Darfon Electronics Corporation

Darfon Electronics (suzhou) Co., Ltd.

Te Ping Hsu

Xi Sheng Chen

A key scanning method and an input device thereof are provided. The key scanning method for an input device with at least a first key group and a subsidiary key group comprises: triggering a first main scan line electrically connected to the first key group and reading electrical signals received via a plurality of signal sensing lines electrically connected to the first key group to determine whether any said key among the first key group is triggered; and triggering a non-triggered one of a plurality of subsidiary scan lines electrically connected to the subsidiary key group and reading electrical signals received via another plurality of signal sensing lines electrically connected to the subsidiary key group to determine whether any said key among the subsidiary key group is triggered, wherein the first main scan line and the subsidiary scan lines are triggered one after another for multiple times.

Key scanning method and input device implemented therewith

A key scanning method, a scan method for a key scan circuit, and an input device thereof are provided. The key scanning method comprises performing a first scan procedure which includes triggering a first main scan line and reading electrical signals received via a plurality of signal sensing lines to determine whether any of the keys among a first key group is triggered. Then, performing a second scan procedure which includes triggering at least one of a plurality of secondary scan lines and reading the electrical signals received via the plurality of signal sensing lines to determine whether any of the keys among a second key group is triggered. In the key scanning method, the first scan procedure and the second scan procedure are performed one after another, and each of the secondary scan lines is triggered at least once.

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Taoyuan, Taiwan

Te Ping Hsu