JPS6026920A - Endoscope system - Google Patents

Abstract

PURPOSE:To obtain an endoscope system which obviates a change in setting of a timepiece owing to runaway of a CPU by the effect of noise, etc. by enabling the time setting of the timepiece means of a light source unit only when a data setter is connected to said system. CONSTITUTION:The one input terminal of an OR gate 16 is at an H level and therefore the one input terminal of an AND gate 17 is at an H level while a data setter 4 is not connected to a light source unit 3. If a write signal is outputted from a writing terminal WRP90 owing to runaway of a CPU8 by noise, for example, while the CPU8 controls the system of an endoscope 1, said write signal is blocked by the GATE17 and is not inputted to a timepiece IC13. Therefore the timepiece IC13 continues to operate at the exact time without being changed in the time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope system, and particularly to an endoscope system equipped with a clock function.

Conventionally, a clock was built into the endoscope light source unit.
An endoscope system has been proposed in which time data from this clock is transmitted to an endoscope camera and the data is imprinted. If such an endoscope system only needs to transmit coarse data such as year, month, date, and hour, it is necessary to use a light source unit due to the precision of current crystal hour hands or ceramic oscillators.

Once the time is set, the internal clock does not require time adjustment for several years. Therefore, it has been considered that the light source unit does not have a built-in time setting function and that a data setting device is connected to the light source unit to set the time as necessary.

However, normally, the light source unit is used without connecting the data setting device '5c. In such a case, the CPU provided in the light source unit may run out of control due to noise or the like, causing the clock to be set to an incorrect time. On the other hand, the time cannot be reset, and incorrect time data will be imprinted until the data setting device is connected to the light source unit and the time is reset.

Therefore, the purpose of this invention is to reduce the CPU noise due to the influence of noise etc.
To provide an endoscope system in which the clock setting is not changed due to runaway operation.

An embodiment of this invention will be described below with reference to the drawings.

According to Figure 1, an endoscope camera 2 is attached to the eyepiece of an endoscope 1.
is attached, and the connector of the universal cord of the endoscope is connected to the light source unit 3. A data setting m1t4 is connected to this light source unit 3 for 1d via a connector 4a. The endoscopic camera 2 is provided with an imprint data display body 5. The data setting device 4 is provided with a setting data display body 6 and a data input key part 1.

FIG. 2 shows a block circuit of the endoscope system of FIG. According to this circuit, the light source unit 3 is provided with a CPU &, a ROM 9, and a RAM 10;
PU& is connected to ROM 9, RAM 10, serial communication ICs 11 and 12, clock LC 13, and imprint data storage RAM 74 via a data bus. The serial communication ICs 11 and 12 are connected to connection terminals connected to the connection terminal of the endoscope connector 1& and the connection terminal of the data setting device 4a, respectively. Short circuit terminal 1 of data setting device 4
One of the connection terminals connected to 5 is connected to one input terminal of the OR bracket 15. The output terminal of the OR dart 16 is connected to one input terminal of the AI"JD dart 17.
One input terminal of the R dart 16 is connected to the power supply V via a resistor 18.
. The other input terminal is connected to the power supply vcCK through a resistor 19 and grounded through a switch 20f.

ROM 9, FOA
M10.

It is connected to the serial communication ICs 11 and 12, the ID IC 13, and the imprint data storage RAM J4.

The read terminal point is RAMPO, IC11 for serial communication
, 12 and the other input terminal of the AND gate 17. The output terminal of the AND dart 17 is connected to the clock IC and the 4-write terminal of the imprint data storage RAM 14.

The serial communication ICII of the light source unit 3 is connected to the serial communication IC 21 of the endoscope camera 2 via the connection terminal of the endoscope connector 1a.

The serial communication IC 21 controls the endoscope camera 5.
Connected to PU 22. This CPU 22 is connected to the imprint data display body 5.

The serial communication IC 12 of the light source unit 3 is connected to the serial communication IC 23 via the connection terminal of the data setting device 4.
It is a tradition. The serial communication IC 23 is connected to a CPU 24 that controls the data setting device 4. CPU
24 is connected to the data manual part 7.

In the circuit shown in FIG. 2, if the data setting device 4 is not connected to the light source unit 3, one input terminal of @0l-Lr-to 16 is at H level, and therefore one input terminal of hko gate 17 is at H level. It is at H level. In this state, when the CPU 8 is controlling the endoscope system according to the program stored in the ROM 9, for example, the υcpu s goes out of control due to noise, and as shown in the time chart in Figure A3, the υcpu s goes out of control. When the writing signal is outputted, this writing signal is blocked by the AND gate 17 and the writing signal is blocked by the clock ICl3 and the imprint data storage RA.
It is not input to M74. Therefore, the clock ICl3 continues to operate at the correct time without being changed by the write signal caused by the runaway of the time i CPU 8. Further, data will not be erroneously rewritten in the imprint data storage RAM 14. Time data and imprint data storage R of the clock ICI J that is operating normally in this way
AM 14 data is data bus and I for serial communication.
Serial communication IC1 for endoscope camera 2 via C11
1, the CPU 22 of the endoscope camera 2 displays the transferred data on the imprint data display 5.

At this time, when a release switch (not shown) of the camera 2 is operated, the CPU 22 responds to this by operating a data imprinting unit (not shown) of the camera 2 to imprint data onto the film.

Next, the data setting device 4 connects the light source unit 3 to the connector 4.
When connected via a, one input terminal of the OR dart 16 of the light source unit 3 is guided to the ground electrode by the shorting terminal 15 of the data setting 6-device 4, and becomes L level. Therefore, the input terminal of the AND dart Noah is at L level, and the first loading signal can pass through the AND dart 17. In this state, the data input key part 7 of the data setting device 4 is operated and, for example, time data is transferred to the CPU 24.
When input to the CPU 24, the serial communication IC 23
Transfer time data to. The serial communication IC 23 connects to the serial communication IC 1 of the light source unit 3 via the connection terminal.
2, time data is serially transmitted as shown in the time chart of FIG.

The CPU 8 of the light source unit 3 outputs a filling command signal via the write terminal WR in order to update the time of the clock ICI J based on the transmitted time data. When this write command signal is supplied to the clock IC13 via the ANDf-to 17'f:, the time of the clock IC13 is updated by the time data via the data bus. Further, data necessary for imprinting is stored in the imprint data storage RAMI j4.

As described above, when the data setting device 4 is not connected to the light source unit 3, even if a write signal is output from the CPU 8, this write signal is not guided to the clock ICI J, and the clock IC 13 is not involuntarily converted into data. .

In the embodiment shown in FIG. 3, connection of the data setting device is detected by detecting a shorted terminal provided on the data setting device. On the other hand, the embodiment of the fourth factor shows an endoscope system in which the data setting device is not provided with a special detection member.

According to this embodiment, the input terminal of a retriggerable mono multivibrator 250 is connected to a data line for transmitting data from the data setting device 4. A resistor 26 and a capacitor 27 are connected to the retriggerable mono-multivibrator 25 for determining a time constant. The output terminal of the mono multivibrator 25 is connected to one input terminal of the OR dirt 16. The other circuit configuration is the same as that in FIG.

In the embodiment shown in FIG. 4, when the data setting device 4 is not connected to the light source unit 3 or when data is not being transmitted from the data setting device 4, the clock IC 13 and the imprint data storage RAM 14 are in a writable state. It is configured so that it does not occur. That is, as shown in the time chart of FIG. 5, when serial data is not being transmitted from the data setting device 4, the IJ gable mono multivibrator 25uH level signal is fully output, and therefore, ANDr-) 17 is r-) is in the OF'F state and prevents the passage of the intrusion signal. When serial data is transmitted from the data setting device 4, the retriggerable mono multivibrator 25 outputs an L-level signal in response to the start of the serial data. This signal passes through the OkL gate 16 to AlqO)la
- When supplied to port 11, this Af signal 017 is turned ON, allowing all write signals to pass through.

Therefore, when the time data is transmitted to the clock ICJ 3 at this time, the time of the clock ICI J is updated according to this time data. The retrievable monomultiper 9-ibrator 25 is reset at the fall of the final bit of data and the rise of the one-shot time, and outputs an H level signal. As a result, the clock ICI J cannot change the time, and even if the CPU & of the light source unit 3 goes out of control, the clock IC
13, the time will not be changed by mistake.

As explained above, according to the present invention, a means for detecting whether or not a data setting device is connected is provided, and the clock means of the light source unit can set the time only when this detecting means detects the connection of the data setting device. CPU
This prevents the time of the clock means from being changed inadvertently due to runaway, etc., and erroneous data is prevented from being imprinted.

When adjusting the clock IC at the factory or during maintenance, the operating state of the clock IC can be checked and the time can be set by closing the switch 20 provided for manual setting.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an endoscope system according to an embodiment of the present invention, Fig. 2 is a professional circuit diagram of the endoscope system, and Fig. 3 is a perspective view of an endoscope system according to an embodiment of the present invention. FIG. 4 is a block circuit diagram of an endoscope system according to another embodiment, and FIG. 5 is a time chart explaining the operation of the endoscope system of FIG. 4. It is a diagram. DESCRIPTION OF SYMBOLS 1... Endoscope, 2... Endoscope camera, 3... Light source unit, 4... Data setting device, 5... Imprint data display body, 6... Setting data display body , 7... Part of setting data input key, 8... CP port, 15... N-circuit terminal, 16-OR dart, 1 7-AND r -),
25--Retriggerable multivibrator. Applicant's agent Patent attorney Takehiko Suzue 11- Engraving of drawings (no changes to the contents) Figure 1 Director of the Patent Office Kazuo Wakasugi 1. Indication of the case Patent application No. 135538/1983 3, Person making the amendment Relationship with the case Patent applicant (037) Olympus Optical Industry Ohshu Shiki Co., Ltd. 4, Agent 6, Specification to be amended, Drawings 7, Amendment Contents lIl] Detailed description, engraving of WI side (no changes to the content) - Procedure Neyama Masayo Showa 1959/MΩ - 8th Patent application by Manabu Shiga, Commissioner of the Patent Office, August 2, 1982-13553, Title of the invention Endoscope system 3, relationship with personnel covering correction 1 Patent applicant (() 37) 71 Rimbus Optical 1-Gyo Co., Ltd. 14,
Agent: May 17th Mori Building 6, 1-26 Toranomon, Minato-ku, Tokyo.
Contents of the description and drawings 7, 1st page 1) The second negative line 6th line to the 77th back line in the description [If coarse data is transmitted, it will probably be 1] 2) Correct "endoscope 111" to "endoscope 11" in the 7th line of the 3rd page of the same text. 3) In the 3rd line of the 4th unit, [data setting device 4a1] is corrected to [data setting device connector 4a, l. 4) In the 4th negative line 5th to 6th line. rOR gate 15
1 is corrected by FOR gate 161 and R1. 5) On the 11th and 12th lines of the 6th page, [ICILI for serial communication is replaced with 1c2Ll for serial communication.
And 11 guns. 6) In the 6th line of page 8, [-1 in Figure 3 has been corrected to 1 in Figure 2]. 7) Reference No. 6 15.1 as shown unallocated in Figure 2 of the drawings
Add a and 4a. 8) Revise Figure 4 of the drawings as shown in the attached sheet. 94

Claims (2)

[Claims] (1) An endoscope, a data setting device, an endoscope light source device including a light source that introduces light into the endoscope, and a clock means for setting time by the data setting device, and the data setting device An endoscope system comprising: a connection detection means for detecting a connection between the endoscope light source device and the endoscope light source device; and a means for enabling the time setting of the clock means only when the connection detection means detects the connection. (2) The connection detecting means is configured by means that operates for a certain period of time after starting data transfer from the data setting device to the endoscope light source device.
The endoscopic system described in Section.