# US 2014/0197941 A1 · Car key and car control method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197941 A1 - Document ID: US20140197941A1 - Status: Published application - Kind: A1 - Application number: 13/863,413 - Filed: 2013-04-16 - Published: 2014-07-17 - Earliest claimed: 2013-01-17 - Assignees: Chi Mei Communication Systems, Inc. - Applicants: Chi Mei Communication Systems, Inc. - Inventors: CHUN-CHIH YU - Web page: https://patentgrep.com/patent/US20140197941A1 ## CPC - E05B 19/0088: {Displays on keys, e.g. LED or LCD screens} - G07C 9/00309: {operated with bidirectional data transmission between data carrier and locks} - G07C 2009/00261: {the keyless data carrier having more than one function} - E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE ## Abstract In a method for controlling a car using a car key, a selected function is received from a function menu displayed on an operation interface of a display device of the car key. System data about the car is acquired from a management unit of the car, and devices of the car are controlled using the management unit, according to the selected function. The system data about the car or status of the devices of the car is displayed on the operation interface of the display device. ## Claims ### Claim 1 A computer-implemented method being executed by a processor of a car key, the method comprising: (a) receiving a selected function from a function menu displayed on an operation interface of a display device of the car key; (b) acquiring system data about a car from a management unit of the car, and controlling devices of the car using the management unit, according to the selected function; and (c) displaying the system data about the car or status of the devices of the car on the operation interface of the display device. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein the operation interface includes a status area, a display area, and an operation area, wherein: the status area displays battery status of the car key, date and time information; the display area displays the system data about the car or the status of the devices of the car; the operation area indicates a page number of the operation interface, and is pressed and dragged to turn the operation interface to a next page. ### Claim 3 (depends on 1) The method as claimed in claim 1, wherein in step (c), the system data about the car and the status of the devices of the car is in a digital or a graphical display. ### Claim 4 (depends on 1) The method as claimed in claim 1, wherein in step (c), a warning message is displayed on the operation interface in response that there is an unusual condition of the car, and the warning message is turn off in response that the unusual condition has been resolved. ### Claim 5 A non-transitory storage medium storing a set of instructions, the set of instructions being executed by a processor of a car key, to perform a method comprising: (a) receiving a selected function from a function menu displayed on an operation interface of a display device of the car key; (b) acquiring system data about a car from a management unit of the car, and controlling devices of the car using the management unit, according to the selected function; and (c) displaying the system data about the car or status of the devices of the car on the operation interface of the display device. ### Claim 6 (depends on 5) The non-transitory storage medium as claimed in claim 5, wherein the operation interface includes a status area, a display area, and an operation area, wherein: the status area displays battery status of the car key, date and time information; the display area displays the system data about the car or the status of the devices of the car; the operation area indicates a page number of the operation interface, and is pressed and dragged to turn the operation interface to a next page. ### Claim 7 (depends on 5) The non-transitory storage medium as claimed in claim 5, wherein in step (c), the system data about the car and the status of the devices of the car is in a digital or a graphical display. ### Claim 8 (depends on 5) The non-transitory storage medium as claimed in claim 5, wherein in step (c), a warning message is displayed on the operation interface in response that there is an unusual condition of the car, and the warning message is turn off in response that the unusual condition has been resolved. ### Claim 9 A car key of a car comprising a management unit, the car key comprising: a display device; a storage unit; at least one processor; one or more programs that are stored in the storage unit and are executed by the at least one processor, the one or more programs comprising: a receiving module that receives a selected function from a function menu displayed on an operation interface of the display device; an implementing module that acquires system data about the car from the management unit, and controls devices of the car using the management unit, according to the selected function; and a display module that displays the system data about the car or status of the devices of the car on the operation interface of the display device. ### Claim 10 (depends on 9) The car key as claimed in claim 9, wherein the operation interface includes a status area, a display area, and an operation area, wherein: the status area displays battery status of the car key, date and time information; the display area displays the system data about the car or the status of the devices of the car; the operation area indicates a page number of the operation interface, and is pressed and dragged to turn the operation interface to a next page. ### Claim 11 (depends on 9) The car key as claimed in claim 9, wherein the system data about the car and the status of the devices of the car is in a digital or a graphical display. ### Claim 12 (depends on 9) The car key as claimed in claim 9, wherein the display module further displays a warning message on the operation interface in response that there is an unusual condition of the car, and the warning message is turn off in response that the unusual condition has been resolved.