JP2003210402A - Electronic endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To change data selected at the initial setting of signal processing data as necessary. <P>SOLUTION: Initial setting switches S1 and S2 for selectively setting specific reference initial data from a plurality of reference initial data are provided in a video scope 50. When specific signal processing data are not written in EEPROM (Electrically Erasable Programmable Read-Only Memory) 57 in the initial setting of the data, the reference initial data corresponding to ON/OFF states of the initial setting switches S1 and S2 are written in the EEPROM 57. Then, the ON/OFF states of the initial setting switches S1 and S2 are stored in the EEPROM 57 and, when the ON/OFF states of the initial setting switches S1 and S2 detected by a scope CPU 56 and the stored ON/OFF states are different from each other, the reference initial data corresponding to the ON/OFF states of the initial setting switches S1 and S2 are newly written in the EEPROM 57. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic endoscope apparatus for inspecting and treating an organ such as a stomach, and more particularly to processing an image signal read from an image pickup device at the tip of the electronic endoscope. Data setting for the signal processing circuit for

[0002]

2. Description of the Related Art In a conventional electronic endoscope apparatus, a signal processing circuit for processing an image signal read from an image pickup device provided at the tip of an electronic endoscope (hereinafter referred to as a videoscope) is an integrated circuit. The color signal processing circuit performs gain control of the color (R, G, B) signals, gamma correction, and color difference signal generation in the signal processing circuit. ROM (Read Only Memor) is used for signal processing setting data, which is a calculation reference value for image signal processing, such as a gain value in gain control and a gamma value in gamma correction.
y) and data rewritable EEPROM (Electronic
It is stored in advance in a non-volatile memory such as an Erasable Programmable ROM), and the data is read from the memory at the time of initial setting of the data of the electronic endoscope device and written in the register related to the signal processing of the signal processing circuit for setting To be done.

The signal processing setting data stored in the memory in advance, that is, the value of the register setting data stored in the register related to the signal processing, takes into consideration the characteristics of the videoscope in which the signal processing circuit is incorporated. Setting data corresponding to each scope (here,
It is ideal that the specified initial data is specified), but if the specified initial data is not stored in the rewritable memory for various reasons, it is a standard data value and is applicable to any videoscope. Corresponding register setting data (hereinafter referred to as standard initial data) is written.

The standard initial data written in the rewritable memory is a characteristic of a videoscope or a processor, such as a color television system (NTSC / PA).
L system), and the number of pixels (low pixels / high pixels) of an image pickup device such as a CCD mounted on a videoscope. At the time of manufacturing the electronic endoscope apparatus, appropriate standard initial data is written in the memory from among the plurality of standard initial data according to the signal processing characteristics of the connected processor and the number of pixels of the image sensor.

[0005]

If incorrect data setting is made when standard initial data is written in the memory at the time of manufacturing the electronic endoscope apparatus, signal processing based on inappropriate data is performed. , Improper video is displayed on the monitor. However, conventionally, the standard initial data once written could not be easily reset. In addition, it was not easy to reset the circuit board and video scope (for high pixels) for a certain function to the circuit board and video scope (for low pixels) for another function.

Therefore, it is an object of the present invention to obtain an electronic endoscope apparatus capable of changing the standard initial data selected in the initial setting of register setting data relating to signal processing as necessary.

[0007]

An electronic endoscope apparatus according to the present invention is an electronic endoscope apparatus including a videoscope having an image pickup device, and a processor to which the videoscope is connected, and a signal processing circuit. , Memory, data selection means, standard initial data setting means, signal processing register writing means,
And data change detection means. The signal processing circuit is a signal processing circuit that processes an image signal corresponding to a subject read from the image sensor, and is configured by an integrated circuit or the like. The signal processing circuit processes an image signal based on register setting data stored in a register related to signal processing. Here, the register setting data includes calculation coefficients for generating R, G, B primary color signals, R and B gain values for R, G, B gain control, calculation coefficients for color difference signal generation, and gamma correction values for gamma correction. Represents data including calculation reference value.

The register setting data is set to specific initial data suitable for the connected scope, and is stored in the memory at the time of manufacturing the signal processing circuit. However, for example, the specific initial data is not written in the memory at the beginning of manufacturing the signal processing circuit. The standard initial data setting means writes the standard initial data as signal processing data in the memory when initial setting of the electronic endoscope apparatus is performed, that is, when the electronic endoscope apparatus is manufactured in a factory, when the specific initial data is not written in the memory. . However, the standard initial data is standard register setting data compatible with all video scopes, and is, so to speak, data having a value of the greatest common divisor. The signal processing register writing means reads out the signal processing data, that is, the specific initial data or the standard initial data from the memory, and writes the signal processing data in the register related to the signal processing. In the manufacturing process of the electronic endoscope apparatus, the written standard initial data is rewritten to more suitable data as needed.

The value of the standard initial data differs depending on the signal processing method and the characteristics of the image pickup device in the videoscope. For example, as a color television system, NTSC system, PA
There is an L system, and standard initial data compatible with the NTSC system and standard initial data compatible with the PAL system are prepared.
Further, for each color television system, the data value also differs according to the number of pixels of the image pickup element, and standard initial data corresponding to high pixels and standard initial data corresponding to low pixels are prepared. According to the present invention, a plurality of standard initial data (first standard initial data, second standard initial data,
The third standard initial data and the fourth standard initial data) are prepared (stored in the ROM or the like), and the data selecting means is any one of the plurality of standard initial data.
It is provided to set one standard initial data.
The operator selects the standard initial data suitable for the electronic endoscope device to be manufactured by operating the data selection means, and further, a state in which specific standard initial data is set (hereinafter, set state). Can be changed to other standard initial data settings.

The data change detection means detects whether or not a setting state change request has been issued by detecting a predetermined operation on the data selection means. The standard initial data setting means writes the standard initial data newly selected by the data selecting means into the memory, and the register writing means reads the standard initial data according to the changed selected state from the memory and writes the standard initial data into the register. Characterize.

In the electronic endoscope apparatus according to the present invention, specific standard initial data can be set once at the time of manufacturing the electronic endoscope apparatus, and then can be reset (switched) to another standard initial data as necessary. it can. At this time, the operator only needs to operate the data selection means, and the standard initial data settings are automatically changed.

[0012] Among the plurality of standard initial data, the data selecting means selectively switches the first to fourth standard initial data in order to switch the opposing (paired) data as necessary. It is better to be able to switch settings.

As the data selecting means, a changeover switch for switching between ON / OFF states is preferable. The operator changes the setting state by switching the changeover switch. The data change detecting means is ON / O of the changeover switch.
A request to change the setting state is detected based on the FF state.
Regarding the detection of the change of the setting state, it is preferable to store the setting state as data and detect the change of the setting state from the stored setting state. That is, the electronic endoscope apparatus further includes a setting state storage unit that stores the setting state in the data selecting unit in the setting state storage memory, and the data change detecting unit includes the setting state and the data stored in the setting state storage memory. Based on the setting state of the selecting means, it is preferable to detect that the data selecting means is operated to change the setting state. For example,
The ON / OFF state of the changeover switch is stored in the setting state storage memory, and if the current ON / OFF state of the changeover switch is different from the stored set state, it is detected that there is a change request. The standard initial data setting means writes the newly selected standard initial data in the memory based on the setting state of the data selecting means.

Alternatively, as the data selecting means, switching of standard initial data (for example, N
A personal computer is preferable to facilitate the switching from the TSC system to the PAL system. When the operator performs a predetermined operation on the personal computer, a standard initial data change request command is transmitted. The data change detecting means detects command data for setting change sent from the personal computer. Regarding the change of the standard initial data, it is preferable to change the data based on the setting state of the stored data.
That is, the electronic endoscope apparatus further includes setting state storage means for storing the setting state in the data selecting means in the setting state storage memory, and the data change detecting means is for changing the setting state with respect to the data selecting means. Detects whether an input operation has been performed. For example, it is preferable to detect that the input operation is performed by receiving the command data of the change request. The standard initial data setting means writes the newly selected standard initial data in the memory based on the setting state stored in the setting state storage memory. For example, if the setting state of the NTSC system is stored,
Switch to the PAL system setting state.

The videoscope of the electronic endoscope apparatus of the present invention is a videoscope of the electronic endoscope apparatus having an image pickup element and connected to a processor, and an image signal corresponding to a subject read from the image pickup element. A signal processing circuit for processing a signal processing circuit based on register setting data stored in a register related to signal processing, and a rewritable memory in which specific initial data is stored in advance as signal processing data. Memory, a data selection means for setting any one standard initial data among a plurality of standard initial data, and a standard initial data selected by the data selection means when the specific initial data is not written in the memory. Standard initial data setting means for writing data to the memory, and register setting data are read from the memory and signaled. The register initial writing means for writing to a logical register, and the data change detecting means for detecting whether or not the setting state change request is made by detecting the operation on the data selecting operation means, and the standard initial data setting means, The data selection means writes the newly selected standard initial data in the memory, and the signal processing register writing means reads the written standard initial data from the memory and writes it in the register. Further, the program of the present invention is an electronic endoscope apparatus including a videoscope having an image pickup device and a processor to which the videoscope is connected, and processes an image signal corresponding to a subject read from the image pickup device. A signal processing circuit, which includes a signal processing circuit that processes based on register setting data stored in a register, and a rewritable memory that stores in advance specific initial data as signal processing data A program for executing an initialization process executed in an electronic endoscope apparatus, comprising: a data selection unit for setting any one of standard initial data among a plurality of standard initial data; If the data has not been written, the standard initial data selected by the data selection means is written in the memory. Whether the initial data setting means, the signal processing register writing means for reading the register setting data from the memory and writing the same in the register of the signal processing circuit, and the change request of the setting state by detecting the operation for the data selection operating means Is a program for operating the data change detecting means for detecting the standard initial data set by causing the standard initial data setting means to write the standard initial data newly selected by the data selecting means into the memory. It is characterized in that the register writing means is caused to function so as to read from the memory and write it into the register.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An electronic endoscope apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of the electronic endoscope apparatus according to the first embodiment. An electronic endoscope device including a videoscope and a processor is a device for performing an inspection, an operation, or the like on an organ such as a stomach. When the inspection or the like is started, the videoscope allows the observation region to be imaged. Therefore, it is inserted into the body.

In the electronic endoscope apparatus, CC which is an image pickup device
A videoscope 50 having a D54 and a processor 10 for processing an image signal read from the CCD 54 are provided, and a monitor 32 for displaying a subject image is a processor 1.
Connected to 0. The video scope 50 is the processor 10
And a keyboard 34 is connected to the processor 10.

When a lamp lighting switch (not shown) is turned on, power is supplied to the lamp 12 from the lamp power supply 11 including the lamp control section 11A. The light emitted from the lit lamp 12 is incident on the optical fiber bundle 51 provided in the videoscope 50 via the condenser lens 14 at the incident end 5 thereof.
It is incident on 1A. The optical fiber bundle 51 is an optical fiber that transmits the light emitted from the lamp 12 to the tip side of the videoscope 50 having the observation site, and the light that has passed through the optical fiber bundle 51 is emitted from the emission end 51B. As a result, the observation site S is irradiated with light via the light distribution lens 52 which is a diffusion lens.

The light reflected at the observation region S reaches the light receiving surface of the CCD 54 through the objective lens 53, whereby a subject image of the observation region S is formed on the light receiving surface of the CCD 54. In the present embodiment, the single-plate simultaneous type is applied as a color imaging method, and yellow (Ye), cyan (Cy), magenta (Mg), and green (G) color elements are in a checkered pattern on the light receiving surface of the CCD. Complementary color filters (not shown) arranged in a line are arranged so as to correspond to the respective pixels on the light receiving surface. Then, in the CCD 54, an image signal of a subject image corresponding to a color passing through the complementary color filter is generated by photoelectric conversion, and one frame or one frame is generated at predetermined time intervals.
The image signals for the fields are sequentially read according to the color difference line sequential method. As the color television system, for example, the NTSC system is applied, which is 1/30 (1/6).
Image signals for one frame (one field) are sequentially read out every 0) second intervals and sent to the signal processing circuit 55 configured by an IC chip.

The signal processing circuit 55 includes an initial process circuit for performing amplification processing, a signal separation processing circuit for separating a luminance signal and a chrominance signal, and R, G, R for generating primary color signals of R, G, B. A B matrix circuit, an R, G, B gain circuit for adjusting R, G, B gains, a gamma correction circuit for gamma correction, a color matrix circuit for generating a luminance signal, a color difference signal, and the like are included. (Neither is shown). By performing various processes on the image signal input to the signal processing circuit 55 in each circuit,
A video signal is generated. The generated video signal is sent to the processor signal processing circuit 28, and the luminance signal is sent to the dimming circuit 23. Further, a synchronization signal or the like at a predetermined timing is sent from the signal processing circuit 55 to the timing control circuit 30 described later in accordance with the luminance signal of one frame (one field) sent to the light control circuit 23 in sequence.

In the processor signal processing circuit 28, the video signal sent from the signal processing circuit 55 is subjected to predetermined processing. The processed video signals are NTSC composite signals, Y / C separated signals (S video signals), RGB
It is output to the monitor 32 as a video signal such as a separation signal, so that the subject image is displayed on the monitor 32.

A processor CPU 24 in the system control circuit 22 controls the entire processor 10 and outputs a control signal to each circuit such as the dimming circuit 23, the lamp control section 11A and the processor signal processing circuit 28. In the timing control circuit 30, a clock pulse for adjusting the processing timing of the signal is output to each circuit in the processor 10, and a synchronizing signal accompanying the video signal is sent to the processor signal processing circuit 28.

A diaphragm 16 for adjusting the amount of light applied to the subject S is provided between the incident end 51A of the light guide 51 and the condenser lens 14, and is opened and closed by driving a motor 18. In the present embodiment, the dimming circuit 23
The light amount of the light passing through the diaphragm 16, that is, the light irradiated to the subject S is adjusted by. The brightness signal output from the signal processing circuit 55 is converted into a digital brightness signal by an A / D converter (not shown), and then the dimming circuit 2
Input to 3. Based on this brightness signal, a control signal is sent from the light control circuit 23 to the motor driver 20, and the motor 18
Are driven by the motor driver 20. As a result, the diaphragm 16 opens to a predetermined opening.

The video scope 50 is provided with a scope CPU 56 for controlling the entire video scope 50 and a data rewritable EEPROM 57, and a program relating to scope control is stored in the R in the scope CPU 56.
It is stored in the OM 58. Further, data relating to the characteristics of the scope, that is, setting data relating to the number of pixels of the CCD 54 and signal processing (register setting data relating to signal processing) are stored in the ROM 58 and the EEPROM 57. The scope CPU 56 controls the signal processing circuit 55, reads the data related to the signal processing from the EEPROM 57 and the ROM 58, and writes the data in the register 55A of the signal processing circuit 55. When the video scope 50 is connected to the processor 10, data is transmitted and received between the scope CPU 56 and the system control circuit 22, and the scope CPU 56 transfers to the system control circuit 22 or the system control circuit 22 transfers to the scope CPU 56 as required. Data is sent.

Initial setting switches S1 and S provided inside the video scope 50 and connected to the scope CPU 56.
Reference numeral 2 is a dedicated switch for selecting specific standard initial data from a plurality of standard initial data prepared in advance and setting it in the EEPROM 57. However, the standard initial data represents data having a standard value corresponding to any video scope. In this embodiment, there is standard initial data corresponding to each of the NTSC and PAL systems as the color television system, and further, in each television system, the standard initial data corresponding to the number of pixels of the CCD 54, that is, each of the high pixel and the low pixel. There is. These standard initial data are stored in advance in the ROM 58, and ON / O of the initial setting switches S1 and S2 are turned on.
According to the FF state, the selected standard initial data is written in the EEPROM 57 by the scope CPU 56.

The front panel 96 is provided with a setting switch (not shown) for setting a reference luminance value which is a standard in automatic light control, and is set by an operator operating the setting switch. A signal according to the value is sent to the system control circuit 22. The reference brightness value data is temporarily stored in the RAM 26 and is sent from the system control circuit 22 to the dimming circuit 23 as needed. When a key operation is performed on the keyboard 34 in order to display character information such as patient information on the monitor 32, a signal corresponding to the operation of the keyboard 34 is input to the system control circuit 22, and the processor signal processing is performed based on the signal. In circuit 28, the character signal is superimposed on the video signal.

FIG. 2 shows the scope CPU of the first embodiment.
FIG. 10 is a diagram showing a main routine that is executed in 56 and includes a data initialization process. Videoscope 50
When the power supply of the video scope 50 is turned on by connecting to the processor 10, the main routine is started.

In step 101, the scope CPU 56
The initial settings for and variables are initialized. In step 102, setting data (specific initial data) relating to signal processing suitable for the connected videoscope 50 is EE.
It is determined whether or not it has been written in the PROM 57 in advance, that is, whether or not it has been written at the time of manufacturing the signal processing circuit 55. Here, the setting data relating to the signal processing includes the R and B gain values in the R, G and B gain control, the calculation coefficient (α,
β), a gamma correction value (γ) at the time of γ correction, data such as a calculation coefficient at the time of color difference signal generation are included. Also,
Whether or not the specific initial data has been written is determined when all the data bits of the specific address have a predetermined value (for example, 1), that the specific initial data has not been written.

When it is determined in step 102 that the specific initial data is not written in the EEPROM 57, the process proceeds to step 103. On the other hand, if it is determined in step 102 that the specific initial data has been written in the EEPROM 57 in advance, the process proceeds to step 105. In step 105, the initial setting switches S1 and S2
It is determined whether the ON / OFF state of is changing. The initial setting switches S1 and S2 are set in advance when the signal processing circuit 55 is manufactured, and are turned on.
The ON / OFF setting state is stored in the EEPROM 57. When it is determined in step 105 that the ON / OFF setting state detected by the scope CPU 56 and the ON / OFF setting state stored in the EEPROM 57 are not changed, the process proceeds to step 106. On the other hand, step 10
ON / OFF detected by the scope CPU 56 in 5
When it is determined that the setting state and the stored ON / OFF setting state are changed, that is, it is determined that the initial setting switches S1 and S2 are operated to change the standard initial data initially set for some reason. If yes, go to step 103.

In step 103, the changed ON / OFF setting state of the initial setting switches S1 and S2 is detected and stored in the EEPROM 57. In step 104, the initial setting switches S1 and S2 are turned on / off.
According to the F setting state, standard initial data selected by the initial setting switches S1 and S2 among the plurality of standard initial data is written in the EEPROM 57.

FIG. 3 is a diagram showing a subroutine of step 104 of FIG. FIG. 4 is a diagram showing an address map of the ROM 58.

In this embodiment, the initial setting switch S1,
When both S2 are in the ON state, the NTSC system is selected as the color television system and the standard initial data (hereinafter, referred to as dataA) corresponding to the high pixel number is selected, and the initial setting switch S1 is in the ON state. When the initial setting switch S2 is in the OFF state, the standard initial data corresponding to the NTSC system as the color television system and the low pixel number as the pixel number (data
B) is selected. Initial setting switch S1 is OF
In the F state, when the initial setting switch S2 is in the ON state,
Standard initial data corresponding to the PAL system as the color television system and the high pixel number as the number of pixels (hereinafter, d
ataC) is selected, and the initial setting switch S1,
When both S2 are in the OFF state, the PAL system is selected as the color television system and the standard initial data (hereinafter referred to as dataD) corresponding to the low pixel number is selected. dataA, dataB, data
C and dataD are stored in the ROM 58 in advance and are read out as needed (see FIG. 4). here,
dataA, dataB, dataC, dataD are
Each represents a group of data.

In step 201, the initial setting switch S
It is determined whether 1 is in the ON state, that is, whether data A or data B corresponding to the NTSC system is selected. When it is determined that the initial setting switch S1 is in the ON state, the process proceeds to step 202, and it is determined whether the initial setting switch S2 is in the ON state, that is, whether or not dataA corresponding to a high pixel is selected. When it is determined that the initial setting switch S2 is in the ON state, the process proceeds to step 203, and it is detected that dataA is selected as the standard initial data. On the other hand, when it is determined in step 202 that the initial setting switch S2 is not in the ON state, that is, the data B corresponding to the low pixel is selected, the process proceeds to step 204 and da
Detect that taB is selected as the standard initial data. When step 203 or step 204 is executed, the process proceeds to step 208.

When it is determined in step 201 that the initial setting switch S1 is not in the ON state, that is, the data C or data D corresponding to the PAL system is selected, the process proceeds to step 205 and the initial setting switch S2 is in the ON state. If so, it is determined whether or not the high pixel is selected. Initial setting switch S2 is O
If it is determined to be in the N state, the process proceeds to step 206 and d
Detects that ataC is selected as the standard initial data. On the other hand, when it is determined in step 205 that the initial setting switch S2 is not in the ON state, the process proceeds to step 207, and it is detected that dataD is selected as standard initial data. When step 206 or step 207 is executed, the process proceeds to step 208.

In step 208, dataA to dataA
The data selected from aD is written in the EEPROM 57. When step 208 is executed, the process returns to step 104 in FIG.

At step 106, the setting data relating to the signal processing including the standard initial data of any one of dataA to dataD written in the EEPROM 57 and the specific initial data written in the ROM 58 is read. Then, in step 107, the read register setting data is stored in the register 5 of the signal processing circuit 55.
5A is written. In step 108, a repetitive process is executed, and a process such as a process for a command from the processor is executed as a subroutine. Step 108 is repeatedly executed until the power of the videoscope 50 is turned off.

As described above, according to the first embodiment, the initial setting switches S1 and S2 detected by the scope CPU 56 are detected.
It is determined whether or not there is a setting change of the standard initial data based on the ON / OFF state of No. 1 and the ON / OFF state of the initial setting switches S1 and S2 stored in the EEPROM 57 (step 105). When it is determined that there is a setting change request, standard new data (any one of dataA to dataD) corresponding to the detected ON / OFF states of the initial setting switches S1 and S2 is newly stored in the EEPROM 57. Written in. As a result, it is possible to easily reset the data of the circuit board and video scope (for high pixels) for a certain function to the circuit board and video scope (for low pixels) for another function.
Therefore, it is not necessary to prepare a plurality of circuit boards for each function, and only one type is required, which leads to improvement in productivity and reduction in manufacturing cost.

Next, a second embodiment will be described with reference to FIGS. In the second embodiment, the standard initial data setting is switched by operating the personal computer. In the second embodiment, NTS
One of dataE and dataF corresponding to the C / PAL system is selected.

FIG. 5 is a block diagram of an electronic endoscope apparatus according to the second embodiment.

The personal computer 100 is connected to the video scope 50 via the serial cable SC, and data is mutually communicated between the personal computer 100 and the scope CPU 56 of the video scope 50. Predetermined operations on the personal computer (for example, operation of function keys on the keyboard)
Is performed, one set standard initial data is switched to another standard initial data.

FIG. 6 is a diagram showing a part of a main routine of the scope CPU 56 in the second embodiment.
This is an iterative process corresponding to step 108 in FIG.

In step 301, the videoscope 50
Hard copy execution switch, VT
A process for an operation of a switch (not shown) such as an R execution switch is performed. In step 302, processing relating to data communication with the processor 10 is performed. And
In step 303, processing relating to communication with the personal computer 100 is performed, as will be described later.

FIG. 7 is a diagram showing a subroutine of step 303 of FIG.

In step 401, it is determined whether command data has been transmitted from the personal computer 100. If it is determined that the command data has not been transmitted, the subroutine ends as it is. On the other hand, if it is determined that the command data has been transmitted, step 4
Go to 02. In step 402, it is determined whether or not the sent command data is data according to the setting switching of the standard initial data (hereinafter referred to as command K). If it is determined that the sent command data is not command K, then in step 408, another process corresponding to the sent command is executed. on the other hand,
If it is determined in step 402 that the command data is command K, the process proceeds to step 403.

In step 403, it is judged whether the switching setting variable vs is 1. Here, the switching setting variable v
s is a variable for storing the setting state (NTSC system and PAL system), and is stored in the EEPROM 57. NTSC when the switching setting variable vs is 0
Method dataE is selected and the switching setting variable vs
When is 1, PAL dataF is selected.

In step 403, the switching setting variable vs
Is determined to be 1, that is, the PAL method d
If it is determined that ataF has been selected, the process proceeds to step 404. In step 404, the switching setting variable vs
Is set to 0 and stored in the EEPROM 57. Then, in step 405, dat according to the NTSC system is used.
aE is written in the EEPROM 57. Step 40
Execution of steps 6 and 407 is the same as execution of steps 106 and 107 of FIG. 2, and register setting data including dataE is read from the EEPROM 57 and written in the register 55A.

On the other hand, if it is determined in step 403 that the switching setting variable vs is not 1, that is, NTS.
When it is determined that the C method dataE has been selected, the process proceeds to step 408, and the switching setting variable vs is set to 1 and stored in the ROM 58. And step 4
In 09, dataF corresponding to the PAL system is EEPRO
Written to M57. When the process of step 409 is completed, the process proceeds to steps 406 and 407, the register setting data is read out and written in the register 55A.

As described above, in the second embodiment, when the operation for changing the setting of the standard initial data is performed on the personal computer 100, the command data is detected (step 402). And EEPROM
Based on the setting state variable vs stored in 57, the newly selected standard initial data is written in the EEPROM 57 (steps 403 to 405, 408, 40).
9).

Instead of the personal computer 100, the standard initial data may be set and changed by operating the keyboard 34 connected to the processor 10. In this case, the serial cable SC becomes unnecessary, and the system control circuit 22 of the processor 10 sends a command to the scope CPU 56 of the videoscope 50.
K is transmitted, and the subroutine of FIG. 7 is executed in step 302 of FIG.

Instead of selecting the NTSC system / PAL system, it is possible to select only high pixels / low pixels.
Also, as in the first embodiment, the NTSC system / PAL is used.
A configuration in which high pixel / low pixel can be selected for each system may be adopted. Further, the present invention is not limited to the data corresponding to the NTSC system / PAL system and the high pixel / low pixel, and may be configured to select specific data from various standard initial data regarding the characteristics of the videoscope 50 and the processor 10. Good.

In the first and second embodiments, the signal processing circuit 55 is provided in the videoscope 50, but it may be provided in the processor 10.

[0053]

As described above, according to the present invention, the standard initial data selected in the initial setting of the signal processing data can be changed as necessary.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic endoscope apparatus according to a first embodiment.

FIG. 2 is a main routine including initialization, which is executed in a scope CPU.

FIG. 3 is a diagram showing a standard initial data write process, which is a subroutine of step 104 of FIG. 2;

FIG. 4 is a diagram showing an address map of a ROM in which standard initial data is stored.

FIG. 5 is a block diagram of an electronic endoscope apparatus according to a second embodiment.

FIG. 6 is a diagram showing a repetitive process which is a part of a main routine of a scope CPU in the second embodiment.

7 is a diagram showing a subroutine for step 303 of FIG. 6 and showing a process for a command from a personal computer. FIG.

[Explanation of symbols]

10 processors 50 video scope 54 CCD (imaging device) 55 Signal processing circuit 55A register 56 Scope CPU 57 EEPROM (memory, setting state memory) 58 ROM 100 Personal computer (data selection means) S1, S2 initial setting switch (data selection means)

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[Procedure amendment]

[Submission date] January 27, 2003 (2003.1.2
7)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

The register setting data is set to specific initial data suitable for its own scope, and is stored in the memory when the signal processing circuit is manufactured. However, for example, the specific initial data is not written in the memory at the beginning of manufacturing the signal processing circuit. The standard initial data setting means writes the standard initial data as signal processing data in the memory when initial setting of the electronic endoscope apparatus is performed, that is, when the electronic endoscope apparatus is manufactured in a factory, when the specific initial data is not written in the memory. . However, the standard initial data is standard register setting data compatible with all video scopes, and is, so to speak, data having a value of the greatest common divisor. The signal processing register writing means is
The signal processing data, that is, the specific initial data or the standard initial data is read from the memory and written in the register related to the signal processing. In the manufacturing process of the electronic endoscope apparatus, the written standard initial data is rewritten to more suitable data as needed.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

In step 101, the scope CPU 56
The initial settings for and variables are initialized. In step 102, setting data (specific initial data) relating to signal processing suitable for the video scope 50 of its own is EEPR.
It is determined whether or not it has been written in the OM 57 in advance, that is, whether or not it has been written at the time of manufacturing the signal processing circuit 55. Here, the setting data related to signal processing includes
R, B gain values in R, G, B gain control, operation coefficients (α, β) of R, G, B matrix circuit,
It includes data such as a gamma correction value (γ) at the time of γ correction and a calculation coefficient at the time of generating a color difference signal. Further, whether or not the specific initial data has been written is determined when all the data bits of the specific address have a predetermined value (for example, 1), it is determined that the specific initial data has not been written.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0048

[Correction method] Change

[Correction content]

On the other hand, if it is determined in step 403 that the switching setting variable vs is not 1, that is, NTS.
When it is determined that the C method dataE has been selected, the process proceeds to step 408, the switching setting variable vs is set to 1 and stored in the EEPROM 57 . Then, in step 409, the dataF corresponding to the PAL system is EE
It is written in the PROM 57. When the process of step 409 is completed, the process proceeds to steps 406 and 407, the register setting data is read out and written in the register 55A.

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

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Claims (8)

[Claims] 1. An electronic endoscope apparatus including a videoscope having an image pickup device and a processor to which the videoscope is connected, the signal being for processing an image signal corresponding to a subject read from the image pickup device. A signal processing circuit that processes based on register setting data stored in a register related to signal processing, and a rewritable memory that stores specific initial data as the register setting data in advance. Possible memory, data selecting means for selecting and setting any one of standard initial data among a plurality of standard initial data, and the data selecting means when the specific initial data is not written in the memory Standard initial data setting means for writing the standard initial data selected in step 1 to the memory; Register writing means for reading data setting data from the memory and writing it in the register, and data change detecting means for detecting whether or not a setting state change request is made by detecting a predetermined operation on the data selecting operation means. The standard initial data setting means writes the standard initial data newly selected in the data selecting means to the memory, the register writing means reads the written standard initial data from the memory, and An electronic endoscope device characterized by writing in a register. 2. The data selection means has a changeover switch for switching between ON and OFF states, and the data change detection means has an ON / OFF state for the changeover switch.
The electronic endoscope apparatus according to claim 1, wherein a request for changing the setting state is detected based on the OFF state. 3. A setting state storage means for storing the setting state in the data selection means in a setting state storage memory, wherein the data change detection means includes the setting state stored in the setting state storage memory and the setting state storage means. On the basis of the setting state of the data selecting means, it is detected that the operation for the data selecting means is performed to change the setting state, and the standard initial data setting means determines, based on the setting state of the data selecting means, 3. The electronic endoscope apparatus according to claim 1, wherein the newly selected standard initial data is written in the memory. 4. The electronic device according to claim 1, wherein the data selection unit is a personal computer, and the data change detection unit detects command data for setting change sent from the personal computer. Endoscopic device. 5. A setting state storage means for storing the setting state in the data selection means in a setting state storage memory, wherein the data change detection means changes the setting state with respect to the data selection means. Detecting whether or not an input operation is performed, and the standard initial data setting means writes newly selected standard initial data in the memory based on the setting state stored in the setting state storage memory. The electronic endoscope apparatus according to any one of claims 1 and 4, wherein: 6. The standard initial data is NTSC.
System and first standard initial data corresponding to high pixels regarding the number of pixels of the image pickup device, second standard initial data corresponding to NTSC system and low pixels regarding the number of pixels of the image pickup device, PAL system and the above-mentioned imaging The data selection means includes third standard initial data corresponding to a high pixel number regarding the number of pixels of the element and fourth standard initial data corresponding to a low pixel number regarding the pixel number of the imaging element according to the PAL method. The electronic endoscope apparatus according to claim 1, wherein the first to fourth standard initial data can be selectively switched and set. 7. A videoscope of an electronic endoscope apparatus having an image pickup device and connected to a processor, comprising a signal processing circuit for processing an image signal according to a subject read from the image pickup device, A signal processing circuit for processing based on register setting data stored in a register related to signal processing; a rewritable memory capable of pre-storing specific initial data as the register setting data; Data selecting means for selecting and setting any one of the standard initial data of the standard initial data, and the standard initial data selected by the data selecting means when the specific initial data is not written in the memory. Standard initial data setting means for writing data to the memory, and the register setting data stored in the memory. Register writing means for reading and writing in a register relating to the signal processing; and data change detecting means for detecting whether or not a setting state change request is made by detecting a predetermined operation for the data selection operating means, The standard initial data setting means writes the standard initial data newly selected by the data selecting means to the memory, and the register writing means reads the written standard initial data from the memory and writes the standard initial data to the register. A videoscope for electronic endoscopy. 8. An electronic endoscope apparatus including a videoscope having an image pickup device and a processor to which the videoscope is connected, the signal being for processing an image signal corresponding to a subject read from the image pickup device. A processing circuit, which is a signal processing circuit that processes based on register setting data stored in a register related to signal processing, and a rewritable memory, in which specific initial data can be stored in advance as the register setting data. Is a program for executing an initialization process executed in an electronic endoscope apparatus having a different memory, which is for selecting and setting any one of the standard initial data among a plurality of standard initial data. When the specific initial data is not written in the data selecting means and the memory, the data selecting means Standard initial data setting means for writing the selected standard initial data in the memory, signal processing register writing means for reading the register setting data from the memory and writing it in a register related to the signal processing, and the data selection operation means It is a program for causing the data change detection means for detecting whether or not a setting state change request is made by detecting a predetermined operation, and the standard initial data newly selected by the data selection means is A program for causing the standard initial data setting unit to function so as to write to a memory, and causing the register writing unit to function so as to read the written standard initial data from the memory and write to the register.