JPH067226B2 - Endoscope device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention has an endoscope apparatus, in particular, a memory, and a function capable of arbitrarily controlling data writing and data reading to the memory (hereinafter referred to as a function). The present invention relates to improvement of image display control of an electronic endoscope having a DSC (digital scan converter).

(Prior Art) Conventionally, an electronic endoscope apparatus in which a solid-state image pickup device is incorporated in the distal end portion of a scope generally has a configuration as shown in FIG.

In the figure, 1 is a scope in which a fixed image sensor 1a is incorporated at the tip, 2 is a processing circuit for converting a signal obtained by the solid-state image sensor 1a into an NTSC system or PRG system video signal, and 3 is an output of the processing circuit 2. Convert it to a digital signal,
DSC 4 which stores in a memory circuit, reads it in a desired form, converts it to an analog signal again, and outputs it
It is a television monitor that displays the output signal from the image. 5
Is a light source, which guides the light generated by the light guide to the tip of the scope to illuminate the inside of the digestive tract. In general, the DSC 3 can write data in any form and read data in any form, so that the image displayed on the TV monitor 4 can be reversed horizontally, moved in position, and vertically reversed. It can be done freely.

On the other hand, scopes come in various forms such as front view, side view, and perspective view, and the thickness varies depending on the target site and purpose of use. These structural differences cause various restrictions, which have a great influence on the arrangement of the fixed image pickup element, and a reflective object such as a mirror or a prism must be inserted in the optical path. As a result, the image forming position on the solid-state image pickup device may be different between the various scopes, or may be a left-right inverted image because it is a mirror image.

Therefore, conventionally, the shift of the image display position on the TV monitor 4 and the left / right reversal caused by the difference in the image forming position of various scopes are corrected in the DSC 3 by a manual operation, and the normal image which is not left / right reversal is always fixed. It was supposed to be displayed.

(Problems to be Solved by the Invention) However, it is complicated and troublesome to operate the DSC 3 by hand as in the past.

An object of the present invention is to solve the above-mentioned problems of the conventional device and automatically operate the display image according to the type of the scope.

[Structure of the Invention] (Means for Solving the Problems) The present invention for achieving the above object includes a means for outputting a first display correction signal provided in an endoscope and a second means.
Means for outputting the display correction signal, DSC for converting the image signal output from the endoscope to display a normal image at a predetermined position on the display means, the first display correction signal and the second display correction signal. And a control means for controlling the DSC on the basis of the display correction signal of (1) to select non-inversion or left / right inversion of the image on the basis of the first display correction signal, and to display the image on the basis of the second display correction signal. The configuration is such that the amount of movement of the display position is obtained.

(Operation) Since the endoscope apparatus of the present invention has the above-mentioned configuration, it operates as follows.

That is, when the scope is connected to the apparatus main body, the first display correction signal and the second display correction signal of the scope are read by the CPU in the control means through the output means. Then, the control means selects non-inversion or left-right inversion of the image based on the first display correction signal, and obtains the movement amount of the display position of the image based on the second display correction signal. Based on these, the control means controls the DSC, and the DSC acts so as to display a normal image at a predetermined position on the display unit. Therefore, according to the present invention, a normal image is automatically displayed at a predetermined position only by connecting the scope to the apparatus main body.

(Example) Hereinafter, the illustrated example will be described.

FIG. 1 is a block diagram showing an example of the device of the present invention. The same parts as those of the conventional device are designated by the same reference numerals, and the description thereof will be omitted.

Reference numeral 1'denotes a scope having the same basic structure as the conventional one, but unlike the conventional scope 1, it has an ID for identifying a display image operation according to the type of the scope. This is because the same type of scope does not always form an image at the same position due to an error in parts or assembly, and the direction of the image formed on the solid-state image pickup element by the objective optical system used in the scope is different. Not constant. For this reason, for example, a connector for connecting the scope 1'to the apparatus main body is provided with a plurality of ID pins, and the ID pins are made to correspond to various scopes to be individualized, so that the connection on the solid-state image pickup element in the scope of that type is made. The image position and the distinction between mirror image / normal image can be identified.

Reference numeral 7 denotes a system controller connected to the scope 1'through the ID signal output line 12 and an interface 6 for reading the ID signal. The system controller 7 reads the ID signal through the interface 6 and uniquely identifies the ID signal. Control signals such as data write start / end address, data read start / end address, combined signals of these, write order, various timing signals, etc.
It is designed to output to SC3.

For example, assume a memory corresponding to the monitor screen. In other words, if the intersection of each row and each column of the display position on the monitor screen is made to correspond to each cell of the memory and the timing of reading each column of the corresponding memory from the left side of the monitor screen is advanced, the display screen will be shifted to the left or delayed. If it shifts to the right. Similarly, in the case of vertical movement, the operation can be performed at the timing of reading the row of the memory corresponding to the upper side or the lower side of the monitor screen. To reverse the left and right of the display image, it is sufficient to read from the corresponding memory column from the right side of the monitor screen. In this sense
The ID signal includes a first display correction signal for selecting non-inversion and horizontal inversion of the image and a second display correction signal for obtaining the display position of the image.

Therefore, if the scope to be used is decided, the image forming position on the solid-state image sensor, whether it is a mirror image or a normal image is decided depending on the ID of the scope to be used, and just by connecting the scope to be used to the device body with a connector, the image forming position by the ID signal And the identification information of the mirror image / normal image is input to the system controller 7, and based on this signal, the system controller 7 always sends a control signal necessary for displaying the image at a fixed position and the normal image to the DSC 3. It will be.

FIG. 2 is a block diagram more specifically showing the relationship between the interface 6, the system controller 7, and the DSC 3. The interface 6 inputs from the signal output line 12 to the scope ID signal I / O port 8 and sends it to the CP.
It is read by U9, and the scope ID signal is converted into a predetermined form and output to the bus line 13. The bus line 13 is controlled by the system controller 7, and the CPU
9 is also one of the I / Os of the system controller 7. Scope ID converted into a predetermined form by the CPU 9
The signal is taken in by the system controller 7, and the system controller 7 recognizes the scope ID, outputs the above-mentioned data to the bus line, and uses pulse signals such as clock signals and enable signals and various command signals as control signals of the DSC 3. The data is output to the internal control unit 11. Then, the DSC 3 receives these signals and displays an image in a desired format on the television monitor 4.

Although the scope ID is shown as an input to the I / O port 8 in FIG. 2, for image display, an image formation position on the solid-state image pickup element is used as an ID signal in order to control the display position and the horizontal inversion. It suffices if there is a signal for distinguishing whether the image is a mirror image or a normal image.

Although one embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the above embodiment and can be appropriately modified within the scope of the gist of the present invention.

[Effects of the Invention] As described in detail above, according to the present invention, when the scope to be used is connected to the main body of the apparatus, the ID signal is automatically read and the desired display is automatically made based on the ID signal. It is not necessary to perform various operations related to display for each type of scope to be used, and complexity is eliminated.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of the device of the present invention, FIG. 2 is a partial block diagram of the same as above, and FIG. 3 is a block diagram of a conventional device. 1 ... Scope, 2 ... Processing circuit, 3 ... Digital scan converter, 4 ... Display part, 7 ... System controller.

Claims (1)

[Claims] 1. An endoscope comprising a solid-state image pickup device for picking up an image of an observation region and outputting it as an image signal, a unit for outputting a first display correction signal, and a unit for outputting a second display correction signal. A scope, a digital scan converter for converting the image signal into a digital signal and storing it in a memory circuit, reading it, converting it into an analog signal and outputting the image signal, the first display correction signal and the second display correction signal A control unit that controls the digital scan converter based on a display correction signal and a display unit that displays an output from the digital scan converter are provided, and the control unit non-inverts an image based on the first display correction signal. The endoscope is characterized in that the horizontal shift is selected and the movement amount of the display position of the image is obtained based on the second display correction signal. Location.