JP2598778B2 - TV display device for endoscope - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an endoscope television display device capable of displaying a transendoscopic image together with character data.

[Related Art] When displaying a transendoscopic image obtained by a conventional electronic endoscope (electronic scope) on a monitor, the transendoscopic image is displayed on one side of a monitor screen, that is, on the right or right side. It is displayed on the left side. Then, character data relating to the transendoscopic image is displayed in a vacant portion on the other side of the screen. In this way, the character data can be displayed as relatively long characters, so that the character data is recorded together with the transendoscopic image by a VTR or the like, and thereafter, when reproduced, the information on the transendoscopic image can be known in detail. It is quite convenient.

[Problems to be Solved by the Invention] When character data and a transendoscopic image are displayed together as described above, it is convenient for diagnosis, but when character data is not recorded, one side of a monitor screen is displayed. Since only the image is displayed, it is hard to see visually, and when the display is biased to one side, the displayed image remains distorted.

Therefore, the present invention displays a transendoscopic image by decentering the center of the transendoscopic image with respect to the center of the screen when character data is present or abundant, and displays the transendoscopic image when there is no or little character data. It is an object of the present invention to provide an endoscope television display device capable of displaying a transendoscopic image with the center of the endoscopic image positioned at the center of the screen.

[Means and Actions to be Solved by the Invention] According to the present invention, a television display device for an endoscope has a character memory for storing character data relating to a transendoscopic image, and the presence or absence of character data stored in the character memory. Or a detecting means for detecting the degree, an A / D converter for digitally converting a transendoscopic image signal based on the output of the photographing means, and storing the transendoscopic image signal digitally converted by the A / D converter And displaying the transendoscopic image by the transendoscopic image signal stored in the digital memory in response to the detection result of presence or absence of character data by the detection means, and A first timing signal that causes the center of the endoscopic image to be eccentric with respect to the center of the screen, and the center of the transendoscopic image in response to a detection result of no or few character data by the detection unit. Timing signal output means for switching and outputting a second timing signal for displaying the transendoscopic image at the center of the screen,
Means for creating the video signal into which the transendoscopic image signal read from the digital memory according to the timing signal output by the timing signal output means is inserted; and outputting the signal output from the creation means. It is constituted by means for outputting to a monitor.

According to this configuration, the center of the transendoscopic image is decentered with respect to the center of the monitor screen or is positioned at the center of the monitor screen in accordance with the first and second timing signals. A mirror image can be displayed.

Therefore, when character data related to the transendoscopic image is displayed, or when the character data is not displayed, the transendoscopic image is decentered from the center of the monitor screen, or is positioned at the center of the monitor screen. Since it is possible to position and display, a necessary screen can be observed in a more easily viewable state.

[Embodiment] According to the embodiment shown in FIG. 1, a keyboard 11 for inputting character data such as patient data is connected to a character memory 12. The character memory 12 records character data input from the keyboard 11. The character memory 12 is connected to a reading circuit (A) 13 for reading character data from the character memory 12 and detecting the presence or absence of character data.
The output terminal of the reading circuit 13 is connected to the adding circuit 16 via the D / A converter 14. The character detection output terminal of the read circuit 13 is connected to the read circuit (B) 15.

An output section of an electronic scope 17 having a built-in solid-state imaging device (CCD) is connected to a video processing circuit 18. Video processing circuit
The output of 18 is video memory 20 via A / D converter 19
Is combined with This video memory 20 is a read circuit (B)
A video signal is read in response to 15 read signals. The read output of the video memory 20 is coupled to the adder 16 via a D / A converter 21. The output of the adding circuit 16 is connected to the monitor 22.

In the above endoscope television display device, when the electronic scope 17 is inserted into the body cavity and is operated, the electronic scope 17
From 17, a video signal corresponding to the transendoscopic image is output. This video signal is subjected to signal processing by a video processing circuit 18, then converted into a digital video signal by an A / D converter 19, and stored in a video memory 20. This video memory 20
Is read out by the readout signal from the readout circuit (B) 15, and the readout circuit (B) 15 determines the readout timing according to the readout signal from the readout circuit (A) 13. That is, when the reading circuit (A) 13 detects the presence of character data in the character memory 12, the reading circuit (A) 13 outputs a character presence signal to the reading circuit (B) 15. The readout circuit (B) 15 reads out a video signal from the video memory 20 at a timing such that a transendoscopic image is displayed on the right side as shown in FIG. The determination of the read timing will be described in detail later, but in principle, the read address designation of the video memory 20 is determined according to the scanning position or the pixel position of the horizontal scanning line.

The video signal read from the video memory 20 is converted into an analog video signal by the D / A converter 21 and input to the adding circuit 16. Since the character data read from the character memory 12 by the read circuit (A) 13 is supplied to the addition circuit 16 via the D / A converter 14, the video signal is added to the character data. When the added video signal output from the adding circuit 16 is input to the monitor 22, the transendoscopy image is displayed on the monitor 22 to the right and the characters to the left as shown in FIG. In this case, since the character display range is wide, considerably detailed patient data can be displayed in characters.

If no character data is stored in the character memory 12, the readout circuit (A) 13 reads the no-character signal and the readout circuit (B) 15
To supply. In this case, the reading circuit (B) 15 starts reading the video memory 20 at the timing when the transendoscopic image is displayed at the center of the monitor screen as shown in FIG. The video signal read from the video memory 20 is supplied to the D / A converter 2
The signal is input to the addition circuit 16 via 1, but since no character data is input to the addition circuit 16, only the video signal is input to the monitor 22. Therefore, only the transendoscopic image is displayed at the center of the monitor screen. The transendoscopic image displayed at the center of the screen can be observed without distortion and with good balance.

When there is a character and the character data is a long sentence, the transendoscopic image is shifted upward as shown in FIG. 4, and a space is formed below the screen. An image shown in FIG. 4 is obtained by inputting a character so that a long sentence character enters this space. The character space may be provided not only below but also above.

In the embodiment of FIG. 5, a switch 23a is connected between the read circuit (A) 13 and the read circuit (B) 15, and a switch 23b is connected between the D / A converter 14 and the adder circuit 16. . Switches 23a and 23b are interlocked with each other. According to this embodiment, it is assumed that the switches 23a and 23b are turned on, and the character data and the transendoscopic image are displayed separately on the left and right as shown in FIG. In this state, when the switches 23a and 23b are turned off, the read circuit (A) 13
Read-out circuit (B)
15 judges that there is no character, and starts reading the video memory 20 at a timing such that only the transendoscopic image is displayed at the center of the screen. That is, in this embodiment, when the switches 23a and 23b are off, only the transendoscopic image is displayed at the center of the screen regardless of the presence or absence of character data.

In the above embodiment, the reading control is performed so as to change the display position of the transendoscopic image depending on the presence or absence of the character data. However, when the number of characters is small, even if the transendoscopic image is displayed at the center, As shown in FIG. 6, character data can be displayed in spaces on both sides of the transendoscopic image. In this case, the readout circuit (A) 13 determines the number of characters, and if the number of characters is small, inputs a no-character signal to the readout circuit (B) 15. The reading circuit (B) 15 starts reading the video memory 20 at such a timing that the transendoscopic image comes to the center of the screen, and character data is input to the adding circuit 16. Accordingly, as shown in FIG. 6, the transendoscopic image is located at the center, and character data is displayed on both sides of the transendoscopic image.

FIG. 7 shows a circuit configuration of the readout circuit (B) 15. According to this circuit, the vertical synchronizing signal
Is input to the clear terminal CLR of the
1 and a clear terminal CLR of the counter 32. The screen dot clock is input to the clock terminal CLK of the counter 32. Output terminals of the counters 31 and 32 are connected to one input terminals of the comparators 33 and 36, respectively. A preset data circuit 35 is connected to the other input terminal of the comparator 33. The other input terminal of the comparator 36 is selectively connected to preset data circuits 38 and 39 via a switch 37.
The preset data circuit 38 generates preset data for displaying a transendoscopic image on the right side as shown in FIG. The preset data circuit 39 generates preset data for displaying a transendoscopic image at the center as shown in FIG. The output terminals of the comparators 33 and 36 are connected to the input terminal of the AND gate 34.

The operation of the circuit of FIG. 7 will be described with reference to the timing chart of FIG. When a character presence signal is input to the switch 37, the switch 37 is connected to the preset data circuit 38 in response to this signal. In this state, the counter
When a vertical synchronizing signal is input to the counter 31, the counter 31 counts the horizontal synchronizing signal after being cleared. The count value of the counter 31 is input to the comparator 33 and compared with the horizontal scanning line number information preset in the preset data circuit 35. The horizontal scanning line number information defines the upper edge position of the transendoscopic image. When the counter 31 matches the preset value of the preset data circuit 35, the comparator 33 outputs an H level signal to the AND gate 34.

On the other hand, the counter 32 counts the screen dot clock while being cleared by each input of the horizontal synchronization signal.
The count value of the counter 32 is input to the comparator 36.
The screen dot clock is generated according to the number of pixels in the horizontal direction. The comparator 36 compares the count value of the count 32 with the preset data of the preset data circuit 38.
When the count value of the count 32 matches the preset data of the preset data circuit 38, the comparator 36 inputs an H level signal to the AND gate 34. Since both input terminals of the AND gate 34 become H level, the AND gate 34
A read start signal is output to 0. One line of the video signal is read from the video memory 20 in response to the read start signal. When one line of the video signal is read, the video signal of the line corresponding to the next horizontal synchronization signal is read. In this way, when the video signals of the video memory 20 are sequentially read out and supplied to the monitor 22 via the A / D converter 21 and the adder circuit 16, the monitor 22 displays the transendoscopic image as shown in FIG. Is displayed on the right.

When the switch 37 switches the readout circuit (A) to the preset data circuit 39 in response to the no-character signal from 13, the output value of the counter 32 becomes the preset data of the preset data circuit 39, that is, the center position display shown in FIG. Is compared with the preset data. When the count value of the count 32 matches the preset data of the preset data circuit 39, the comparator 36 inputs an H level signal to the AND gate 34. Since both input terminals of the AND gate 34 become H level, the AND gate 34 outputs a read start signal to the video memory 20. The read start signal causes the video memory
Twenty video signals are read out and a transendoscopic image is displayed at the center of the monitor screen as shown in FIG.

As the electronic scope 17 used in the above embodiment, an electronic scope using a color sequential system using a leading-edge image sensor, a color mosaic filter system, or a plane sequential (CBS) camera can be used. Further, the present invention can be applied to a general external endoscope camera or an ultrasonic endoscope.

In the embodiment shown in FIG. 1, a video signal and a character data signal are added by an adding circuit, and both are displayed on a monitor. However, a frame memory is provided, and both the video signal and the character data signal are written in the frame memory. In rare cases, they may be combined.

When displaying only the transendoscopic image on the monitor, the transendoscopic image may be enlarged and displayed. When both the video signal and the character data signal are displayed, the transendoscopic image may be reduced and displayed. In this case, the amount of reduction can be varied according to the amount of characters.

[Effects of the Invention] According to the present invention, the display position of a transendoscopic image can be changed depending on the presence or absence of character data, or when character data relating to a transendoscopic image is displayed or when character data is not displayed. Depending on the situation, the endoscopic image can be displayed off-center from the center of the monitor screen or displayed at the center of the monitor screen, so that the necessary screen can be observed in a more easily viewable state.

[Brief description of the drawings]

1 is a circuit diagram of a television display device for an endoscope according to one embodiment of the present invention, FIGS. 2 to 4 are diagrams of a display screen of a monitor, and FIG. 5 is a diagram according to another embodiment. FIG. 6 is a circuit diagram of a television display device for an endoscope, FIG. 6 is a diagram of a display screen of a monitor, FIG. 7 is a circuit diagram of a readout circuit, and FIG. 8 is a time chart diagram for explaining the operation of FIG. . 11 ... keyboard, 12 ... character memory, 13 ... readout circuit (A), 15 ... readout circuit (B), 16 ... addition circuit,
17 ... electronic scope, 18 ... video processing circuit, 20 ... video memory, 22 ... monitor.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-162586 (JP, A) JP-A-59-97642 (JP, A) JP-A-59-70384 (JP, A) JP-A-60-1985 198586 (JP, A) JP-A-54-156422 (JP, A) JP-A-51-9532 (JP, A)

Claims (3)

(57) [Claims] 1. An endoscope television display device for displaying an image based on a video signal on a monitor screen, a character memory storing character data relating to a transendoscopic image, and the presence or absence of character data stored in the character memory. Or a detecting means for detecting the degree, an A / D converter for digitally converting a transendoscopic image signal based on an output of the photographing means, and storing the transendoscopic image signal digitally converted by the A / D converter Digital memory, and displaying the transendoscopic image by the transendoscopic image signal stored in the digital memory in response to the detection result of presence or absence of character data by the detection means, and A first timing signal for causing the center of the endoscope image to be eccentric with respect to the center of the screen; A second timing signal for displaying the transendoscopic image by positioning the second timing signal at the center of the screen and outputting a timing signal; and a timing signal output from the digital memory by the timing signal output means. Means for creating the video signal into which the transendoscopic image signal read in accordance therewith is inserted; and means for outputting a signal output from the creating means to the monitor. TV display device for endoscope. 2. The endoscope according to claim 1, wherein the center of said transendoscopic image is located at the center of said screen, and said transendoscopic image is enlarged and displayed on said screen. TV display for mirror. 3. The apparatus according to claim 1, wherein said timing signal output means is means for outputting said first timing signal or said second timing signal by switching a switch. Telescope display device for endoscope.