JP3205465B2 - Magnetic recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus which can be easily operated.

[0002]

2. Description of the Related Art A conventional magnetic recording / reproducing apparatus will be described below. In FIG. 2, 1 is a dedicated input terminal for inputting a signal from an output terminal of a receiver, 2 is a receiving unit for receiving a signal of a broadcast program, and 3 is an input switching unit, which is connected between the dedicated input terminal 1 and the receiving unit 2. Switch the input. Reference numeral 11 denotes a recording / reproducing unit which records the signal selected by the input switching unit 3. 1
Reference numeral 2 denotes a display unit, which indicates that the dedicated input terminal 1 or the receiving unit 2 is selected by the input switching unit. A control unit 13 switches the input switching unit 3, turns on the power of each unit, and sends a recording start command to the recording / reproducing unit 11. Reference numeral 14 denotes a dedicated button for starting the operation of the control unit 13. Reference numeral 15 denotes an output terminal.

The operation of the magnetic recording / reproducing apparatus configured as described above will be described below. First, the output terminal of the receiver and the dedicated input terminal 1 are connected. When recording a broadcast program signal received and imaged by a receiver,
When the dedicated button 14 is pressed, the power of each unit is turned on, and the control unit 13 selects the dedicated input terminal 1 with the input switching unit 3. afterwards,
By sending a recording start command to the recording / reproducing unit 11, the recording / reproducing unit 11 can record a signal received by the receiver. The display unit 12 has a dedicated input terminal 1 in the input switching unit 3.
Alternatively, it indicates that the receiving unit 2 is selected. When the recording operation is completed, the control unit 13 controls the input switching unit 3 to use the dedicated input terminal 1
Is selected, the input switching unit 3 is switched to the receiving unit 2.

[0004]

In the [0005] However the conventional configuration described above, the output terminal of the receiver is input to a dedicated input of the projector selects the external input receiver, recorded and
In such a case, there is a problem that recording is continued even if the signal from the receiver is lost halfway.

The present invention solves the above-mentioned conventional problems. When recording a broadcast program received and imaged by a receiver, a signal from an output terminal of the receiver is pressed by pressing a dedicated button. Magnetic recording that can be input through a dedicated input terminal to detect the presence or absence of a signal during recording and recording, and stop recording if there is no signal for a certain period of time, so that recording can be performed only when there is a signal being imaged by the receiver It is an object to provide a playback device.

[0006]

According to the present invention, there is provided a magnetic recording / reproducing apparatus comprising: a dedicated input terminal for inputting a signal from an output terminal of a receiver; a receiving unit for receiving a broadcast program; An input switching unit that switches between the dedicated input terminal and the input of the receiving unit, a signal detection unit that detects the presence or absence of a signal selected by the input switching unit, and a recording / reproducing device that records a signal selected by the input switching unit Unit, a display unit for indicating that the dedicated input terminal or the receiving unit is selected in the input switching unit, a power supply of the respective units is turned on, a recording start command is sent to the recording / reproducing unit, and the input switching unit is dedicated to the input switching unit. with switching to the input terminal, recording recording in input a signal whether the data of the signal detection unit has a signal-free period detection unit that detects that there is no constant period signal, detecting a signal without then the Symbol <br/> record Recorded in playback section And a control unit sending a stop command, and a magnetic recording and reproducing apparatus having a dedicated button to start the operation of the control unit.

[0007]

With the above arrangement, when the dedicated button is pressed, the input switch connects to the dedicated input terminal. At this time, the signal detector detects the presence or absence of a signal input from the dedicated input terminal,
When there is a signal, the video signal from the output terminal of the receiver is recorded .

[0008] Then, the signal from the output terminal of the receiver while entering a dedicated input pin, there is a certain period signal
For example, by stopping recording, recording can be performed only when there is a signal being visualized by the receiver.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a dedicated input terminal for inputting a signal from a receiver output terminal, 2 denotes a receiving unit for receiving a broadcast program signal, and 3 denotes an input switching unit.
And the input of the receiving unit 2 is switched. 4 is a signal detector,
During recording and recording of the signal selected by the input switching unit 3, the presence or absence of the signal is detected by a sync separation circuit and an integration circuit. For example, when there is a video signal, the signal is detected by obtaining signal presence / absence data at L level and when there is no video signal, H level.
Reference numeral 5 denotes a recording / reproducing unit which records the signal selected by the input switching unit 3. Reference numeral 6 denotes a display unit, which indicates that the input switching unit 3 has selected the dedicated input terminal 1 or the receiving unit 2. Reference numeral 7 denotes a control unit which turns on the power of each unit, sends a recording start command to the recording / reproducing unit 5, switches the input switching unit 3 to the dedicated input terminal 1, and checks whether a signal from the signal detecting unit 4 is being recorded during recording. has a signal-free period detection unit 8 for detecting that a predetermined period signal to input data is not, it sends a recording stop command signal absence detection result in the recording reproducing unit 5.

As an example of the signal non-period detecting unit 8, there is a case of detecting by software or a case of detecting by hardware. In the case of software, it can be realized by means such as no signal, no signal counter up, overflow, no-image period setting, initial setting of no-signal counter, and in the case of hardware, the presence / absence of signal by sync separation circuit and integration circuit And the detection can be performed. Reference numeral 9 denotes a dedicated button for starting the operation of the control unit 7. An output terminal 10 outputs a signal input or output from the recording / reproducing unit.

The operation of the magnetic recording / reproducing apparatus configured as described above will be described with reference to FIG. First, an output terminal for outputting a signal visualized by the receiver and the dedicated input terminal 1 are connected. Next, when the dedicated button 9 is pressed, the power of each unit is turned on, and the input switching unit 3 selects the dedicated input terminal 1 and sends a recording start command to the recording / reproducing unit 5 by the control unit 7. After that, recording starts. The signal detection unit 4 detects the presence or absence of a signal recorded and recorded, and sends the signal to the control unit 7. Control unit 7
It stops the detection result <br/> recording sends a recording stop instruction to the playback unit 5 record the recording from no fixed period signal by the signal whether the data type the signal-free period detection unit 8 from the signal detection unit 4. At this time, the display unit 6 indicates that the dedicated input terminal 1 or the receiving unit 2 has been selected by the input switching unit. In addition, the present invention provides a magnetic disk device, a magnetic tape device,
It can also be applied to digital magnetic recording devices and optical disk devices that can record video signals.

[0012]

According to the present invention, the signal of the receiver output terminal is input to the dedicated input terminal by pressing the dedicated button, and the presence or absence of the signal during the recording is detected. If there is no signal for a certain period, the recording is stopped. Thus, it is possible to realize an excellent magnetic recording / reproducing apparatus capable of recording only when an image is formed by a receiver.

[Brief description of the drawings]

FIG. 1 is a block diagram of a magnetic recording / reproducing apparatus according to the present invention.

FIG. 2 is a block diagram of a conventional magnetic recording / reproducing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dedicated input terminal 2 Receiving part 3 Input switching part 4 Signal detecting part 5 Recording / reproducing part 6 Display part 7 Control part 8 No-signal period detecting part 9 Dedicated button 10 Output terminal

Claims (1)

(57) [Claims] A dedicated input terminal for inputting a signal from an output terminal of a receiver; a receiving unit for receiving a broadcast program; an input switching unit for switching between the dedicated input terminal and an input of the receiving unit; A signal detection unit that detects the presence or absence of a signal selected by the unit, a recording / reproducing unit that records the signal selected by the input switching unit, and the dedicated input terminal or the receiving unit selected by the input switching unit. A display unit indicating that the power of each unit is turned on, a recording start command is sent to the recording / reproducing unit, the input switching unit is switched to the dedicated input terminal, and the signal presence / absence data of the signal detection unit is input during recording / recording. It has a signal no-period detection unit that detects that there is no signal for a certain period, and has a control unit that sends a recording stop command to the recording and playback unit when it detects no signal, and a dedicated button that starts the operation of the control unit Was it A magnetic recording / reproducing apparatus characterized by the above-mentioned.