JPH031736B2 - - Google Patents
Info
- Publication number
- JPH031736B2 JPH031736B2 JP57093871A JP9387182A JPH031736B2 JP H031736 B2 JPH031736 B2 JP H031736B2 JP 57093871 A JP57093871 A JP 57093871A JP 9387182 A JP9387182 A JP 9387182A JP H031736 B2 JPH031736 B2 JP H031736B2
- Authority
- JP
- Japan
- Prior art keywords
- cassette
- light emitting
- relay
- light receiving
- vtr
- 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.)
- Expired - Lifetime
Links
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
- G11B15/06—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape
- G11B15/08—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape by photoelectric sensing
Description
【発明の詳細な説明】
本発明は複数の人によつて使用されるビデオ・
テープ・レコーダ（以下本明細書においてVTR
と略称する。）に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides video
Tape recorder (hereinafter referred to as VTR)
It is abbreviated as. ) regarding.
従来、VTRは誰がどのカセツトを用いてもそ
のカセツトに収められたソフトを再生できるよう
に構成されており、特定のカセツトを特定の人し
か再生できないVTRは知られていなかつた。 Conventionally, VTRs have been constructed so that anyone can play the software stored in that cassette, no matter what cassette they use, and no VTR has been known that allows only certain people to play a specific cassette.
本発明の目的は、普通のカセツトは従来通り誰
でも再生できるが、特定のカセツトはキーを所有
する特定の人しか再生できないVTRを提供する
ことである。 An object of the present invention is to provide a VTR in which ordinary cassettes can be played by anyone as before, but specific cassettes can only be played by a specific person who owns a key.
上記目的を達成するために、本発明による
VTRは、VTRのカセツト・ハーフに反射板を設
け、VTRのデツキ側に発光部、受光部および電
源回路に設けられたリレーとを含む制御回路を有
し、上記反射板、発光部および受光部は、カセツ
トがデツキに挿入されたとき、発光部から出た光
が反射板によつて反射されて丁度受光部にはいる
ような位置にあり、上記制御回路は、その時発生
する電気信号によつて上記リレーの接点が開くよ
うに構成され、さらに上記リレーの接点と並列に
設けられたキー・スイツチを有することを要旨と
する。 In order to achieve the above object, the present invention
A VTR is provided with a reflector on the cassette half of the VTR, and has a control circuit on the deck side of the VTR that includes a light emitting section, a light receiving section, and a relay provided in the power circuit. is in such a position that when the cassette is inserted into the deck, the light emitted from the light emitting part is reflected by the reflector and just enters the light receiving part, and the control circuit is controlled by the electrical signal generated at that time. The main feature of the present invention is to have a key switch which is configured such that the contacts of the relay are opened when the relay contacts open, and further includes a key switch provided in parallel with the contacts of the relay.
以下に附図を参照しながら、実施例を用いて本
発明を一層詳細に説明するが、これは例示に過ぎ
す、本発明の枠を越えることなしにいろいろの変
形や改良があり得ることは勿論である。 The present invention will be described in more detail below using examples with reference to the accompanying drawings, but these are merely illustrative, and it goes without saying that various modifications and improvements may be made without going beyond the scope of the present invention. It is.
第１図に示すVTR用のカセツト・ハーフ４に
反射板１が設けられ、第２図に示すようにVTR
側に発光部２と受光部３を設け、カセツト４がデ
ツキに挿入された時、発光部２を出た光が反射板
１によつて反射され、受光部３にはいるように取
りつけられる。第３図は本発明によるVTRに用
いられる制御回路の回路図で、図中８は定電圧電
源を示し、発光部２は例えば発光ダイオードで構
成され、受光部３は例えばフオトトランジスタで
構成される。反射板を有するカセツトがデツキに
挿入されると、発光部２を出た光は受光部に到達
し、そのようにして得られる電気信号は増幅器９
で増幅され、リレー５の接点を開き、VTRデツ
キに電流は供給されない。そこでリレー５の接点
と並列に接続されキー・スイツチ６をキー７によ
つてオンしない限り、VTRデツキに電流は供給
されない。反射板を設けないカセツトの場合に
は、スイツチ５は閉じているので、キー・スイツ
チ６をキー７でオンする必要はない。 A reflector plate 1 is provided on the cassette half 4 for VTR shown in FIG. 1, and as shown in FIG.
A light emitting part 2 and a light receiving part 3 are provided on the side, and when a cassette 4 is inserted into a deck, the light emitted from the light emitting part 2 is reflected by a reflecting plate 1 and is attached to the light receiving part 3. FIG. 3 is a circuit diagram of a control circuit used in a VTR according to the present invention, in which reference numeral 8 indicates a constant voltage power supply, the light emitting section 2 is composed of, for example, a light emitting diode, and the light receiving section 3 is composed of, for example, a phototransistor. . When a cassette with a reflector is inserted into the deck, the light emitted from the light emitting section 2 reaches the light receiving section, and the electrical signal thus obtained is sent to the amplifier 9.
The current is amplified by the voltage, opens the contact of relay 5, and no current is supplied to the VTR deck. Therefore, unless the key switch 6 connected in parallel with the contacts of the relay 5 is turned on by the key 7, no current is supplied to the VTR deck. In the case of a cassette without a reflector, the switch 5 is closed, so there is no need to turn on the key switch 6 with the key 7.
以上説明した通り、本発明によれば、反射板を
有するカセツトはキーを所有する者のみが再生す
ることができ、普通のカセツトは従来通り、キー
を所有しない者でも再生することができる。 As explained above, according to the present invention, a cassette with a reflector can be played only by a person who owns the key, and an ordinary cassette can be played even by a person who does not have a key, as in the past.
第１図は本発明によるVTRで使用されるカセ
ツトの斜視図、第２図は本発明によるVTRの、
一部切り開かれたカセツトを受光部と発光部の位
置の関係を示すための平面図、第３図は本発明に
よるVTRに用いられる制御回路の回路図である。
１…反射板、２…発光部、３…受光部、４…カ
セツト・ハーフ、５…リレー、６…キー・スイツ
チ、７…キー、８…定電圧電源、９…増幅器。
FIG. 1 is a perspective view of a cassette used in a VTR according to the present invention, and FIG. 2 is a perspective view of a cassette used in a VTR according to the present invention.
FIG. 3 is a plan view showing the positional relationship of the light receiving section and the light emitting section of the cassette with a portion cut open, and FIG. 3 is a circuit diagram of a control circuit used in the VTR according to the present invention. DESCRIPTION OF SYMBOLS 1... Reflection plate, 2... Light emitting part, 3... Light receiving part, 4... Cassette half, 5... Relay, 6... Key switch, 7... Key, 8... Constant voltage power supply, 9... Amplifier.
Claims (1)
フに反射板を設け、ビデオ・テープ・レコーダの
デツキ側に発光部、受光部、および電源回路に設
けられたリレーとを含む制御回路を有し、上記反
射板、発光部および受光部は、カセツトがデツキ
に挿入されたとき、発光部から出た光が反射板に
よつて反射されて丁度受光部にはいれるような位
置にあり、上記制御回路は、その時発生する電気
信号によつて上記リレーの接点が開くように構成
され、さらに上記リレーの接点と並列に設けられ
たキー・スイツチを有することを特徴とするビデ
オ・テープ・レコーダ。1 A reflective plate is provided on the cassette half of the video tape recorder, and a control circuit including a light emitting part, a light receiving part, and a relay provided in the power supply circuit is provided on the deck side of the video tape recorder, The plate, the light emitting section, and the light receiving section are located at such a position that when the cassette is inserted into the deck, the light emitted from the light emitting section is reflected by the reflecting plate and just enters the light receiving section. A video tape recorder characterized in that the contacts of the relay are opened by an electrical signal generated at that time, and further includes a key switch provided in parallel with the contacts of the relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57093871A JPS58211347A (en) | 1982-06-01 | 1982-06-01 | Video tape recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57093871A JPS58211347A (en) | 1982-06-01 | 1982-06-01 | Video tape recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58211347A JPS58211347A (en) | 1983-12-08 |
| JPH031736B2 true JPH031736B2 (en) | 1991-01-11 |
Family
ID=14094517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57093871A Granted JPS58211347A (en) | 1982-06-01 | 1982-06-01 | Video tape recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58211347A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH056631Y2 (en) * | 1984-12-15 | 1993-02-19 |
-
1982
- 1982-06-01 JP JP57093871A patent/JPS58211347A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58211347A (en) | 1983-12-08 |
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