JP3482861B2 - 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 reproduces an information signal recorded on a tape at a variable speed, and is particularly effective for use in a device such as a video camera which requires miniaturization. Is.

[0002]

2. Description of the Related Art A conventional magnetic recording / reproducing apparatus will be described below.

FIG. 5 is a perspective view showing a video camera as an example of a conventional magnetic recording / reproducing apparatus, and FIG. 6 is a block diagram showing a structure for variable speed reproduction of an information signal recorded on a tape in the conventional magnetic recording / reproducing apparatus. Is. In FIG. 5, 50
Is a video camera main body, 51 is a display body that is rotatably provided on the video camera main body 50 and has a liquid crystal display unit 55 on one surface thereof, 52 is a speaker that outputs an audio signal reproduced by this device, and 53 is a speaker 52. A second input section comprising a volume that can adjust the volume of the sound output from
Reference numeral a is a volume increasing volume for increasing the volume, and 52b is a volume decreasing volume for decreasing the volume. Reference numeral 56 denotes a first input unit capable of issuing various operation commands for this device,
Although 56a is a play button and 56b is a stop button, there are a fast-forward button and a rewind button in addition to them, but the description thereof is omitted. Reference numeral 57 designates a variable speed mode switching unit capable of shifting to the variable speed reproduction mode by pushing, and 58 designates a variable speed mode switching unit 57.
Is a speed setting unit capable of setting the tape speed for variable speed reproduction after the operation of.

In FIG. 6, 401 is a tape for recording a video / audio signal, 402 is a drum having a head for rotating and recording / reproducing a video / audio signal on the tape 401, and 403 is a tape 401. A tape drive unit that is a tape drive unit that travels at a speed of, for example, a capstan that holds a tape 401 together with a pinch roller and is rotationally controlled by a motor or the like. A control unit 404 is a control unit that controls the rotation speed of the drum 402 and the tape feed speed of the tape drive unit 403.
0 is a variable speed mode switching unit that switches to the variable speed reproduction mode, 411 is a speed setting unit that sets the tape speed during variable speed reproduction, and 405 is also the information input from the variable speed mode switching unit 410 and the speed setting unit 411. A variable speed reproduction operation setting unit for setting speed during variable speed reproduction, and a first input unit 407 for inputting commands corresponding to various operations of the device such as a play button, a stop button, a fast forward button and a rewind button. , 408 is a second input unit 4 which is a volume control button,
Reference numeral 09 is a system control unit that controls the apparatus based on commands input from the first input unit 407 and the second input unit 408.

The operation of the conventional magnetic recording / reproducing apparatus having the above structure will be described below.

First, referring to FIG. 5, the video camera body 5 is shown.
0 has a tape cassette (not shown) loaded therein,
It is possible to take a picture of a subject and record it, or to reproduce a video / audio signal recorded on a tape. During reproduction, by pressing the reproduction button 56a of the first operation unit 56, the video signal recorded on the tape is displayed on the liquid crystal display unit 55, and the audio signal is output from the speaker 52. The volume of the audio signal output from the speaker 52 can be adjusted by operating the second operating unit 53, and the volume is increased by pressing the volume increasing volume 53a, and the volume decreasing volume 53 is displayed.
Pressing b decreases the volume. Here, when performing variable speed reproduction such as double speed reproduction or triple speed reproduction, it is possible to shift to the variable speed mode by pressing the variable speed mode switching unit 57. After the transfer, the speed of the reproducing tape can be changed by pressing the speed setting unit 58.

Next, the operation during variable speed reproduction and the normal operation, which is the other operation, will be described below with reference to FIG.

First, during normal operation, the first input section 407
The operation command such as the reproduction command or the fast-forward command input at is input to the system control unit 409. System control unit 4
The control signal output from 09 is input to the control unit 404. The control unit 404 controls the operations of the drum 402 and the tape drive unit 403 based on the control signal. That is, when a reproduction command is input from the first input unit 407, the drum 402 is rotated at a predetermined rotation speed, the capstan that is a part of the tape drive unit 403 is rotated at a predetermined rotation speed, and the tape is rotated. 401 is run in the direction of arrow A. When a fast-forward command is input, the tape drive unit 40
3 is rotated at a higher speed than that at the time of reproduction, and the tape 401 is run at a higher speed in the direction of arrow A.

Next, the operation of variable speed reproduction will be described. When performing variable speed reproduction, the variable speed mode switching unit 41
Operate 0 to enter the variable speed playback mode. Next, the speed setting unit 411 sets the tape speed during variable speed reproduction. Normally, it can be set to an integral multiple of the tape speed during playback. The control signal output by operating the variable speed mode switching unit 410 and the speed setting unit 411 is input to the variable speed reproduction operation setting unit 405. The variable speed reproduction operation setting unit 405 reads the information, determines operation setting values for the drum 402 and the tape driving unit 403 based on the information, and sends the operation setting values to the control unit 404. Control unit 404
Controls the operation of the drum 402 and the tape drive unit 403 according to the set value sent from the variable speed reproduction operation setting unit 405. That is, when the speed setting unit 411 sets the double speed, the tape 401 is run in the direction of arrow A at a speed twice as fast as that at the time of reproduction.

At the time of reproduction or fast-forward reproduction, the reproduced sound is output from the sound output means such as a speaker provided on the apparatus, and the volume adjustment at that time is controlled by the second input section 4.
08 can be performed.

[0011]

However, in the above-mentioned conventional configuration, since the variable speed mode switching unit 410 and the speed setting unit 411, which are setting means only for performing variable speed reproduction, are provided, it is additionally provided. First for normal operation
Input unit 407 and a second input unit 408 for adjusting the volume. This device has many operation buttons and the like, which deteriorates the operability and provides many operation buttons on the device. Since this is necessary, there is a problem in that it is difficult to reduce the size of the device.

In view of the above problems, the present invention can change to the variable speed mode by using the first input section and the second input section, which have been conventionally provided, so that the device can be downsized and the operability can be improved. An object of the present invention is to provide a magnetic recording / reproducing device which can be improved.

[0013]

In order to solve the above problems, a magnetic recording / reproducing apparatus according to the present invention has a plurality of tables.
A magnetic recording / reproducing apparatus capable of variable speed reproduction in which the playback speed is switched stepwise, and it is possible to adjust the volume of the output sound of this apparatus and the first input means having at least reproduction command means.
A second input means is input by a tape driving means, said input information determining means for determining the operation command input by the first input means, second input means for running the tape at a predetermined speed A switching means that is controlled to be switched based on a discrimination result in the input information discrimination means, to which a control signal corresponding to the operation command is inputted; and a first input means connected to one terminal of the switching means. When a predetermined operation is performed, the mode is changed to a variable speed reproduction mode and variable speed reproduction operation setting means capable of setting a tape speed during variable speed reproduction, and the tape based on the tape speed set by the variable speed reproduction operation setting means A control means for controlling the operation of the drive means is provided, and the tape speed in the variable speed reproduction operation setting means can be changed by operating the second input means during variable speed reproduction.

With such a configuration, the shift to the variable speed mode can be performed by the first input section and the second input section that are conventionally provided, and the size of the device and the operability can be improved. It is an object of the present invention to provide a magnetic recording / reproducing device that can be realized.

[0015]

The invention according to claim 1 of the embodiment of the present invention, there is provided a magnetic recording and reproducing apparatus capable of variable-speed playback to switch the plurality of tape speed stepwise, at least reproduction
First input means having command means and output voice of this device
Second input means capable of adjusting the volume of the tape, tape driving means for running the tape at a predetermined speed, input information determining means for determining the operation command input by the first input means, and the second input means. Switching means that is switch-controlled on the basis of the determination result of the input information determining means to which the control signal corresponding to the operation command input from the input means is input; and the switching means connected to one terminal of the switching means. A variable speed reproduction operation setting means capable of setting a tape speed during variable speed reproduction when a predetermined operation is performed by the first input means, and a tape set by the variable speed reproduction operation setting means. A control means for controlling the operation of the tape drive means based on the speed, and during the variable speed reproduction, the tape speed in the variable speed reproduction operation setting means can be changed by operating the second input means. With this configuration, when the input information determination unit receives a reproduction command from the first input unit during reproduction of the device, the device shifts to the variable speed mode, and in the variable speed mode, the variable speed reproduction operation setting unit. When the volume control command is received from the second input section, the variable speed speed management number is adjusted, and the tape is fed at the speed corresponding to the variable speed speed management number, whereby the variable speed reproduction operation can be performed.

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view of a video camera which is an example of a magnetic recording / reproducing apparatus of the present embodiment, and FIG. 2 is a block diagram showing a configuration of the magnetic recording / reproducing apparatus of the present embodiment. In FIG. 1, 10 is a video camera main body, 11 is a display body that is rotatably provided on the video camera main body 10 and has a liquid crystal display unit 15 on one surface thereof, and 12 is a speaker that outputs an audio signal reproduced by this device. , 13 is a second input unit composed of a volume capable of adjusting the volume of the sound output from the speaker 12, 12a is a volume increasing volume for increasing the volume, and 12b is a volume decreasing volume for decreasing the volume. Here, the second input unit 13 is capable of adjusting the sound volume and operating the variable speed reproduction,
The detailed description will be given later. Reference numeral 16 is a first input section capable of issuing various operation commands of this apparatus, and 16a is a play button,
Although 16b is a stop button, there are other buttons such as a fast-forward button and a rewind button, but the description thereof is omitted.

In FIG. 2, 101 is a tape on which a video / audio signal is recorded, and 102 is a head capable of recording / reproducing a video / audio signal on / from the tape 101 by rotating the tape 101 by a predetermined amount. A drum 103 is a tape drive unit that is a tape drive unit that causes the tape 101 to run at an arbitrary speed, and an example thereof is a capstan that holds the tape 101 and rotates together with a pinch roller. A control unit 104 is a control unit that controls the rotation speed of the drum 102 and a tape feed speed in the tape drive unit 103, and a variable speed reproduction unit 105 is a variable speed reproduction operation setting unit that sets the tape speed during variable speed reproduction. The operation setting unit 106 is a switch that is a switching unit that has two terminals, that is, a terminal 106A and a terminal 106B, and that is switched according to the determination result from the input information determination unit 109.
When connected to the terminal 106B, a variable speed reproduction operation state in which a plurality of tape feed speeds are switched in stages is set, and when connected to the terminal 106A, it is possible to shift to a normal operation state other than the variable speed reproduction. 107 is a play button,
A first input unit, which is a first input unit for inputting commands corresponding to various operations of the device such as a stop button, a fast-forward button, and a rewind button, is an acoustic output unit (such as a speaker) provided in the device (108). (Not shown) is a second input unit that is a second input unit capable of adjusting the output volume. A first volume command for increasing the output volume input from the volume increasing unit and an input from the volume reducing unit. The second volume command for lowering the output volume is composed of a change-over switch or the like capable of switching each. 109 is the first input unit 10
7, an input information discriminating section which is an input information discriminating means for discriminating a command inputted from the terminal 7, and 110 is an output voice of the present apparatus based on a volume control signal from the second input section 108 inputted through the switch 106. A system control unit that controls the volume, and is finally connected to the speaker 12 shown in FIG.

The operation of the magnetic recording / reproducing apparatus of the present embodiment configured as described above will be described below with reference to the drawings.

First, referring to FIG. 1, a video camera body 1
0 has a tape cassette (not shown) loaded therein,
It is possible to take a picture of a subject and record it, or to reproduce a video / audio signal recorded on a tape. By pressing the reproduction button 16a of the first input unit 16 during reproduction, the video signal recorded on the tape is displayed on the liquid crystal display unit 15, and the audio signal is output from the speaker 12. The volume of the audio signal output from the speaker 12 can be adjusted by operating the second input unit 13, and the volume can be increased by pressing the volume increasing volume 13a and the volume decreasing volume 13 can be adjusted.
Pressing b decreases the volume. Here, variable speed reproduction such as double speed reproduction or triple speed reproduction can be performed by operating the second input unit 13 used for volume adjustment.

Next, referring to FIG. 2, the operation during variable speed reproduction and the normal operation which is the other operation will be described below.

First, the operation during normal operation will be described. A desired operation command is input and operated at the first input unit 107. For example, when a reproduction operation is desired, the reproduction button provided on the first input unit 107 is pressed, and when a fast-forward operation is desired, the fast-forward button is pressed. First input unit 10
The input information input in 7 is input to the input information discriminating unit 109 and the variable speed reproduction operation setting unit 105. The input information discriminating unit 109 controls the switching of the switch 106 based on the input information from the first input unit 107, and outputs a control signal to the variable speed reproduction operation setting unit 105. The specific operation will be described later. Switch 10 during normal operation
Reference numeral 6 is connected to the terminal 106B side, and the control signal of the command input from the first input unit 107 passes through the variable speed reproduction operation setting unit 105 and is input to the control unit 104. Here, the variable speed reproduction operation setting unit 105 has stopped its operation.
The control unit 104 controls the operation of the drum 102 and the tape drive unit 103 based on the control signal, and the first input unit 10
The operation corresponding to the command input in 7 is performed. At this time,
The second input unit 108 serves as an input unit for performing volume control, and a volume control signal is input to the system control unit 110 via the switch 106 to output the output volume of a sound output unit (not shown) such as a speaker. Adjustable. That is, the volume of the output audio signal can be adjusted by operating the second input unit 108.

Next, the operation during variable speed reproduction will be described. At the time of variable speed reproduction, it is premised that the present apparatus is in a reproduction state when a reproduction command is first input at the first input unit 107. In other words, enter the sometimes playback command of the playback state, at a time other than play state to enter two consecutive playback command. When the above input is performed, the input information determination unit 109 controls the switch 106 to be connected to the terminal 106A side so that the control signal from the second input unit 108 is input to the variable speed reproduction operation setting unit 105. .
The determination result of the input information determination unit 109 is also input to the variable speed reproduction operation setting unit 105, and the variable speed reproduction operation setting unit 105 enters the operating state. The variable speed reproduction operation setting unit 105 outputs a control signal to the control unit 104, and the control unit 104 controls the operations of the drum 102 and the tape drive unit 103 based on the control signal. The second input unit 108 is composed of two buttons or levers for adjusting the volume, and is used to increase or decrease the volume during normal operation, but accelerates the reproduction speed during variable speed reproduction. Or it becomes possible to perform deceleration operation.

Here, referring to FIG. 3, the input information discriminating section 10 in the case of shifting from the normal operation mode to the variable speed reproduction mode.
The processing in 9 will be described in detail.

FIG. 3 is a flow chart showing the processing operation in the input information discrimination unit 109 in the magnetic recording / reproducing apparatus of this embodiment. In FIG. 3, a process 201 determines whether a command has been input from the first input unit 107 to the input information determination unit 109. If a command has been input, the process proceeds to step 202. If no command has been input, the process ends.
The process 202 determines whether the command input by the first input unit 107 is a reproduction command. If it is a reproduction command, the process proceeds to step 203. If the command is other than the play command, the process proceeds to step 206, and the switch 106 is set to the terminal 106.
Switching to B, the system control unit 110 executes the operation based on the command input in the process 207, and the process ends. On the other hand, in process 203, it is determined whether or not the current state of the apparatus is the reproducing condition, and if it is the reproducing condition, the process proceeds to process 204, the switch 106 is switched to the terminal 106A, and the variable speed speed management number is set to "6" in the process 205.
Is set to (that is, 1 × speed), and the process ends. Here, the tape feeding speed corresponding to the speed control number for variable speed is shown in (Table 1).

[0025]

[Table 1]

If the state is other than the reproduction state in the process 203, the process proceeds to the process 206, the switch 106 is switched to the terminal 106B, and the system control unit 110 determines the command based on the command input in the process 207. Based on the operation, the process ends. As described above, by inputting the reproduction command from the first input unit 107 to the input information discriminating unit 109 during the reproduction operation of the present apparatus, or when the reproduction command is input twice in succession other than the reproduction operation. , It is possible to shift to the variable speed reproduction mode.

Next, the processing in the variable speed reproduction operation setting unit 105 during variable speed reproduction will be described in detail below.

FIG. 4 is a flow chart showing the processing operation in the variable speed reproduction operation setting unit 105 during variable speed reproduction in the magnetic recording / reproducing apparatus of this embodiment. The process 301 determines whether a command is input from the second input unit 108. If the command is input, the process proceeds to step 302, and if not input, the process ends. The process 302 determines whether the input command is a volume control command. If the input command is a volume adjustment command, the process proceeds to step 303, and if it is not a volume adjustment command, the process ends. A process 303 determines whether or not the input volume adjustment command is the first volume command. here,
The first volume command can control the increase of the output volume during the normal operation, and can control the increase of the tape reproduction speed during the variable speed reproduction. If it is the first volume command, the process proceeds to step 304, and one variable speed speed management number is added. That is, the tape feeding speed is controlled to increase. Next, in process 305, it is determined whether or not the variable speed speed management number added by 1 in process 304 is greater than 10. If 10 or less, process 310
Then, the control unit 104 controls the drum 102 and the tape drive unit 103 so that the tape 101 runs at the speed corresponding to the variable speed speed management number. On the other hand, process 3
If it is determined in 05 that the variable speed speed management number is greater than 10, the variable speed speed management number is set to 10 in step 306.
The control unit 1 sets the tape feed speed to the speed corresponding to the variable speed control number 10 in step 310.
At 04, the drum 102 and the tape drive unit 103 are controlled.

When it is determined in the process 303 that the volume adjustment command is other than the first volume command, that is, the second volume command, the process proceeds to a process 307, and the variable speed control number is decremented by one. . That is, the tape feeding speed is controlled so as to decrease. Where the second
The volume command is for controlling the decrease of the output volume during the normal operation and for controlling the deceleration of the tape reproduction speed during the variable speed reproduction. Next, in process 308, process 30
It is determined whether or not the variable speed speed management number subtracted by 7 is smaller than 1. If it is 1 or more, the process proceeds to step 310, and the control unit 1 is caused to run the tape 101 at the tape feeding speed corresponding to the variable speed speed management number.
Reference numeral 04 controls the drum 102 and the tape drive unit 103.
On the other hand, if it is determined in step 308 that the variable speed speed management number is smaller than 1, the variable speed speed management number is set to 1 in step 309, and the tape feed speed is set to the variable speed speed management number in step 310. The control unit 104 controls the drum 102 and the tape drive unit 103 so that the tape feeding speed corresponds to 1.

That is, in the variable speed reproduction mode, the second input section 108 including the volume adjusting means can control the tape speed during the variable speed reproduction. After shifting from the reproduction state to the variable speed reproduction mode, the variable speed speed management number becomes “6”, which is 1 × speed. When the first volume command in the second input unit 108 is input once from this state, the variable speed speed management number becomes "7", and the tape speed is controlled to double speed. After that, similarly, the first volume command of the second input unit 108 is set to 1
Each time it is input, the variable speed speed control number is increased by one, and the tape speed is also increased in accordance with the increase. Further, when the second volume command is input once, the variable speed speed management number is decreased by one, and the tape speed is decreased in accordance with a predetermined multiplication factor.

As described above, according to the present embodiment, in the variable speed reproduction operation setting unit 105, the variable speed management number is adjusted based on the volume adjusting command from the second input unit 108 to change the tape feeding speed. By doing so, variable speed reproduction operation control can be performed without having an input means dedicated to variable speed reproduction.

In the present embodiment, the reproduction button of the first input section 107 is used for switching to the variable speed operation, and the volume control button of the second input section 108 is used for changing the speed during the variable speed reproduction. Although used, no matter which button of each input section is assigned for variable speed reproduction operation, the effect of the present embodiment does not change at all.

In this embodiment, as shown in (Table 1), the speed for variable speed reproduction is set to 10 steps, but at least one kind of speed other than the normal reproduction speed may be set, Thus, the number of stages is not limited to 10.

[0034]

As described above, according to the present invention, it is possible to perform a variable speed reproduction operation without having an input section dedicated to the variable speed reproduction.
The operability can be improved, and the number of operating means can be reduced, so that an excellent effect that the apparatus can be downsized can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a video camera which is an example of a magnetic recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a magnetic recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a processing operation at the time of switching to a variable speed reproduction mode in the embodiment.

FIG. 4 is a flowchart showing a processing operation in a variable speed reproduction mode according to the same embodiment.

FIG. 5 is a perspective view of a video camera which is an example of a conventional magnetic recording / reproducing apparatus.

FIG. 6 is a block diagram showing the configuration of a conventional magnetic recording / reproducing apparatus.

[Explanation of symbols]

103 tape drive 104 control unit 105 Variable speed playback operation setting section 106 switch 107 First Input Section 108 Second input section 109 input information discrimination unit

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Claims (3)

(57) [Claims] 1. A plurality of magnetic recording and reproducing apparatus capable of stepwise switching <br/> variable-speed playback tape speed, reduced
Both of the first input means having a reproduction command means and the device
Second input means capable of adjusting the volume of output sound; tape driving means for running the tape at a predetermined speed; input information determining means for determining an operation command input by the first input means; Switching means that is switch-controlled based on the determination result of the input information determining means, to which the control signal corresponding to the operation command input from the second input means is input, and one of the terminals of the switching means. The first
Variable speed reproduction operation setting means capable of setting a tape speed during variable speed reproduction when a predetermined operation is performed by the input means, and tape speed set by the variable speed reproduction operation setting means Control means for controlling the operation of the tape drive means on the basis of
The magnetic recording / reproducing apparatus is characterized in that the tape speed in the variable speed reproducing operation setting means can be changed by operating the input means. 2. A magnetic recording / reproducing apparatus capable of variable speed reproduction capable of switching a plurality of tape speeds in stages, the first input means having at least a reproduction commanding means, and an output sound of this apparatus. Second control means capable of adjusting the volume of the tape, tape driving means for running the tape at a predetermined speed, input information judging means for judging the command inputted by the first input means, and the second input. a switching means which is switched controlled control signal corresponding to the operation command input is input based on the determination result in the input information determination means unit, the reproduction of the first input means when the present apparatus is reproducing state Command means
Variable speed playback operation setting means capable of setting the tape speed during variable speed playback by shifting to the variable speed playback mode when is operated ,
Control means for controlling the operation of the drum and the tape drive means on the basis of the tape speed set by the variable speed reproduction operation setting means, and a reproduction finger from the first input means.
If the command means is operated,
Device is in the replay state, and the device is in the replay state.
Variable speed playback, if the device can change the tape feed speed
The mode is changed to the volume command from the second input means.
The magnetic recording / reproducing apparatus is characterized in that the speed of the tape driving means can be varied by the variable speed reproducing operation setting section when a command is input . 3. The variable speed reproduction operation setting means controls to increase the tape speed when the volume increasing operation is performed by the second input means, and the tape speed when the volume decreasing operation is performed by the second input means. 3. The magnetic recording / reproducing apparatus according to claim 2, wherein the magnetic recording / reproducing apparatus is controlled so as to decrease.