JPH031735B2 - - Google Patents
Info
- Publication number
- JPH031735B2 JPH031735B2 JP57086294A JP8629482A JPH031735B2 JP H031735 B2 JPH031735 B2 JP H031735B2 JP 57086294 A JP57086294 A JP 57086294A JP 8629482 A JP8629482 A JP 8629482A JP H031735 B2 JPH031735 B2 JP H031735B2
- Authority
- JP
- Japan
- Prior art keywords
- cassette
- switch
- deck
- magnet
- key
- 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
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
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は
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
It is abbreviated as VTR. ) 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ている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 which cassette they are using, and there have been no known VTRs in which only a specific person can 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、カセツト・ハーフに形状変化または磁
石を設け、VTRのデツキ側にカセツトがデツキ
に挿入されたとき、上記形状変化によつて接点が
開いたままとなるか、または上記磁石によつて接
点が開く、電源回路に設けられたスイツチを有
し、さらに上記スイツチと並列に接続されたキ
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 equipped with a shape changer or a magnet in the cassette half, and when the cassette is inserted into the deck on the deck side of the VTR, the contacts remain open due to the shape change, or the contacts are closed by the magnet. The main feature of the present invention is to have a switch provided in the power supply circuit that opens the switch, and further a key switch connected in parallel with the switch.
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、これらは例示に過
ぎず、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 explained 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.
実施例 １
第１図に示すVTR用のカセツト・ハーフ５に
形状変化１が有り、第２図に示すように、VTR
のデツキ側には上記形状変化１に対応する位置に
スイツチ２が設けられている。図示の例では、形
状変化は凹部で、第３図および第４図にＡ−
A′断面図で示すように、スイツチ２は常時開で、
カセツトがデツキに挿入されたとき、凹部があれ
ばスイツチ２は開いたままであり、凹部がなけれ
ばスイツチは閉じられる。Example 1 The cassette half 5 for VTR shown in FIG. 1 has a shape change 1, and as shown in FIG.
A switch 2 is provided on the deck side at a position corresponding to the shape change 1 described above. In the illustrated example, the shape change is a recess, and in FIGS.
As shown in the A′ cross-sectional view, switch 2 is always open.
When the cassette is inserted into the deck, if there is a recess, the switch 2 remains open; if there is no recess, the switch 2 is closed.
第５図は本発明によるVTRに用いられる電源
回路の回路図で、図中６は定電圧電源を示す。形
状変化１を有するカセツトがデツキに挿入される
と、第３図に示すように、スイツチ２は開いたま
まであり、VTRのデツキに電流は供給されない。
それ故、スイツチ２と並列に接続されたキー・ス
イツチ３をキー４によつてオンしない限り、デツ
キに電流は供給されない。カセツトが形状変化１
を持つていなければ、第４図に示すように、スイ
ツチ２は閉じられ、キー・スイツチ３をキー４で
オンしなくても電流はデツキに供給される。 FIG. 5 is a circuit diagram of a power supply circuit used in a VTR according to the present invention, and 6 in the figure indicates a constant voltage power supply. When a cassette with shape change 1 is inserted into the deck, switch 2 remains open and no current is supplied to the VTR deck, as shown in FIG.
Therefore, no current is supplied to the deck unless key switch 3, which is connected in parallel with switch 2, is turned on by key 4. The cassette changes shape 1
If not, switch 2 is closed and current is supplied to the deck without turning on key switch 3 with key 4, as shown in FIG.
実施例 ２
第６図は本発明の第２の実施の態様によるカセ
ツトの斜視図で、７は永久磁石である。VTRの
デツキ側には、カセツトがデツキに挿入されたと
き、磁石７に対向する位置にリード・スイツチ２
が設けられている。スイツチ２は常時閉で、磁石
７を有しないカセツトがデツキに挿入されたとき
は、第８図に示すように、電流は電源６からスイ
ツチ２を通つてデツキに供給される。それに反し
て、磁石７を有するカセツトがデツキに挿入され
たときは、第７図に示すように、スイツチ２は開
き、電流はキー４を使つてキー・スイツチ３をオ
ンにしたときのみ、電源６からデツキに供給され
る。Embodiment 2 FIG. 6 is a perspective view of a cassette according to a second embodiment of the present invention, and 7 is a permanent magnet. On the deck side of the VTR, there is a reed switch 2 located opposite the magnet 7 when the cassette is inserted into the deck.
is provided. Switch 2 is normally closed, and when a cassette without magnet 7 is inserted into the deck, current is supplied from power supply 6 through switch 2 to the deck, as shown in FIG. On the contrary, when the cassette with magnet 7 is inserted into the deck, as shown in FIG. 6 is supplied to the deck.
以上説明した通り、本発明によれば、特定のカ
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 specific cassette can be played only by a person who owns a key, and a normal cassette can be played even by a person who does not own a key as before.
第１図は本発明の第１の実施の態様によるカセ
ツトの斜視図、第２図は同じ実施の態様によるカ
セツトとスイツチの位置の関係を示す平面図、第
３図は第２図のＡ−A′線に沿つて切つた断面図、
第４図は第３図に対応する普通のカセツトを使用
する場合の断面図、第５図は同じ実施の態様によ
る電源回路の回路図、第６図は本発明の第２の実
施の態様によるカセツトの斜視図、第７図は同じ
実施の態様による電源回路の回路図、第８図は第
７図に対応する普通のカセツトを使用する場合の
回路図である。
１…形状変化、２…スイツチ、３…キー・スイ
ツチ、４…キー、５…カセツト・ハーフ、６…定
電圧電源、７…磁石。
FIG. 1 is a perspective view of a cassette according to a first embodiment of the present invention, FIG. 2 is a plan view showing the positional relationship between the cassette and the switch according to the same embodiment, and FIG. A cross-sectional view taken along line A′,
FIG. 4 is a cross-sectional view when using an ordinary cassette corresponding to FIG. 3, FIG. 5 is a circuit diagram of a power supply circuit according to the same embodiment, and FIG. 6 is a second embodiment of the present invention. A perspective view of the cassette, FIG. 7 is a circuit diagram of a power supply circuit according to the same embodiment, and FIG. 8 is a circuit diagram corresponding to FIG. 7 when an ordinary cassette is used. 1... Shape change, 2... Switch, 3... Key switch, 4... Key, 5... Cassette half, 6... Constant voltage power supply, 7... Magnet.
Claims (1)
フに形状変化または磁石を設け、ビデオ・テー
プ・レコーダのデツキ側に、カセツトがデツキに
挿入されたとき、上記形状変化によつて接点が開
いたままであるか、または磁石により接点が開
く、電源回路に設けられたスイツチを有し、さら
に上記スイツチと並列に接続されたキー・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. Provide a shape changer or magnet in the cassette half of the video tape recorder, and check whether the contacts remain open due to the shape change when the cassette is inserted into the deck of the video tape recorder. or a switch provided in a power supply circuit whose contacts are opened by a magnet, and further comprising a key switch connected in parallel with the switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57086294A JPS58203652A (en) | 1982-05-21 | 1982-05-21 | Video tape recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57086294A JPS58203652A (en) | 1982-05-21 | 1982-05-21 | Video tape recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58203652A JPS58203652A (en) | 1983-11-28 |
| JPH031735B2 true JPH031735B2 (en) | 1991-01-11 |
Family
ID=13882810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57086294A Granted JPS58203652A (en) | 1982-05-21 | 1982-05-21 | Video tape recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58203652A (en) |
-
1982
- 1982-05-21 JP JP57086294A patent/JPS58203652A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58203652A (en) | 1983-11-28 |
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