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Key setting method

A key and keyboard technology, applied in the setting field of the ADC key, can solve the problems of analog input signal change, inability to correctly identify the key press, and ADC key unable to correctly identify the analog input signal, etc.

Inactive Publication Date: 2013-08-14
MEDIATEK SINGAPORE PTE LTD SINGAPORE
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  • Application Information

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Problems solved by technology

[0002] In general, each analog input signal may vary significantly due to noise or power violations, making it impossible for existing ADC buttons to correctly identify an analog input signal generated at the button's output port from multiple other signals
Therefore, existing ADCs generate the same digital output signal by converting two different analog input signals that originally corresponded to different digital outputs, which will cause later hardware or software components to fail to correctly identify which key is pressed

Method used

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Embodiment Construction

[0009] Certain terms are used throughout the specification and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same element. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open-ended term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that the first device is coupled to the second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0010] Please refer to figure 1 , which is a v...

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Abstract

The invention provides a key setting method, which is used for setting a plurality of keys of a keyboard of an ADC (analog-to-digital converter), and includes the following steps: respectively conforming a plurality of dividing voltages corresponding to the keys through a processing unit as per a plurality of voltage variation ranges corresponding to the keys; and calculating a plurality of resistance values of a dividing voltage model at least as per the dividing voltage, wherein the dividing voltage model is provided with the dividing voltage set respectively corresponding to the key. In the method for setting the keys of the ADC, provided by the invention, the processing unit is used for setting the corresponding voltage variation range when the key is pressed down, so that each voltage variation range is not overlapped with the voltage variation ranges of other keys, as a result, the ADC can be used for converting the different simulated voltage signals into different digital output signals, and the processing unit can be used for correctly recognizing the key pressed down through detecting the digital output signal.

Description

technical field [0001] The present invention relates to an analog-to-digital converter (Analog-to-Digital Converter, hereinafter referred to as ADC) button, and in particular to a method for setting the ADC button. Background technique [0002] In general, each analog input signal may vary significantly due to noise or power violations, making it impossible for existing ADC buttons to correctly identify an analog input signal generated at the button's output port from multiple other signals . Therefore, existing ADCs generate the same digital output signal by converting two different analog input signals that originally correspond to different digital outputs, which will cause later hardware or software components to fail to correctly identify which key is pressed. Contents of the invention [0003] In view of this, it is necessary to provide a setting method that can correctly identify the corresponding ADC key that is pressed. [0004] An embodiment of the present inve...

Claims

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Application Information

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IPC IPC(8): H03M11/02
CPCH03M1/1009H03M11/24H03M1/1061H04L25/4917
Inventor 兰坤刘颖异周煜凯
Owner MEDIATEK SINGAPORE PTE LTD SINGAPORE
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