JPH0362347A - Video reproducing device - Google Patents

Abstract

PURPOSE:To use a shuttle ring even in a general mode by executing normal reproducing at the reference position of the shuttle ring when a change-over switch is operated. CONSTITUTION:The action of the whole mechanism part of a video reproducing device 10 including a servo circuit 26 is controlled by a system controller 12. A jog dial 14 and a jog shuttle including the shuttle ring 16 are provided so that they can be respectively rotated on an identical shaft. When a toggle switch 24 is under an off-state, the shuttle ring 16 specifies respective action modes at the time of an edit mode. Besides, a mode controller 20 decides the respective action modes including still reproducing at the time of the edit mode corresponding to the respective positions of the shuttle ring 16 and corresponding to data outputted by an encoder 22. When the toggle switch 24 is operated, the shuttle ring 16 specifies the respective actions of the general mode and the normal reproducing is executed at the reference position of the shuttle ring 16.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a video playback device, and in particular to a video tape recorder (VTR) Yahideotex, etc., in which a mode can be specified in an editing mode by operating a jog shuttle. Regarding video playback devices such as.

[Prior art]

This type of video playback device is known, for example, from Japanese Patent Application Laid-Open No. 621573.
It is disclosed in Japanese Patent No. 52.

In this video playback device, a shuttle ring in the jog shuttle is used for editing, and normal playback (1x speed playback) is specified using a jog dial or a conventional so-called tact key.

[Problem to be solved by the invention]

If the jog dial is used to specify the normal playback mode, the jog dial simply outputs the relative movement amount as data, so the jog dial must be moved for control, and its operability is not very good.

Furthermore, even when using a normal tact key, both the jog dial and the tact key must be operated, resulting in poor operability.

Therefore, the main object of the present invention is to provide a shuttle ring, which is easier to operate than jog shuttles and tact keys, so that it can be used in general modes other than editing mode, thereby providing a video playback device that is easy to operate. .

[Means to solve the problem]

Simply put, this invention is a video playback device using a jog shuttle having a jog dial and a shuttle ring, in which each mode during editing is specified by data output according to the position of the shuttle ring, and A video playback device that performs still playback when the shuttle ring is in the reference position, the video playback device comprising a changeover switch, and when the changeover switch is operated, normal playback is performed at the reference position of the shuttle ring. be.

[Effect]

In the editing mode, each editing mode is designated by data output according to the position of the shuttle ring. In this case, still playback is performed when the shuttle ring is at the reference position.

On the other hand, when the changeover switch is operated, the shuttle ring function is switched from editing mode to normal playback mode.
Normal playback occurs when the shuttle ring is in the reference position.

[Effects of the Invention] According to the present invention, since the changeover switch is provided, the functions of the shuttle ring can be provided with multiplicity.

Therefore, by using the shuttle ring with good operability, it is possible to set each operation mode in the general mode, which conventionally had to be done manually by operating a jog dial or tact key. Therefore, the operability of the entire video playback device is significantly improved.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

〔Example〕

FIG. 1 is a block diagram showing one embodiment of the present invention.

For example, in a video reproducing apparatus 10 such as a VTR, the operation of the entire mechanism including a servo circuit 26 is controlled by a system controller 12 comprised of, for example, a microcomputer.

A jog shuttle including a jog dial 14 and a shuttle ring 16 are each rotatable on the same axis. The jog dial 14 is a two-phase rotary encoder 1.
Output to 8. The encoder 18 is the jog dial 14
For example, 4-bit control data, which differs depending on the direction and period of the pulses from the mode controller 20, is outputted, and the control data is given to the mode controller 20.

On the other hand, the shuttle ring 16 outputs a signal to the encoder 22 according to the contacts that are closed at every predetermined rotation angle.

The encoder 22 converts a signal output according to the position of the shuttle ring 16 into, for example, 4-bit control data. The converted 4-bit control data is given to the mode controller 20 described above.

The mode controller 2o also includes a shuttle ring 1.
A toggle switch 24 for switching the functions of 6 is connected.

The mode controller 20 is composed of, for example, a microcomputer, and determines each predetermined operation mode of the edit mode and the further mode based on control data output from the jog dial 14 and the shuttle ring 16, that is, the encoders 18 and 22. Therefore, mode designation data is provided from the mode controller 22 to the system controller 12.

The system controller 12 is a mode controller 20
Based on the mode designation data output from the servo circuit 26. Controls the drive mechanism 28 and signal processing device 30. The servo circuit 26 controls the number of rotations of the capstan motor and the rad motor for the rotating drum in response to signals from the system controller 12.

The drive mechanism 28 controls running of a magnetic tape (not shown) for editing and reproduction in response to command signals from the system controller 2 and drive signals from the servo circuit 26.

The video signal obtained from the magnetic tape is processed by the signal processing device 30.
given to. The signal processing device 30 controls slow speed, slow speed, and
Outputs playback signals such as stills and playback signals in normal playback mode to the monitor.

When the toggle switch 24 is in the OFF state, the shuttle ring 16 specifies each operating mode in the edit mode. The position of this shuttle ring is the center and +1 to the right from the center. +2. The encoder 22 outputs data as shown in FIG. 2 and Appendix 1 in accordance with the respective positions of +3°+4 or -1, -2°3, and -4 leftward from the center. Depending on the output, the mode controller 20
From this, the operation modes of still playback, forward slow, forward play, fast cue, high speed fast cue, reverse slow, reverse play, review, and fast review in the editing mode are determined.

When toggle switch 24 is operated, shuttle ring 16 specifies each operation of the further mode.

That is, if the toggle switch 24 is operated, the mode controller 20 selects normal playback, fast cue, high-speed fast cue, review, high-speed Each review operation is specified.

When the shuttle ring 16 is at the center position, the encoder 2
2 outputs data “0OOO” or “1000”,
The normal reproduction operation is specified by the mode controller 22 according to this data.

When the shuttle ring 16 is operated by the +1 or +2 device, the data roo10J or "0110" or "0100" or "ro101" is output, and the mode controller 22 specifies the fast cue operation.

When the shuttle ring 16 is operated by the +3 or +4 device, data roo11J or "0111" or roool, + is output, and the mode controller 2
2 specifies the operation of the high-speed fast queue.

When the shuttle ring 16 is operated to the -1 or -2 position, the data rlo10J or "1110" or "rlloo" or "rllol" is output, and the mode controller 22 specifies the review operation.

When the shuttle ring 16 is operated to the -3 or -4 position, data rl O11, or "1111" or "1001" is output, and the mode controller 22
specifies fast review behavior.

Next, based on the flowchart shown in FIG. 3 and with reference to the block diagram shown in FIG. 1, the operation or operation of the video reproducing apparatus 10 will be described.

When the reproduction mode is confirmed in the first step Sll, the mode controller 22 determines whether the toggle switch 24 has been operated to switch the function of the shuttle ring 16 in step S13. If the toggle switch 24 is not operated, that is, if the function of the shuttle ring 16 is set for editing, the process advances to step S15.

In step S15, it is determined whether the jog dial 14 or the shuttle ring 16 has been operated. When the jog dial 14 is operated, the next step S1
At 7, the mode controller 20 connects the encoder 18
Each operation in the edit mode is specified based on the control data output from the . Therefore, the next step S19
Then, a command signal corresponding to the determined operation is output from the system controller 12 to the servo circuit, drive mechanism 28, and signal processing device 30.

If the shuttle ring 16 is being operated in step S15, it is determined in the next step S21 whether the shuttle ring 16 is being operated, that is, whether it is at the center position or at any other position. If the shuttle ring is being operated, the next step S23
Based on the output of the encoder 22, the mode controller 20 specifies each operation of the editing mode as shown in Appendix 1. Then, the process proceeds to step S19, and the system controller 12 controls the servo circuit 26° drive mechanism 28.
And a command signal for executing each operation of the editing mode determined in step S23 is output to the signal processing device 30.

When it is confirmed in step 321 that the shuttle ring 16 is not operated and is at the center position, in step S25 the mode controller 20 specifies still playback in the edit mode. Therefore, in the next step S19, the system controller 12 sends a command signal to each of the above-mentioned devices 26, 28 to perform still playback.
and output to 30.

If it is determined that the toggle switch 24 is operated in the previous step S13, the function of the shuttle ring 16 has been switched from the editing mode to the general mode. The operation mode determined by the mode controller 20 is not one in the edit mode, but specifies each operation in the general mode shown in Attached Table 2.

Therefore, in step S27, it is determined whether the shuttle ring 16 is being operated, as in the previous step S21. If it is determined that the shuttle ring 16 is being operated and is at a position other than the center position, in step S29, the shuttle ring 16 is moved to a position (+1 to +4 or -1 to -4) as shown in Appendix 2. Accordingly, mode controller 20 specifies the general mode of operation. Then, in a final step 319, the system controller 12 controls each device 26, 28 and 3 to execute each operating mode during its designated general mode.
Outputs a command signal to 0.

If it is determined in step S27 that the shuttle ring 16 is not operated and its position is the center position,
In step 331, the mode controller 20 specifies the normal playback mode, and proceeds to step S19.

In this way, when the toggle switch 24 is not operated, each operation mode in the editing mode is set by each position of the shuttle ring 16, and when the toggle switch 24 is operated, a separate table is set by each position of the shuttle ring 16. Each operation mode of the general mode such as 2 is set.

Table 1 Table 2

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a timing diagram showing the relationship between the position of the shuttle ring and data from the encoder in the embodiment of FIG. 1. FIG. 3 is a flowchart for explaining the operation or operation of the embodiment shown in FIG. In the figure, 12 is a system controller, 14 is a jog dial, 16 is a shuttle ring, 18 and 22 are encoders, 20 is a mode controller, and 24 is a toggle switch.

Claims (1)

[Scope of Claims] A video playback device using a jog shuttle having a jog dial and a shuttle ring, wherein each mode at the time of editing is designated by data output according to the position of the shuttle ring, and the shuttle ring is A video playback device that performs still playback when the shuttle ring is at the reference position, comprising a changeover switch, and when the changeover switch is operated, normal playback is performed at the reference position of the shuttle ring. Device.