing has ended in step S26 (step S26; Yes). ), This process is terminated.

(Decoding process)
Next, the decoding process according to step S4 of the flowchart shown in FIG. 6 will be described using the flowchart of FIG. 7 (ii).

First, the CPU 110 acquires the image data generated by the scanning process from the RAM 120, executes the decoding process program, and starts the decoding process (step S41).
Next, the CPU 110 determines whether or not the decoding process started in step S41 has ended (step S42). When determining that it has not ended (step S42; No), the CPU 110 continues until the decoding process ends. To do.
On the other hand, when determining that the decoding process has ended (step S42; Yes), the CPU 110 generates a decoding process end notification signal for determining whether or not the decoding process has ended in step S7 and step S12. (Step S43).
Next, the CPU 110 determines whether or not the decoding process is successful by determining whether or not the image data can be restored to the code format data by executing the decoding process (step S44). If the CPU 110 determines that the decoding process is successful in step S44 (step S44; Yes), the CPU 110 generates a decoding process success notification signal as a result of the decoding process acquired in steps S8 and S13 ( Step S45), the process is terminated.
On the other hand, when determining that the decoding process has failed in step S44 (step S44; No), the CPU 110 generates a decoding process failure notification signal as a result of the decoding process acquired in steps S8 and S13. (Step S46), the process is terminated.

As described above, according to the terminal device 1 in the present embodiment, when the trigger key 34 is pressed, the CPU 110 executes the execution program and the decoding processing program, thereby performing the code label reading operation on the reading target. And an alternate reading process in which the RFID tag reading operation is alternately repeated. As a result, even if the type of reading target is a code label or an RFID tag, reading can be performed in response to a single pressing operation of the trigger key 34. Furthermore, since the CPU 110 starts the decoding process after the end of the scanning process and immediately performs the RFID tag reading operation without waiting for the end of the decoding process, the response of the reading process can be improved.
Therefore, the program executed by the terminal device 1 and the control unit 100 can be said to be a terminal device and a program that can read a plurality of different types of reading objects while suppressing the load on the battery as much as possible and that has a good response of reading processing.

  Further, in the terminal device 1, when the CPU 110 executes the alternate reading process, the code scanner unit 10 is switched from the driving state to the standby state via the state switching unit 54 when the decoding process is started, and the decoding process is completed. In addition, when the RFID tag reading operation by the RFID reader / writer unit 20 is completed, the code scanner unit 10 is controlled to be switched from the standby state to the driving state via the state switching unit 54. For this reason, the scanning operation with a large amount of current consumption in the reading operation of the code label (particularly the LED light irradiation processing by the LED unit 11) and the reading operation of the RFID tag are not performed simultaneously. Compared with the case where the processes are executed simultaneously, a rapid increase in the consumption current IA can be prevented, and the load on the battery 51 can be suppressed as much as possible.

  In the terminal device 1, after executing the execution program, the CPU 110 ends the execution of the alternate reading process when the code label reading operation is successful or when the RFID tag reading operation is successful. Therefore, since the user can immediately grasp the result of the reading process, the load on the battery is suppressed as much as possible, the reading process response for the user is improved, and the convenience of the terminal device 1 is further improved. .

  In the terminal device 1, the driving state and the standby state of the code scanner unit 10 can be switched by switching between a state in which the LED unit 11 irradiates LED light and a state in which the LED light irradiation is stopped.

(Modification 1)
Modification 1 of the terminal device 1 will be described with reference to FIG.
As shown in FIG. 8, the power supply unit 50 a requires electrical energy generated by the battery 51 in each unit of the terminal device 1 by the DC / DC converter 52 and the plurality of DC / DC converters 53 a. Configured to convert to the appropriate voltage. That is, the power supply unit 50 shown in FIG. 2 is configured to be distributed to the voltages necessary for each unit of the terminal device 1 other than the CPU 110 and supplied to each unit after passing through one DC / DC converter 53. However, the power supply unit 50a shown in FIG. 8 is different in that the voltage required for each unit of the terminal device 1 other than the CPU 110 is distributed at the time of input to the plurality of DC / DC converters 53a.
With this configuration, the first modification of the terminal device 1 can obtain the same effects as those of the terminal device 1 according to the first embodiment, as well as the voltages necessary for each part of the terminal device 1 other than the CPU 110. Even if each part is different, it is possible to easily generate a voltage necessary for each part by adjusting the conversion amount of each of the plurality of DC / DC converters 53a.

The description in the above embodiment is an example of a suitable terminal device according to the present invention, and the present invention is not limited to this.
Further, the detailed configuration and detailed operation of each part constituting the terminal device in the above embodiment can be changed as appropriate without departing from the spirit of the present invention.

  For example, when the CPU 110 executes the alternate reading process, if the reading time TR is sufficiently shorter than the decoding processing time TD, the reading operation of the RFID tag is executed a plurality of times during the decoding processing time TD. It may be configured. Thereby, for example, when the terminal device 1 is used mainly in an environment where the reading target is an RFID tag, the response of the reading process of the RFID tag is improved, and the convenience of the terminal device 1 for the user is further improved.

  In the above embodiment, the code scanner unit 10 is configured to be able to read both one-dimensional and two-dimensional code labels. However, a separate primary is used for reading one-dimensional code labels (barcode labels). An original code scanner unit may be provided. In this case, the one-dimensional code scanner unit is configured such that, for example, laser light is irradiated toward the reading target and the intensity of the reflected light of the laser light can be output, and the CPU 110 is based on the intensity of the reflected light. Thus, when the reading target is assumed to be a code label, it is possible to estimate whether the reading target is likely to be a one-dimensional code label or a two-dimensional code label. If the CPU 110 estimates that the code is a two-dimensional code label, the one-dimensional code scanner unit is turned off and an alternate reading process is executed. On the other hand, when the CPU 110 estimates that the code label is a one-dimensional code label, the code scanner unit 10 is placed in a standby state or an OFF state, and the one-dimensional code label and the RFID tag are read alternately. By configuring the terminal device 1 in this way, a one-dimensional code label, a two-dimensional code label, an RFID tag, and respective reading mechanisms are provided, so that different types of reading objects can be read more reliably. In addition, since the reading operation is executed after estimating whether the code label is one-dimensional or two-dimensional, it is not necessary to drive an unnecessary code scanner unit, so that power saving of the terminal device 1 is achieved. I can do it.

  Furthermore, in the above embodiment, when the CPU 110 executes the alternate reading process, the code scanner unit 10 starts the code label reading operation. However, for example, the terminal device 1 mainly uses the RFID tag as the reading target. The RFID tag may be started from the RFID tag reading operation by the RFID reader / writer unit 20 depending on the use in the environment. In that case, only the reading operation of the first RFID tag is not in the process of decoding the code label, so the improvement effect of the reading process response is not obtained, but the RFID tag with higher use frequency can be read sooner. In addition, since the second and subsequent repetitions of the alternate reading process are the same as those in the above embodiment, the convenience of the terminal device 1 for the user is further improved.

  In the above embodiment, each function described in the flowchart is stored in a storage medium (ROM 130) in the form of a program code readable by the control unit 100 (CPU 110) as a computer. The processing operation by the computer (control unit 100) is executed. The processing operation by the computer (control unit 100) can be executed in accordance with the above-described program code transmitted from the outside via the transmission medium. In this embodiment, including the transmission medium, the storage medium It is defined as

1 Terminal device 10 Code scanner unit (code reading unit)
11 LED unit (image data generation unit, illumination unit)
12 Imaging unit (image data generation unit)
20 RFID reader / writer (non-contact ID reader)
30 Input / output unit 31 Operation unit 34 Trigger keys 50, 50a Power supply unit 54 State switching unit (switching unit)
100 control unit (code reading unit, decoding processing unit, control unit, code reading unit, non-contact ID reading unit)
110 CPU
120 RAM
130 ROM

Claims (7)

A terminal device having code reading means for optically reading a code and ID reading means for reading an ID tag by wireless communication,
Scan control means for controlling to optically scan a code to be read; and
In accordance with the start of the decoding process after the scanning process, a start control unit that controls the start of the ID tag reading process by the ID reading unit;
After the start, it is determined whether or not the successful reading of the ID tag is ahead of the successful decoding by the decoding process, and if it is earlier, the process ends without waiting for the decoding process to end and the tag First control means for controlling to display a reading result;
After the start, it is determined whether or not the successful decoding by the decoding process is ahead of the successful reading of the ID tag, and if it is earlier, the processes are terminated without waiting for the end of reading the ID tag. Second control means for controlling to display the decoded read result;
A terminal device comprising: The code reading means includes a first code reading means for reading a one-dimensional code by light irradiation, and a second code reading means for reading a code by an image picked up by the image pickup means,
The scan control means drives one of the first code reading means and the second code reading means on the basis of the intensity of reflected light with respect to light irradiation with respect to the reading object, and optically scans the code. Control processing,
The terminal device according to claim 1 . A terminal device having first code reading means for reading a one-dimensional code by light irradiation, second code reading means for reading an image code from an image picked up by an image pickup means, and an ID reading means for reading an ID tag by wireless communication. There,
One of the first code reading means and the second code reading means is driven by estimating whether the reading object is a one-dimensional code or an image code based on the intensity of reflected light with respect to light irradiation on the reading object. Scan control means for controlling the reading object to be scanned by any of the driven reading means;
In accordance with the start of the decoding process after the scanning process, a start control unit that controls the start of the ID tag reading process by the ID reading unit;
After the start, it is determined whether or not the successful reading of the ID tag is ahead of the successful decoding by the decoding process, and if it is earlier, the process ends without waiting for the decoding process to end and the tag Processing control means for controlling to display the reading result;
A terminal device comprising: The scan control unit switches the scan processing drive to a standby state in accordance with the start of decoding processing after the scanning processing , and when there is no successful decoding by the decoding processing and successful tag reading by the ID reading unit, On the condition that the trigger key operation for code reading is continued , switching from the standby state in the scan control means to scan processing drive ,
Terminal device according to any one of claims 1 to 3, wherein the this. It said scan control means, when the scan process drive irradiates illumination light for the reading target, upon switching to the standby state stops irradiation of the illumination light,
Terminal device according to claim 4, wherein the arc. A program for controlling a computer of a terminal device having code reading means for optically reading a code and ID reading means for reading an ID tag by wireless communication,
The computer,
Scan control means for controlling to optically scan a code to be read;
Start control means for controlling the start of the ID tag reading process by the ID reading means in accordance with the start of the decoding process after the scanning process,
After the start, it is determined whether or not the successful reading of the ID tag is ahead of the successful decoding by the decoding process, and if it is earlier, the process ends without waiting for the decoding process to end and the tag First control means for controlling to display the reading result;
After the start, it is determined whether or not the successful decoding by the decoding process is ahead of the successful reading of the ID tag, and if it is earlier, the processes are terminated without waiting for the completion of the reading of the ID tag. Second control means for controlling to display the decoded read result;
A computer-readable program designed to function as a computer . A terminal device comprising: a first code reading unit that reads a one-dimensional code by light irradiation; a second code reading unit that reads an image code from an image captured by an imaging unit; and an ID reading unit that reads an ID tag by wireless communication. A program for controlling a computer,
The computer,
One of the first code reading means and the second code reading means is driven by estimating whether the reading object is a one-dimensional code or an image code based on the intensity of reflected light with respect to light irradiation on the reading object. Scan control means for controlling the reading target to be scanned by any of the driven reading means;
Start control means for controlling the start of the ID tag reading process by the ID reading means in accordance with the start of the decoding process after the scanning process
After the start, it is determined whether or not the successful reading of the ID tag is ahead of the successful decoding by the decoding process, and if it is earlier, the process ends without waiting for the decoding process to end and the tag Processing control means for controlling to display the reading result;
A computer-readable program designed to function as a computer.

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