# US 8,149,216 B2 · Electronic device with joystick > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,149,216 B2 - Document ID: US8149216B2 - Status: Granted - Kind: B2 - Application number: 12/566,680 - Filed: 2009-09-25 - Published: 2011-02-24 - Granted: 2012-04-03 - Earliest claimed: 2009-08-20 - Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.; Hon Hai Precision Industry Co., Ltd. - Inventors: Kim-Yeung Sip - Web page: https://patentgrep.com/patent/US8149216B2 ## CPC - G05G 1/08: Controlling members for hand actuation by rotary movement, e.g. hand wheels - G05G 9/047: the controlling member being movable by hand about orthogonal axes, e.g. joysticks {(for switches H01H25/04)} - G06F 3/0338: with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks - G05G: CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms F16C1/10; gearings or mechanisms not peculiar to this purpose F16H; speed changing or reversing mechanisms for gearings conveying rotary motion F16H59/00 - F16H63/00) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An electronic device with joystick is provided. The joystick includes a receiving space includes a plurality of first conductive elements. The device further includes a plurality of resistors, a chip, and a rotatable post. Each of the first conductive elements is electrically connected to the ground via a resistor. The chip includes a plurality of input pins, and each of the pins is electrically connected to a node between a first conductive element and a resistor. The rotatable post includes a second conductive element. The second conductive element is electrically connected to a direct current power source. When the joystick is rotated, causing the second conductive element to contact with one of the first conductive elements, the voltage of the pin connected to the second conductive element is changed. The chip detects a change of the voltage of the pins and executes corresponding functions according to the detected change. ## Claims ### Claim 1 An electronic device with a joystick, comprising: a main body defining a first hollow receiving space, wherein a plurality of first conductive elements protrude out from the inner sidewall of the first receiving space and extend along the axis of the first receiving space, each of the first conductive elements has a resistance; a plurality of resistors, wherein each of the first conductive elements is electrically grounded via one of the plurality of the resistors; a chip comprising a plurality of input pins, wherein each of the pins is electrically connected to a node between a first conductive element and a resistor connected to the first conductive element; a joystick comprising a rotatable post, wherein the rotatable post is received in the first receiving space; a second conductive element protrudes out from the sidewall of the rotatable post and extends along the axis of the rotatable post; the second conductive element is electrically connected to a direct current power source; wherein when the joystick is rotated, causing the second conductive element to contact with a portion of one of the first conductive elements, a voltage value of the pin connected to the second conductive element is changed; the chip detects a change of the voltage value of the pins and executes corresponding functions according to the detected change of the voltage value of the pins. ### Claim 2 (depends on 1) The electronic device as described in claim 1, wherein when the chip detects the voltage value of one of the pins is a fixed value with a predetermined time interval, the chip executes a predetermined function. ### Claim 3 (depends on 1) The electronic device as described in claim 1, wherein the first receiving space comprises a first slot, a second slot, and a third slot; the second slot communicates with the first slot and the third slot. ### Claim 4 (depends on 3) The electronic device as described in claim 3, wherein a plurality of insulating ribs protrude out from the first slot; and each first conductive element is disposed between two insulated ribs. ### Claim 5 (depends on 3) The electronic device as described in claim 3, wherein the radius of the second slot is less than that of the third slot. ### Claim 6 (depends on 5) The electronic device as described in claim 5, further comprising a conductive post, wherein the conductive post comprises a neck portion and a head portion; the neck portion is received in the second slot, and the head portion is received in the third portion; and the radius of the head portion is greater than that of the second slot; and the rotatable post is moveably connected to the conductive post. ### Claim 7 (depends on 6) The electronic device as described in claim 6, wherein an elastic projection protrudes out from the sidewall of the conductive post; a receiving hole is defined in the rotatable post and extends along the axis of the rotatable post; a sliding slot is formed along the axis of the rotatable post, the sliding slot comprises two opposite ends; the conductive post is received in the receiving hole of the rotatable post, and the elastic projection penetrates through the sliding slot. ### Claim 8 (depends on 7) The electronic device as described in claim 7, further comprising a third conductive element and a fourth conductive element; wherein the third conductive element is attached to one end of the rotatable post, and comprises a through hole communicating with the receiving hole of the rotatable post; the fourth conductive element protrudes out from the end of the rotatable post; and the second conductive element is electrically connected to the fourth conductive element via the fourth conductive element. ### Claim 9 (depends on 8) The electronic device as described in claim 8, wherein the conductive post is electrically connected to the direct current power source, and the resistance value of the conductive post is negligible. ### Claim 10 (depends on 1) The electronic device as described in claim 1, wherein the joystick further comprises a handle, the handle is attached to one end of the rotatable post. ### Claim 11 (depends on 10) The electronic device as described in claim 10, wherein a second receiving space is defined in the main body, the second receiving space is for receiving the handle.