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US 10,254,892 B2Granted
Hotknot based proximity detection method, apparatus and touch screen terminal
AssigneeShenzhen Goodix Technology Co., Ltd.
InventorsJun Fang, Yuepeng Wan
Life of this patent
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Abstract
A proximity detection method and apparatus, and a touch screen terminal are provided. The method includes: sending a proximity detection sequence to a touch screen terminal; after the touch screen terminal determines that the proximity detection sequence is valid, receiving a proximity response sequence fed back by the touch screen terminal; and determining whether the proximity response sequence is valid according to signal strength of frequencies in the proximity response sequence and at least two preset signal strength thresholds, to determine whether the touch screen terminal approaches.
Claims12
A proximity detection method, comprising:
- sending a proximity detection sequence to a touch screen terminal, wherein the proximity detection sequence comprises at least three symbols modulated at different frequencies;
- receiving a proximity response sequence fed back by the touch screen terminal, wherein symbols in the proximity response sequence are the same as those in the proximity detection sequence;
- and
- determining whether the proximity response sequence is valid according to signal strength of frequencies in the proximity response sequence and at least two preset signal strength thresholds, to determine whether the touch screen terminal approaches, wherein the at least two preset signal strength thresholds comprises a first preset signal strength threshold and a second preset signal strength threshold, the second preset signal strength threshold is greater than the first preset signal strength threshold, the at least two preset signal strength thresholds defines at least three signal strength threshold ranges;
- wherein determining whether the proximity response sequence is valid according to signal strength of frequencies in the proximity response sequence and at least two preset signal strength thresholds to determine whether the touch screen terminal approaches further comprises:
- recording a signal strength of the symbol modulated at each frequency in the proximity response sequence, comparing the recorded signal strength of the symbol modulated at each frequency with the at least two preset signal strength thresholds to determine into which signal strength threshold range of the at least three signal strength threshold ranges that the recorded signal strength of the symbol modulated at each frequency falls;
- and
- when at least three of the recorded signal strength falls into a signal strength threshold range between the first and the second preset signal strength thresholds or falls into a signal strength threshold range greater than the second preset signal strength threshold, determining that the proximity response sequence is valid, and then determining that the touch screen terminal approaches.
5 more elements
A proximity detection apparatus, comprising:
- a transmission module configured to send a proximity detection sequence to a touch screen terminal, wherein the proximity detection sequence comprises at least three symbols modulated at different frequencies;
- a receiving module configured to receive a proximity response sequence fed back by the touch screen terminal, wherein symbols in the proximity response sequence are the same as those in the proximity detection sequence;
- and
- a frequency scan module configured to determine whether the proximity response sequence is valid according to signal strength of frequencies in the proximity response sequence and at least two preset signal strength thresholds, to determine whether the touch screen terminal approaches, wherein the at least two preset signal strength thresholds comprises a first preset signal strength threshold and a second preset signal strength threshold, the second preset signal strength threshold is greater than the first preset signal strength threshold, the at least two preset signal strength thresholds defines at least three signal strength threshold ranges;
- wherein the frequency scan module further comprises:
- an acquiring unit configured to record a signal strength of the symbol modulated at each frequency in the proximity response sequence, comparing the recorded signal strength of the symbol modulated at each frequency with the at least two preset signal strength thresholds to determine into which signal strength threshold range of the at least three signal strength threshold ranges that the recorded signal strength of the symbol modulated at each frequency falls;
- and
- a determining unit, wherein when at least three of the recorded signal strength falls into a signal strength threshold range between the first and the second preset signal strength thresholds or falls into a signal strength threshold range greater than the second preset signal strength thresholds, the determining unit is configured to:
- determine that the proximity response sequence is valid, and
- determine that the touch screen terminal approaches.
7 more elements
A touch screen terminal, wherein the touch screen terminal comprises a proximity detection apparatus connected to the touch screen, wherein the proximity detection apparatus comprises:
- a transmission module configured to send a proximity detection sequence to an objective device, wherein the proximity detection sequence comprises at least three symbols modulated at different frequencies;
- a receiving module configured to receive a proximity response sequence fed back by the objective device, wherein symbols in the proximity response sequence are the same as those in the proximity detection sequence;
- and
- a frequency scan module configured to determine whether the proximity response sequence is valid according to signal strength of frequencies in the proximity response sequence and at least two preset signal strength thresholds, to determine whether the objective device approaches, wherein the at least two preset signal strength thresholds comprises a first preset signal strength threshold and a second preset signal strength threshold, the second preset signal strength threshold is greater than the first preset signal strength threshold, the at least two preset signal strength thresholds defines at least three signal strength threshold ranges;
- wherein the frequency scan module further comprises:
- an acquiring unit configured to record a signal strength of the symbol modulated at each frequency in the proximity response sequence, comparing the recorded signal strength of the symbol modulated at each frequency with the at least two preset signal strength thresholds to determine into which signal strength threshold range of the at least three signal strength threshold ranges that the recorded signal strength of the symbol modulated at each frequency falls;
- and
- a determining unit, wherein when at least three of the recorded signal strength falls into a signal strength threshold range between the first and the second preset signal strength thresholds or falls into a signal strength threshold range greater than the second preset signal strength threshold, the determining unit is configured to:
- determine that the proximity response sequence is valid, and determine that the touch screen terminal approaches.
6 more elements
Dependencies are inferred from the claim text.