# US 7,608,050 B2 · Motion detector for a mobile device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,608,050 B2 - Document ID: US7608050B2 - Status: Granted - Kind: B2 - Application number: 11/440,878 - Filed: 2006-05-25 - Published: 2007-11-29 - Granted: 2009-10-27 - Earliest claimed: 2006-05-25 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Christopher John Shugg - Web page: https://patentgrep.com/patent/US7608050B2 ## CPC - G01C 22/006: {Pedometers} - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) ## Abstract A portable electronic device comprises a motion sensor to detect motion and to generate motion data, and an activity monitor to detect user activity based on said motion data. A power detection circuit detects connection of said portable electronic device to an external supply power. A control circuit monitors the output signal from the detection circuit and prevents activity detection by said activity monitor while said portable electronic device is connected to said power supply. ## Claims ### Claim 1 A wireless communication device comprising: a wireless transceiver; a pedometer to detect motion and to generate motion data; an activity monitor to detect user activity based on said motion data; a power detection circuit to detect connection of said wireless communication device to an external power supply; and a control circuit responsive to signals from said power detection circuit to prevent activity detection by said activity monitor while said wireless communication device is connected to said power supply and while said wireless transceiver is operable. ### Claim 2 (depends on 1) The wireless communication device of claim 1 wherein the activity monitor counts steps taken by said user. ### Claim 3 (depends on 2) The wireless communication device of claim 2 wherein the activity monitor is adapted to perform at least one of the following: compute a distance walked based on the number of steps taken; compute calories burned based on the number of steps taken. ### Claim 4 (depends on 1) The wireless communication device of claim 1 wherein said wireless communication device comprises a wireless telecommunications device with radio transmit and receive capability. ### Claim 5 (depends on 1) The wireless communication device of claim 1 wherein the activity monitor generates an activity report based at least in part on data received from said pedometer. ### Claim 6 (depends on 4) The wireless communication device of claim 4 wherein said wireless communication device is adapted to maintain said radio transmit and receive capability when said activity detection by said activity monitor is prevented in response to said signals from said power detection circuit. ### Claim 7 (depends on 5) The wireless communication device of claim 5 further comprising a display to display the activity report. ### Claim 8 (depends on 1) The wireless communication device of claim 1 wherein the motion detector comprises an accelerometer. ### Claim 9 (depends on 1) The wireless communication device of claim 1 wherein the control circuit prevents activity detection by disabling said pedometer while said wireless communication device is connected to said external power supply. ### Claim 10 (depends on 1) The wireless communication device of claim 1 wherein the control circuit prevents activity detection by pausing said activity monitor while said wireless communication device is connected to said external power supply. ### Claim 11 In a wireless communication device with a pedometer, an activity monitor, a power detection circuit, and a wireless transceiver, a method comprising: detecting user activity with the activity monitor based on motion data from the pedometer; detecting using the power detection circuit, connection of the wireless communication device to an external power source; and suspending activity detection of the activity monitor responsive to a signal from the power detection circuit indicating the detection of connection while said wireless communication device is connected to said external power source and while said wireless transceiver remains operable. ### Claim 12 (depends on 11) The method of claim 11 wherein detecting user activity comprises detecting steps taken by said user. ### Claim 13 (depends on 12) The method of claim 12 further comprising computing distance walked based on the number of steps taken. ### Claim 14 (depends on 12) The method of claim 12 further comprising computing calories burned based on the number of steps taken. ### Claim 15 (depends on 11) The method of claim 11 further comprising generating an activity report. ### Claim 16 (depends on 15) The method of claim 15 further comprising storing the activity report in memory. ### Claim 17 (depends on 15) The method of claim 15 further comprising displaying the activity report on a display. ### Claim 18 (depends on 11) The method of claim 11 further comprising both transmitting radio signals from said wireless communication device and receiving radio signals by said wireless communication device while said activity detection is suspended. ### Claim 19 (depends on 11) The method of claim 11 wherein suspending activity detection comprises disabling said pedometer while said wireless communication device is connected to said external power supply. ### Claim 20 (depends on 11) The method of claim 11 wherein suspending activity detection comprises ignoring data produced by said pedometer while said wireless communication device is connected to said external power supply.