JP2000134140A - Information processing unit, tag, information processing method and serving medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the time required to read/write information which is stored in a tag. SOLUTION: A reader/writer 3 detects a tag 2 to a read memory capacity information and communication speed information stored in the tag 2. The reader/writer 3 sets the highest communication speed corresponding to the memory capacity information and the communication speed information that are read and instructs change of the communication speed to the tag 2. Then the reader/writer 3 reads the minimum quantity of data required for post- processing from among the data stored in the tag 2 at the highest communication speed and allows a display device 4 to display the data. The reader/writer 3 reads the remaining information stored in the tag 2, while changing the communication speed corresponding to the operation of the user.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus, a tag, an information processing method, and a providing medium.
The present invention relates to an information processing apparatus, a tag, an information processing method, and a providing medium that can reduce a time required for transmitting and receiving information to and from a tag by controlling a communication speed with the tag.

[0002]

2. Description of the Related Art A non-contact type tag with a built-in memory (hereinafter, abbreviated as a tag) has a built-in memory, and reading and writing of information are performed by accessing the memory.

[0003]

However, the tag has a problem that it takes time to read or write information when the stored memory capacity is large.
For example, when the memory capacity of the tag is 1 Kbyte, the read time is about 250 ms. Further, when the memory capacity of the tag is eight times, that is, 8 Kbytes, the reading time is eight times, about 2,000 ms = 2 seconds, and the time lag until reading is completed is extremely long.

For this reason, in a device that performs processing by reading and writing all information stored in a tag, it is not possible to notify the user of the processing result until the communication is completed. However, there is a problem that the user cannot grasp the processing result without waiting for the communication completion time.

The present invention has been made in view of such a situation, and it is possible to shorten the time required for transmitting and receiving information to and from a tag, and to grasp the processing result without waiting for the user to complete the communication. Is to do so.

[0006]

According to a first aspect of the present invention, there is provided an information processing apparatus for transmitting / receiving tags and information, comprising: transmitting / receiving means for transmitting / receiving tags and information; and information received by the transmitting / receiving means. Communication speed information recognizing means for recognizing information for determining the communication speed stored in the tag, and communication speed control means for controlling the communication speed with the tag based on the information recognized by the communication speed information recognizing means. It is characterized by having.

According to a second aspect of the present invention, in the information processing method of the information processing apparatus for transmitting and receiving information to and from the tag, a transmitting and receiving step for transmitting and receiving information to and from the tag, A communication speed information recognizing step of recognizing information for determining a stored communication speed, and a communication speed control step of controlling a communication speed with a tag based on the information recognized in the communication speed information recognizing step. It is characterized by.

[0008] According to a third aspect of the present invention, there is provided a providing medium, comprising: a transmitting / receiving step of transmitting / receiving information to / from a tag to an information processing apparatus for transmitting / receiving information to / from a tag; A computer that executes a process including a communication speed information recognition step of recognizing information for determining a speed, and a communication speed control step of controlling a communication speed with a tag based on the information recognized in the communication speed information recognition step. A readable program is provided.

According to a fourth aspect of the present invention, there is provided a tag comprising: information storage means for storing information; communication speed information storage means for storing information for determining a communication speed stored in the information storage means;
Transmitting / receiving means for transmitting / receiving information stored in the information storage means or the communication speed information storage means.

According to a fifth aspect of the present invention, there is provided an information processing method, comprising: an information storing step of storing information; a communication speed information storing step of storing information for determining a communication speed stored in the information storing step; Transmitting and receiving the information stored in the communication speed information storing step.

According to a sixth aspect of the present invention, there is provided a providing medium, wherein: an information storing step of storing information; a communication speed information storing step of storing information for determining a communication speed stored in the information storing step; A computer-readable program that causes a tag to execute a process including a transmission / reception step of transmitting / receiving information stored in the speed information storage step is provided.

An information processing apparatus according to claim 1 and claim 2.
In the information processing method according to the above, and the providing medium according to the third aspect, information is transmitted and received to and from the tag, and from the received information, information that determines the communication speed stored in the tag is recognized and recognized. The communication speed with the tag is controlled based on the received information.

[0013] In the tag according to the fourth aspect, the information processing method according to the fifth aspect, and the providing medium according to the sixth aspect, information is stored, and information for determining the stored communication speed is stored. The stored information is transmitted and received.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. In order to clarify the correspondence between each means of the invention described in the claims and the following embodiments, each means is described. When the features of the present invention are described by adding the corresponding embodiment (however, an example) in parentheses after the parentheses, the result is as follows.

The information processing apparatus according to the first aspect is an information processing apparatus for transmitting and receiving information to and from a tag.
The communication speed information recognizing means (for example, the microcomputer 36 in FIG. 5) for recognizing information for determining the communication speed stored in the tag from the information received by the transmitting / receiving means, and the information amount recognizing means. Communication speed control means for controlling the communication speed with the tag based on the information amount (for example, FIG.
Microcomputer 36).

A tag according to a fourth aspect of the present invention includes a storage unit for storing information (for example, the EEPROM 18 in FIG. 2) and a communication speed information storage unit for storing information for determining a communication speed stored in the storage unit. For example, an EEPROM 18 in FIG. 2) and a transmission / reception unit (for example, the antenna 1 in FIG.
1) is provided.

However, of course, this description does not mean that each means is limited to those described.

FIG. 1 is a block diagram showing a configuration example of an information processing system to which the present invention is applied. In the information processing system of FIG. 1, the tag 2 and the reader / writer 3 attached to the information device 1 set the communication speed based on the memory capacity stored in the tag 2, transmit and receive information, and received the information. The information is displayed on the display device 4.

FIG. 2 shows a configuration example of the tag 2. The antenna 11 constituting the tag 2 receives an electromagnetic wave from the reader / writer 3 and supplies a signal corresponding to the received electromagnetic wave to the tuning circuit 12. Tuning circuit 12
Extracts a carrier wave used for communication between the tag 2 and the reader / writer 3 from the signal supplied from the antenna 11.

The amplification circuit 13 amplifies the input signal to a predetermined level and outputs the signal. The demodulation circuit 14
The carrier wave modulated by the carrier frequency is demodulated and converted into corresponding predetermined data. The communication control circuit 15 switches between data transmission and reception and controls the communication speed. Microcomputer (hereinafter,
The microcomputer 16 is a ROM (Read Only Memory)
Each unit is controlled according to a control program stored in the memory 17. Also, the microcomputer 16
Of the data supplied via the communication control circuit 15, data that needs to be stored is stored in an EEPROM (Electrically
(Erasable and Programmable Read Only Memory) 18 and store it as appropriate.

The modulation circuit 19 modulates the carrier frequency with the data supplied from the communication control circuit 15 and outputs the result. The amplification circuit 20 amplifies the carrier supplied from the modulation circuit 19 to a level required for communication. The antenna 11 transmits the carrier signal amplified by the amplifier circuit 19 by radio waves. The power supply circuit 21 rectifies, smoothes, accumulates the signal from the antenna 11, and supplies the power to each unit.

FIGS. 3 and 4 show examples of the data structure of the EEPROM 18 of the tag 2. FIG. As shown in FIG.
The storage area of the OM 18 is a memory management information area,
It consists of a media information area and a program information area.

The memory management information area is an area for storing unique information of the information device 1, and as shown in FIG. 4, a memory capacity information area and a communication speed information for storing memory capacity information and communication speed information. An area is provided. Memory capacity information is stored in EEPROM
18 is information indicating the capacity of the memory stored in
The communication speed information is information indicating the communication speed between the tag 2 and the reader / writer 3.

The media information area indicates an area for storing media information of the information device 1. The program information area indicates an area where program information of the information device 1 is stored.

FIG. 5 shows a configuration example of the reader / writer 3. The antenna 31 transmits and receives a predetermined carrier to transmit a predetermined signal to the tag 2 and perform communication with the tag 2. Tag 2
Also, a magnetic field for supplying power to the power supply is generated.

The tuning circuit 32 extracts a carrier wave used for communication between the tag 2 and the reader / writer 3 from the signal supplied from the antenna 31. The amplifier circuit 33 amplifies the input signal to a predetermined level and outputs the signal.
The demodulation circuit 34 demodulates the carrier frequency-modulated carrier and converts the carrier into predetermined data. The communication control circuit 35 switches transmission and reception of data and controls the communication speed. The microcomputer 36 controls each unit according to a control program stored in the ROM 37. The microcomputer 36
Converts the data supplied via the communication control circuit 35 into RA
An M (Random Access Memory) 38 is appropriately supplied and stored.

The modulation circuit 39 frequency-modulates the carrier with the data supplied from the communication control circuit 35 and outputs the result. The amplification circuit 40 converts the carrier supplied from the modulation circuit 39 into
Amplify to the level required for communication. The antenna 31 transmits the carrier wave amplified by the amplifier circuit 40 by radio waves.

OSD (On Screan Display) generation circuit 41
Generates an OSD signal from the data supplied from the microcomputer 36 and outputs the OSD signal to the display device 4 via the communication line 42.

Next, the operation of the information processing system of FIG. 1 will be described with reference to the flowchart of FIG. In step S11, the microcomputer 36 of the reader / writer 3
It is determined whether tag 2 has been detected.

That is, the microcomputer 36 of the reader / writer 3
Outputs to the communication control circuit 35 a signal indicating that a magnetic field for supplying power to the tag 2 is to be generated. The communication control circuit 35 switches the operation mode to the transmission mode and modulates the data supplied from the microcomputer 36 with the modulation circuit 39.
To supply.

The modulation circuit 39 modulates the signal supplied from the communication control circuit 35 into a signal having a predetermined carrier frequency, and supplies the signal to the amplification circuit 40. The amplification circuit 40 amplifies the signal supplied from the modulation circuit 39 to a level necessary for communication, and transmits the signal via the antenna 31.

The radio wave transmitted from the antenna 31 of the reader / writer 3 is received by the antenna 11 of the tag 2,
The signal is converted into a corresponding electric signal and supplied to the power supply circuit 21. The power supply circuit 21 supplies necessary power to each unit. As a result, the tag 2 enters an operation state.

The tuning circuit 12 extracts a signal corresponding to a predetermined carrier frequency from the signals supplied from the antenna 11 and supplies the signal to the amplifier circuit 13. The amplification circuit 13 amplifies the signal supplied from the tuning circuit 12 to a predetermined signal level, and then supplies the signal to the demodulation circuit 14.

The demodulation circuit 14 demodulates the signal supplied from the amplification circuit 13 and supplies the signal to the communication control circuit 15. In this case, the communication control circuit 15 has been switched to the reception mode, converts the signal supplied from the demodulation circuit 14 into digital data, and supplies the digital data to the microcomputer 16. When the microcomputer 16 receives the supplied data, the microcomputer 16 supplies the communication control circuit 15 with a signal indicating that the tag 2 has been activated. The communication control circuit 15 switches the operation mode to the transmission mode, and supplies the signal supplied from the microcomputer 16 to the modulation circuit 19.

The modulation circuit 19 modulates the signal supplied from the communication control circuit 15 to a carrier frequency and supplies the signal to the amplification circuit 20. The amplification circuit 20 amplifies the signal supplied from the modulation circuit 19 to a level required for communication. The signal amplified by the amplifier circuit 20 is transmitted via the antenna 11.

The antenna 31 of the reader / writer 3 is
, And the received carrier is supplied to the tuning circuit 32 after being converted into a corresponding electric signal.
The tuning circuit 32 extracts a signal of a predetermined carrier frequency from the signal supplied from the antenna 31,
To supply. The amplification circuit 33 amplifies the signal supplied from the tuning circuit 32 to a predetermined signal level, and supplies the signal level to the demodulation circuit 34.

The demodulation circuit 34 demodulates the signal modulated to the carrier frequency and supplies it to the communication control circuit 35. The communication control circuit 35 is switched to the reception mode, and the demodulation circuit 3
After converting the signal supplied from 4 into digital data, it is supplied to the microcomputer 36. The microcomputer 36 determines that the tag 2 has been detected based on the data supplied from the communication control circuit 35. The microcomputer 36 has the tag 2
Is stored in the RAM 38, and the OSD generation circuit 41 is controlled to generate a message indicating that the tag 2 has been detected. The OSD generation circuit 41 transmits the generated OSD signal (message) to the communication line 42.
Is supplied to the display device 4 via the. The display device 4 displays the supplied message.

When tag 2 is detected, step S12
In, the reader / writer 3 reads out data stored in the EEPROM 18 of the tag 2. That is, the microcomputer 36 of the reader / writer 3 outputs a transmission request signal of the memory management information stored in the tag 2 to the communication control circuit 35. The communication control circuit 35 switches the operation mode to the transmission mode, and supplies the data supplied from the microcomputer 36 to the modulation circuit 39.

The modulation circuit 39 modulates the signal supplied from the communication control circuit 35 into a signal having a predetermined carrier frequency and supplies the signal to the amplifier circuit 40. The amplification circuit 40 amplifies the signal supplied from the modulation circuit 39 to a level necessary for communication, and transmits the signal via the antenna 31.

The radio wave transmitted from the antenna 31 of the reader / writer 3 is received by the antenna 11 of the tag 2,
The signal is converted into a corresponding electric signal and supplied to the tuning circuit 12. The tuning circuit 12 extracts a signal corresponding to a predetermined carrier frequency from the signals supplied from the antenna 11,
It is supplied to the amplifier circuit 13. The amplifying circuit 13 includes the tuning circuit 1
After amplifying the signal supplied from 2 to a predetermined signal level, the signal is supplied to the demodulation circuit 14.

The demodulation circuit 14 demodulates the signal supplied from the amplification circuit 13 and supplies the signal to the communication control circuit 15. In this case, the communication control circuit 15 has been switched to the reception mode, converts the signal supplied from the demodulation circuit 14 into digital command data, and supplies the digital command data to the microcomputer 16. When the microcomputer 16 receives the supplied command data, that is, data corresponding to the data transmission request,
The data stored therein is read from the EEPROM 18 and the read data is supplied to the communication control circuit 15.
The communication control circuit 15 switches the operation mode to the transmission mode, and transmits the data supplied from the microcomputer 16 to the modulation circuit 19.
To supply.

The modulation circuit 19 modulates the signal supplied from the communication control circuit 15 to a carrier frequency and supplies the signal to the amplification circuit 20. The amplification circuit 20 amplifies the signal supplied from the modulation circuit 19 to a level required for communication. The signal amplified by the amplifier circuit 20 is transmitted via the antenna 11.

The carrier wave from the tag 2 received by the antenna 31 of the reader / writer 3 is supplied to the tuning circuit 32 after being converted into a corresponding electric signal. Tuning circuit 32
Extracts a signal of a predetermined carrier frequency from the signal supplied from the antenna 31 and supplies the signal to the amplifier circuit 33. The amplification circuit 33 amplifies the signal supplied from the tuning circuit 32 to a predetermined signal level, and supplies the signal level to the demodulation circuit 34.

The demodulation circuit 34 demodulates the signal modulated to the carrier frequency and supplies it to the communication control circuit 35. The communication control circuit 35 is switched to the reception mode, and the demodulation circuit 3
After converting the signal supplied from 4 into digital data, it is supplied to the microcomputer 36. The microcomputer 36 temporarily stores the data supplied from the communication control circuit 35 in the RAM 38 and recognizes the memory capacity (or communication speed) from the supplied memory capacity information (or communication speed information). Further, the microcomputer 36 converts the supplied data into a data format required for the OSD generation circuit 41, and then supplies the data to the OSD generation circuit 41. OSD generation circuit 41
Generates an OSD signal from the supplied data, and
2 to the display device 4. The display device 4 displays the supplied data.

In step S13, the microcomputer 36
Determines whether the recognized memory capacity (or communication speed) is smaller (slower) than the initially set memory capacity (or communication speed). If the microcomputer 36 determines that the recognized memory capacity (or communication speed) is smaller (slower) than the initially set memory capacity (or communication speed), in step S14, the microcomputer 36 sets the communication speed to the initially set communication speed. Set to 1,
In step S17, the remaining data stored in tag 2 is read. That is, the reader / writer 3 reads the media information and the program information stored in the EEPROM 18 of the tag 2. The operation in step S17 will be described later.

If it is determined that the recognized memory capacity (or communication speed) is equal to or larger than (or faster than) the initially set memory capacity (or communication speed), the recognized memory capacity (or communication speed) is determined in step S15. A signal indicating communication speed 2 corresponding to the memory capacity (or communication speed) is transmitted to tag 2. That is, the microcomputer 36 outputs a signal indicating the communication speed 2 to the communication control circuit 3.
5 The communication control circuit 35 converts the signal supplied from the microcomputer 36 into an analog signal and supplies the analog signal to the modulation circuit 39. The modulation circuit 39 includes a communication control circuit 35
The supplied signal is modulated into a signal of a predetermined carrier frequency and supplied to the amplifier circuit 40. The amplification circuit 40 amplifies the signal supplied from the modulation circuit 39 to a level necessary for communication, and transmits the signal via the antenna 31.

The data transmitted via the antenna 31 is received by the antenna 11 of the tag 2, converted into a corresponding electric signal, and supplied to the tuning circuit 12. The tuning circuit 12 outputs the signal supplied from the antenna 11
A signal corresponding to a predetermined carrier frequency is extracted and supplied to the amplifier circuit 13. The amplification circuit 13 amplifies the signal supplied from the tuning circuit 12 to a predetermined signal level, and then supplies the signal to the demodulation circuit 14.

The demodulation circuit 14 demodulates the signal supplied from the amplification circuit 13 and supplies the signal to the communication control circuit 15. In this case, the communication control circuit 15 has been switched to the reception mode, converts the signal supplied from the demodulation circuit 14 into digital data, and supplies the digital data to the microcomputer 16. The microcomputer 16 sets the communication speed to the communication speed 2 corresponding to the supplied data, and supplies the supplied data to the communication speed corresponding information area of the memory management information area of the EEPROM 18 and stores it.

In step S17, the reader / writer 3
Reads the remaining data stored in the EEPROM 18 of the tag 2. That is, the microcomputer 36 of the reader / writer 3
Transmits a transmission request signal for the media information area and the program information area stored in the tag 2 to the communication control circuit 3
5 is output. The communication control circuit 35 switches the operation mode to the transmission mode, and supplies the data supplied from the microcomputer 36 to the modulation circuit 39.

The modulation circuit 39 modulates the signal supplied from the communication control circuit 35 into a signal having a predetermined carrier frequency, and supplies the signal to the amplification circuit 40. The amplification circuit 40 amplifies the signal supplied from the modulation circuit 39 to a level necessary for communication, and transmits the signal via the antenna 31.

The radio wave transmitted from the antenna 31 of the reader / writer 3 is received by the antenna 11 of the tag 2,
The signal is converted into a corresponding electric signal and supplied to the tuning circuit 12. The tuning circuit 12 extracts only a signal corresponding to a predetermined carrier frequency from the signals supplied from the antenna 11 and supplies the extracted signal to the amplifier circuit 13. The amplification circuit 13 amplifies the signal supplied from the tuning circuit 12 to a predetermined signal level, and then supplies the signal to the demodulation circuit 14.

The demodulation circuit 14 demodulates the signal supplied from the amplification circuit 13 and supplies the signal to the communication control circuit 15. In this case, the communication control circuit 15 has been switched to the reception mode, converts the signal supplied from the demodulation circuit 14 into digital data, and supplies the digital data to the microcomputer 16. When the microcomputer 16 receives the supplied data, that is, the data corresponding to the data transmission request, the microcomputer 16 reads from the EEPROM 18
The data stored therein is read, and the read data is supplied to the communication control circuit 15. Communication control circuit 15
Switches the operation mode to the transmission mode,
The supplied data is supplied to the modulation circuit 19.

The modulation circuit 19 modulates the signal supplied from the communication control circuit 15 to a carrier frequency and supplies the signal to the amplifier circuit 20. The amplification circuit 20 amplifies the signal supplied from the modulation circuit 19 to a level required for communication. The signal amplified by the amplifier circuit 20 is transmitted via the antenna 11.

The carrier wave from the tag 2 received by the antenna 31 of the reader / writer 3 is supplied to the tuning circuit 32 after being converted into a corresponding electric signal. Tuning circuit 32
Extracts a signal of a predetermined carrier frequency from the signal supplied from the antenna 31 and supplies the signal to the amplifier circuit 33. The amplification circuit 33 amplifies the signal supplied from the tuning circuit 32 to a predetermined signal level, and supplies the signal level to the demodulation circuit 34.

[0055] The demodulation circuit 34 demodulates the signal modulated to the carrier frequency and supplies it to the communication control circuit 35. The communication control circuit 35 is switched to the reception mode, and the demodulation circuit 3
After converting the signal supplied from 4 into digital data, it is supplied to the microcomputer 36. The microcomputer 36 temporarily stores the data supplied from the communication control circuit 35 in the RAM 38 and recognizes the memory capacity (or communication speed) from the supplied memory capacity information (or communication speed information). Further, the microcomputer 36 converts the supplied data into a data format required for the OSD generation circuit 41, and then supplies the data to the OSD generation circuit 41. OSD generation circuit 41
Generates an OSD signal from the supplied data, and
2 to the display device 4. The display device 4 displays the supplied data.

The same process as that described above is performed for the process of writing information to the tag 2 of the reader / writer 3. In the case of performing the information writing process, the user can input information or the like via a display device using a remote controller.

As described above, according to the information processing system of FIG. 1, the reader / writer 3 sets the communication speed with the tag 2 based on the memory capacity (or communication speed information) stored in the tag 2. Since the information is transmitted and received, the time required for reading and writing the information stored in the tag 2 can be reduced, and the processing result can be promptly notified to the user.

FIG. 7 shows another operation of the information processing system of FIG. Operation of the information processing system of FIG. 7 and FIG.
The difference from the operation of the information processing system is that a command code for requesting the communication speed is set based on the memory capacity (or communication speed information) of the tag 2, and the communication speed is arbitrarily changed according to the set command code. The ability to send and receive information.

Steps S21 and S22 in FIG.
The processing in steps S23 and S27 is the same
Step S11, Step S12, Step S13,
And the same processing as in step S17. Hereinafter, detailed description of the processing inside the tag 2 and the reader / writer 3 will be omitted.

In step S21, step S11
Similarly, the reader / writer 3 determines whether the tag 2 has been detected. The reader / writer 3 waits in step S21 until the tag 2 is detected, and proceeds to step S22 when it is determined that the tag 2 is detected.

In step S22, step S12
Similarly to the above, the reader / writer 3 reads out the memory capacity information and the communication speed information stored in the EEPROM 18 of the tag 2.

In step S23, it is determined whether the memory capacity stored in the tag 2 is smaller (slower) than the initially set memory capacity (or communication speed), and if it is smaller (slower). In step S27, a command code requesting a communication speed 1 corresponding to a case where the memory capacity (or communication speed) is smaller (slower) than the initially set memory capacity is set. The remaining data stored in the tag 2 is read out at the corresponding communication speed 1, and the process ends.

If it is determined that the memory capacity stored in the tag 2 is equal to or larger than the initially set memory capacity, an instruction to switch the communication speed to the tag 2 is issued in step S25, and a step S26 is executed. In step S27, a command code for requesting the communication speed 2 corresponding to the case where the memory capacity is larger than the initially set memory capacity is set, and in step S27, as in step S17, the communication speed 2 corresponding to the set command code is set.
Reads the remaining data stored in the tag 2, and terminates the process.

A similar process is performed for the process of writing information to the tag 2 of the reader / writer 3.

As described above, according to the information processing system operating in the flow chart of FIG. 7, the communication speed is arbitrarily changed based on the memory capacity stored in the tag 2, and the changed communication speed is changed. Since the requested command code is set and the information is transmitted and received at the communication speed corresponding to the set command code, the time required for reading and writing the information stored in the tag 2 can be further reduced.

In the information processing system which operates in accordance with the flow chart of FIG. 7, switching of the communication speed is instructed before setting the command code for requesting the communication speed. The communication speed may be automatically switched within the network.

FIG. 8 shows still another operation of the information processing system of FIG. The difference between the operation of the information processing system of FIG. 8 and the operation of the information processing system of FIGS. 6 and 7 is that communication can be performed while arbitrarily switching the communication speed between the tag 2 and the reader / writer 3 based on a user operation. It is.

Steps S31 and S32 in FIG.
The processing in step S38 is performed in step S1 in FIG.
The processing is the same as Steps S1, S12, and S17, and S21, S22, and S27 in FIG.

In step S31, in step S11
As in (Step S21), the reader / writer 3 determines whether the tag 2 has been detected. The reader / writer 3 waits in step S31 until the tag 2 is detected, and proceeds to step S32 when it is determined that the tag 2 is detected.

In step S32, step S12
Similarly to (Step S22), the reader / writer 3 reads out the memory capacity information and the communication speed information stored in the EEPROM 18 of the tag 2.

In step S33, the reader / writer 3
Is set to the communication speed corresponding to the read memory capacity information and communication speed information.

In step S34, the reader / writer 3
Transmits the set communication speed to the tag 2 and instructs to switch the communication speed.

In step S35, the reader / writer 3
Reads the minimum data necessary for the subsequent processing from the data stored in the tag 2 at the highest communication speed. The read information is displayed on the display device 4.

In step S36, the reader / writer 3
Determines whether there is a response from the user (for example,
It is determined whether or not the user has performed a screen operation on the display device 4 by a remote commander or the like). When it is determined that the user has responded, in step S38, the reader / writer 3 reads the remaining data stored in the tag 2 as in step S17 (step S27), and ends the process.

If it is determined that there is no response from the user, in step S37, the reader / writer 3 instructs to reduce the communication speed, and in step S38, the reader / writer 3 sends the tag 2 to the tag 2 as in step S17 (step S27). The remaining data stored is read out, and the process is terminated.

Note that the same process is performed for the process of writing information to the tag 2 of the reader / writer 3.

As described above, according to the information processing system that operates in the flowchart of FIG. 8, first, the minimum data necessary for the subsequent processing is read out at the highest communication speed, and based on the user's operation. Since the communication speed is changed, the time required for reading or writing can be further reduced.

In the above, the communication speed between the tag 2 and the reader / writer 3 is set based on the memory information (or the communication speed information) stored in the memory management information area of the EEPROM 18 of the tag 2. Alternatively, the communication speed between the tag 2 and the reader / writer 3 may be set based on the communication speed correspondence information. In this case, the same processes as those in the flowcharts of FIGS. 6 to 8 are performed.

In the present specification, the term “system” means an entire device including a plurality of devices and means.

In this specification, a medium for providing a user with a computer program for executing the above-mentioned processing includes an information recording medium such as a magnetic disk and a CD-ROM, and a network such as the Internet and a digital satellite. Transmission media is also included.

[0081]

As described above, according to the information processing apparatus of claim 1, the information processing method of claim 2, and the providing medium of claim 3, the communication speed stored in the tag Since the communication speed with the tag is controlled based on the information for determining the tag, the process of reading and writing the information stored in the tag can be shortened.

According to the tag of the fourth aspect, the information processing method of the fifth aspect, and the providing medium of the sixth aspect, information for determining the communication speed is stored in the tag. The communication speed can be controlled based on the amount, and the process of reading and writing information stored in the tag can be shortened.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of an information processing system to which the present invention has been applied.

FIG. 2 is a block diagram illustrating a configuration example of a tag 2 in FIG.

FIG. 3 is a diagram illustrating a configuration example of a data structure of a tag 2.

FIG. 4 is another diagram showing a configuration example of a data structure of a tag 2;

FIG. 5 is a diagram illustrating a configuration example of a reader / writer 3 in FIG. 1;

FIG. 6 is a flowchart illustrating an operation of the information processing system of FIG. 1;

FIG. 7 is a flowchart illustrating another operation of the information processing system of FIG. 1;

FIG. 8 is a flowchart illustrating still another operation of the information processing system of FIG. 1;

[Explanation of symbols]

1 information equipment, 2 tag, 3 reader / writer, 4
Display equipment, 11, 31 Antenna, 12, 32
Tuning circuit, 13,33 amplifying circuit, 14,34 demodulating circuit, 15,35 communication control circuit, 16,36
Microcomputer, 17, 37 ROM, 18, 38 EEPRO
M, 19, 39 Modulation circuit, 20, 40 Amplification circuit, 21 Power supply circuit, 41 OSD generation circuit, 42
Communication line

Claims (6)

[Claims] 1. An information processing apparatus for transmitting and receiving information to and from a tag, comprising: a transmitting and receiving means for transmitting and receiving the information to and from the tag; and information for determining a communication speed stored in the tag from information received by the transmitting and receiving means. An information processing apparatus comprising: communication speed information recognizing means for recognizing a tag; and communication speed control means for controlling a communication speed with the tag based on information recognized by the communication speed information recognizing means. 2. An information processing method for an information processing apparatus for transmitting and receiving information to and from a tag, comprising: a transmitting and receiving step for transmitting and receiving information to and from the tag; and a communication speed stored in the tag from information received in the transmitting and receiving step. A communication speed information recognizing step of recognizing information for determining the communication speed, and a communication speed control step of controlling a communication speed with the tag based on the information recognized in the communication speed information recognizing step. Information processing method. 3. An information processing apparatus for transmitting and receiving information to and from a tag, a transmitting and receiving step for transmitting and receiving the information to and from the tag, and information for determining a communication speed stored in the tag from the information received in the transmitting and receiving step A computer-readable program that executes a process including a communication speed information recognition step of recognizing a communication speed and a communication speed control step of controlling a communication speed with the tag based on the information recognized in the communication speed information recognition step. A providing medium characterized by providing a program. 4. An information storage unit for storing information, a communication speed information storage unit for storing information for determining a communication speed stored in the information storage unit, and the information storage unit or the communication speed information storage unit. A transmitting / receiving means for transmitting / receiving information stored in the tag. 5. An information storage step for storing information; a communication speed information storage step for storing information for determining a communication speed stored in the information storage step; and the information storage step or the communication speed information storage step. Transmitting and receiving the stored information. 6. An information storage step for storing information; a communication speed information storage step for storing information for determining a communication speed stored in the information storage step; and the information storage step or the communication speed information storage step. A providing medium for providing a computer-readable program for causing a tag to execute a process including a transmitting / receiving step of transmitting / receiving stored information.