JPH11185320A - Video reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video reproducing device capable of easily performing the holding and changing operation of a reproducing speed regardless of the size of a rotation operating member for reproduction. SOLUTION: This device is provided with a microcomputer (detecting means, control means) for detecting the rotating speed and the rotating direction of a switch 10 of a rotation operating part and controlling the relative position of a recording medium and a reproducing head according to the rotation detected output of the rotation operating member, just after an operation mode is shifted in accordance with the rotation detected output, control information before the shift is initialized and the control information of the current operation mode is held until the mode is shifted to an operation mode complied with the next different rotation detecting output.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video reproducing apparatus for a recording medium suitable for controlling a plurality of coarse and fine reproduction modes and an image non-reproduction mode in an image reproduction mode of a VTR, for example. It is.

[0002]

2. Description of the Related Art Conventionally, for example, a tape recorder (VT)
In R), with respect to fine-tuning control in the image playback mode, frame advance or playback speed is performed according to the rotation speed of a dial (a rotatable operation member) that is called a jog dial, and frame advance is performed based on the direction of rotation. And controlling the direction of playback.

[0003]

However, in the conventional video reproducing apparatus as described above, since the reproducing speed is determined by the rotational speed, the dial is operated at the same rotational speed to maintain the reproducing speed. In the case where the above-mentioned dial is further equipped with, for example, a video camera (integrated VTR), the number of dials to be operated is reduced by downsizing of the video camera. There is a problem that it is almost impossible for the user to do so.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides an image reproducing apparatus which can easily maintain or change the reproducing speed even if the rotating operation member becomes small. The purpose is to:

[0005]

The video reproducing apparatus according to the present invention is constructed as follows.

(1) A rotary operation member for performing reproduction, detection means for detecting the rotation speed and rotation direction of the rotary operation member, and a rotation detection output of the rotary operation member for detecting a relative position between a recording medium and a reproducing head. Immediately after the operation mode shifts according to the rotation detection output, initializes the control information before the shift, and shifts to the operation mode according to the next different rotation detection output. Until the control information of the current operation mode is retained.

(2) A rotary operation member for performing reproduction, detection means for detecting the rotation speed and rotation direction of the rotary operation member, and a reproduction control based on a reproduction information address of the recording medium, the rotation detection of the rotary operation member Control means for controlling according to the output, immediately after the operation mode shifts according to the rotation detection output, initializes the control information before the shift, and sets the operation mode according to the next different rotation detection output. The control information of the current operation mode is retained until the transition.

(3) In the video reproducing apparatus according to the above (1) or (2), the operation mode is power on / off, image reproducing mode or image non-reproducing mode, and the image reproducing mode is coarse or fine. Multiple playback modes.

(4) In the video reproducing apparatus of (1) or (2), reproduction is performed from a tape-shaped recording medium.

(5) In the video reproducing apparatus of (1) or (2), reproduction is performed from a disk-shaped recording medium.

(6) In the video reproducing apparatus of (2), the recording medium is a memory.

(7) In the video reproducing apparatus according to the above (1) or (2), the detection of the rotation direction of the rotary operation member is performed by detecting a rotation detection signal at a constant period by an interrupt function.

(8) In the video reproducing apparatus according to the above (1) or (2), the rotation speed of the rotary operation member is detected by detecting a rotation direction by detecting a rotation detection signal at a constant cycle by an interrupt function. The detection is performed by calculating the total time between the plurality of detected rotation detection signals.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a main configuration of a video camera (camera integrated VTR) according to the present invention. In the figure, reference numeral 4 denotes a system control for controlling the servo and each unit, and has a microcomputer 6.

1 is an imaging unit for converting a subject into a video signal;
2 is a video signal processing unit, 5 is a mechanical deck unit that records a signal processed by the video signal processing unit 2 on a magnetic tape as a recording medium and reproduces a signal recorded on the magnetic tape, 3 is a video signal processing unit 2 An EVE unit for monitoring the video signal processed by the control unit; 7, a reproduction switch;
Is a stop stitch, 9 is a pause switch, 10 is a rotation operation switch that is a rotation operation member that can be rotated to perform forward or reverse reproduction from a recording medium, and 11 is a remote control signal receiving unit.

In the above configuration, the microcomputer 6 controls the rotation and the rotation direction of the rotary operation switch 10, and controls and reproduces the recording medium according to the rotation detection output that detects the relative position between the recording medium and the reproducing head. The control means controls the reproduction control based on the information address in accordance with the detected rotation detection output.

FIG. 2 is an explanatory diagram showing an example of mode transition when the reproduction mode is maintained when the rotation operation switch 10 is not rotated (direction change). The predetermined reproduction mode is maintained until a predetermined rotation speed is reached. It shows the situation.

FIG. 3 is an explanatory diagram showing an example of mode transition when the rotation direction of the rotary operation switch 10 is changed. When the rotation direction change of the rotary operation switch 10 is detected, the reproduction direction is changed at the same speed. Is shown.

FIG. 4 is a view showing the direction of rotation of the rotary operation switch 10. The detection signals A and B are output each time the rotary operation switch 10 is rotated 30 degrees clockwise or counterclockwise.

FIGS. 5 and 6 show a method of detecting the rotation direction of the rotary operation switch 10 based on the detection signals A and B described above. The detection of the detection signals A and B is performed at a constant period by an external signal interrupt function of the microcomputer 6 or a timer interrupt function (not shown). In the detection method shown in FIG. 5, when the detection signal A changes from the Off state to On while the detection signal A is in the On state, the rotation operation switch 10 is turned on.
Is a clockwise rotation (FIG. 5A),
When the detection signal B changes from the Off state to the On state when the detection signal B is in the On state, it is detected that the rotary switch 10 is rotating counterclockwise (FIG. 5B).

In the detection method shown in FIG. 6, since the detection signal B is in the OFF state at the time of the rising edge of the detection signal A, it is detected that the rotary operation switch 10 is rotating clockwise (see FIG. )), Since the detection signal B is in the On state at the time of the rising edge of the detection signal A, it is detected that the rotary operation switch 10 is rotating counterclockwise (FIG. 6B).

FIG. 7 is a signal waveform diagram showing a detection method for performing a transition between the reproduction mode and the tape feed mode by detecting the rotation of the rotation operation switch 10 (in the clockwise direction), and FIG. FIG. 7B shows a case where the rotation of the switch 10 is detected once (Type).
Indicates a case where a plurality of rotations of the rotation operation switch 10 are detected and the rotation speed is detected based on a total time of the plurality of detection signals (Type). Table 1 shows the mode transition described above.

[0023]

[Table 1]

FIG. 8 is a flowchart showing a processing operation performed by rotating the rotary operation switch 10 of one embodiment, FIG. 9 is a flowchart showing a rotation detection processing operation of FIG. 8, and FIG. 10 is a flowchart showing a mode transition processing operation of FIG. It is a flowchart shown, and shows the mode transition processing operation by the rotation detection method described above. 8 to 10 are performed by the microcomputer 6 using a program stored in a ROM (not shown).

First, in step s01 of FIG. 8, a rotation detection subroutine is called, and the rotation operation switch 10 is detected. In this process, the rotation detection signal is checked in steps s50 and s51 shown in FIG.
At 52, the rotation direction is clockwise (CW, FWD), and at step s53, the rotation direction is counterclockwise (CCW, Rv).
In step s53, the process branches to steps s54, s55, and s57 according to the value of the detection count, and is shown in the flowchart. As described above, the start / stop of the clock measurement, the setting of the detection count, the determination of the detection Type = Type, and the setting of the rotation speed are performed based on the time measurement value.

If it is determined in steps s50 and s51 that the detection signal does not indicate rotation, the flow branches to s59. Here, the time measurement value is checked and the time measurement value is 200 mSe.
If the value indicates c or more, the time measurement is stopped, the detection count is initialized, and the detection Type = Type is determined. After ending the subroutine in step s55, it is checked in step s02 of FIG. 8 whether rotation has been detected. If rotation has not been detected, the rotation is checked again in step s01. If rotation has been detected in step s02, the flow branches to step s03 to call a mode transition subroutine, in which mode transition is performed based on the rotation detection information.

In the mode transition subroutine, mode transition is performed based on the mode transition table shown in Table 1. In the flowchart of FIG. 10, Slow × 1/1 in the mode transition table.
5 (step s12C) will be described in detail. For other operation modes, the mode transition is performed according to the mode transition table as in the case of Slow × 1/5, so that the description is omitted here. First, in step s11, the operation mode currently in operation is checked. If Slow × １ ／, the flow branches to step S12.

Next, in step s13, the rotation Ty
Pe is checked. If the rotation type is Type, the flow branches to step s14. If the rotation direction obtained by the rotation detection subroutine is counterclockwise, the flow branches to step s15. As shown in the example of the mode transition in FIG.
X 1/5 and the mode transition process is terminated. If the rotation direction is clockwise, the flow branches to step s16, and the operation mode is set to F based on the mode transition table in Table 1.
wdStill, and the mode transition process ends.

In step s13, the rotation type is T
If it is ype, the flow branches to step s17. If the rotation direction obtained by the rotation detection subroutine is counterclockwise, the flow branches to step S18. If it is clockwise, the flow branches to step S19. Is checked, and the operation mode is set to Slow based on the checked rotation speed based on the mode transition table in Table 1.
-× 1/5 (step s20), Slow- × 1 (step s21), Slow- × 10 (step s22),
Slow × 1/5 (step s23), Slow × 1
(Step s24), Slow × 10 (Step s2
5) and the mode transition process ends.

The operation mode to which the mode has been shifted based on the mode transition table in Table 1 is the same as that in step s01 shown in FIG.
Is held unless the rotation is detected in.

In this embodiment, the case where a magnetic tape is used as a recording medium has been described, but a disk-shaped recording medium may be used.

As described above, in this embodiment, the rotation of the rotation operation switch 10 and the rotation speed are detected, and immediately after the operation mode is changed, the control information is initialized, and the control information is initialized according to the next different detection output. By retaining the control information until the control state is shifted to the control state, the operation of maintaining or changing the reproduction speed can be easily performed regardless of the size of the dial.

[0033]

As described above, according to the present invention,
A rotary operation member for performing reproduction, detection means for detecting a rotation speed and a rotation direction of the rotary operation member, and control for controlling a relative position between a recording medium and a reproduction head in accordance with a rotation detection output of the rotary operation member Immediately after the operation mode is shifted according to the rotation detection output, the control information before the shift is initialized, and the current operation mode is shifted to the next operation mode according to the different rotation detection output. Since the control information is stored, there is an effect that the operation of maintaining or changing the reproduction speed can be easily performed regardless of the size of the rotary operation member.

A rotary operation member for performing reproduction,
Detecting means for detecting the rotation speed and direction of rotation of the rotary operating member, and control means for controlling playback control by a playback information address of the recording medium in accordance with the rotation detection output of the rotary operating member; Immediately after the operation mode shifts accordingly, the control information before the shift is initialized,
Since the control information of the current operation mode is held until the operation mode changes to the next operation mode corresponding to the different rotation detection output, the same effect as described above is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main configuration of a video camera according to the present invention.

FIG. 2 is an explanatory diagram showing a mode transition example when a reproduction mode is held when a rotation operation is not performed;

FIG. 3 is an explanatory diagram showing an example of mode transition at the time of a direction change.

FIG. 4 is an explanatory diagram showing a rotation direction of a rotation operation switch.

FIG. 5 is a signal waveform diagram showing a method of detecting a rotation direction of a rotation operation switch.

FIG. 6 is a signal waveform diagram showing a method of detecting a rotation direction of a rotation operation switch.

FIG. 7 is a signal waveform diagram showing a detection method when performing a transition of a reproduction mode / tape feed mode.

FIG. 8 is a flowchart illustrating a processing operation performed by rotation of a rotation operation switch according to an embodiment;

FIG. 9 is a flowchart showing the rotation detection processing operation of FIG. 8;

FIG. 10 is a flowchart showing a mode transition processing operation of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image pickup part 2 Video signal processing part 3 EVF part 4 System control part 5 Mechanical deck part 6 Microcomputer (detection means, control means) 7 Reproduction switch 8 Stop switch 9 Pause switch 10 Rotation operation switch 11 Remote control signal reception part

Claims (8)

[Claims] 1. A rotation operation member for performing reproduction, a detection means for detecting a rotation speed and a rotation direction of the rotation operation member, and a relative position between a recording medium and a reproduction head are output to a rotation detection output of the rotation operation member. Control means for controlling according to the
Immediately after the operation mode changes according to the rotation detection output, the control information before the change is initialized, and the control information of the current operation mode is retained until the operation mode changes to the next operation mode according to the different rotation detection output. A video playback device characterized by: 2. A rotation operation member for performing reproduction, a detecting means for detecting a rotation speed and a rotation direction of the rotation operation member, and a rotation detection output of the rotation operation member for controlling reproduction by a reproduction information address of a recording medium. Immediately after the operation mode shifts according to the rotation detection output, initializes the control information before the shift, and shifts to the operation mode according to the next different rotation detection output. An image reproducing apparatus characterized in that control information of a current operation mode is held until the operation is performed. 3. The operation mode is a power on / off, an image reproduction mode, or an image non-reproduction mode, and the image reproduction mode is a plurality of reproduction modes of coarse adjustment or fine adjustment. 3. The video reproduction device according to 2. 4. The video reproducing apparatus according to claim 1, wherein reproduction is performed from a tape-shaped recording medium. 5. The video reproducing apparatus according to claim 1, wherein reproduction is performed from a disk-shaped recording medium. 6. The video reproducing apparatus according to claim 2, wherein the recording medium is a memory. 7. The video reproducing apparatus according to claim 1, wherein the detection of the rotation direction of the rotation operation member is performed by detecting a rotation detection signal at a fixed period by an interrupt function. 8. The rotation speed of the rotation operation member is detected by detecting a rotation direction by detecting a rotation detection signal at a fixed period by an interrupt function, and calculating a total time between the detected rotation detection signals. 3. The video playback device according to 1 or 2, wherein the video playback is performed by: