JPS61138388A - Optical ic card - Google Patents

Optical ic card

Info

Publication number
JPS61138388A
JPS61138388A JP59259070A JP25907084A JPS61138388A JP S61138388 A JPS61138388 A JP S61138388A JP 59259070 A JP59259070 A JP 59259070A JP 25907084 A JP25907084 A JP 25907084A JP S61138388 A JPS61138388 A JP S61138388A
Authority
JP
Japan
Prior art keywords
optical
voltage
card
light
terminal interface
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
JP59259070A
Other languages
Japanese (ja)
Other versions
JPH0554157B2 (en
Inventor
Toshihiro Asami
俊宏 浅見
Takafumi Nakajo
中条 孝文
Hideo Kuwabara
秀夫 桑原
Kazuo Murano
和雄 村野
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP59259070A priority Critical patent/JPS61138388A/en
Publication of JPS61138388A publication Critical patent/JPS61138388A/en
Publication of JPH0554157B2 publication Critical patent/JPH0554157B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/1097Optical sensing of electronic memory record carriers, such as interrogation of RFIDs with an additional optical interface
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/20Individual registration on entry or exit involving the use of a pass
    • G07C9/28Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

PURPOSE:To stop the action of a built-in circuit when an optical IC card is not used by providing a luminous energy modulator capable of adjusting a voltage detecting circuit and luminous energy by the prescribed time in terms of the optical IC card used by converting optical power into electric power. CONSTITUTION:A luminous source 2a supplies an optical power LP to the photodetecting part 1a of the optical IC card 1 by a white color lamp, etc. The luminous energy modulator 2a1 applies the hourly modulation to the luminous source 2a so that the optical power LP can be supplied during the prescribed period. Now the luminous energy modulator 2a1 is previously adjusted so that the optical electrostatic element 1a1 of the photodetecting part 1a can output a time width tau0, a vibration va-vb and the rectangular pulse voltage V0 of a period T. Inputting the voltage V0, the voltage detecting circuit 1a2 changes said voltage V0 to a voltage V1 at on-off levels of a logical element which is installed in the circuit and has a threshold vs. When a voltage V3 continues during a certain period with a t0 as a reference, a switch SW is turned on, and a microprocessor 1b1 becomes accessible to A RAM and a PROM. The card 1 will not act by a light beam from the sun, etc.

Description

【発明の詳細な説明】 (産業上の利用分野〕 本発明は、光を入力することにより内蔵した光起電素子
(Photo Voltalic rlevice以下
PVT)と略称する)から電力の供給を受けるようにし
た光ICカードに関する。
[Detailed Description of the Invention] (Industrial Application Field) The present invention is designed to receive power from a built-in photovoltaic element (hereinafter abbreviated as PVT) by inputting light. Regarding optical IC cards.

〔従来の技術〕[Conventional technology]

従来の光ICカード11は、第5図に示すように、受光
部leaを光起電素子PVDのみにより構成し端末イン
タフェース12の光412aから受けた光パワー6pを
電力に変換することにより、他の内蔵するデータ入出力
ポートIICやデータ処理部11bにその電力を供給し
ていた。
As shown in FIG. 5, the conventional optical IC card 11 has a light-receiving section lea made up of only a photovoltaic element PVD and converts the optical power 6p received from the light 412a of the terminal interface 12 into electric power. The power was supplied to the built-in data input/output port IIC and the data processing section 11b.

この電力を供給されたデータ入出カポ−1−11,C。The data input/output capo-1-11,C supplied with this power.

のフォトダイオードPD、発光ダイオードLl’ur)
photodiode PD, light emitting diode Ll'ur)
.

データ処理部11bのマイクロプロセッサl1bl、R
OM、RAM、、FROMが起動し、端末インタフェー
ス】2の人出力ポート12Cとの間で光通信手段を用い
てデータの授受が行われる。
Microprocessor l1bl, R of data processing unit 11b
OM, RAM, and FROM are activated, and data is exchanged with the human output port 12C of terminal interface 2 using optical communication means.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

ところが、従来の光ICカード11の受光部11aは光
起電素子PVDのみから構成されている。
However, the light receiving section 11a of the conventional optical IC card 11 is composed only of photovoltaic elements PVD.

従って、端末インタフェース12の光源12aだけでな
く他の光源、例えば太陽や室内照明からの光パワーが上
記光源12aの光パワーJpと同等以上であれば、従来
カードの光起電素子PVDは励振されて電力をRAM等
に供給する。
Therefore, if the optical power from not only the light source 12a of the terminal interface 12 but also other light sources, such as the sun or indoor lighting, is equal to or higher than the optical power JP of the light source 12a, the photovoltaic element PVD of the conventional card will not be excited. power is supplied to RAM etc.

このため、従来のカード11はそれを使用しない場合で
も回路が動作し内蔵メモリに蓄えられたデータが破壊さ
れることがあるという問題点があった。
For this reason, the conventional card 11 has a problem in that the circuit operates even when the card is not used, and the data stored in the built-in memory may be destroyed.

〔問題点を解決するための手段〕[Means for solving problems]

本発明によれば、端末インタフェースの光源からの光パ
ワーを受光部を構成する光起電素子により電力に変換し
て該電力をマイクロプロセッサを有するデータ処理部と
上記端末インタフェースとの間でデータを授受するデー
タ入出力ポート部へ供給する光ICカードにおいて、上
記光起電素子の出力側には電圧検出回路が設けられてい
ると共に上記データ処理部には上記マイクロプロセッサ
とそのメモリ間との接続スイッチ手段が設けられ、」二
記電圧検出回路は、上記端末インタフェースに設置した
光量変調器により時間的変調をかけた上記光源の光パワ
ーに対応した電圧を入力した場合のみ上記接続スイッチ
手段に対してスイッチオン信号を送出することを特徴と
する光ICカードが提供される。
According to the present invention, the optical power from the light source of the terminal interface is converted into electric power by the photovoltaic element constituting the light receiving section, and the electric power is used to transfer data between the data processing section having a microprocessor and the terminal interface. In the optical IC card supplied to the data input/output port section for sending and receiving data, a voltage detection circuit is provided on the output side of the photovoltaic element, and the data processing section is provided with a connection between the microprocessor and its memory. A switch means is provided, and the voltage detecting circuit detects the connection switch means only when a voltage corresponding to the optical power of the light source temporally modulated by the light intensity modulator installed at the terminal interface is input. An optical IC card is provided which is characterized in that it sends out a switch-on signal.

〔作 用〕[For production]

本発明による光ICカードには、その受光部を構成する
光起電素子の出力側に電圧検出回路が設けられ該カード
との間でデータの授受を行う端末インタフェースの光源
にその光量を所定の時間だけ調節できる光量変調器を接
続することにより、光ICカード使用時には上記光源か
らの光量が所定量の場合のみの上記光起電素子の出力電
圧変化を検出できるので、光ICカードを使用しないと
きは内蔵回路は動作せずにメモリ内容が破壊されること
がない。
The optical IC card according to the present invention is provided with a voltage detection circuit on the output side of the photovoltaic element constituting the light receiving section, and is configured to supply a predetermined amount of light to the light source of the terminal interface that exchanges data with the card. By connecting a light intensity modulator that can adjust time only, when using an optical IC card, it is possible to detect changes in the output voltage of the photovoltaic element only when the amount of light from the light source is a predetermined amount, so the optical IC card is not used. In this case, the built-in circuit will not operate and the memory contents will not be destroyed.

〔実施例〕〔Example〕

以下、本発明を実施例により添付図面を参照して説明す
る。
Hereinafter, the present invention will be explained by way of examples with reference to the accompanying drawings.

第1図は、本発明に係る光ICカード1の構成図である
FIG. 1 is a block diagram of an optical IC card 1 according to the present invention.

上記カート1は受光部1a、データ処理部1b及びデー
タ入出力ポートICから成り、上記受光部1aが所定光
量の光パワーL Pを受光したときのみスイッチオン信
号Sを送出してスイッチSWをオンしマイクロプロセッ
サlb、のメモリRAM等へのアクセスが可能となる。
The cart 1 is composed of a light receiving section 1a, a data processing section 1b, and a data input/output port IC, and only when the light receiving section 1a receives a predetermined amount of optical power LP, it sends out a switch-on signal S and turns on the switch SW. It becomes possible to access the memory RAM, etc. of the microprocessor lb.

上記受光部1aは端末インタフェース2の光源2aから
の光パワーL Pを受光する装置であって光起電素子1
a+と電圧検出回路lagから成る。
The light receiving unit 1a is a device that receives the optical power LP from the light source 2a of the terminal interface 2, and includes the photovoltaic element 1.
It consists of a+ and a voltage detection circuit lag.

上記光起電素子(PVD)1a+は、よく知られている
ように、光起電効果即ち光を半導体に照射することによ
り生成された電子と正孔対の濃度差により起電力が生じ
る効果、を利用し光エネルギを電気エネルギに変換する
素子である。
As is well known, the photovoltaic device (PVD) 1a+ has a photovoltaic effect, that is, an effect in which an electromotive force is generated due to a concentration difference between electron and hole pairs generated by irradiating a semiconductor with light. This is an element that converts light energy into electrical energy using

また上記光起電素子の出力側に設けた電圧検出回路la
2は上記PVDの出力電圧が後述するように一定の方形
波電圧の場合のみデータ処理部11bに対しスイッチオ
ン信号を送出する(第2図)。
In addition, a voltage detection circuit la provided on the output side of the photovoltaic element
2 sends a switch-on signal to the data processing section 11b only when the output voltage of the PVD is a constant square wave voltage as described later (FIG. 2).

データ処理部1bは、マイクロプロセッサ1b+の周辺
にRAM、FROM、POMといったメモリが配置され
データを処理する。
The data processing unit 1b includes memories such as RAM, FROM, and POM arranged around the microprocessor 1b+, and processes data.

データ入出力ボート1cは、フォトダイオードPDと発
光ダイオードLEDから成り、上記データ処理部1bか
らのデータを発光ダイオードI、f!D・によって光に
変換して出力すると共に端末インタフェース2から送ら
れて来た光データをフォトダイオードPDにより電気に
変換する。尚カード側データ入出力ポートICと、端末
インターフェイス側入出力ポート2Cで、LED−PD
の組合せは、入出力2組ずつとなっているが、データの
入出力の必要数に応じて適当な値に設定される。
The data input/output boat 1c consists of a photodiode PD and a light emitting diode LED, and transmits data from the data processing section 1b to the light emitting diodes I, f! At the same time, the optical data sent from the terminal interface 2 is converted into electricity by the photodiode PD. In addition, the LED-PD is connected to the card side data input/output port IC and the terminal interface side input/output port 2C.
The combinations are two sets each for input and output, and are set to appropriate values depending on the required number of data inputs and outputs.

一方端末インタフェース2は、上記光ICカード1と外
部回路との相互接続機能を承り、光源2aとそれに接続
された光量変調器2aいデータ処理部2b及びデータ入
出力ボート2Cから成る。
On the other hand, the terminal interface 2 has a function of interconnecting the optical IC card 1 with an external circuit, and is composed of a light source 2a, a light intensity modulator 2a connected thereto, a data processing section 2b, and a data input/output board 2C.

光源2aは、白色ランプ等で上述した光ICカード1の
受光部1aに対し光パワーL Pを供給する。また光量
変調器2a+は上記光パワーLPが所定の時間だけ供給
されるように光源2aに対して時間的な変調をかける装
置である。
The light source 2a is a white lamp or the like and supplies optical power LP to the light receiving section 1a of the optical IC card 1 described above. The light amount modulator 2a+ is a device that temporally modulates the light source 2a so that the optical power LP is supplied for a predetermined period of time.

上記の構成を有する本発明カード1は、次のように動作
する。
The card 1 of the present invention having the above configuration operates as follows.

先ず、第2図(A)に示す時間幅τ。、振幅va  V
b、周期Tの矩形状パルス電圧■。を、受光部1aの光
起電素子1a+が出力するように、端末インタフェース
2の光量変調器2a、を予め調整しておく。
First, the time width τ shown in FIG. 2(A). , amplitude va V
b, rectangular pulse voltage with period T; The light amount modulator 2a of the terminal interface 2 is adjusted in advance so that the photovoltaic element 1a+ of the light receiving section 1a outputs the following.

従って電圧検出回路1a2からみれば、上記パルス電圧
v0が入力となる。
Therefore, from the perspective of the voltage detection circuit 1a2, the pulse voltage v0 becomes the input.

上記電圧V。を入力した電圧検出回路1a、は、閾値V
Sで■。を、回路内に設けた論理素子のオン−オフレベ
ルの電圧V+(τ、=τ。)に変化する(第2図(B)
)。
The above voltage V. The voltage detection circuit 1a which inputs the threshold value V
■ in S. changes to the on-off level voltage V+ (τ, = τ) of the logic element provided in the circuit (Figure 2 (B)
).

次に回路1a、は、上記V、の立上り時tO+ t2+
t4・・・を基準とした時間幅τ2の電圧■2を生成す
ると共にif V 2の立上り時tll+t2.t4・
・・を基準として時間幅τ、の電圧v3を生成する(第
2図(C)、 (D) )。尚第2図(D)において、
各パルスの高さが異なっているが、これは各パルスの立
上り、立下りを明確にするためで、実際には等しい高さ
である。
Next, circuit 1a, at the rise of the above V, tO+ t2+
t4... is generated with a time width τ2 as a reference, and at the rise of if V2, tll+t2. t4・
... is used as a reference to generate a voltage v3 with a time width τ (Fig. 2 (C) and (D)). In addition, in Figure 2 (D),
The heights of each pulse are different, but this is to make the rise and fall of each pulse clear; in reality, they are the same height.

ここで、τ2.τ3と上記入力電圧V。の周期Tとの関
係はτ2〈T〈τ3である。また電圧■2の立上り時t
O+t2+t4・・・は入力端子v0の立上り時に一致
しているが、このV2の立上り時にv3も立上ってしか
もこのV3の時間幅τ、は上述した入力電圧周期Tより
も大である。
Here, τ2. τ3 and the above input voltage V. The relationship between T and the period T is τ2<T<τ3. Also, at the rise of voltage ■2 t
O+t2+t4... coincides with the rise of the input terminal v0, but when V2 rises, v3 also rises, and the time width τ of V3 is larger than the input voltage cycle T described above.

従って、電圧■3は、その時間幅τ3が入力電圧周期T
より長い限り、入力電圧■。が継続する間は、第2図(
D)に示すように連続したパルス波となる。
Therefore, voltage ■3 has a time width τ3 of input voltage period T
■ As long as the input voltage is longer. As long as continues, Figure 2 (
It becomes a continuous pulse wave as shown in D).

このため、電圧vllがtoを基準としである一定時間
Mだけ続いた場合に電圧■4のスイッチオン信号Sをデ
ータ処理部1bに向かって発信するように設定すれば(
第2図(E)) 、スイッチSWはオンしマイクロプロ
セッサ1b+はRAMとFROMにアクセス可能となる
(第1図)。
Therefore, if the switch-on signal S of voltage 4 is set to be transmitted to the data processing unit 1b when the voltage vll continues for a certain period of time M with to as a reference, (
(FIG. 2(E)), the switch SW is turned on and the microprocessor 1b+ can access the RAM and FROM (FIG. 1).

このスイッチオン信号Sとは独立に、光起電素子1a+
からは上述した光起電効果により光から電気に変換され
たエネルギが、電力として直接にデータ処理部1bとデ
ータ入出カポ−1−ICへ既に供給されている。
Independently of this switch-on signal S, the photovoltaic element 1a+
The energy converted from light to electricity by the above-mentioned photovoltaic effect has already been directly supplied as electric power to the data processing section 1b and the data input/output capo-1-IC.

このため、光ICカード1と端末インタフェース2間で
データの授受が行われる。
Therefore, data is exchanged between the optical IC card 1 and the terminal interface 2.

しかし、光ICカード1を使用しない場合には、光量変
調器2a、を調整しないので受光部1aの光起電素子1
a、は上記電圧■。(第2図(A))以外の電圧を出力
する。
However, when the optical IC card 1 is not used, the light intensity modulator 2a is not adjusted, so the photovoltaic element 1 of the light receiving section 1a is
a, is the above voltage ■. A voltage other than that shown in FIG. 2 (A) is output.

例えば、入力電圧の周期Tが、第3図(A)に示すよう
にて2 (第3図(C))より小さい場合は、最初の■
2が立ち下がらないうちに次のVoが入力される。
For example, if the period T of the input voltage is smaller than 2 (Fig. 3 (C)) as shown in Fig. 3 (A), the first
The next Vo is input before 2 falls.

従って、■2は連続したパルスになって、■。Therefore, ■2 becomes a continuous pulse, and ■.

は、■2の最初の立上り時t。において、1つだけ生成
されるに過ぎない(第3図(D))。このためtoから
t、までの所定時間Mが経過する前に■3が立ち下がっ
てしまい、スイッチオン信号Sは生成されない(第3図
(E))。尚第3図(D)の場合も第2図(D)と同じ
理由により、パルスの高さをかえている。
is t at the first rise of ■2. In this case, only one is generated (Fig. 3(D)). Therefore, the signal 3 falls before the predetermined time M from to to t has elapsed, and the switch-on signal S is not generated (FIG. 3(E)). In the case of FIG. 3(D), the height of the pulse is also changed for the same reason as FIG. 2(D).

これとは反対に、入力電圧V0の周期Tが■3の幅τ3
より大きい場合(第4図(A)) 、V2が上記Tと同
じ周期で生成されるため、この■2は断続的に出る(第
4図(C))。従って、■3は最初の■2の立上り時t
0に生成されるだけであり(第4図(D)) 、スイッ
チオン信号Sが生成されるまでに必要な時間MまでV3
が継続しないのでスイッチSWはオンしない。
On the contrary, the period T of the input voltage V0 is the width τ3 of ■3.
If it is larger (FIG. 4(A)), V2 is generated at the same period as T, so this 2 appears intermittently (FIG. 4(C)). Therefore, ■3 is the first rise of ■2 t
0 (Fig. 4 (D)), and V3 until the time M required until the switch-on signal S is generated.
does not continue, so the switch SW is not turned on.

このように、電圧検出回路1a、の入力周期Tがτ2〈
T〈τ3の場合のみスイッチSWはオンしカード1は動
作する。
In this way, the input period T of the voltage detection circuit 1a is τ2<
Only when T<τ3, the switch SW is turned on and the card 1 operates.

太陽光など他の光源からの光パワーが入力し、T〈τ2
 (第3図)又はτ3〈T(第4図)の場合は、カード
1は動作せず、従来のように使用しなくても誤動作する
ことによりメモリの内容が破壊されるという問題点はな
くなる。尚第1図において、電圧検出回路la2にプロ
セッサを設け、データ処理部1b、データ入出力ボート
ICの全ての電源を制御する様にしてもよい。
When optical power from other light sources such as sunlight is input, T〈τ2
(Fig. 3) or τ3<T (Fig. 4), card 1 does not operate, and the problem of memory contents being destroyed due to malfunction even if it is not used as before is eliminated. . In FIG. 1, a processor may be provided in the voltage detection circuit la2 to control all the power supplies of the data processing section 1b and the data input/output port IC.

〔発明の効果〕〔Effect of the invention〕

上記のとおり、本発明によれば、元ICカードには、そ
の受光部を構成する光起電素子の出力側に電圧検出回路
が設けられ該カードとの間でデータの授受を行う端末イ
ンタフェースの光源にその光量を所定の時間だけ調節で
きる光量変調器を接続することにより、光ICカード使
用時には上記光源からの光量が所定量の場合のみの上記
光起電素子の出力電圧変化を検出できるので、光ICカ
ードを使用しないときは内蔵回路は動作せずにメモリ内
容が破壊されることがない。
As described above, according to the present invention, the original IC card is provided with a voltage detection circuit on the output side of the photovoltaic element constituting the light receiving section, and the terminal interface for exchanging data with the card is provided. By connecting a light amount modulator that can adjust the amount of light for a predetermined amount of time to the light source, when using an optical IC card, it is possible to detect changes in the output voltage of the photovoltaic element only when the amount of light from the light source is a predetermined amount. When the optical IC card is not used, the built-in circuit does not operate and the memory contents are not destroyed.

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

第1図は本発明カードの構成図、第2図乃至第4図は第
1図の動作説明図、第5図は従来カードの構成図である
。 1・・・光ICカード、1a・・・受光部、1a+・・
・光量型素子、la2・・・電圧検出回路、1b・・・
データ処理部、Ib、・・・マイクロプロセッサ、1c
・・・データ入出力ボート、2・・・端末インタフェー
ス、2a・・・光源、2a+・・・光m変調器、2b・
・・端末インタフェースデータ処理部、2c・・・端末
インタフェースデータ入出力ポート。
FIG. 1 is a block diagram of a card according to the present invention, FIGS. 2 to 4 are diagrams for explaining the operation of FIG. 1, and FIG. 5 is a block diagram of a conventional card. 1... Optical IC card, 1a... Light receiving section, 1a+...
・Light amount type element, la2...voltage detection circuit, 1b...
Data processing unit, Ib, ... microprocessor, 1c
...Data input/output boat, 2...Terminal interface, 2a...Light source, 2a+...Optical m modulator, 2b.
...Terminal interface data processing unit, 2c...Terminal interface data input/output port.

Claims (1)

【特許請求の範囲】[Claims] 端末インタフェースの光源からの光パワーを受光部を構
成する光起電素子により電力に変換して該電力をマイク
ロプロセッサを有するデータ処理部と上記端末インタフ
ェースとの間でデータを授受するデータ入出力ポート部
へ供給する光ICカードにおいて、上記光起電素子の出
力側には電圧検出回路が設けられていると共に上記デー
タ処理部には上記マイクロプロセッサとそのメモリ間と
の接続スイッチ手段が設けられ、上記電圧検出回路は、
上記端末インタフェースに設置した光量変調器により時
間的変調をかけた上記光源の光パワーに対応した電圧を
入力した場合のみ上記接続スイッチ手段に対してスイッ
チオン信号を送出することを特徴とする光ICカード。
a data input/output port for converting optical power from a light source of the terminal interface into electric power by a photovoltaic element constituting a light receiving section and transmitting and receiving data between a data processing section having a microprocessor and the terminal interface; In the optical IC card supplied to the section, a voltage detection circuit is provided on the output side of the photovoltaic element, and the data processing section is provided with a connection switch means between the microprocessor and its memory, The above voltage detection circuit is
An optical IC that transmits a switch-on signal to the connection switch means only when a voltage corresponding to the optical power of the light source temporally modulated by a light intensity modulator installed at the terminal interface is input. card.
JP59259070A 1984-12-10 1984-12-10 Optical ic card Granted JPS61138388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59259070A JPS61138388A (en) 1984-12-10 1984-12-10 Optical ic card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59259070A JPS61138388A (en) 1984-12-10 1984-12-10 Optical ic card

Publications (2)

Publication Number Publication Date
JPS61138388A true JPS61138388A (en) 1986-06-25
JPH0554157B2 JPH0554157B2 (en) 1993-08-11

Family

ID=17328903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59259070A Granted JPS61138388A (en) 1984-12-10 1984-12-10 Optical ic card

Country Status (1)

Country Link
JP (1) JPS61138388A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6315381A (en) * 1986-07-07 1988-01-22 Mitsubishi Electric Corp Non-contact type reader/writer
JPS63125394A (en) * 1986-11-14 1988-05-28 株式会社日立製作所 Optical ic card
JPS63242686A (en) * 1987-03-31 1988-10-07 松下電器産業株式会社 Ic card
WO1989004526A1 (en) * 1987-11-02 1989-05-18 Fanuc Ltd Ic card
JPH01302486A (en) * 1988-05-30 1989-12-06 Toppan Printing Co Ltd Information card
JPH0341364U (en) * 1989-08-28 1991-04-19
WO1997007479A1 (en) * 1995-08-14 1997-02-27 Gay Freres S.A. Optical signal transmission system for electro-optical tag

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6315381A (en) * 1986-07-07 1988-01-22 Mitsubishi Electric Corp Non-contact type reader/writer
JPS63125394A (en) * 1986-11-14 1988-05-28 株式会社日立製作所 Optical ic card
JPS63242686A (en) * 1987-03-31 1988-10-07 松下電器産業株式会社 Ic card
WO1989004526A1 (en) * 1987-11-02 1989-05-18 Fanuc Ltd Ic card
JPH01302486A (en) * 1988-05-30 1989-12-06 Toppan Printing Co Ltd Information card
JPH0341364U (en) * 1989-08-28 1991-04-19
WO1997007479A1 (en) * 1995-08-14 1997-02-27 Gay Freres S.A. Optical signal transmission system for electro-optical tag

Also Published As

Publication number Publication date
JPH0554157B2 (en) 1993-08-11

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