JP3113535B2 - Recording / reproducing device having on-screen function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus having an on-screen function for displaying predetermined information such as characters and symbols at an arbitrary position on a display.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a television receiver having a so-called on-screen function for displaying information such as numbers and characters of a receiving channel at an arbitrary position on a display (see Japanese Utility Model Laid-Open No. 1-139680). ), Various recording / reproducing apparatuses having the function have been proposed. The following description is directed to a video tape recorder using a magnetic tape as a recording / reproducing device. A VTR having an on-screen function is, for example, as shown in FIG.
Has an on-screen display switching button (80) on the front side of it, and when displaying information such as characters on the display (5),
The button (80) is turned on. On-screen display switching button (8
(0), a display position moving button (86) is provided.
Every time 6) is pressed, the displayed information (50) moves the display position in the four corners of the display (5) counterclockwise or clockwise as shown in FIG.

[0003]

In the conventional apparatus, even if the display position moving button (86) is operated, the position where the information on the display (5) is displayed is either clockwise or counterclockwise. Move only to. By the way, in recent years, in view of editing functions, etc.,
As shown in FIG. 6, a device provided with a jog dial (4) on the front surface of the device body (1) is used. The dial
(4) is provided to be rotatable in both clockwise and counterclockwise directions. After setting the playback mode of the magnetic tape (not shown) to a pause state, the jog dial (4) is rotated,
The running speed of the magnetic tape can be changed. The applicant has proposed to move the display position of the display (5) for predetermined information by rotating the jog dial (4), and can freely move the information displayed on the display in both left and right directions. An object of the present invention is to provide a recording and reproducing device.

[0004]

[Means for Solving the Problems] A recording / reproducing apparatus is an on-screen IC for displaying predetermined information on a display (5).
(8) a jog dial (4) rotatably provided on the apparatus body (1) and changing a recording or reproducing speed of a recording medium;
The jog dial is operated from outside the device body (1).
A signal to switch whether or not to use (4) for speed change
And a switching means for emitting. Further, the recording / reproducing apparatus determines the rotation direction of the jog dial (4),
The jog dial (4) to change the speed based on the
When it is detected that it is not used, it is displayed on the display (5).
Information display device in the direction of rotation of the jog dial (4).
Discriminating means for issuing a control signal Sc to move in response
(2), connected to the discriminating means (2), the jog dial (4)
Calculate the rotation time to determine the amount of display information movement
Move the information display position every set time
Thus, the count control signal Sd is issued to the discriminating means (2).
Timer counting means (3) .

[0005]

[Operation and Effect] By the operation of the switching means, the jog dial (4) is also used to move the display position of the information on the display (5), and the display position is changed corresponding to the rotation direction of the jog dial (4). Can be moved. Therefore,
The disadvantage that the display position can be moved only in one direction as in the related art can be solved. Further, the information to be displayed and moved moves at a set time interval. Therefore, even if the jog dial (4) is rotated at a high speed, the display
(5) The time interval at which the display information moves above is constant, and the display information is easy to see.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, as is well known, a rotating cylinder (9) is provided in an apparatus body (1) connected to a display (5).
0), a recording / reproducing mechanism (9) including a capstan (91) for transporting a magnetic tape (6) is provided, and a front face provided with various operation buttons is provided on a front face of the apparatus main body (1). panel
(10) is attached. As shown in FIG. 2, a jog dial (4) is provided on the front right side of the front panel (10), and the dial (4) has a recess provided near the circumference.
A finger is inserted into (4a) and the finger is rotated. Jog dial (4) on front panel (10) and cassette insertion slot (11)
Between them, an on-screen display switching button (80) is provided.

The jog dial (4) is used as a variable speed dial for moving the magnetic tape (6) and a dial for moving the position of information displayed by an on-screen function, and which dial is used as the dial (4). It is switched by operating a switching button (40) provided on the upper right side of. If the switching button (40) is operated during reproduction of the magnetic tape (6), the running mode becomes the pause mode. In this state, if the jog dial (4) is rotated clockwise, the magnetic tape (6) It is possible to change the running speed in the playback direction of the magnetic tape.
(6) The speed in the reverse reproduction direction can be changed.

If the on-screen display switching button (80) of the front panel (10) is operated without operating the switching button (40), a predetermined value is displayed on the display (5) connected to the apparatus body (1). The character and number information (50) is displayed. When the jog dial (4) is rotated in this state, as shown in FIG. 7, the displayed characters and the like are displayed at the four corners of the display (5) in the same direction as the rotation direction of the jog dial (4) every 400 ms. Moving. In FIG. 7, the character displayed on the display (5) is "10", which is a reception channel, and the space between the corners of the display (5) on which the character and the like move is hereinafter referred to as a pitch. The reason why the time is set to 400 ms is that the displayed characters and the like can be visually checked, and the time can be changed. The types of characters and numbers displayed are
It can be changed by inputting by the operator from the front panel (10).

(Circuit Configuration) The circuit configuration inside the apparatus main body (1) is shown below. Inputs from the switching button (40) and the jog dial (4) are input to the control microcomputer (20) as shown in FIG. The information input from the jog dial (4) includes rotation information such as the rotation speed of the jog dial (4). The control microcomputer (20) includes a speed control means (70) having a servo function for controlling the running speed of the magnetic tape (6), and an image output control means (7) for transmitting a video signal between the rotating cylinder (90). ) Is connected so as to be switchable. The image output control means (7) is connected to an on-screen IC (8) for defining a display position of a character or the like to be displayed on the display (5). The image output control means (7) converts a video signal input from the outside during recording into a magnetic head (92) of a rotary cylinder (90).
To the on-screen IC (8), and outputs a reproduction output from the magnetic head (92) of the rotary cylinder (90) to the on-screen IC (8) during reproduction.

There are various possible block configurations for the on-screen IC (8). The applicant has previously proposed the configuration shown in FIG. 4 (Japanese Utility Model Application Laid-Open No. 1-139680).
No.). A position control circuit (81) in the on-screen IC (8) for controlling the position of a character or the like to be displayed based on the horizontal and vertical synchronization signals included in the video signal from the image output control means (7); A video RAM (82) in which contents such as characters to be displayed are stored, and a character generator to which outputs from the video RAM (82) and the position control circuit (81) are input
(83) and an output circuit (84) connected to the output terminal of the generator (83). On-screen display switching button
The signal (80a) from (80) is transmitted to the position control circuit (81) and the video R
AM (82).

A control signal Sc transmitted from the control microcomputer (20) to move the display position is input to the position control circuit (81). In response to the control signal Sc, the position control circuit (8
1) controls the character generator (83) so as to move a character or the like to a position set by the control microcomputer (20). On the other hand, the contents of characters and the like stored in the video RAM (82) are supplied to a character generator (83), in which character data corresponding to the contents to be displayed on the display (5) are stored. Selected. The selected character data and movement information such as characters are transmitted to the display (5) via the output circuit (84).

As shown in FIG. 3, a control microcomputer (20) includes a switching button (40) and a judging means (2) to which signals from the jog dial (4) are inputted, and a rotation time of the jog dial (4). (3) and a switch for switching the input signal from the jog dial (4) to the speed control means (70) or the image output control means (7).
(21) is provided. The switch (21) is a determining means
It is switched by (2). The discriminating means (2) and the timer counting means (3) are connected by a bus cable (30) (30) so as to be capable of two-way communication, and are used for discriminating when moving characters or the like displayed on the display (5). The control signal Sc output from the means (2) is transmitted to the on-screen IC (8). Timer count means (3) is display (5)
It is controlled by the determination means (2) so as to operate only when the upper character or the like is moved. Timer counting means
(3) issues a count control signal Sd to the discriminating means (2) based on the rotation information of the jog dial (4) so as to move the display position at regular intervals.

The operation of the control microcomputer (20) is shown in the flowchart of FIG. Jog dial (4) with magnetic tape (6)
When changing the traveling speed, the switch button (40) is turned on. The discrimination means (2) takes in the signal from the dial (4) (S1), and the jog dial (4) is used to change the running speed of the magnetic tape (6) according to the signal from the switch button (40). Is detected (S2), the switch (21) is switched to the speed control means (70) and the timer count means (3) is not operated (S10). When the jog dial (4) is rotated in this state, the speed control means (7) operates (S11), and the running speed of the magnetic tape (6) is changed. At this time, the control signal Sc is not output from the determination means (2). In the present embodiment, by rotating the jog dial (4), the running speed of the magnetic tape (6) can be switched in five steps in both the reproduction direction and the reverse reproduction direction.

When the jog dial (4) is used to move the display position of a character or the like on the display (5) while the on-screen display switching button (80) is on, the switching button (40) is turned off.
To The discriminating means (2) detects that the jog dial (4) is used for moving the display position of a character or the like displayed on the display (5) (S2), and switches the switch (21) to the image output control means (7). Switch to the side. The discriminating means (2) is a timer counting means (3) during the rotation time of the jog dial (4).
Activate Here, if the rotation time of the jog dial (4) is 400 ms or less, the count is incremented and the display position moving operation ends (S3, S9). Therefore, the display
(5) The upper display position does not change. If the timer counting means (3) counts 400 ms during rotation of the jog dial (4), the display on the display (5) is shifted by one pitch, so that the counter control signal Sd is sent to the discriminating means (2). Emit.

Next, the discriminating means (2) includes a jog dial.
The rotation direction of (4) is determined to be either clockwise or counterclockwise (S4), and based on the count control signal Sd from the timer counting means (3), the same direction as the rotation direction of the jog dial (4). In order to shift the display position of characters and the like on the display (5) by one pitch,
The control signal Sc is issued in (8) (S5, S7). After the movement of the display position, the 400 ms timer is reset (S6, S8), and the on-screen IC (8) is controlled so that characters and the like are kept displayed at the movement position until 400 ms elapses after the movement. By performing this control, the display position can be shifted by one pitch every 400 ms.

In the recording / reproducing apparatus according to the present embodiment, the information displayed on the display (5) can be moved by the on-screen function by rotating the jog dial (4). It is not necessary to provide an operation button for use. Further, since the display position of characters and the like can be moved in accordance with the rotation direction of the jog dial (4), the inconvenience that the display position can be changed in only one direction as in the related art can be solved. Further, when moving the display of characters and the like, a certain timer time is provided by the timer counting means (3) before the movement. Therefore, even if the jog dial
Even if (4) is rotated at a high speed, the time interval at which characters and the like move on the display (5) is constant, and the characters and the like are easy to see.

The description of the above embodiments is for the purpose of illustrating the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims. In this embodiment, characters and the like are displayed on the display (5).
Is moved, but for example, as shown by a dotted line in FIG. 7A, the periphery of the display (5) may be moved in steps. Further, the jog dial (4) may be attached to an external remote controller instead of the apparatus main body (1). Since the remote control device is well known, detailed description is omitted.

[Brief description of the drawings]

FIG. 1 is a plan view of a recording / reproducing apparatus.

FIG. 2 is a front view of the same.

FIG. 3 is a diagram illustrating a circuit configuration of a recording / reproducing apparatus.

FIG. 4 is a block diagram showing a circuit configuration of the on-screen IC.

FIG. 5 is a flowchart showing the operation of the control microcomputer.

FIG. 6 is a front view of a conventional recording / reproducing apparatus.

FIG. 7 is a diagram showing a state where display information moves on a display.

[Explanation of symbols]

 (2) Judgment means (3) Timer counting means (4) Jog dial (5) Display

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ identification code FI H04N 5/445 H04N 5/445 Z (58) Investigation field (Int.Cl. ⁷ , DB name) G11B 15/10 H04N 5 / 278

Claims (2)

(57) [Claims] 1. An on-screen IC (8) for displaying predetermined information on a display (5), and a jog dial (4) rotatably provided on the apparatus main body (1) for changing a recording or reproducing speed of a recording medium. ) And operation from outside of the device (1)
The jog dial (4) is used to change the speed
Switching means for issuing a signal for switching whether or not
In the playback device, the direction of rotation of the jog dial (4) is determined, and the switching signal
Jog dial (4) is used to change the speed
Information is detected on the display (5).
Information display device corresponding to the rotation direction of the jog dial (4).
Determining means (2) for issuing a control signal Sc so as to move
And the rotation time of the jog dial (4) linked to the determination means (2)
Is calculated, the amount of display information movement is determined, and the
So that the information display position is moved at regular intervals
Timer for issuing count control signal Sd to determination means (2)
A recording / reproducing apparatus comprising counting means (3) . 2. The recording / reproducing apparatus according to claim 1, wherein the jog dial is provided on a remote controller of the recording / reproducing apparatus.