JP6987600B2 - Ultrasound diagnostic imaging equipment - Google Patents

Description

Embodiments of the present invention relate to an ultrasonic diagnostic imaging apparatus.

In recent years, when inspecting a subject, a modality that collects internal information of the subject and images the inside of the subject based on the collected information to generate a medical image may be used. As this modality, for example, an ultrasonic diagnostic imaging apparatus can be mentioned. The ultrasonic image diagnostic apparatus receives the reflected signal of the ultrasonic wave transmitted toward the diagnosis target site and generates an ultrasonic image regarding the diagnosis target site.

As described above, the ultrasonic diagnostic imaging device is a very useful modality, but for example, due to a hardware or software defect, the ultrasonic diagnostic imaging device itself does not intend to access (hereinafter, such access is "non-". Intentional access ") may occur.

Upon receiving such unintentional access, the ultrasonic diagnostic imaging apparatus may have a phenomenon called, for example, a system lock or a blue screen. When this phenomenon occurs, restoration work must be performed by temporarily shutting down the ultrasonic diagnostic imaging system. The recovery work will stop the user's diagnostic processing. In addition, when the above-mentioned phenomenon occurs, no error log remains in many cases. Therefore, it becomes difficult to investigate the cause after that, and it takes time to take countermeasures.

On the other hand, an example of countermeasures against unintentional access as described above is disclosed in the following patent documents, for example, regarding measures against access such as malicious unauthorized intrusion from the outside via a network. There is.

Japanese Patent Application No. 2004-140618

However, the response here is only access to the ultrasonic diagnostic imaging device from the outside via the network, and is not related to the network, and is a response to unintentional access within the ultrasonic diagnostic imaging device. No.

The present invention has been made to solve the above problems, and an object of the present invention is to recover as much as possible without stopping the device when unintentional access occurs in the ultrasonic diagnostic imaging device. It is an object of the present invention to provide an ultrasonic diagnostic imaging apparatus capable of making it possible.

The ultrasonic diagnostic imaging apparatus according to the embodiment includes a transmission / reception control circuit and a control circuit. The transmission / reception control circuit controls transmission of ultrasonic waves from the ultrasonic probe to the diagnosis target site and reception of reflected signals. Further, the transmission / reception control circuit controls to stop the access when it is determined that the access to the control circuit or the access between each unit constituting the transmission / reception control circuit is an unintentional access. The transmission / reception control circuit determines that the access is unintentional when the access does not match the predetermined access pattern from each part. The control circuit controls the transmission / reception control circuit to display an ultrasonic image generated based on the reflected signal on the display.

The functional block diagram which functionally shows the whole structure of the ultrasonic diagnostic imaging apparatus in embodiment. The functional block diagram which functionally shows the whole structure of the transmission / reception control circuit in embodiment. An explanatory diagram showing the structure of data transmitted and received in the ultrasonic diagnostic imaging apparatus according to the embodiment. Explanatory drawing which shows the relationship between the access pattern and the code which shows the access pattern. The explanatory view which shows the relationship between the source ID, the access pattern, and the access data size given to each part constituting the transmission / reception control circuit in embodiment. In the embodiment, a sequence diagram showing a flow in which a transmission / reception control circuit determines unintentional access. An explanatory diagram showing the contents of a log saved when the transmission / reception control circuit determines that the access is unintentional in the embodiment. In the embodiment, a sequence diagram showing a flow of performing recovery processing when the transmission / reception control circuit determines that the access is unintentional. In the embodiment, a sequence diagram showing a flow in which a transmission / reception control circuit determines unintentional access with reception of beam data. An explanatory diagram showing the contents of a log saved when the transmission / reception control circuit determines that the access is unintentional due to the reception of beam data in the embodiment. In the embodiment, a sequence diagram showing a flow until the beam data is transferred to the image processing circuit again when the transmission / reception control circuit determines that the access is unintentional.

Hereinafter, embodiments will be described in detail with reference to the drawings.

[Configuration of ultrasonic diagnostic imaging equipment]
FIG. 1 is a functional block diagram functionally showing the overall configuration of the ultrasonic diagnostic imaging apparatus 1 according to the embodiment. As shown in FIG. 1, the ultrasonic diagnostic imaging apparatus 1 is a device main body in which an ultrasonic probe 2 that transmits / receives ultrasonic waves (transmission / reception) to a subject and the ultrasonic probe 2 are detachably connected to each other. It is equipped with 3.

The ultrasonic diagnostic imaging apparatus 1 is an example of a medical diagnostic imaging apparatus capable of non-invasively examining the internal structure of a subject, the blood flow state, and the like. The ultrasonic diagnostic imaging apparatus 1 transmits ultrasonic waves toward the inside of a subject from an ultrasonic probe 2 provided with a vibrator (piezoelectric vibrator) at the tip. Then, the reflected wave generated by the mismatch of the acoustic impedance inside the subject is received by the vibrator of the ultrasonic probe 2. An ultrasonic image is generated based on the received signal thus obtained.

The ultrasonic probe 2 transmits ultrasonic waves into the subject by each ultrasonic vibrator to scan the scan area, and receives the reflected wave from the subject as a reflected signal. In addition, as this scan, there are various scans such as B mode scan and Doppler mode scan. Further, the ultrasonic probe 2 includes sector scanning, linear scanning, convex scanning, and the like, and is arbitrarily selected according to the diagnosis target site.

In the embodiment of the present invention, a configuration in which the ultrasonic probe 2 is included in the configuration of the ultrasonic diagnostic imaging apparatus 1 will be described as an example, but the ultrasonic probe 2 is an essential component in the following description. is not it. Therefore, the configuration of the ultrasonic diagnostic imaging apparatus 1 does not necessarily have to include an ultrasonic probe.

The apparatus main body 3 includes a transmission circuit 31, a reception circuit 32, a signal processing circuit 33, a memory 34, and a transmission / reception control circuit 35. The transmission circuit 31 transmits a drive signal to the ultrasonic probe 2. The receiving circuit 32 receives the reflected signal from the ultrasonic probe 2. The signal processing circuit 33 processes the reflected signal. The memory 34 stores control parameters transmitted to the transmission circuit 31, the reception circuit 32, and the like. The transmission / reception control circuit 35 controls the transmission circuit 31, the reception circuit 32, the signal processing circuit 33, and the memory 34. In addition, various signals are exchanged with the control circuit 40 described later.

The transmission circuit 31, the reception circuit 32, the signal processing circuit 33, and the memory 34, which are controlled by the transmission / reception control circuit 35, are shown in the frame shown by the broken line in FIG.

Further, the apparatus main body 3 includes an image processing circuit 36, a display 37, an input circuit 38, a storage circuit 39, and a control circuit 40 for controlling each unit. The image processing circuit 36 generates an ultrasonic image. The display 37 displays the generated ultrasound image and information indicating that unintentional access has occurred. The input circuit 38 receives a signal input by being input-operated by a user such as an inspector.

The storage circuit 39 stores an ultrasonic image or the like generated by the image processing circuit 36. Further, the control circuit 40 controls each part of the ultrasonic diagnostic imaging apparatus 1. Further, these circuits are connected to each other by a bus (not shown in FIG. 1), and various signals can be exchanged. Further, in FIG. 1 and FIG. 2 described later, the flow of control data is indicated by a broken line arrow, the flow of control data and image data is indicated by a dashed line, and the flow of image data is indicated by a solid line. The detailed functions of each of these circuits will be further described below.

The transmission circuit 31 receives a drive signal for generating ultrasonic waves in the ultrasonic probe 2, that is, an electric pulse signal applied to each piezoelectric vibrator (hereinafter referred to as “drive pulse”) based on the control by the transmission / reception control circuit 35. It is generated and its drive pulse is transmitted to the ultrasonic probe 2. The transmission circuit 31 includes circuits (not shown) such as a reference pulse generation circuit, a delay control circuit, and a drive pulse generation circuit, and each circuit fulfills the above-mentioned functions.

Further, the receiving circuit 32 receives the reflected signal which is the received signal from the ultrasonic probe 2, performs phasing addition to the received signal, and outputs the signal acquired by the phasing addition to the signal processing circuit 33. do.

The signal processing circuit 33 generates various data (beam data) using the received signal from the ultrasonic probe 2 supplied from the receiving circuit 32, and outputs the data to the image processing circuit 36 and the control circuit 40. The signal processing circuit 33 has, for example, a B mode processing circuit (or a Bc mode processing circuit), a Doppler mode processing circuit, a color Doppler mode processing circuit, and the like, which are not shown. The B-mode processing circuit visualizes the amplitude information of the received signal and generates beam data based on the B-mode signal. The Doppler mode processing circuit extracts the Doppler shift frequency component from the received signal and further performs FFT (Fast Fourier Transform) processing or the like to generate beam data of the Doppler signal of blood flow information. The color Doppler mode processing circuit visualizes blood flow information based on the received signal and generates beam data based on the color Doppler mode signal.

The memory 34 is transferred to and set in the transmission circuit 31, the reception circuit 32, and the signal processing circuit 33 based on information such as the various ultrasonic scan modes described above, the connected ultrasonic probe 2, and the number of simultaneous receptions in parallel. Stores control parameters. Examples of the control parameters include frame information, vector information, beam information, transmission element position, transmission delay, transmission aperture, reception element position, reception delay, reception aperture, header information, digital filter coefficient, and the like.

The transmission / reception control circuit 35 controls the transmission circuit 31, the reception circuit 32, and the signal processing circuit 33 described above based on the instructions from the control circuit 40. The transmission / reception control circuit 35 has a pulse repetition frequency, transmission / reception position information, transmission opening, and transmission stored in the memory 34 according to the number of beams, the number of frames, the frame rate, the depth information, and the like, which are instructions from the control circuit 40. The delay and the like are transmitted to the transmission circuit 31. Further, the transmission / reception control circuit 35 transmits reception aperture information, reception delay, and the like to the reception circuit 32. Further, the digital filter processing conditions have a function of transmitting to the signal processing circuit 33. On the other hand, the beam data input from the signal processing circuit 33 is transferred to the image processing circuit 36.

FIG. 2 is a functional block diagram functionally showing the overall configuration of the transmission / reception control circuit 35 according to the embodiment. The transmission / reception control circuit 35 includes a host interface 351, a data acquisition interface 352, a memory interface 353, a sequencer 354, a signal processing circuit interface 355, a reception circuit interface 356, and a transmission circuit interface 357.

The host interface 351 is in charge of communication between the transmission / reception control circuit 35 and the control circuit 40. That is, it has a role as a gate when exchanging signals between the two. Therefore, it is determined whether or not unintentional access is performed to the control circuit 40 from within the transmission / reception control circuit 35. The determination process in the host interface 351 will be described later.

The data acquisition interface 352 receives beam data from the signal processing circuit 33. In FIG. 2, the solid arrow extending from the lower side with respect to the data acquisition interface 352 indicates the beam data transferred from the signal processing circuit 33. The received beam data is transferred to the image processing circuit 36 via the host interface 351 and the control circuit 40.

If the size of the received beam data does not match the predetermined data size, it is determined whether or not the data acquisition interface 352 is an unintentional access. The determination process in the data acquisition interface 352 will be described later.

The memory interface 353 has a function of storing the control parameters transmitted from the control circuit 40 in the memory 34. Further, the sequencer 354 requests control parameters to the memory interface 353 based on, for example, the repetition frequency. The memory interface 353 reads out control parameters for controlling the transmission circuit 31, the reception circuit 32, and the signal processing circuit 33 from the memory 34 in response to a request from the sequencer 354, and reads the control parameters from the memory 34, and the transmission circuit 31, the reception circuit 32, and the signal processing circuit. Transfer to 33.

The signal processing circuit interface 355 is in charge of communication with the signal processing circuit 33. The receiving circuit interface 356 is in charge of communication with the receiving circuit 32. The transmission circuit interface 357 is in charge of communication with the transmission circuit 31.

The host interface 351, the data acquisition interface 352, the memory interface 353, the sequencer 354, the signal processing circuit interface 355, the reception circuit interface 356, and the transmission circuit interface 357, which are shown in FIG. 2, are used. It corresponds to "each part" in the transmission / reception control circuit 35.

The image processing circuit 36 generates a two-dimensional or three-dimensional ultrasonic image regarding the scan region based on the beam data supplied from the signal processing circuit 33. For example, the image processing circuit 36 generates volume data related to the scan region from the supplied beam data. Then, from the generated volume data, two-dimensional ultrasonic image data is generated by MPR processing (multi-section reconstruction method) and three-dimensional ultrasonic image data is generated by volume rendering processing. The image processing circuit 36 outputs the generated two-dimensional or three-dimensional ultrasonic image to the display 37. The ultrasonic image includes, for example, a B mode image, a Doppler mode image, a color Doppler mode image, an M mode image, and the like.

The display 37 displays various images such as an ultrasonic image generated by the image processing circuit 36 and an operation screen (for example, a GUI (Graphical User Interface) for receiving various instructions from the user) under the control of the control circuit 40. In addition, when an unintentional access occurs, it is possible to display notification information or the like informing the fact. As the display 37, for example, a liquid crystal display, an organic EL (Electroluminescence) display, or the like can be used.

The input circuit 38 accepts various input operations by the user, such as image display, image switching, mode designation, and various settings. As the input circuit 38, for example, a GUI or an input device such as a touch panel displayed on a button, a keyboard, a trackball, a display 37, or the like can be used.

In the embodiment of the present invention, as shown in FIG. 1, the display 37 and the input circuit 38 are described as one component of the ultrasonic diagnostic imaging apparatus 1, but the configuration is limited to such a configuration. No. For example, the display 37 may be configured separately from the ultrasonic diagnostic imaging apparatus 1 instead of being a component of the ultrasonic diagnostic imaging apparatus 1.

The storage circuit 39 is composed of, for example, a semiconductor or a magnetic disk, and stores programs and data executed by the control circuit 40, ultrasonic images generated by the image processing circuit 36, and the like.

The control circuit 40 comprehensively controls each part of the ultrasonic diagnostic imaging apparatus 1. The control circuit 40 controls the transmission / reception control circuit 35 by exchanging data with the transmission / reception control circuit 35. Further, the control circuit 40 causes the display 37 to display the ultrasonic image generated by the image processing circuit 36.

Further, although not shown in FIG. 1, the apparatus main body 3 may include a communication control circuit for controlling transmission / reception of signals with other devices (not shown). The communication control circuit plays a role of connecting the ultrasonic image diagnostic device 1 to, for example, a medical image diagnostic device (modality), a server device, a medical image processing device, etc., which are connected to each other in a communication network (not shown). There is. The standard for information and medical images exchanged with other devices via the communication control circuit and the communication network may be any standard such as DICOM (Digital Imaging and Communication in Medicine). In addition, when connecting to a communication network or the like, it does not matter whether it is wired or wireless.

FIG. 3 is an explanatory diagram showing the structure of data transmitted and received in the ultrasonic diagnostic imaging apparatus 1 according to the embodiment. As shown in FIG. 3, the data header is provided with four areas, "ACC Code", "User Defined", "Source ID", and "Data Count". Further, next to these headers, an area of "Destination Code (Address)" is provided. In this area, the physical address of the other party to which the data is transmitted, that is, the destination is stored. After that, it becomes the main body of data such as control parameter data and beam data.

By the way, among the headers, "User Defined" is an area where the data structure can be changed, for example, which can be arbitrarily defined by a developer or the like. Further, in the area of "Data Count", information indicating the size of the data is stored.

The "ACC Code" is an area in which a code indicating a predetermined "Access Pattern (hereinafter, appropriately referred to as" access pattern ")" for each part constituting the transmission / reception control circuit 35 is stored. The "access pattern" is a role set for each part of the transmission / reception control circuit 35. FIG. 4 is an explanatory diagram showing the relationship between the access pattern and the code indicating the access pattern.

Here, five patterns are set as access patterns. A code indicating the access pattern is assigned to each access pattern. For example, the code indicating the access pattern "Read Response" is "0x3". Further, for example, the access pattern "DMA Write" is indicated by the code "0xF". The details of the access pattern will be described later.

The “Source ID (hereinafter, appropriately referred to as“ source ID ”)” indicates a unique ID assigned and assigned to each part in the transmission / reception control circuit 35. FIG. 5 is an explanatory diagram showing the relationship between the source ID assigned to each part constituting the transmission / reception control circuit 35 in the embodiment, the access pattern, and the “Access Data Size” (hereinafter, appropriately referred to as “access data size”). Is. In addition, here, the control circuit 40 is also shown in the explanatory diagram.

In the embodiment of the present invention, the host interface 351 and the data acquisition interface 352, the memory interface 353, the sequencer 354, the signal processing circuit interface 355, the receiving circuit interface 356, and the transmitting circuit interface 357 are respectively. Source IDs are assigned from "1" to "7". Therefore, for example, in the data transmitted from the receiving circuit interface 356, "6" is stored in the area of the source ID of the header.

Further, as will be described later, when saving the log, the source ID is saved as one item of the log. By assigning a source ID to each part of the transmission / reception control circuit 35 in this way, it is possible to save as a log from which data is transmitted.

In the explanatory diagram shown in FIG. 5, in addition to the source ID, items of the access pattern and the access data size are also provided. The "access data size" defines the size of data received by each part of the transmission / reception control circuit 35, and is predetermined.

Regarding the "access pattern", for example, the host interface 351 is given the role of "Read Response". Further, for example, the sequencer 354 is given the role of "DMA Read Master".

Since the control circuit 40 controls the transmission / reception control circuit 35 and receives data from the transmission / reception control circuit 35, it is set as "Write Master" and is set as "Read Master".

On the other hand, regarding the data size accepted in each unit, for example, since the "data collection interface 352" is set to "Word Write Only", only data having a 32-bit data size is accepted. Further, since the "transmission circuit interface 357" is set to "Qword Write Only", only data having a 64-bit data size is accepted.

On the other hand, the memory interface 353 needs to accept a large amount of data due to its role. Therefore, the "access data size" is set to "Qword or Burst Word Write".

As described above, the role and the data size that can be accepted are preset for each part of the transmission / reception control circuit 35. Therefore, when the transmission / reception control circuit 35 receives data in each unit, it determines whether or not the roles and data sizes that match these settings are satisfied. If these conditions are not satisfied, it is determined that the access is unintentional.

Here, for example, the determination function in the transmission / reception control circuit 35 can be realized by causing the processor to execute a program stored in a predetermined memory, a storage circuit 39, or the like, for example, a warning display program. be. Here, the term "processor" as used herein refers to, for example, a dedicated or general-purpose CPU (Central Processing Unit) arithmetic circuit (circular circuit), or an integrated circuit for a specific application (Application Specific Integrated Circuit), a logic device. (For example, a simple programmable logic device (Single Programmable Logic Device: SPLD), a composite programmable logic device (Complex Programmable Logic Device: CPLD), and a field programmable gate array (field Programgable Gate Array: circuit, etc.)).

The processor realizes the function by reading and executing a program stored in the storage circuit 39 or directly embedded in the circuit of the processor, for example. The recording circuit for storing the program may be individually provided for each processor, or may, for example, store a program corresponding to the function performed by the signal processing circuit 33 in FIG. 1. Further, the configuration of the storage circuit 39 shown in FIG. 1 may be adopted. As described above, a storage device such as a general RAM (Random Access Memory) such as a semiconductor or a magnetic disk or an HDD (Hard Disk Drive) is applied to the configuration of the storage circuit.

[motion]
Next, the operation of the determination process in the transmission / reception control circuit 35 will be described in two parts below with reference to FIGS. 6 to 8. The first is to deal with cases where processing is performed in excess of the roles and data sizes set for each part of the transmission / reception control circuit 35. The second is a response when the frame size of the beam data transmitted from the signal processing circuit 33 does not match the predetermined frame size.

[Operation 1]
First, the first operation will be described. FIG. 6 is a sequence diagram showing a flow in which the transmission / reception control circuit 35 determines unintentional access in the embodiment. Further, FIG. 7 is an explanatory diagram showing the contents of the log saved when the transmission / reception control circuit 35 determines that the access is unintentional in the embodiment.

In the sequence diagram shown in FIG. 6, among the transmission / reception control circuits 35, the “reception circuit interface 356”, the “data acquisition interface 352”, and the “host interface 351” are shown from the left. The "control circuit 40" to which data is transmitted from the transmission / reception control circuit 35 is shown on the far right. In each sequence diagram, the reference numerals are omitted.

First, a case corresponding to "intentional access" will be described as an example. As shown in FIG. 5, the access pattern of the “data acquisition interface 352” is “DMA Write Master”. On the other hand, in FIG. 6, the access pattern indicated by the arrow extending from the “data acquisition interface 352” toward the “control circuit 40” is “DMA Write”. Therefore, it can be said that the data transfer process from the "data acquisition interface 352" to the "control circuit 40" is an appropriate process.

Looking at the "receiver circuit interface 356", in FIG. 5, the access pattern of the "receiver circuit interface 356" is "Read Response". On the other hand, the access pattern shown by the arrow extending from the "receiver circuit interface 356" to the "control circuit 40" in FIG. 6 is "Read Response". Therefore, it can be said that the data transfer process from the "receiver circuit interface 356" to the "control circuit 40" is an appropriate process.

Therefore, in the sequence diagram shown in FIG. 6, the process from each part indicated by the two arrows from the top toward the control circuit 40 is an intentional access. In other words, the host interface 351 also determines whether or not the data transmitted from each part (data acquisition interface 352, receiving circuit interface 356) corresponds to intentional access, and all of them are "intentional access". It was determined that it was.

A specific flow of determination as to whether or not the host interface 351 corresponds to an intentional access will be described by taking as an example the processing of "DMA Write" performed by the receiving circuit interface 356.

That is, looking at the third arrow from the top in the sequence diagram of FIG. 6, the access pattern with "DMA Write" is shown for the arrow extending from the receiving circuit interface 356.

Therefore, when the transfer process is performed from the reception circuit interface 356 to the control circuit 40 with the access pattern of "DMA Write", the access from the reception circuit interface 356 to the control circuit 40 is intentional in the host interface 351. It is determined whether or not there is (ST1).

Here, the access pattern of the receiving circuit interface 356 is "Read Response", not "DMA Write", as described above. Therefore, when the host interface 351 makes a determination on the data transmitted from the receiving circuit interface 356, in this case, it is determined that the access is unintentional (NO in ST1).

As described above, "DMA Write" from the data acquisition interface 352 to the control circuit 40 and "DMA Write" from the reception circuit interface 356 to the control circuit 40 as shown by the upper two arrows in the sequence diagram of FIG. In the case of "Read Response", the host interface 351 is regarded as an intentional access (YES in ST1), and the data is transferred to the control circuit 40 as it is.

If it is determined that the host interface 351 is an unintentional access, the transfer of data (packet) from the receiving circuit interface 356 to the control circuit 40 is stopped (ST2). This is because if the transfer process to the control circuit 40 is continued as it is, a situation such as a system lock or a blue screen will occur.

Then, the host interface 351 acquires and saves the log (ST3). The log is a log indicating that the access is unintentional. Looking at the contents of the log shown in FIG. 7, “6”, which is an ID indicating the receiving circuit interface 356, is shown as the “source ID”. Further, since the "DMA Write" is accessed from the receiving circuit interface 356 toward the control circuit 40, the "Distionation Code" is the physical address of the control circuit 40. Since the access pattern transmitted by the receiving circuit interface 356 is "DMA Write", the access code is "0xF". As for the "access data size", the size is not shown because the specific size is not mentioned here.

The host interface 351 acquires and stores the log. The storage destination of the log may be in the host interface 351 or may be the memory 34 or the storage circuit 39.

By saving the log when the host interface 351 is determined to be unintentional access in this way, it is possible to secure information that can be referred to when performing recovery processing. ..

FIG. 8 is a sequence diagram showing a flow of performing recovery processing when the transmission / reception control circuit 35 determines that the access is unintentional in the embodiment. First, the host interface 351 determines whether or not the recovery process can be performed by itself (ST4). As a result, when the restoration process cannot be performed in the ultrasonic diagnostic imaging apparatus 1 (NO in ST4), information indicating that an unintentional access has occurred is generated and transmitted to the control circuit 40 (ST5). ..

In the control circuit 40 that has acquired the notification information that an unintentional access has occurred, for example, the information is displayed on the display 37. The method of notification is not particularly limited. For example, if the person performing the restoration of the ultrasonic diagnostic imaging apparatus 1 (for example, a serviceman) is notified, it is sufficient if the display 37 is displayed and the device appeals to the five senses of the person performing the restoration. Further, the user who uses the ultrasonic diagnostic imaging apparatus 1 may be notified once, and the person who performs the restoration may be notified via the user.

As a result of the determination by the host interface 351, if recovery is possible in the ultrasonic diagnostic imaging apparatus 1 (YES in ST4), the recovery process is executed with reference to the saved log (ST6). Specifically, for example, the control circuit 40 accesses the host interface 351 that stores the log, grasps the contents of the log, and sets parameters and the like again with reference to the log.

Then, the host interface 351 determines whether or not the recovery is completed while the recovery process is being executed, and if it is not completed (NO in ST7), the recovery process is continuously executed. On the other hand, when the recovery process is completed (YES in ST7), the system can be recovered from unintentional access.

Up to this point, the flow of determining whether or not the host interface 351 corresponds to unintentional access has been described based on the suitability of the access pattern predetermined for each part of the transmission / reception control circuit 35. However, the determination as to whether or not it corresponds to unintentional access by the transmission / reception control circuit 35 may be performed based on, for example, the suitability of the access data size.

For example, each part of the transmission / reception control circuit 35 monitors the size of data transmitted from each other part. Here, for example, it is assumed that "Dword Write" is accessed from the memory interface 353 to the transmission circuit interface 357. However, referring to FIG. 5, for the transmission circuit interface 357, the access data size is set to "Qword Write Only".

Therefore, in the transmission circuit interface 357, it is determined that the access from the memory interface 353 is an unintentional access. Also, the transmitted data will be discarded. Then, the transmission circuit interface 357 acquires and stores the log as shown in FIG. 7.

The log stored in the transmission circuit interface 357 may be subsequently transmitted to the host interface 351 and stored in the host interface 351. By not only saving the log in each part that received the data in this way but also saving it in the host interface 351 in an overlapping manner, the control circuit 40 is first saved in the host interface 351 when performing the recovery process. It is enough to refer to the existing log, and the recovery process can be performed quickly.

In the log to be saved, the "source ID" is "3" and the "Distination Code" is the physical address of the transmission circuit interface 357. Since the access pattern transmitted by the memory interface 353 is "Dword Write", the access code is "0x1". Further, the "access data size" is "Dword".

Even in this case, it is possible to recover the system from unintentional access by executing the recovery process, as described with reference to FIG.

[Operation 2]
Next, the second operation will be described. The premise for explaining the second operation is as follows.

That is, as described above, the data acquisition interface 352 receives the beam data from the signal processing circuit 33 and transfers it to the image processing circuit 36. In the signal processing circuit 33, beam data is generated for each type such as B mode and Doppler mode. Further, in the image processing circuit 36, a memory area that can be stored for each type is provided. Therefore, the data acquisition interface 352 transfers the beam data to each memory area of the corresponding image processing circuit 36 according to the type of beam data.

On the other hand, the control circuit 40 sets the frame size and the number of frames for each beam data that can be accepted in the memory area of the image processing circuit 36 for the data acquisition interface 352. Therefore, the data acquisition interface 352 transfers the beam data from the signal processing circuit 33 to the image processing circuit 36 according to the set frame size.

When the beam data is transferred according to the frame size in the memory area in the image processing circuit 36, the predetermined frame size and the frame size of the transferred beam data match. Therefore, when the beam data of a predetermined number of frames is stored, the beam data is moved to the first memory area again and the transfer process is continued.

However, if the frame size of the beam data actually transferred here is different from the preset frame size, the frame size does not fit in the preset memory area of the image processing circuit 36. Beam data that does not fit in the memory area is transferred to the memory area used by the CPU in the control circuit 40. If the beam data is transferred to the memory area used by the CPU, it affects the arithmetic data of the CPU, which may cause a phenomenon such as a system lock or a blue screen.

Therefore, the corresponding process for preventing such a phenomenon from occurring is the second operation described below. FIG. 9 is a sequence diagram showing a flow in which the transmission / reception control circuit 35 determines unintentional access in response to reception of beam data in the embodiment.

As described above, the control circuit 40 sets the frame size and the number of frames for each type of beam data for the data acquisition interface 352. The data acquisition interface 352 receives beam data from the signal processing circuit 33 according to the set frame size and number of frames, and transfers the beam data to the set memory area of the image processing circuit 36.

Therefore, first, when the data acquisition interface 352 receives the beam data from the signal processing circuit 33, the data acquisition interface 352 grasps the frame size of the received beam data (ST11). Since the frame size set differs depending on the type of beam data, the type of received beam data is also grasped at the same time. Then, the frame size of the beam data transmitted from the grasped signal processing circuit 33 and the frame size set by the control circuit 40 are compared (ST12).

When the data acquisition interface 352 determines as a result of comparison that the frame sizes of the two match (YES in ST13), the data is transferred to the memory area of the image processing circuit 36 (ST14).

On the other hand, as a result of comparison by the data acquisition interface 352, when it is determined that the frame size of the beam data transmitted from the signal processing circuit 33 and the frame size set by the control circuit 40 do not match (NO in ST13). , Judged as unintentional access. Then, the transfer processing of the beam data to the memory area of the image processing circuit 36 is stopped (ST15). Then, the log is acquired and saved (ST16).

FIG. 10 is an explanatory diagram showing the contents of a log saved when the transmission / reception control circuit 35 determines that the access is unintentional due to the reception of beam data in the embodiment. The items saved as a log are basically the same as the log saved when it is determined that the access is unintentional from the viewpoint of the above-mentioned access pattern and access data size (see FIG. 7).

That is, the "source ID" is "2" representing the data acquisition interface 352, and the "Distention Code" is the physical address of the image processing circuit 36. Further, the "access pattern" is "0xF" representing "DMA Write" because the data acquisition interface 352 is a process of transferring beam data to the image processing circuit 36. The description of "access data size" will be omitted here.

On the other hand, as an item peculiar to the log saved when the frame sizes do not match, the items of "beam data" and "frame" can be mentioned.

The item of "beam data" indicates "type of beam data". According to the type of beam data from the signal processing circuit 33 when it is determined to be unintentional access, for example, "B", "C", "M", "Mc", "CW" for each mode. , "PW", or "Physio" is stored.

The “frame” indicates the number of frames since the data acquisition interface 352 starts transferring beam data. For example, in the log shown in FIG. 10, "B" is shown in the "beam data" column, and "3" is shown in the "frame" column.

The data acquisition interface 352 stores the log and notifies the control circuit 40 that an unintentional access has occurred (ST17 in FIG. 11). Here, FIG. 11 is a sequence diagram showing a flow until the beam data is transferred to the image processing circuit 36 again when the transmission / reception control circuit 35 determines that the access is unintentional in the embodiment. ..

Here, the data acquisition interface 352 notifies the control circuit 40 that an unintentional access has occurred, but the control circuit 40 does not necessarily have to display the notification on the display 37. .. Although it is necessary to notify the control circuit 40, it is possible to eliminate the unintentional access state by resetting the frame size as described below without notifying the user by displaying it on the display 37. be.

In the control circuit 40 that has received the notification, the frame size and the like are set again with reference to the saved log. On the other hand, in the data acquisition interface 352, the reset frame size and the frame size of the beam data transmitted from the grasped signal processing circuit 33 are compared again. As a result, if the two frame sizes do not match (NO in ST18), the frame size and the like are set again.

On the other hand, when the frame sizes of the two match (YES in ST18), the stop of transferring the beam data to the memory area of the image processing circuit 36 is released (ST19). Then, the reception of the beam data from the signal processing circuit 33 is received again, and the transfer processing to the memory area of the image processing circuit 36 is executed (ST20).

By executing the processing as described above, when an unintentional access occurs in the ultrasonic diagnostic imaging device, the ultrasonic diagnostic imaging device can be restored without stopping the device as much as possible. Can be provided.

In particular, by determining whether the transmission / reception control circuit is unintentional access from various points of view, before a serious situation such as a system lock or a blue screen that causes the ultrasonic diagnostic imaging device to stop occurs. Processing can be stopped. Therefore, it is avoided that the user also needs to perform the process of restarting the ultrasonic diagnostic imaging apparatus, and the processing and the treatment using the ultrasonic diagnostic imaging apparatus can be continued.

If it is determined that the access is unintentional, the status is acquired and saved as a log. Therefore, since the log can be referred to when the recovery process is performed, the recovery process can be executed more quickly and reliably.

The restoration process is performed by the ultrasonic diagnostic imaging apparatus itself as much as possible. Therefore, since it is sufficient to contact the serviceman or the like only when the recovery process cannot be performed by oneself, the recovery process can be executed more quickly.

Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and variations thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 Ultrasonic diagnostic imaging device 2 Ultrasonic probe 3 Device main unit 31 Transmission circuit 32 Reception circuit 33 Signal processing circuit 34 Memory 35 Transmission / reception control circuit 351 Host interface 352 Data acquisition interface 353 Memory interface 354 Sequencer 355 Signal processing circuit interface 356 Reception circuit interface 357 Transmission circuit Interface 36 Image processing circuit 37 Display 38 Input circuit 39 Storage circuit 40 Control circuit

Claims (10)

A transmission / reception control circuit that controls the transmission of ultrasonic waves from the ultrasonic probe to the site to be diagnosed and the reception of reflected signals,
A control circuit that controls the transmission / reception control circuit and displays an ultrasonic image generated based on the reflected signal on a display.
The transmission / reception control circuit
Access to the control circuit, or when the access between the components constituting the reception control circuit is determined to be a non-intentional access, have row control to stop the access,
When the access does not match the predetermined access pattern from each part, it is determined that the access is unintentional.
An ultrasonic diagnostic imaging device characterized by. A transmission / reception control circuit that controls the transmission of ultrasonic waves from the ultrasonic probe to the site to be diagnosed and the reception of reflected signals,
A control circuit that controls the transmission / reception control circuit and displays an ultrasonic image generated based on the reflected signal on a display.
The transmission / reception control circuit
When it is determined that the access to the control circuit or the access between the parts constituting the transmission / reception control circuit is an unintentional access, the control to stop the access is performed.
When the data size in the access does not match the predetermined data size acceptable in each part, it is determined that the access is unintentional .
Ultrasound system characterized. A transmission / reception control circuit that controls the transmission of ultrasonic waves from the ultrasonic probe to the site to be diagnosed and the reception of reflected signals,
A control circuit that controls the transmission / reception control circuit and displays an ultrasonic image generated based on the reflected signal on a display.
The transmission / reception control circuit
When it is determined that the access to the control circuit or the access between the parts constituting the transmission / reception control circuit is an unintentional access, the control for stopping the access is performed.
When the frame size of the beam data received from the signal processing circuit does not match the predetermined frame size, it is determined that the access is unintentional .
Ultrasound system characterized. The invention according to any one of claims 1 to 3 , wherein when the transmission / reception control circuit determines that the access is unintentional, the contents of the received data are acquired and stored as a log. Ultrasound diagnostic imaging equipment. A transmission / reception control circuit that controls the transmission of ultrasonic waves from the ultrasonic probe to the site to be diagnosed and the reception of reflected signals,
A control circuit that controls the transmission / reception control circuit and displays an ultrasonic image generated based on the reflected signal on a display.
When the transmission / reception control circuit determines that the access to the control circuit or the access between the parts constituting the transmission / reception control circuit is unintentional access, the transmission / reception control circuit controls to stop the access.
When the transmission / reception control circuit determines that the access is unintentional, the contents of the received data are acquired and saved as a log.
An ultrasonic diagnostic imaging device characterized by. The fourth or fifth aspect of the present invention, wherein a source ID is assigned to each part constituting the transmission / reception control circuit, and the log includes the source ID, an access pattern, and a data size. Ultrasound diagnostic imaging equipment. The transmission and reception control circuit acquires the log with a possible frame size of the beam data does not match the frame size defined Me pre When saving, further, also stored as a log of the kind previously beam data, information on the number of frames The ultrasonic diagnostic imaging apparatus according to claim 6. When the transmission / reception control circuit saves the log and recovery from the unintentional access state by the transmission / reception control circuit is impossible, the transmission / reception control circuit is not related to the control circuit. The ultrasonic diagnostic imaging apparatus according to any one of claims 4 to 6, wherein the ultrasonic diagnostic imaging apparatus is characterized by notifying that an intentional access has occurred. The transmission and reception control circuit, when the frame size of the beam data to store the log with a not match the frame size defined Me pre is that the non-intentional access to the control circuit has occurred The ultrasonic diagnostic imaging apparatus according to any one of claims 4 to 7, wherein the ultrasonic diagnostic imaging apparatus is to be notified. The ultrasonic diagnostic imaging apparatus according to claim 9, wherein the control circuit receives notification from the transmission / reception control circuit that the unintentional access has occurred, and sets the frame size again. ..

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