KR200375211Y1 - Control Circuit for Operating Pannel of an Ultrasonograph - Google Patents

Abstract

The present invention relates to a control circuit of an operation panel of an ultrasonic diagnostic apparatus, and more particularly, an alphanumeric input key, a mode selection key, an encoder, and a trackball attached to a host system of the ultrasonic diagnostic apparatus. (Track Ball), and the control circuit of the operation panel of the ultrasonic diagnostic apparatus having a function of transmitting the input signal of the TGC control terminal to the host system through the USB interface, and driving the LED display according to the data received from the host system. .

Description

     Control Circuit for Operating Panel of Ultrasonic Diagnostic Device {Control Circuit for Operating Pannel of an Ultrasonograph}

The present invention relates to a control circuit of an operation panel of an ultrasonic diagnostic apparatus, and more particularly, an alphanumeric input key, a mode selection key, an encoder, and a trackball attached to a host system of the ultrasonic diagnostic apparatus. (Track Ball), and the control circuit of the operation panel of the ultrasonic diagnostic apparatus having a function of transmitting the input signal of the TGC control terminal to the host system through the USB interface, and driving the LED display according to the data received from the host system. .

In general, a host system of a medical device such as an ultrasound diagnostic device includes an alphanumeric input key for inputting commands and information to the system, a trackball as an auxiliary input tool of the host system, and a mode for switching a system. Operation panel equipped with various operation means such as mode selection key, encoder for adjusting output signal or screen state of host system, TGC control terminal (time gain control, signal control terminal of host system using time gain control) This is installed.

However, in order to efficiently transmit signals input from various types of adjusting means to the host system, a series of control circuits for systematically and collectively converging the signals generated from each adjusting means are required. Conventionally, most of the control circuits used in such an operation panel are analog signal processing elements, which are highly influenced by the characteristics of the place where the host system is used, which reduces the durability of the circuit and reduces the reliability and accuracy of operation. There was a problem.

In addition, although a control circuit using a conventional microcontroller has been used, input signals from a variety of operation means of at least 50 to 150 can not be efficiently processed according to the characteristics and types of each input signal. There is an urgent need for a solution.

The present invention was devised to solve the above-mentioned conventional problems, and in particular, according to the characteristics and types of input signals from various operation means provided in an operation panel operated by a user in an ultrasonic diagnostic apparatus. The present invention has been devised for the purpose of providing a control circuit for an operation panel that efficiently inputs to a host system, but for providing an operation panel control circuit that uses a USB interface as a communication means with the host system.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

First, an example of an operation panel including an alphanumeric input key for operating a host system of an ultrasonic medical device, a mode selection key, an encoder terminal used for adjusting a screen or a signal, a track ball, etc. 1 is shown.

1 illustrates an operation panel used in an ultrasound medical apparatus, and the operation panel P is attached to the host system Q to perform an operation such as command input, mode selection, signal variation, output control, and the like. It is provided with a control means required for the panel, as shown in the embodiment of the figure, the alphanumeric keyboard (P1), the track ball (P2) connected to a peripheral device such as a computer and performs a pointing operation, the mode of the device A mode key (P3) for selecting the (Mode) setting, an encoder terminal (P4) for adjusting the output signal or screen state of the host system, and a TGC control terminal (Time Gain Control, Signal control terminal (P5) of the host system using time gain control, and a plurality of LEDs (P6) attached to the inner side of the back of the mode key (P3) and lit to identify the pressed state of the mode key (P3); , Host system (Q) A USB port P7 in which a USB port is used as a means of communication with the terminal is disposed on the surface of the panel P. As shown in FIG.

The main functions of the mode key (P3) are the mode parameter of the host system (Q) of the ultrasonic diagnostic apparatus, the function selection key, the function application key, the report output key, the test key, the automatic / manual switching key, the pause key, the left / right Select key, setting key, scan area control key, cursor control key, zoom control key, measurement standard control key, pattern selection key, switch to sentence input mode, clear key, power key, etc. The control circuit of the embodiment is designed to control up to 48 of these mode keys.

In addition, the main function of the encoder terminal (P4) can be given a function for adjusting the width, depth, angle, depth, etc. of the screen of the host system (Q), the control circuit of the present invention embodiment is such an encoder terminal It is designed to control up to 13 (P4).

The configuration of the present invention control circuit for controlling the input signal transmitted from each operation means of the operation panel P as described above and performing communication with the host system Q will be described in detail with reference to the block diagram of FIG. 2. .

The central control unit 10 is a main controller that integrates and controls the control circuit of the present invention, which is a letter / number signal transmitted from the keyboard signal input unit 20 and a trackball transmitted from the trackball signal sensing unit 30. A pointing signal and a mode selection signal, an encoder signal, and a TGC adjustment signal transmitted from the auxiliary control unit 40 are input, and the input signal is processed by a built-in control program, and then converted into a USB signal, which is then converted into a USB interface. Output to the unit 70. The signal output to the USB interface unit 70 is transferred to the host system Q, and the host system Q controls the host system Q by performing signal processing according to an input signal from the central controller 10. do.

The central control unit 10 is a microprocessor unit (MPU) is used, it is preferable that a built-in storage space and a control program for driving the microprocessor is stored in the storage space, oscillation element such as a crystal oscillator (Oscillator) An OSC terminal receives the operating clock of the microprocessor through the power supply terminal, a power input terminal and a ground terminal supplied with the operating power, and a terminal for resetting the circuit. In the embodiment of the present invention as a microprocessor used in the central control unit 10, a one-chip microchip that has a built-in RAM and PROM type of storage, and outputs data signals for five USB ports in addition to the general-purpose input and output ports CY7C66113 from CYPRESS Co., Ltd. is used.

The keyboard signal input unit 20 is a conventional keyboard signal generation circuit that scans an alphanumeric keyboard P1 to generate an alphanumeric signal, and outputs the generated keyboard signal to the central controller 10.

The track ball signal sensing unit 30 senses the track ball P2, converts the track ball pointing position as a pulse signal, and outputs it to the central controller 10.

The auxiliary control unit 40 is a bridge controller connected to the central control unit 10 to control an interface between the central control unit 10 and each of the operation keys. The selection signal, the encoder signal transmitted from the encoder control unit 50, and the TGC signal transmitted from the TGC / LED control unit 60 are input, are processed by the built-in control program, and then converted into a USB signal, which is then converted into a center. Output to the control unit 10. In addition, the TGC / LED controller 60 transmits a signal to control the LEDs P6 indicating the lighting state of each mode key according to the selected mode key selection signal.

Like the central control unit 10, the auxiliary control unit 40 is a microprocessor unit (MPU) is used, it is preferable that a control program for storing a built-in storage space and drive the microprocessor. In the present embodiment, the microprocessor used in the mode key control unit 20 is an 8051 microprocessor core manufactured by the US Intel Corporation, has a RAM-type reservoir, and outputs a data signal for one USB port together with a general-purpose input / output port. The company adopted AN2131Q from CYPRESS of the United States, a one-chip microprocessor.

The mode key signal input unit 41 scans the mode key P2 to generate an ON / OFF signal of each mode key and outputs the signal to the auxiliary control unit 40.

The encoder controller 50 receives an encoder signal for adjusting an output signal or a screen state of the host system through the encoder signal input unit 51, processes the input signal by a built-in control program, and then processes the input signal into the auxiliary controller ( 40). The encoder control unit 50 is a microprocessor unit (MPU) is used as in the central control unit 10, and a built-in storage space to store a control program for driving the microprocessor in the storage space, In the present embodiment, MC68HRC908JL3 of MOTOROLA of USA, which is a one-chip microprocessor with a flash memory and a RAM-type storage device and a general-purpose input / output port and an analog-to-digital converter (ADC), is adopted.

The encoder signal input unit 51 transmits a signal generated according to the adjustment of the encoder P4 to the encoder controller 50.

The TGC / LED control unit 60 receives the TGC control signal transmitted from the TGC control signal input unit 61 and transmits the received signal to the auxiliary control unit 40 according to the timing signal of the auxiliary control unit 40. In addition, the TGC / LED panel control unit 60 receives a control signal of LEDs P6 that are turned on or off according to the state in which the mode key P3 is pressed, from the auxiliary control unit 40 to the LED display unit 62. To pass. The LED display 62 lights or turns off each LED P6 according to the control signal of the received LED.

The USB interface unit 70 is connected to the output terminal of the data signal for the USB port of the central control unit 10 to communicate with the central control unit 10 and the host system Q, and the conventional USB port P7 is Used.

In the embodiment of the present invention, the TGC / LED control unit 60 employs an Atmega8, which is an 8-bit microprocessor incorporating SRAM, EEPROM and A / D converter, and Atmega8 of the US ATMEGA Co., Ltd. TB 62702F was employed.

Hereinafter, the operation of the subject innovation control circuit configured as described above is described in detail with reference to the accompanying drawings. 3 is a flowchart of a control program of the control circuit of the present invention.

First, as shown in FIG. 3, when the operator of the operation panel supplies power to the control circuit of the present invention (step S 301), the central control unit 10, the auxiliary control unit 40, the encoder control unit 50, and the TGC The / LED control unit 60 is activated so that the control program stored in the memory storage space inside each microprocessor starts driving and the register value is initialized accordingly (step S302). Subsequently, the central control unit 10 searches the input port to determine whether there is an input of the keyboard signal from the keyboard signal input unit 20 (step S303). When the input of the keyboard signal is found, the input keyboard signal is read (step S 304), and it is converted into the USB data signal defined in the code table stored in the memory storage space (step S 305), and the USB interface unit 70 The converted USB data signal is output (step S306). The output USB data signal is recognized by the host system to recognize the signal.

Next, the central controller 10 searches the input port to determine whether the track ball pointing signal is input from the track ball signal sensing unit 30 (step S 307). When the input of the pointing signal of the trackball is found, the input pointing signal is read (step S308), and it is converted into the USB data signal defined in the code table stored in the memory storage space (step S309), and the USB interface unit ( 70, the converted USB data signal is output (step S310). The output USB data signal is determined by the host system to recognize the pointing position of the trackball.

Subsequently, if the signal input in step S 307 is not a pointing signal of the trackball, the central controller 10 recognizes the input signal as a mode key selection signal or an encoder control signal or a TGC control signal input from the auxiliary controller 40. (Step S 311), it is determined whether the input signal is output from the mode key signal input section 41 (Step S 312). If the signal is input from the mode key signal input unit 41, the signal is read (step S 313), and it is converted into a USB data signal defined in a code table stored in the memory storage space (step S 314), and the USB interface unit ( 70), the converted USB data signal is output (step S315). The output USB data signal is determined by the host system to recognize the operation state of the mode key.

In addition, the auxiliary control unit 40 generates an LED lighting control signal indicating the pressed state of the mode key P3 when the mode key signal of step S 313 is read (step S 316), and generates the generated LED lighting control. The signal is transmitted to the TGC / LED control unit 60 (step S 317), and the LED P6 attached to the inside of the rear side of the corresponding mode key P3 is turned on or off via the LED display unit 62 (step S317). 318).

Subsequently, if the signal input in step S 312 is not a mode key signal, the central controller 10 determines whether the input signal is a control signal of an encoder input through the encoder controller 50 (step S 319). If the encoder is an adjustment signal, the signal is read (step S 320), and it is converted into the USB data signal defined in the code table stored in the memory storage space (step S 321), and the USB data converted to the USB interface unit 70. A signal is output (step S 322). The output USB data signal is determined by the host system to recognize the variable state of the variable signal.

Next, if the signal input in step S 319 is not an encoder signal, the central controller 10 determines whether the input signal is a TGC control signal input through the TGC / LED panel controller 60 (step S 323). ). If it is a TGC adjustment signal, this signal is read (step S 324), and it is converted into the USB data signal defined in the code table stored in the memory storage space (step S 325), and the USB data signal switched to the USB interface unit 70. (Step S326). The output USB data signal is determined by the host system to control the TGC adjustment.

If the signal input in step S 323 is not a TGC control signal, the central control unit 10 recognizes it as another signal (step S 327), and processes it as defined in the code table stored in the memory storage space ( Step S 328). Then, when the operator of the operation panel cuts the power to the control circuit of the present invention (step S 329), the driving of the control program stored in the memory storage space in the central control unit 10 is stopped and the operation by the control circuit of the present invention is stopped. (Step S 330).

Effects of the present invention having the above-described configuration are provided by the central control unit, the auxiliary control unit, the encoder control unit interfaced by the auxiliary control unit, and the TGC / LED panel control unit, respectively, from various forms of adjustment means installed on the operation panel. The input signal can be distributed and processed to efficiently and accurately transmit the signal generated by the operation panel to the host system.

In addition, since only the digital elements are used, the durability of the circuit is increased and the reliability and accuracy of the operation are increased by minimizing the influence on the place characteristic of the host system.

1 is a view showing an example of an operation panel in which a control circuit of the present invention is installed;

2 is a block diagram of a control circuit of the present invention;

3 is a block diagram of another embodiment of a control circuit of the present invention;

4 is a flowchart of a control program of the control circuit of the present invention.

Explanation of symbols on the main parts of the drawings

10; A central control unit 20; Keyboard signal input

30; Trackball signal sensing unit

40; Auxiliary control unit 41; Mode key signal input

50; Encoder controller 51; Encoder Signal Input

60; TGC, LED controller 61; TGC control signal input

62; LED indicator 70; USB interface

P; Operation panel P1; Alphanumeric Keyboard

P2; Trackball P3; Mod key

P4; Encoder P5; TGC Control Terminal

P6; LED P7; USB interface

Q; Host system

Claims (2)

A keyboard signal input unit 20 for sensing a keyboard P1 to generate a keyboard signal, a trackball signal sensing unit 30 for sensing a trackball P2 and converting a track ball's pointing position as a pulse signal, and a mode key P3. ), The mode key signal input section 41 for generating the ON / OFF signal of each mode key, the encoder signal input section 51 for generating the encoder control signal of the encoder P4, and the encoder signal input section 51. In the operation panel P of the host system Q of the ultrasonic diagnostic apparatus which includes the encoder control part 50 to control, and the TGC signal input part 61 which produces the TGC control signal of the TGC control terminal P5, The keyboard signal input unit 20 receives the alphanumeric signal and the trackball pointing signal transmitted from the trackball signal sensing unit 30, processes the signal by a built-in control program, and converts the signal into a USB signal. A central controller 10 outputting the host system Q through the USB interface unit 70; And An auxiliary control unit 40 which receives a mode selection signal transmitted from the mode key signal input unit 41 and an encoder adjustment signal transmitted from the encoder control unit 50; And A TGC / LED control unit 60 which receives a TGC control signal transmitted from the TGC signal input unit 61 and transmits the TGC control signal to the auxiliary control unit 40; It is configured to include, The central control unit 10 receives a mode selection signal, an encoder control signal, and a TGC control signal input to the auxiliary control unit 40, processes the signal by a built-in control program, and then converts the signal into a USB signal. Control circuit of the operation panel of the ultrasonic diagnostic apparatus, characterized in that output to the host system (Q) through the interface unit (70). The method of claim 1, The TGC / LED controller 60 receives a control signal of the LEDs P6 that are turned on or off according to the pressed state of the mode key P3 from the auxiliary controller 40, and transfers the control signals to the LED display 62. The LED display unit 62 is a control circuit of the operation panel of the ultrasonic diagnostic apparatus, characterized in that for turning on or off each LED (P6) in accordance with the received control signal of the LED.