# US 11,908,306 B2 · Rescue request apparatus, rescue request method, and non-transitory computer readable medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,306 B2 - Document ID: US11908306B2 - Status: Granted - Kind: B2 - Application number: 16/961,434 - Filed: 2018-11-16 - Published: 2020-11-12 - Granted: 2024-02-20 - Earliest claimed: 2018-01-15 - Assignees: NEC Platforms, Ltd. - Applicants: NEC Platforms, Ltd. - Inventors: Naruki Saito - Web page: https://patentgrep.com/patent/US11908306B2 ## CPC - G01S 19/49: whereby the further system is an inertial position system, e.g. loosely-coupled - G08B 25/016: {Personal emergency signalling and security systems (emergency non-personal manually actuated alarm activators G08B25/12)} - G01S 19/17: Emergency applications - G01S 19/393: {Trajectory determination or predictive tracking, e.g. Kalman filtering} - G06T 7/20: Analysis of motion (motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51) - G08B 21/02: Alarms for ensuring the safety of persons - G08B 21/182: {Level alarms, e.g. alarms responsive to variables exceeding a threshold} - G08B 25/08: using communication transmission lines {(G08B13/19658, G08B21/0286, G08B25/016 take precedence)} - G08B 25/10: using wireless transmission systems {(G08B25/009 takes precedence)} - G10L 15/22: Procedures used during a speech recognition process, e.g. man-machine dialogue - H04M 11/04: with alarm systems, e.g. fire, police or burglar alarm systems - H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils - H04N 23/60: Control of cameras or camera modules - G01S 19/47: the supplementary measurement being an inertial measurement, e.g. tightly coupled inertial - G06T 2207/30241: Trajectory - G06T 2207/30244: Camera pose - G10L 15/00: Speech recognition (G10L17/00 takes precedence) - G10L 2015/223: {Execution procedure of a spoken command} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A rescue request apparatus (1) includes a radio communication unit (2) configured to perform radio communication, a trajectory acquisition unit (3) configured to acquire a movement trajectory of the rescue request apparatus when the radio communication cannot be performed by the radio communication unit (2), a user-state determination unit (4) configured to determine whether or not a user of the rescue request apparatus is in a dangerous state, and a drive control unit (5) configured to drive and control the rescue request apparatus so as to trace the movement trajectory acquired by the trajectory acquisition unit (3) when the user-state determination unit (4) determines that the user is in the dangerous state. The radio communication unit (2) transmits a rescue request signal to a pre-registered destination when the radio communication becomes possible. ## Claims ### Claim 1 A rescue request apparatus comprising: a processor; and a memory storing instructions executable by the processor to: acquire a movement trajectory of the rescue request apparatus in response to determining that radio communication cannot be performed; determine whether or not a user is in a dangerous state; drive and control the rescue request apparatus so as to trace the movement trajectory in response to determining that the user is in the dangerous state; and a rescue request signal to a pre-registered destination in response to determining that the radio communication has become possible. ### Claim 2 (depends on 1) The rescue request apparatus according to claim 1, wherein the the rescue request signal that is transmitted includes trajectory information about the movement trajectory. ### Claim 3 (depends on 1) The rescue request apparatus according to claim 1, wherein the movement trajectory of the rescue request apparatus is acquired when at least one of following conditions is satisfied: the radio communication cannot be performed; and a GPS (Global Positioning System) signal cannot be acquired. ### Claim 4 (depends on 3) The rescue request apparatus according to claim 3, wherein the movement trajectory is acquired by periodically acquiring a current position from a place where at least one of the following conditions is satisfied: the radio communication cannot be performed the GPS signal cannot be acquired, to a place where the user is in the dangerous state. ### Claim 5 (depends on 1) The rescue request apparatus according to claim 1, wherein the instructions are executable by the processor to further recognize a voice uttered by the user, wherein the user is determined to be in the dangerous state when the voice uttered by the user includes a term indicating a rescue request. ### Claim 6 (depends on 1) The rescue request apparatus according to claim 1, further comprising a camera that captures an image of surroundings of the rescue request apparatus including the user when the user is determined to be in the dangerous state, wherein the rescue request signal that is transmitted includes the image. ### Claim 7 (depends on 6) The rescue request apparatus according to claim 6, wherein the image is one of a plurality of images of the surroundings of the rescue request apparatus that are successively captured by the camera while the rescue request apparatus is moving so as to trace the movement trajectory. ### Claim 8 (depends on 1) The rescue request apparatus according to claim 1, further comprising a sensor configured to acquire information about a state of the rescue request apparatus, wherein the user is determined to be in the dangerous state when the information about the state of the rescue request apparatus is equal to or larger than a first threshold. ### Claim 9 (depends on 1) The rescue request apparatus according to claim 1, further comprising a sensor configured to acquire biometric information of the user, wherein the user is determined to be in the dangerous state when at least one of following conditions is satisfied: a condition that the biometric information of the user is equal to or larger than a threshold; and the biometric information is smaller than a different threshold. ### Claim 10 (depends on 1) The rescue request apparatus according to claim 1, wherein the instructions are executable by the processor to further: recognize a voice uttered by the user; and stops driving and controlling of the rescue request apparatus when the voice uttered by the user includes a term indicating that the driving and controlling of the rescue request apparatus should be stopped while the rescue request apparatus is being driven and controlled. ### Claim 11 (depends on 1) The rescue request apparatus according to claim 1, wherein the instructions are executable by the processor to further acquire a time that has been taken for movement from a start point position to an end point position of the movement trajectory. ### Claim 12 (depends on 3) The rescue request apparatus according to claim 3, further comprising: a gyroscopic sensor that detects a rotational angular speed of the rescue request apparatus; an acceleration sensor that detects an acceleration of the rescue request apparatus; and a geomagnetic sensor that detects a direction of the rescue request apparatus, wherein the instructions are executable by the processor to further acquire a current position of the rescue request apparatus every predetermined time on a basis of data detected by the gyroscopic sensor, the acceleration sensor, and the geomagnetic sensor to acquire the movement trajectory when the GPS signal cannot be acquired. ### Claim 13 A rescue request method comprising: acquiring, by a rescue request apparatus, a movement trajectory of the rescue request apparatus in response to determining that radio communication cannot be performed; determining, by the rescue request apparatus, whether or not a user is in a dangerous state; driving and controlling, by the rescue request apparatus, the rescue request apparatus so as to trace the movement trajectory in response to determining that the user is in the dangerous state; and transmitting, by the rescue request apparatus, a rescue request signal to a pre-registered destination in response to determining that the radio communication has become possible. ### Claim 14 A non-transitory computer readable medium storing a program for executable by a rescue request apparatus to perform: acquiring a movement trajectory of the rescue request apparatus in response to determining that radio communication cannot be performed; determining whether or not a user is in a dangerous state; driving and controlling the rescue request apparatus so as to trace the movement trajectory in response to determining that the user is in the dangerous state; and transmitting a rescue request signal to a pre-registered destination in response to determining that the radio communication has become possible.