JP2004228766A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact electronic apparatus at low cost by using a high frequency module whose size is reduced and whose cost is decreased. <P>SOLUTION: The electronic apparatus is configured to include: the high frequency module 21; a flash memory 22; and a circuit section 23 for an apparatus body. The circuit section 23 for the apparatus body is a circuit section to serve a substantial function of the electronic apparatus, and the high frequency module 21 is configured to include: an RF transceiver section; a baseband processing section; and a ROM for storing a BD address and a default value of RF performance information, which are integrated in a one-chip IC for a communication function. A bar code, to which the RF performance information such as a transmission power and a frequency is written in order to adjust the BD address and the default value in the ROM, is provided to an upper face of a cover. The information for the adjustment is decided when the communication module is assembled to an electronic apparatus or the like, recorded as the bar code, written in part areas of the flash memory provided to the electronic apparatus or the like and used. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic device, and in particular, to a high-frequency module that has information for performance adjustment of a high-frequency portion such as a Bluetooth module, a wireless LAN module, a television tuner, and an FM tuner and executes each function. The present invention relates to an electronic device provided.
[0002]
[Prior art]
As a typical high-frequency module having information for performance adjustment of a high-frequency portion and performing each function, for example, a Bluetooth module is known. The Bluetooth module generally includes an RF transceiver chip, a baseband chip, and a storage medium such as a rewritable flash memory, and stores RF performance information such as a Bluetooth device (BD) address and transmission power and frequency in the flash memory. The RF performance in the RF transceiver chip is adjusted based on the written information of the registry.
[0003]
On the other hand, in recent years, the Bluetooth module has been provided as a single chip IC configured with an RF transceiver unit, a baseband processing unit, and a ROM. A Bluetooth module using such a one-chip IC is provided with a BD address and default values of RF performance information stored in a ROM. However, when a Bluetooth module is incorporated in an electronic device or the like and used, an RF performance of the Bluetooth module is reduced. It is necessary to perform adjustment, and the RF performance information stored and provided as a default value cannot be used as it is.
[0004]
Therefore, more recently, a Bluetooth module using a one-chip IC as described above and an EEPROM having a capacity of several k bits capable of writing RF performance information such as a BD address, transmission power, and frequency are mounted on a single substrate. A high-frequency module having a mounted configuration has been used.
[0005]
FIG. 3 is a diagram showing a configuration of a high-frequency module according to the related art having a Bluetooth module and an EEPROM using a one-chip IC. In FIG. 3, 11 is a one-chip IC, 12 is an EEPROM, 13 is a board, and 14 is a cover.
[0006]
A high-frequency module according to the related art is configured such that a one-chip IC 11 and an EEPROM 12 for communication by a Bluetooth module are mounted on a substrate 13 and the whole is covered by a cover 14 as shown in FIG. I have. As described above, the one-chip IC 11 includes an RF transceiver unit, a baseband processing unit, and a ROM in which BD addresses and default values of RF performance information are stored. The EEPROM 12 includes a BD address and a ROM. It is possible to write RF performance information such as transmission power and frequency for adjusting the default value of.
[0007]
As a conventional technology related to a Bluetooth module including the above-described RF transceiver chip, baseband chip, and a storage medium such as a rewritable flash memory, for example, a technology described in Non-Patent Document 1 or the like is known. ing. Further, as a conventional technique relating to an electronic device using the high-frequency module as described above, for example, a technique described in Patent Document 1 or the like is known.
[0008]
[Non-patent document 1]
Kazuhiro Miyazu, "Bluetooth Guidebook" (Nikkan Kogyo Shimbun, September 20, 2000, pp. 68-78)
[0009]
[Patent Document 1]
JP-A-11-301809
[Problems to be solved by the invention]
The high-frequency module including the one-chip IC and the EEPROM for the communication function according to the related art described above has a transmission power and a frequency for adjusting the default value written in the ROM included in the one-chip IC. An EEPROM for writing RF performance information such as the above is incorporated in a high-frequency module separately from a one-chip IC constituting a Bluetooth module. For this reason, the above-described high-frequency module according to the related art requires a space for arranging the EEPROM on the substrate, and has a problem that the size of the entire high-frequency module is increased and the cost is increased. As a result, an electronic device configured using the high-frequency module according to the related art described above has a problem in that it is difficult to reduce the size and cost of the electronic device itself.
[0011]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the high-frequency module according to the conventional technology, eliminate the need for an EEPROM arranged on a substrate, and provide a default value written in a ROM included in a one-chip IC for communication. It is an object of the present invention to provide an electronic device using a high-frequency module capable of performing the adjustment.
[0012]
[Means for Solving the Problems]
According to the present invention, there is provided an electronic device including a high-frequency module having a wireless transmission / reception unit and a digital signal processing unit, and a flash memory used for performing an original function of the electronic device inside the electronic device. This is achieved by storing, in the flash memory, an address unique to the high-frequency module and setting information for performance adjustment including the power of the transmission output signal from the wireless transmission / reception unit.
[0013]
The electronic device according to the present invention having the above-described means can be reduced in size and cost by using a low-cost high-frequency module.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of an electronic device according to the present invention will be described in detail with reference to the drawings.
[0015]
FIG. 1 is a perspective view illustrating a configuration of a high-frequency module used in an electronic device according to an embodiment of the present invention. In FIG. 1, reference numeral 15 denotes a bar code, and other symbols are the same as those in FIG.
[0016]
As shown in FIG. 1, the high-frequency module used in the embodiment of the present invention is configured such that only a one-chip IC 11 for a communication function as a Bluetooth module is mounted on a substrate 13 and the whole is covered with a cover 14. Have been. As described above, the one-chip IC 11 includes an RF transceiver unit, a baseband processing unit, and a ROM in which BD addresses and default values of RF performance information are stored. Then, on the upper surface of the cover, a one-dimensional or two-dimensional barcode 15 in which RF performance information such as transmission power and frequency for adjusting an address unique to the module and a default value in the ROM is provided. The barcode 15 may be provided on the cover 14 by engraving, or may be provided on the cover 14 by attaching a printed label.
[0017]
The RF performance information such as transmission power and frequency for adjustment written in the barcode 15 is used when the high-frequency module according to the embodiment of the present invention is incorporated into a set of electronic devices and the like and the electronic devices are in an operating state. Therefore, these pieces of information are determined when the high-frequency module is incorporated into a set of electronic devices and the like, are recorded as a barcode 15, and are provided in the electronic devices and the like. The flash memory is used by being written in a partial area of the flash memory to achieve the original function of the electronic device.
[0018]
Various types of two-dimensional barcodes are known as the barcode 15, but the present invention can be used with any type of barcode.
[0019]
Although the above-described embodiment of the present invention has been described as applying the present invention to a Bluetooth module configured by a one-chip IC, the present invention is applied to another wireless communication module, for example, a wireless LAN module. The present invention can also be applied to a tuner having a varactor diode in the tuning unit.
[0020]
The high-frequency module used in the above-described embodiment of the present invention is provided with a bar code 15 on which RF performance information such as transmission power and frequency for adjusting the BD address and the default value in the ROM is written on the upper surface of the cover 14. Therefore, the EEPROM can be omitted, the size of the module can be reduced, and the cost can be reduced.
[0021]
FIG. 2 is a diagram illustrating an electronic device according to an embodiment of the present invention configured using the above-described high-frequency module. In FIG. 2, reference numeral 21 denotes a high-frequency module, reference numeral 22 denotes a flash memory, and reference numeral 23 denotes a circuit unit for a device main body.
[0022]
The electronic device according to the embodiment of the present invention may be, for example, a portable information processing device such as a mobile phone or a PDA, and includes the high-frequency module 21, the flash memory 22, and the device body circuit 23 described above. It is configured with.
[0023]
The device main body circuit portion 23 is a circuit portion for performing the original function of the illustrated electronic device. When the electronic device is, for example, a mobile phone, the communication function as the mobile phone and the processing of an audio signal for voice transmission / reception are performed. It performs functions such as a data processing function for sending and receiving e-mails. In this case, the high-frequency module 21 is preferably a module including the one-chip IC 11 as a Bluetooth module, and is used for communication with another electronic device such as a PC. Further, the flash memory 22 is used for storing a telephone number book, a history of incoming and outgoing calls, storing mails, and the like. It is used for holding RF performance information such as the written transmission power and frequency for adjustment.
[0024]
When the electronic device is a PDA, the high-frequency module 21 is preferably configured as a wireless LAN module. The high-frequency module 21 is a hot spot that includes a wireless LAN device on the go and enables various information services. It is used when receiving various information services using devices.
[0025]
When the electronic device is a tuner such as a television or an FM, a bar code in which RF performance information for adjusting a varactor diode constituting a tuning unit is written is attached to a top surface of the tuner, and the information is written. What is necessary is just to store and use the flash memory which stores the information for tuning included in the tuner.
[0026]
In the electronic device according to the embodiment of the present invention described above, since the size of the high-frequency module used is small, the size and cost of the electronic device itself can be reduced.
[0027]
【The invention's effect】
As described above, according to the present invention, the size of the EEPROM can be reduced by eliminating the need for an EEPROM disposed on the substrate and adjusting the default value written in the ROM included in the one-chip IC. Since a high-frequency module that reduces the cost and the cost is used, the size and cost of the electronic device itself can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a configuration of a high-frequency module used in an electronic device according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an electronic device according to an embodiment of the present invention.
FIG. 3 is a diagram showing a configuration of a high-frequency module according to the related art including a Bluetooth module using a one-chip IC and an EEPROM.
[Explanation of symbols]
11 One-chip IC
12 EEPROM
13 Board 14 Cover 15 Barcode 21 High frequency module 22 Flash memory 23 Circuit section for device main body

Claims (1)

In an electronic device including a high-frequency module having a wireless transmission / reception unit and a digital signal processing unit, and a flash memory used for performing an original function of the electronic device inside the electronic device, an address unique to the high-frequency module; An electronic device, wherein setting information for performance adjustment including power of a transmission output signal from a wireless transmission / reception unit is stored in the flash memory.

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