JPH0329568A - Picture input device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Icheon) The present invention relates to an image input device, and particularly to its initial operation control means.

(Prior Art) Conventionally, image input devices are configured such that when performing known white balance adjustment, the white balance adjustment means is operated only when the white balance is adjusted manually or when an operation button or the like is pressed. It had been.

[Problem to be solved by the invention]

As mentioned above, in the conventional example, ? When I turn on the power source and start operating the image input device, the white balance adjustment means remains in an incorrect state, so I have to manually adjust the white balance again or use the operation buttons etc. to adjust the white balance. It is necessary to operate the balance adjustment means, which is troublesome and has poor operability.

This invention was made in order to solve the problems of the conventional example as described above. After the power is turned on, the control means automatically operates the white balance adjustment means, and then the illumination means is turned on within a predetermined time. When the light is turned on, the white balance adjustment means is activated again to improve operability when the power is turned on.

(Means for Solving the Problems) Therefore, in the present invention, a mounting table for a read image, an imaging means for optically converting the image into WX, a support means for the imaging means, and an illumination device for the image. An image input device comprising: lighting means for adjusting white balance; and white balance adjustment means for adjusting white balance, the image input device comprising: lighting means for adjusting white balance; and a control means for controlling the white balance adjustment means to operate again for a certain period of time or until a proper state is reached when the lighting means turns on the white balance adjusting means within a certain period of time. , which aims to achieve the above objective.

[Effect]

In the image input device of the present invention, when the image input device starts operating, the control means operates the white balance adjustment means for a certain period of time or until a proper state is reached;
Thereafter, the illumination means is turned on within a certain period of time, and the white balance adjustment means is controlled to operate again for a certain period of time or until a proper state is reached.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

Drawing 7nf is a perspective view of an image input device that is an embodiment of the present invention, FIG. 2 is a side cross-sectional view in the X-x direction of FIG.
1 is a side sectional view of the camera 2 shown in FIG. 1, FIG. 4 is a top view of the operating section of the remote control device 10 shown in FIG. The output No. 3 waveform diagram of the rotary encoder 113 shown in the figure, and FIG. 7 is a flowchart of the control means E that controls the operation of this embodiment.

First, the outline of the configuration of this embodiment will be explained using FIG. 1 and FIG. 2.

In FIG. 1 of the drawings, Y is an image input device, 1 is a mounting table on which the image 1a to be read is placed, and in order to prevent diffusely reflected light from entering the camera 2 from the mounting table 1, the mounting table l is
is used as a diffuse reflector.

The camera 2 is fixed and supported by the horizontal support section 3, and has a color photoelectric conversion section which is an imaging means A for photoelectrically converting the image 1a.

Reference numeral 4 denotes a vertical support section, which is fixed to the mounting table 1, the horizontal support section 3 is connected to the mounting table 1 via the vertical support section 4, and the horizontal support section 3 and the vertical support section 4 are connected to the imaging means A. It constitutes the support means B of. Reference numeral 5 denotes a lighting device consisting of 1,000 stages C disposed on both sides of the mounting table 1, which is used when the top of the mounting table 1 is dark, and can be turned on/off by a switch 6. 7 is a power switch of this device, 8 (Fig. 2) is an external input terminal for inputting a video signal from the outside,
The external input input to this is outputted from the monitor output terminal 9. 10 (FIG. 1) is a remote control device (hereinafter referred to as a remote control) that electrically operates each operating member of the image input device, and in the example shown, it is connected to the main body by a cord. It may also be a wireless type.

Next, the camera 2 shown in FIG. 1 will be explained using FIG. 3.

FIG. 3 is a side sectional view of the camera 2, in which 1
Reference numeral 1 denotes a COD (charge-coupled device) serving as an imaging device, which is an imaging means A, and inputs an image 1a on an a-position 1 (FIG. 1) through a zoom lens 12 and a focus lens 13. The zoom lens 12 is fixed to a movable barrel 2l, and is driven by a motor 15 via a cam barrel 19.

The focus lens 13 is attached to a focus frame 20, fixed to a moving barrel 22, and driven by a motor l6. 14 is a diaphragm, which is driven to open and close by a motor 17. A fixed cylinder 18 is fixed to the horizontal support part 3, and movable cylinders 21, 22 and a cam cylinder 19 are rotatably attached thereto.

Next, regarding the operation section of the remote control device 10 shown in FIG.
This will be explained using figures.

FIG. 4 shows the top surface of the operating section of the remote control device 10 shown in FIG. In the figure, 23 is a rotary dial for focus/zoom adjustment, and 24 is a control switch for the dial 23, which is selectively set to either the focus/zoom position. The illustration shows a focused state.

Reference numeral 25 is an iris (aperture) button, which opens the iris when pressed on the plus side and closes the iris when pressed on the minus side. Furthermore, by pressing the auto iris button 26, the aperture can be adjusted automatically. Reference numeral 27 is an input switching button, which is used to select the input from the external input terminal 8 (FIG. 2) and the camera 2. , 28 is a negative/positive switching button, and 29 is a white balance 3! constituting the white balance adjustment means D. This is the I adjustment button, and while this button is pressed, the automatic white balance adjustment means is operated, and when the button is released, the state at that point is maintained. Next, we will discuss the configuration centered on the control system of this embodiment in the fifth section.
This will be explained using FIG. 6 and FIG.

FIG. 5 is a block diagram of this embodiment, showing the configuration centered on the control system. In Figure 5 of the drawing, 1
01 is a camera head for capturing an image of the subject Y1. A lens R is attached to the front of the camera head 101 and forms an image of the subject Y on the image sensor CCD in the head, and includes a zoom optical lens 102 with a number of a, and an aperture 1.
03, Zoom adjustment motor 104. It is composed of a focusing motor 105 and an aperture adjustment motor 106. Here, each motor 104, 105,
106 are elements that can convert electrical energy into mechanical energy, such as a DC motor, a step motor, and an M sonic motor, and can be mechanically moved in the opposite direction by commands from the controls 1 and 2. For movement in both directions, the zoom: A adjustment motor 104 sets the focus to "detail"/"wide", the focusing motor 105 sets the focus to "near"/"far", and the aperture I1 adjustment motor 106 sets the aperture. “
"Open"/"Close" operations, and zoom and focus (
(focus) and aperture (exposure amount) can be adjusted (details will be explained later).

Image information of the subject Y1 is transmitted from the camera head 101 to a white balance (W, B) circuit 130, which is a white balance adjustment means D that performs white balance, and a switcher 13.
3. The signal is outputted via an output line 107 as a video signal such as NTSC. At the same time, the camera head 101 outputs a luminance signal from terminal b to detect the average luminance of the subject Y1, which is input to the integrating circuit 109 via the line 108, integrated by the integrating circuit 109, and sent to the A/D converter 111. After A/D conversion, the signal is input to the controller 112, which is the III control device for the entire system and constitutes the control means E.

Note that the camera head 101 is connected to the circuit 1 for h1 from the terminal C.
A synchronizing signal is sent to the terminal 09 to give reset timing for the integral waveform, and a timing pulse is sent to the controller 112 from the terminal d to designate the timing to be taken into the controller 112. 113 is a rotary encoder, and its two outputs A and B are the controller 1
The rotary encoder 1 shown in FIG.
As shown in the output signal waveform diagram No. 13, when the rotary encoder 113 is rotated to the right, the waveform changes as follows, and when the rotary encoder 113 is rotated to the left, the waveform changes as follows. Therefore, the controller 112 receives input from the rotary encoder 113 (A
, B) makes it possible to determine the rotation direction.

114, 115, and 116 are zoom and focus, respectively. This is a member that specifies the aperture operation. For example, when the input from these becomes "high" level, controller 1
12 determines that the operation has been specified. Note that more than one operation cannot be specified at a time. In response to the rotation of the rotary encoder 113, the controller 112 follows the right/left rotation, if zoom operation is specified, tele/wide, if focus operation is specified, near/far, and if aperture operation is specified. Perform open/close operations.

Reference numeral 117 is a member for specifying automatic white balance adjustment, which constitutes the white balance adjustment means D, and includes, for example,
While this input is at the “high” level, auto white balance will operate, and when it goes to the “low” level,
Retain the current state.

118 and 119 are up/down operation members, respectively, and when these become the "high" level, the controller 112 operates. The aperture 103 is opened (up operation)/closed (down operation).

Reference numeral 120 is a negative/positive switching operation member, and the negative/positive state is switched every time the input from now on becomes a "high" level.

121, 122, 123 are input switching operation members, and in response to the inputs, the controller 112 changes the inputs c, d of the switcher 133 through the switcher input lines a, b.
, e.

124 is a turning on/off operation member of a lighting device 125 which is a lighting means C, and its state is inputted to the controller 112. #125 is a lighting device which constitutes a lighting means C and is for illuminating the mounting table 1. be.

126 is an integrating circuit for integrating the BY (blue one brightness) signal from the white balance circuit 130 constituting the white balance adjustment means D, and 127 performs A/D conversion and sends the result to the controller 112. A/D to input
It is a converter.

128 is R-Y from the white balance circuit 130 (
This is an integrating circuit for integrating the red (one brightness) signal, and 12
9 performs A/D conversion and sends the result to the controller 112.
&: Input A/D converter.

131 is a D/A control value of B from the controller 112.
D/A that is converted and input to the white balance circuit 130
A converter 132 performs D/A conversion of the R control value from the controller 112, and converts the R control value from the controller 112 into a white balance circuit 13.
This is a D/A converter that inputs to 0.

As mentioned above, 130 is a white balance circuit that performs white balance adjustment based on the B control value and R control value from the controller 112. Further, under the control of the controller 112, the inputs c, d. This is a switcher for selecting one of e and outputting it to the video output 107.

Next, the operation control of this embodiment will be explained with reference to FIG. 7, focusing on the control means E.

The control means E in the flow described below operates the white balance: J4 adjustment means D for a certain period of time or until it reaches an appropriate state when the image input device Y starts operating.
Thereafter, when the illumination means C lights up within a certain period of time, the white balance adjusting means D is controlled to operate again for a certain period of time or until it reaches a proper state.

The process will be explained below according to the flow shown in FIG. 7 of the drawing.

In the flowchart of FIG. 7, when the power is turned on and the controller starts operating, timers for white balance and illumination device are started in step S1. In step S2, white balance adjustment is performed, and the process proceeds to step S3. In step S3, it is determined whether it is the white balance end time, and if it is the end time, the process advances to step S5. If it is not the end time, step S4
The process proceeds to step S5, and it is determined whether the white balance is in the normal state. If the white balance is in the normal state, the process proceeds to step S5. If not, the process returns to step S2 and steps S2 to S4 are repeated.

In step S5, the timer for the lighting device is constant +
1. It is determined whether 'F time has elapsed, and if it has elapsed, the process advances to step Sll. If it has not passed, step S6
It is determined whether the lighting device is lit, and if it is not lit, the process returns to step S5, and steps S5 to S are continued until a certain period of time has elapsed or the lighting device is lit.
Repeat step 6.

In step S7, a white balance timer is started. In step S8, white balance adjustment is executed again, and in step S9, it is determined whether it is the white balance end time, and if it is the end time, the process advances to step Sll.

If it is not the end time, the process proceeds to step SIO, where it is determined whether the white balance has become inappropriate, and if the white balance is in an appropriate state, the process proceeds to step S11. If the state is not proper, the process returns to step S8 and steps S8 to SIO are repeated. In step Sll, processing according to the operation of the operating member is repeated until the Ti source is turned off.

〔Effect of the invention〕

According to this invention, after the power is turned on, the white balance adjustment means is automatically operated by the Ill control means, and when the illumination means is turned on within a certain period of time, the white balance adjustment means is operated again, and the power is turned on. This has the effect of improving the operability of the time.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an image input device that is an embodiment of the present invention, FIG. 2 is a side sectional view taken along the line XX in FIG. 1, and FIG. 3 is a side sectional view of the camera 2 shown in FIG. 1. 4 is a top view of the operating section of the remote control device 10 of FIG. 1, FIG. 5 is a configuration diagram showing the configuration of this embodiment, and FIG. 6 is a rotary encoder 11 of FIG. 5.
3 and 7 are flowcharts of the control means E for controlling the operation of this embodiment. A ------- Imaging means B ---- Supporting means C ------- Illumination means D ---- White balance adjustment means E - -
III Control means Y ------- Image input device! . . . 1 mounting table 1 a 1 image 2 . . . camera 10 .

Claims (1)

[Scope of Claims] A mounting table for an image to be read, an imaging means for photoelectrically converting the image, a support means for the imaging means, an illumination means for illuminating the image, and a white balance adjustment means for adjusting the white balance. An image input device comprising: When the image input device starts operating, the white balance adjustment means is operated for a certain period of time or until a proper state is reached, and then, within a certain period of time, the white balance adjustment means is turned on by the illumination means. An image input device comprising: a control means for controlling the white balance adjustment means to operate again for a certain period of time or until a proper state is reached when the white balance adjustment means is adjusted.