KR940000301Y1 - Device for checking a reel revolutionary speed in a tape recorder - Google Patents
Device for checking a reel revolutionary speed in a tape recorder Download PDFInfo
- Publication number
- KR940000301Y1 KR940000301Y1 KR2019880004516U KR880004516U KR940000301Y1 KR 940000301 Y1 KR940000301 Y1 KR 940000301Y1 KR 2019880004516 U KR2019880004516 U KR 2019880004516U KR 880004516 U KR880004516 U KR 880004516U KR 940000301 Y1 KR940000301 Y1 KR 940000301Y1
- Authority
- KR
- South Korea
- Prior art keywords
- reel
- output signal
- drive output
- optical coupler
- tape recorder
- Prior art date
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
- G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer
- G11B27/17—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer using electrical sensing means
-
- 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
- G11B15/093—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 driving condition of record carrier, e.g. travel, tape tension
-
- 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
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
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- Optical Transform (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안 장치의 회로도.1 is a circuit diagram of the device of the present invention.
제2도는 종래 릴회전속도 감지장치의 회로도.2 is a circuit diagram of a conventional reel rotation speed detection device.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 광결합기 3 : 버퍼1: optical coupler 3: buffer
4 : 마이크로 프로세서 5 : 반전기4: microprocessor 5: inverter
6 : 릴구동 출력신호 전달수단 7 : 전원 스위칭 제어수단6: reel drive output signal transmission means 7: power supply switching control means
Q1 : 트랜지스터 D2 : 다이오드Q1: Transistor D2: Diode
R1, R2 : 저항R1, R2: resistance
본 고안은 테이프 레코더의 릴회전속도 감지장치에 관한 것으로, 특히 마이크로 프로세서에서 릴회전속도 감지를 위한 펄스 발생부의 공급전원을 제어하도록한 테이프 레코더의 릴회전속도 감지장치에 관한 것이다.The present invention relates to a reel rotation speed detection device of a tape recorder, and more particularly to a reel rotation speed detection device of a tape recorder to control the power supply of the pulse generator for detecting the reel rotation speed in the microprocessor.
종래에는 제2도에서 도시된 바와같이 테이프 레코더의 릴축에 부착된 반사원판(31)을 발광다이오드(D1)와 수광트랜지스터(Q1)로 구성된 광결합기(32)의 적정 위치에 설치하고, 별도의 전워(B+)을 광결합기(32)에 인가하도록 구성한 상탱서 릴이 회전됨과 동시에 반사원판(31)이 회전되면 반사원판(31)의 반사부분(31a)에서 반사된 발광다이오드(D1)의 빛을 수광트랜지스터(Q1)에서 수광하여 펄스신호를 발생한다.Conventionally, as shown in FIG. 2, a reflective disc 31 attached to a reel shaft of a tape recorder is installed at an appropriate position of an optical coupler 32 composed of a light emitting diode D1 and a light receiving transistor Q1, and is provided separately. When the upper tank reel configured to apply the electric power B + to the optical coupler 32 is rotated and the reflective disc 31 is rotated, the light emitting diode D1 reflected by the reflective part 31a of the reflective disc 31 is rotated. Light is received by the light receiving transistor Q1 to generate a pulse signal.
이러한 펄스신호는 버퍼(33)를 통하여 마이크로 프로세서(34)의 릴펄스 입력단에 인가시켜 마이크로 프로세서(34)가 릴펄스를 카운트하도록 되어 있으나, 이러한 종래의 장치는 실제로 릴모터의 회전여부에 관계없이 즉, 반사원판(31)의 회전여부에 무관하게 광결합기(32)에는 항상 소정의 전원(B+)이 공급되고 있으므로서 광 결합기(32)의 수명을 단축시키게 되는 문제점이 있을 뿐만 아니라 아울러 불필요한 전력이 소비되는 단점이 있다.The pulse signal is applied to the reel pulse input terminal of the microprocessor 34 through the buffer 33 so that the microprocessor 34 counts the reel pulse. However, such a conventional device is actually used regardless of whether the reel motor is rotated. That is, regardless of whether or not the reflective disk 31 is rotated, the optical coupler 32 is always supplied with a predetermined power B + , which not only shortens the life of the optical coupler 32 but also unnecessary. The disadvantage is that power is consumed.
본 고안은 이와같은 종래의 문제점을 해소하기 위하여 마이크로 프로세서의 릴구동신호를 반전기를 거쳐서 또는 직접적으로 스위칭 트랜지스터의 베이스에 인가하여 릴이 구동될 때에만 릴펄스를 발생하는 펄스발생부(광결합기)에 전원이 인가되도록 하므로서 광결합기의 수명을 연장시키고 불필요한 전력소비를 억제할 수 있도록 한 테이크 레코더의 릴회전속도 감지장치를 제공함에 그 목적이 있는 것으로, 이하 첨부된 도면을 참조하면서 본 고안의 구성을 설명하면 다음과 같다.In order to solve such a conventional problem, the present invention applies a reel driving signal of a microprocessor through an inverter or directly to a base of a switching transistor to generate a reel pulse only when the reel is driven (optical coupler). It is an object of the present invention to provide a reel rotation speed detecting device of a take recorder which can extend the life of the optical coupler and suppress unnecessary power consumption by supplying power to the optical coupler. This is as follows.
제1도를 참조하면 본 고안 장치는 발광다이오드(D1)와 광트랜지스터(Q1)로 구성된 광결합기(1)와, 광결합기(1)의 소정위치에 설치되는 반사원판(2)과, 버퍼(3) 및 마이크로 프로세서(4)로 구성된 테이프 레코더의 릴 회전속도 감지장치에 있어서, 상기 마이크로 프로세서(4)의 릴 정구동 출력신호(A) 및 릴 역구동 출력신호(B)를 전원 스위칭 제어수단(7)에 전달하기 위한 릴구동 출력신호 전달수단(6)과, 상기 릴구동 출력신호 전달수단(6)으로부터의 릴 정구동 출력신호(A) 및 릴 역구동 출렬신호(B)에 따라 별도의 전원(B+)을 광결합기(1)의 전원으로 공급 또는 차단되도록 스위칭 제어시키는 전원 스위칭 제어수단(7)으로 구성된다.Referring to FIG. 1, the device of the present invention includes an optical coupler 1 composed of a light emitting diode D1 and a phototransistor Q1, a reflective disc 2 installed at a predetermined position of the optical coupler 1, and a buffer ( 3) and a reel rotation speed sensing device of a tape recorder composed of a microprocessor (4), wherein the reel forward drive output signal (A) and the reel reverse drive output signal (B) of the microprocessor (4) are connected to a power supply switching control means ( 7) a separate power source according to the reel drive output signal transmission means 6 for transmitting to the reel drive output signal A and the reel reverse drive output signal B from the reel drive output signal transmission means 6; (B + ) is composed of a power supply switching control unit 7 for switching control to supply or cut off to the power supply of the optical coupler (1).
(도면에서 R1, R2, R3는 저항, Q2는 트랜지스터, D2는 다이오드, 5는 반전기이다.)(R1, R2, R3 are resistors, Q2 is a transistor, D2 is a diode, and 5 is an inverter.)
이와같이 구성된 본 고안의 적용효과를 제1도를 참조하여 설명하면, 먼저 마이크로 프로세서(4)에서 릴 정구동 출력신호(A)나 릴 역구동 출력신호(B)가 발생되면 종래와 같이 릴이 구동되어 반사원판(2)이 회전되는 것이므로 이때에는 광결합기(1)의 출력은 버퍼(3)를 통하여 마이크로 프로세서(4)의 입력(IN)에 인가된다.The application effect of the present invention configured as described above will be described with reference to FIG. 1. When the reel forward drive output signal A or the reel reverse drive output signal B is generated in the microprocessor 4, the reel is driven as in the related art. Since the reflection disc 2 is rotated, the output of the optical coupler 1 is applied to the input IN of the microprocessor 4 through the buffer 3.
그런데, 릴을 역구동하기 위한 신호(B)가 마이크로 프로세서(4)의 릴 역구동 출력단에서 발생되면 이러한 신호는 릴의 신호와는 극성이 반대로 된 부극성이므로 릴구동 출력신호 전달수단(6)의 반전기(5)를 통하여 정극성으로 변환하여 전원 스위칭 제어수단(7)의 트랜지스터(Q2)의 베이스에 바이어스 전위로 인가되므로 트랜지스터(Q1)가 온되어서 전원(B+)이 광결합기(1)에 공급된다.However, when the signal B for driving the reel is generated at the reel reverse driving output terminal of the microprocessor 4, the signal is reel drive output signal transmitting means 6 because the signal is negative in polarity opposite to that of the reel signal. since the through of the inverter 5 is converted to a positive polarity is applied to the bias potential to the base of the transistor (Q2) of the power switching control means 7, the transistor (Q1) is turned on be power (B +) is an optical coupler (1 Is supplied.
또한, 마이크로 프로세서(4)의 릴 정구동 출력단에서 정극성 신호(A)가 발생되면 이 신호는 다이오드(D2)를 통하여 트랜지스터(Q2)의 베이스에 바이어스 전위로 인가되어 트랜지스터(Q2)가 온된다.In addition, when the positive signal A is generated at the reel forward drive end of the microprocessor 4, the signal is applied as a bias potential to the base of the transistor Q2 through the diode D2 to turn on the transistor Q2.
따라서 광결합기(1)에는 릴모터가 동작하여 릴이 구동되느 경우에는 트랜지스터(Q2)가 온되어 전원(B+)이 공급되고 릴이 구동되지 않는 경우는 전원(B+)이 공급되지 않게 되는 것이다.Therefore, when the reel is operated and the reel is driven to the optocoupler 1, the transistor Q2 is turned on to supply the power B + , and when the reel is not driven, the power B + is not supplied. will be.
이상에서 설명한 바와같이 본 고안 장치에 의하면 마이크로 프로세서에서 릴을 구동하는 시간동안에만 광결합기에 전원을 공급하여 광결합기를 구동시키므로 광결합기의 구동시간을 꼭 필요한 시간대로 감소시켜 광결합기의 수명을 연장할 수 있으며 불필요한 전력소비를 방지할 수가 있는 효과가 있다.As described above, according to the device of the present invention, the optical coupler is powered by supplying power to the optical coupler only during the time of driving the reel in the microprocessor, thereby reducing the driving time of the optical coupler to the required time period and extending the life of the optical coupler. It is possible to prevent unnecessary power consumption.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880004516U KR940000301Y1 (en) | 1988-03-31 | 1988-03-31 | Device for checking a reel revolutionary speed in a tape recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880004516U KR940000301Y1 (en) | 1988-03-31 | 1988-03-31 | Device for checking a reel revolutionary speed in a tape recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890019944U KR890019944U (en) | 1989-10-05 |
| KR940000301Y1 true KR940000301Y1 (en) | 1994-01-19 |
Family
ID=19273750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019880004516U KR940000301Y1 (en) | 1988-03-31 | 1988-03-31 | Device for checking a reel revolutionary speed in a tape recorder |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940000301Y1 (en) |
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1988
- 1988-03-31 KR KR2019880004516U patent/KR940000301Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR890019944U (en) | 1989-10-05 |
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