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JPH05327594A - Id card communication system - Google Patents

Id card communication system

Info

Publication number
JPH05327594A
JPH05327594A JP4131224A JP13122492A JPH05327594A JP H05327594 A JPH05327594 A JP H05327594A JP 4131224 A JP4131224 A JP 4131224A JP 13122492 A JP13122492 A JP 13122492A JP H05327594 A JPH05327594 A JP H05327594A
Authority
JP
Japan
Prior art keywords
card
electric power
power
communication system
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4131224A
Other languages
Japanese (ja)
Other versions
JP2985504B2 (en
Inventor
Saburo Niina
三郎 新名
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP4131224A priority Critical patent/JP2985504B2/en
Publication of JPH05327594A publication Critical patent/JPH05327594A/en
Application granted granted Critical
Publication of JP2985504B2 publication Critical patent/JP2985504B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To miniaturize a battery and to prolong the service life of the battery by adding a received electric power detection circuit and a switching circuit for which electric power is not required to the communication system in the ID card communication system for performing the communication between a portable small-sized card in which personal information or the like is written and the controller by radio waves. CONSTITUTION:A receive electric power detector 111 is newly added to a conventional communication system and the output 7 of a power source 108 is controlled by the switching circuit 110 using the detected output 10. That is, since the detector 111 is a circuit for detecting the received electric power from the controller 201, a passive circuit such as a diode is sufficient and power supply is not required at all. Also, since the ID card is normally arranged very close to the controller 201, the received electric power from the controller 201 is large and the electric power detected output is a sufficient value. Thus, the power source is applied to the reception part of the main body of the card by controlling the circuit 110 to communicate with the controller 201, but when the detection of the received electric power is stopped, the power source is automatically released again and power consumption is reduced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、個人情報等を書き込ん
だ携帯用の小型ＩＤカードと、その制御装置との間の通
信を無線電波にて行うＩＤカード通信方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ID card communication system for carrying out communication between a portable small ID card in which personal information and the like are written and its control device by radio waves.

【０００２】[0002]

【従来の技術】従来の携帯用ＩＤカード通信方式は、図
２に示すように、制御装置２０１からの電波１は、ＩＤ
カード本体のアンテナ１０１を介して受信器１０２に接
続されて受信され、復調器１０３で復調されて受信信号
３となり、信号処理回路１０６に送られる。信号処理回
路１０６では、受信信号を解析し必要な情報４を記憶回
路１０７と情報授受を行い、再び信号処理回路１０６に
て処理され、送信信号５を出力する。送信信号５は変調
器１０５により変調され、変調出力６は送信器１０４に
て電力増幅され、再びアンテナ１０１を介して制御装置
２０１に送信される。2. Description of the Related Art In a conventional portable ID card communication system, as shown in FIG.
The signal is connected to the receiver 102 via the antenna 101 of the card body, received, demodulated by the demodulator 103 to be the received signal 3, and sent to the signal processing circuit 106. In the signal processing circuit 106, the received signal is analyzed, necessary information 4 is exchanged with the storage circuit 107, and the signal processing circuit 106 processes it again to output a transmission signal 5. The transmission signal 5 is modulated by the modulator 105, the modulation output 6 is power-amplified by the transmitter 104, and is again transmitted to the control device 201 via the antenna 101.

【０００３】この時、ＩＤカード本体は通信が必要なと
きだけ、送信信号を送出すればよいので、送信器１０４
及び変調器１０５の電源９は、電源１０８の出力７をス
イッチ回路１０９でオンすることにより供給される。し
かし受信部はいつ制御装置２０１との通信を行うかは不
明のため、常に通電されるか、または間欠的に受信部に
通電することで、その消費電力の低減をはかっていた。At this time, the ID card body needs to send a transmission signal only when communication is required.
The power source 9 of the modulator 105 is supplied by turning on the output 7 of the power source 108 by the switch circuit 109. However, since it is unknown when the receiving unit communicates with the control device 201, the power consumption is reduced by constantly energizing or intermittently energizing the receiving unit.

【０００４】[0004]

【発明が解決しようとする課題】上述した従来のＩＤカ
ード通信方式は、受信部の電源は、常時制御装置と通信
するので通電しておくか、または間欠的に通電するしか
なく、その電池の容量の低消費電力化に前述のような制
約が出る欠点があった。In the above-mentioned conventional ID card communication system, the power supply of the receiving section is always energized or intermittently energized because it constantly communicates with the control device. There is a drawback that the above-mentioned restrictions are imposed on the reduction of the power consumption of the capacity.

【０００５】[0005]

【課題を解決するための手段】本発明のＩＤカード通信
方式は、無線電波を送受信する制御装置と、前記無線電
波を送受信する送受信機，信号処理回路を備えたＩＤカ
ード本体との間のＩＤカード通信方式において、前記制
御装置からの受信電力を直接検波し、その検出出力によ
りＩＤカード本体の電源のオンオフの制御を行う。According to the ID card communication system of the present invention, an ID is provided between a control device for transmitting and receiving radio waves and an ID card main body provided with a transceiver for transmitting and receiving the radio waves and a signal processing circuit. In the card communication system, the received power from the control device is directly detected, and the detection output thereof controls the on / off of the power of the ID card body.

【０００６】[0006]

【実施例】次に、本発明について図面を参照して説明す
る。図１は本発明の一実施例の構成図である。本実施例
では、従来例の図２に対し、受信電力検出器１１１を付
加し、その検出出力１０により、電源１０８の出力７を
スイッチ回路１１０により制御することを特徴としてい
る。即ち、受信電力検出器１１１は、制御装置２０１か
らの受信電力を検出する回路で、ダイオード等の受動回
路で構成されているので、電源を必要としない。通常Ｉ
Ｄカードは制御装置２０１の極く近傍に置かれているの
で、制御装置からの受信電力は大きく、電力検出出力も
充分な値が期待できる。従って、スイッチ回路１１０を
制御してＩＤカード本体の受信部に電源が投入され、制
御装置との通信が行われる。制御装置から離れ、受信電
力検出が無くなると、再び自動的に電源が解放される。
なお、スイッチ回路１１０は携帯者が手動でスイッチを
オンとして受信機に電源を供給することも可能である。
スイッチ回路１１０は、ＣＭＯＳアナログスイッチ素子
等を用いれば極めて小さな電力しか使用しないので、Ｉ
Ｄカードをさらに低消費電力化することが可能である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. The present embodiment is characterized in that a reception power detector 111 is added to the conventional example shown in FIG. 2, and the output 7 of the power supply 108 is controlled by the switch circuit 110 by the detection output 10 thereof. That is, the reception power detector 111 is a circuit that detects the reception power from the control device 201, and is configured by a passive circuit such as a diode, and thus does not require a power supply. Normal I
Since the D card is placed very close to the control device 201, the received power from the control device is large and a sufficient power detection output can be expected. Therefore, the switch circuit 110 is controlled to turn on the power of the receiving unit of the ID card body, and communication with the control device is performed. When the power is separated from the control device and the reception power detection is lost, the power is automatically released again.
Note that the switch circuit 110 can be manually turned on by the wearer to supply power to the receiver.
The switch circuit 110 uses only a very small amount of power if a CMOS analog switch element or the like is used.
It is possible to further reduce the power consumption of the D card.

【０００７】[0007]

【発明の効果】上述したように本発明によれば、電力を
必要としない受信電力検出回路とスイッチ回路とを追加
することにより、従来例で使用していた電力を必要とせ
ず、ゼロとする事ができる。したがって電池の小型化／
長寿命化をはかることができる効果がある。As described above, according to the present invention, by adding the received power detection circuit and the switch circuit that do not require power, the power used in the conventional example is not needed and is set to zero. I can do things. Therefore, downsizing of batteries /
There is an effect that the life can be extended.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例の構成図である。FIG. 1 is a configuration diagram of an embodiment of the present invention.

【図２】従来のＩＤカード通信方式の構成図である。FIG. 2 is a configuration diagram of a conventional ID card communication system.

【符号の説明】[Explanation of symbols]

１０１ アンテナ １０２ 受信器 １０３ 復調器 １０４ 送信器 １０５ 変調器 １０６ 信号処理回路 １０７ 記憶回路 １０８ 電源 １０９，１１０ スイッチ回路 １１１ 受信電力検出回路 ２０１ 制御装置 101 Antenna 102 Receiver 103 Demodulator 104 Transmitter 105 Modulator 106 Signal Processing Circuit 107 Storage Circuit 108 Power Supply 109, 110 Switch Circuit 111 Received Power Detection Circuit 201 Control Device

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 無線電波を送受信する制御装置と、前記
無線電波を送受信する送受信機，信号処理回路を備えた
ＩＤカード本体との間のＩＤカード通信方式において、
前記制御装置からの受信電力を直接検波し、その検出出
力によりＩＤカード本体の電源のオンオフの制御を行う
事を特徴とするＩＤカード通信方式。1. An ID card communication system between a control device for transmitting and receiving radio waves, a transceiver for transmitting and receiving the radio waves, and an ID card body provided with a signal processing circuit,
An ID card communication system characterized by directly detecting received power from the control device and controlling ON / OFF of a power supply of an ID card main body by the detection output.
JP4131224A 1992-05-25 1992-05-25 ID card communication method Expired - Fee Related JP2985504B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4131224A JP2985504B2 (en) 1992-05-25 1992-05-25 ID card communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4131224A JP2985504B2 (en) 1992-05-25 1992-05-25 ID card communication method

Publications (2)

Publication Number Publication Date
JPH05327594A true JPH05327594A (en) 1993-12-10
JP2985504B2 JP2985504B2 (en) 1999-12-06

Family

ID=15052937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4131224A Expired - Fee Related JP2985504B2 (en) 1992-05-25 1992-05-25 ID card communication method

Country Status (1)

Country Link
JP (1) JP2985504B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6226573A (en) * 1985-07-29 1987-02-04 Oki Electric Ind Co Ltd Building entry/exit control system by transponder card
JPS6418850U (en) * 1987-07-24 1989-01-30
JPH03181235A (en) * 1989-12-08 1991-08-07 Tokimec Inc Non-contact data communication system
JPH0454482A (en) * 1990-06-25 1992-02-21 Kubota Corp Discriminating device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6226573A (en) * 1985-07-29 1987-02-04 Oki Electric Ind Co Ltd Building entry/exit control system by transponder card
JPS6418850U (en) * 1987-07-24 1989-01-30
JPH03181235A (en) * 1989-12-08 1991-08-07 Tokimec Inc Non-contact data communication system
JPH0454482A (en) * 1990-06-25 1992-02-21 Kubota Corp Discriminating device

Also Published As

Publication number Publication date
JP2985504B2 (en) 1999-12-06

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A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 19990831

LAPS Cancellation because of no payment of annual fees