JPH11197103A - Electronic endoscope device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To always output an optimal video signal in an electronic endoscope device even if the combination of the connection between the electronic endoscope and the processor is changed. A unique number is assigned to each of the electronic endoscope main bodies, a number generating circuit for generating the assigned number is provided, and a number receiving circuit is provided in the processor, and the number and the black balance adjustment value are provided. And the white balance adjustment value are stored in the storage circuit in association with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an improvement in an electronic endoscope device.

[0002]

2. Description of the Related Art FIG. 2 is a diagram showing an example of a block configuration of an electronic endoscope using a conventional technique.

Conventionally, as shown in FIG. 2, an electronic endoscope apparatus generally includes an electronic endoscope main body 1 inserted into a body cavity, a processor 2, and a monitor television (not shown).

The electronic endoscope main body 1 has an objective lens 4 disposed at the distal end thereof, and a solid-state imaging device 5 disposed at an image forming position.

[0005] The light guide 3 is for introducing illumination light into the body cavity.

The storage circuit 5 stores the adjustment values of the black balance and the white balance.

The illumination lamp 11 is composed of a xenon lamp or the like, and is connected to a lighting device 12. The condenser lens 9 is arranged so as to collect the light emitted from the illumination lamp 11 on the end face of the light guide 3. Light emitted from the illumination lamp 11 is applied to a subject (not shown) via the iris 10, the condenser lens 9, and the light guide 3. The reflected light of the subject is
Is imaged on the solid-state imaging device 5 and photoelectrically converted by the solid-state imaging device 5. The signal obtained by the photoelectric conversion is transmitted to the processor 2
The black balance adjustment circuit 14 adjusts the black balance, and the white balance adjustment circuit 15 adjusts the white balance. The process circuit 16 performs video signal processing such as gamma correction, and the processed signal is input to the display control circuit 17. The display control circuit 17 converts the input signal into a television signal and converts the signal into a video signal 18.
And outputs it to the subsequent stage (not shown).

Here, when the black balance adjustment signal 7 is input, the iris control circuit 13 controls the control iris 10 based on the signal, whereby the iris 10 is controlled.
Is closed. Then, the black balance adjustment circuit 14
, The black balance is adjusted, and an adjustment value based on the result of the adjustment is stored in the storage circuit 6.

When the white balance adjustment signal 8 is input, the white balance is adjusted by the white balance adjustment circuit 15, and an adjustment value based on the result of the adjustment is stored in the storage circuit 6.

After the adjustment values are stored in the storage circuit 6, a constant white balance and black balance are adjusted based on the adjustment values.

[0011]

In the above-mentioned prior art,
Since the black balance and white balance of the electronic endoscope have been adjusted for one processor, if a processor other than the adjusted processor is replaced and reconnected, the black balance and white balance will be adjusted again. Adjustments need to be made.

SUMMARY OF THE INVENTION It is an object of the present invention to adjust the black balance and the white balance once so that it is not necessary to perform the adjustment again by replacing the processor.

[0013]

In order to achieve the above object, the present invention provides a circuit for assigning a unique number to an electronic endoscope and generating a signal representing the number.

The processor is provided with a number signal receiving circuit. The adjustment values for white balance and black balance are
It is stored in the storage circuit on the processor side together with the number.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, first, a unique number is generated and output by a number generating circuit 19 of the electronic endoscope main body 1. The generated number is input to the storage circuit 21 via the number receiving circuit 20 of the processor 2.

When a black balance adjustment command signal 7 is input from the outside (not shown) to the electronic endoscope apparatus, the iris control circuit 13 is controlled by the signal to close the iris 10. Thereafter, the black balance adjustment circuit 14 performs adjustment so that the black balance is appropriate, and the adjustment value obtained by the adjustment is stored in the storage circuit 21 together with the above-mentioned number.

Further, when a white balance adjustment command signal 8 is inputted from the outside (not shown), the white balance adjustment circuit 15 adjusts the white balance adjustment circuit 15 based on the signal so that the white balance becomes appropriate. The adjusted value is stored in the storage circuit 21 together with the number.

Here, at normal time, the number generated from the number generating circuit 19 of the electronic endoscope main body 1 is inputted to the storage circuit 21 of the processor 2 so that the black stored from the storage circuit 21 in accordance with the number is inputted. The balance adjustment value is output and input to the black balance adjustment circuit 14.

The white balance adjustment value stored in accordance with the above number is output from the storage circuit 21 and is input to the white balance adjustment circuit 15.

In this manner, when various electronic endoscope bodies 1 are connected, appropriate black balance and white balance adjustment can be performed for each connected electronic endoscope. An optimal video signal can always be output from the video output 18.

[0022]

According to the electronic endoscope apparatus of the present invention, the adjustment values of the appropriate black balance and white balance are stored for each of the connected electronic endoscopes. Even if the connection combination is changed, since the adjustment is performed using the adjustment value for performing the appropriate adjustment stored in advance according to the number output from the electronic endoscope after the change in the combination, the optimum black balance is obtained. And white balance adjustment. Therefore, it is possible to always output an optimal video signal.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of the present invention.

FIG. 2 is a block diagram showing a conventional technique.

[Explanation of symbols]

14: black balance adjustment circuit, 15: white balance adjustment circuit, 19: number generation circuit, 20: number reception circuit, 20: storage circuit.

Claims (1)

[Claims] 1. An electronic endoscope apparatus comprising: an imaging unit configured to convert light from a subject into an electric signal; and a video signal processing unit configured to process a video signal output from the imaging unit. Means comprising number generating means, means for receiving the number signal output from the number generating means to the electronic endoscope device, means for adjusting the black balance,
An electronic endoscope apparatus comprising: a means for adjusting a white balance; and a storage means for storing an adjustment value of a black balance and a white balance at an address corresponding to a received number signal.