JPH04213183A - Data carrier - Google Patents

Abstract

PURPOSE:To change freely the display content from the outside by providing the data carrier holding data with a display device. CONSTITUTION:A receiving part of infrared ray and a command decoder decoding the command are provided in data carriers 1, 1a. The command is produced from remote controllers 2, 2a, the data in a memory 11 is read in accordance with the command or the display is performed by a display part 18 by writing data in the prescribed address. Thus, an operator can be freely changed the display content.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data carrier used in the management of tools of machine tools, parts and products in factories, or article identification systems in logistics systems.

0002

[Background Art] In order to mechanize the management of tools in conventional machine tools and the identification of parts and products on assembly lines in factories, systems for identifying and managing various items such as tools, parts, and products have been developed. Is required. Therefore, JP-A-1-163
991, the object to be identified is provided with a data carrier having a memory, necessary information is written in such memory by external data transmission, and the information is read out as necessary. system is proposed.

0003

[Problems to be Solved by the Invention] However, according to such conventional identification systems, data carriers that hold data cannot recognize the data from the outside, and the contents of the necessary data cannot be recognized when needed. The drawback was that it could not be confirmed. The present invention has been made in view of these problems with conventional data carriers, and its technical object is to attach a display to a data carrier so that its contents can be changed from the outside.

0004

Means for Solving the Problems The invention according to claim 1 of the present application has a memory for holding data, a data transmission means for demodulating commands and data given from the outside, and transmitting data read from the memory, A data carrier attached to an article to be identified, comprising an infrared signal receiving means for receiving an infrared signal, a command decoder for decoding a command from a signal received by the infrared signal receiving means, and a command decoded by the command decoder. The present invention is characterized by comprising a read/write control section that reads or writes the contents of the memory in the data carrier based on the command, and a display means that displays the address or data based on the command. The invention according to claim 2 of the present application is characterized in that it has an infrared signal transmitting means for transmitting an infrared signal, and transmits a response corresponding to a command as an infrared signal. In addition, the invention of claim 3 of the present application is
The device is characterized by having a buzzer that notifies when data is received or an error occurs. Furthermore, the invention of claim 4 of the present application is characterized in that it has a solar cell and supplies power from the solar cell to each part.

[0005]

[Operation] According to the present invention having such characteristics, the data carrier receives an infrared signal from a remote control device, decodes the command, and causes the read/write controller to read or write the contents of the memory in the data carrier. In addition to controlling the writing, the memory address and data are displayed by the display means in accordance with the command.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1(a) is a perspective view showing the state of use of a data carrier according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of the internal circuit of the data carrier. As shown in these figures, the data carrier 1 is configured to perform data communication with a remote control device 2 in addition to data communication with a read/write head. That is, the data carrier 1 has a receiving coil L1 and a transmitting coil L that receive signals from a read/write head (not shown) on the front of the case.
2 is provided. The receiving coil L1 is connected to the demodulation circuit 3 as shown in FIG. It also has a light receiving element 4 such as a photodiode that receives infrared signals from the outside, and its light receiving output is also given to the demodulation circuit 5. Demodulation circuits 2 and 5 demodulate the applied signals, and their outputs are applied to decoding circuit 6. The decoding circuit 6 decodes the encoded and sent signal, and its output is given to a command decoder 7 and a data register 8. The command decoder 7 decodes the given command,
If the command is normal, a command output is given to the read/write (R/W) control circuit 9, and if it is an error, a command error is given to the error code storage circuit 10. The R/W control circuit 9 writes data to or reads data from a predetermined address in the memory 11 based on a given command, and the read data is given to the data register 8. . Also, current status information is given to the status register 12 and output as data. The output of the data register 8 is applied to an encoding circuit 13, encoded, and applied to modulation circuits 14 and 15. The modulation circuits 14 and 15 drive the coil L2 and the transmitting infrared light emitting diode 16, respectively. Further, a display data register 17 for displaying data is provided inside the data carrier, and display contents are displayed on a display section 18.
Displayed by Here, the display section 18 is provided as, for example, a four-digit numerical display on the front surface of the data carrier, as shown in FIG. A buzzer 19a is connected to the R/W control circuit 9 to indicate that data has been received, and a buzzer 19b is connected to the command decoder 7 to notify a command error when a command error is detected. Further, this data carrier is configured such that a solar cell 20 is attached to the surface of the case, and power is supplied from the solar cell 20 to each part within the data carrier.

Next, the configuration of a remote control device 2 (remote controller) that performs bidirectional data transmission with this data carrier will be explained with reference to FIG. FIG. 3(a) shows a transmitting section of the remote control device, and FIG. 3(b) shows a receiving section of the remote control device. An input numeric keypad 21 provided in the transmitting section is used to input predetermined commands, addresses, and data, and its output is given to a display command register 22. The display command register 22 temporarily holds commands, addresses, and data given from the numeric keypad 21, and is used to store commands, addresses, and data given from the numeric keypad 21.
At the time of transmission, the given data is given as a serial signal to the encoding circuit 24, and at the same time the buzzer 25
give to The encoding circuit 24 encodes the signal and transmits the signal to the modulation circuit 2.
By driving the infrared light emitting diode 27 via the infrared light emitting diode 6, a signal is sent to the data carrier side. On the other hand, the receiving section has a photodiode 31 sensitive to infrared rays for receiving light, and its output is given to a demodulation circuit 32, as shown in FIG. 3(b). The output of the demodulation circuit 32 is given to a data register 34 via a decoding circuit 33, and is displayed on a display 35, and when a signal is received, a buzzer 36 is configured to notify the reception of data.

Next, the operation of this embodiment will be explained with reference to a flowchart. When the data carrier starts operating, it first waits for a signal from the read/write head (RWH) or the remote control device 2 (step 4).
1, 42) When a signal from the remote control device 2 is received, the process proceeds to step 43 to check whether communication with the read/write head is in progress. If communication is in progress, in step 44 a signal indicating that the data carrier is in a busy state is sent to the remote control device 2 using an infrared signal. And routine 45
Continue communication with the read/write head. On the other hand, if communication with the read/write head is not in progress, step 4
At step 6, the data carrier 1 sends a response indicating that communication is possible to the remote control device 2. The process then proceeds to step 47, enters a communication mode with the remote control device 2, and waits for reception of the command sent from the remote control device 2, as well as the address and data contained therein (routine 48). When these signals are received, in step 49, data is read from the memory of the data carrier or written in accordance with the command and displayed on the display section 18 of the data carrier. The process then proceeds to step 50, where the data carrier sends a display completion response to the remote control device 2, displays on the display unit 18 the completion of communication with the remote control device 2, and ends the process. At this time, step 46
, 51, the operating state may be notified to the operator by the buzzer 16 at the same time. In this way, the operability can be improved by controlling the content displayed on the data carrier from the remote control device.

In this embodiment, a light emitting diode 16 is also provided on the data carrier side to send data from the data carrier 1 to the remote control device 2. As shown in FIG. Alternatively, data may be transmitted only from data carrier 2a to data carrier 1a. In this case, the data carrier 1a does not require the modulation circuit 15 or the light emitting diode 16 that transmits the modulated signal as infrared light. Also, the remote control device 2a has only the transmitting section shown in FIG. 3(a).
The receiving section (b) becomes unnecessary. In this case, as shown in the flowchart of FIG. 5, signals from the read/write head and the remote control device are awaited in steps 61 and 62, and when a signal from the remote control device 2a is received, the process proceeds to step 63. Check whether there is communication with the read/write head. If communication is in progress, continue the communication (routine 64);
If communication is not in progress, the process advances to step 65 to enter a communication mode with the remote control device, and in routine 66 receives commands (address, data) from the remote control device. Then, in accordance with the command, the address and data are displayed on the display section 18 of the data carrier, and the process ends (step 67). In this case as well, it is possible to change the display content of the data carrier in response to a command from an external remote control device and check the state of data held in the data carrier.

0010

[Effects of the Invention] As explained in detail above, the present invention has the effect that the operator can directly manipulate the contents of the data carrier to change the display contents and check the retention state of the data. can get. Further, in the invention of claim 2 of the present application, by sending a response to a command from the data carrier to the remote control device using an infrared signal, it is possible to confirm the operation details and display data within the remote control device. Furthermore, in the invention of claim 3 of the present application, by displaying a buzzer when data is received or an error occurs, it is possible to make the operator reliably recognize the operating state. Furthermore, in the invention of claim 4 of the present application, by taking the power source from a solar cell, it is possible to eliminate the need to replace the battery of the data carrier and extend its life.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a data carrier in use according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of a data carrier according to an embodiment of the present invention.

FIG. 3 is a block diagram showing an example of a remote control device used in the present invention.

FIG. 4 is a flowchart showing the operation of this embodiment.

FIG. 5 is a flowchart illustrating the operation of a data carrier according to another embodiment of the present invention.

[Explanation of symbols]

1, 1a Data carrier 2, 2a Remote control device 3, 5, 32
Demodulation circuit 4, 31 Phototransistor 6, 33 Decoding circuit 7 Command decoder 8 Data register 9 R/W control circuit 11 Memory 13, 24 Encoding circuit 14, 15, 26 Modulation circuit 16, 27 Light emitting diode 18 Display section 19a, 19b, 25, 36 Buzzer 20 Solar cell 23, 25 Display

Claims (4)

[Claims] 1. A data carrier attached to an article to be identified, comprising a memory for holding data, a data transmission means for demodulating commands and data given from the outside, and transmitting the data read from the memory. an infrared signal receiving means for receiving an infrared signal, a command decoder for decoding a command from a signal received by the infrared signal receiving means, and a memory in a data carrier based on the command decoded by the command decoder. A data carrier comprising: a read/write controller for reading or writing contents; and a display means for displaying an address or data based on the command. 2. The data carrier according to claim 1, further comprising infrared signal transmitting means for transmitting the infrared signal, and transmitting a response corresponding to the command as an infrared signal. 3. The data carrier according to claim 1, further comprising a buzzer that notifies the user when data is received or an error occurs. 4. The data carrier according to claim 1, wherein the data carrier has a solar cell and supplies power from the solar cell to each part.