4 results about "Pointing stick" patented technology

The invention discloses a pointing stick analog signal sampling circuit and method, and the method comprises the steps: connecting a strain gauge signal resistor bridge to one end of a sampling capacitor, connecting a variable voltage unit to the other end of the capacitor, transmitting a signal to the capacitor in a charging manner after a preset time, disconnecting the strain gauge signal resistor bridge, and carrying out the sampling of a pointing stick analog signal. And then analog-to-digital conversion is further carried out on the signal on the sampling capacitor. In the most critical analog-to-digital conversion step of analog signal processing, the sensor is completely disconnected with the circuit, so that the interference of external interference sources such as a mobile phone and the like on the circuit through the sensor during analog-to-digital conversion is reduced. Besides, when the signal is transmitted to the sampling capacitor for conversion, the voltage of the specified variable voltage source can correct the resistance matching problem of the sensor in the strain gauge resistance bridge in a large range, so that the strain sensor can still work when the resistance value of the strain sensor exceeds 20% of the preset value.

1. Name of this design product: Keyboard pointing stick cap. 2. Purpose of this design: As a pointing device for laptops, specifically as a rubber cap on the pointing stick. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention discloses a keyboard pointing stick assisted control method and system based on multi-source sensor data, belonging to the field of computer input device technology. The method includes real-time acquisition of multi-source sensor data, real-time environmental compensation of the sensor data, data fusion to identify user operation intentions, and generation of cursor control commands based on a user adaptive control model. The system includes a pointing stick module, a sensing unit, a signal processing unit, and a microcontroller unit, and can also be equipped with a host computer driver program. This invention effectively counteracts multi-source environmental interference, improves the control accuracy and stability of the pointing stick, accurately identifies user operation intentions, achieves adaptive matching to user operating habits, and completes the modular integration of related functional units of the pointing stick. It is suitable for cursor control of integrated keyboard pointing sticks in laptops, can replace traditional mice to achieve efficient cursor operation control, and significantly improves the user experience and adaptability of the pointing stick.