Track ball cursor action control method and apparatus

A motion control, trackball technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., can solve the problem of misoperation, difficult to accurately lock the smallest pixel point, etc., to improve the movement accuracy, The effect of suppressing erroneous movement and taking into account the requirements of sensitivity and accuracy

Active Publication Date: 2009-05-20
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

It is sometimes difficult for human hands to control such precision. A slight jitter of the cursor will cause misoperation, and it is difficult to accurately lock the smallest pixel.

Method used

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  • Track ball cursor action control method and apparatus
  • Track ball cursor action control method and apparatus
  • Track ball cursor action control method and apparatus

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Embodiment Construction

[0028] The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

[0029] In most ultrasonic diagnostic equipment, the user interface on the display screen is distributed roughly as follows: figure 1 As shown, the image extracted from the ultrasonic echo information of the human body is located in the center of the display screen, and the user's operation menu and various information and parameters of the ultrasonic diagnostic equipment are located around the display screen. When doctors use ultrasound equipment to diagnose patients, they often need to accurately measure the size of the diseased tissue in the image, especially when stones and other symptoms appear in the diseased tissue. At this time, moving the cursor to measure the size of the stone requires high precision for the cursor. In addition, the switching of each mode in the diagnosis needs to be switched in the menu bar and information bar around ...

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Abstract

The invention discloses a method and a device for controlling the motion of a trackball cursor. The method comprises the following steps: A1, the rotating speed or the displacement within a fixed time interval of a trackball are detected in real time; and B1, a ruler between the rotating displacement of the trackball and the displacement of the cursor on a display screen is arranged in real time according to the variation of the rotating speed or the variation of the displacement within the fixed time interval of the trackball, and the ruler becomes larger when the rotating speed or the displacement within the fixed time interval is increased. The method and the device for controlling the motion of the trackball cursor simultaneously consider the sensitivity requirement and the precision requirement and effectively inhibit error movement of the trackball.

Description

【Technical field】 [0001] The invention relates to a control method and device for cursor action, in particular to a control method and device for trackball type cursor action. 【Background technique】 [0002] Many instruments are designed to control the movement of the cursor on the display screen through the rotation of the trackball. For example, the trackball is commonly used in medical ultrasonic diagnostic equipment to control the movement of the cursor on the display screen. Most of the ultrasonic diagnostic instruments currently on the market The operation of the device is completed by the cooperation of the buttons and the trackball, and users are generally accustomed to using the trackball to control the cursor on the display screen of this type of device. During the operation of the ultrasonic diagnostic instrument, two applications are often faced at the same time: high-precision measurement with the cursor and large-scale transfer of the cursor on the display scre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/038G06F3/0354
Inventor 胡锐袁满
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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