Power supply control method for radio-frequency identification reader in mobile terminal

摘要

A power control method for an RFID reader in a mobile terminal includes the steps of: checking a driving mode of a display in a standby mode where no power is supplied to the RFID reader; if the driving mode of the display is a sleep mode, maintaining the RFID reader in the standby mode, and if the driving mode of the display is an operation mode, checking an RFID menu interface; and if the RFID menu interface has no RFID automatic detection function settled therein, maintaining the RFID reader in the standby mode, and if the RFID menu interface has an RFID automatic detection function settled therein, supplying power to the RFID reader so that the RFID reader is switched to a read mode.

主权项

1. A power control method for an RFID (radio frequency identification) reader in a mobile terminal which includes a display in an activated state or deactivated state by turning the display on or off in response to the supply of power to the display or when power to the display is interrupted, comprising the steps of:
(a) in a standby mode of the RFID reader when no power is supplied to the RFID reader, checking whether the display is turned on or off; (b) if the display is turned off in step (a), maintaining the standby mode of the RFID reader, and if the display is turned on in step (a) further checking an RFID menu interface so as to determine whether an RFID automatic detection function is set in the RFID menu interface; (c) if the RFID automatic detection function is not set in the RFID menu interface in step (b), maintaining the RFID reader in the standby mode, and if the RFID automatic detection function is set in the RFID menu interface in step (b), supplying power to the RFID reader so that the RFID reader is switched from the standby mode of the RFID reader to a read mode of the RFID reader; (d) after switching to the read mode of the RFID reader in step (c), checking whether the mobile terminal is in a standby mode or in an operation mode; (e) if the mobile terminal in step (d) is in the operation mode, determining whether or not a function other than an RFID reading function at the mobile terminal is currently being run; (f) if no function other than the RFID reading function at the mobile terminal is currently being run in step (e), judging whether or not an RFID signal is received within a predetermined time while maintaining the RFID reader in the read mode and (g) if the RFID signal is received within the predetermined time in step (f). continuously maintaining the RFID reader in the read mode, and if no RFID signal is received within the predetermined time in step (f), interrupting the supply of power to the RFID reader so that the RFID reader is switched from the read mode of the RFID reader to the standby mode of the RFID reader; (h) if a function other than the RFID reading function is currently being run in step (e), interrupt the supply of power to the RFID reader so that the RFID reader is switched from the read mode of the RFID reader to the standby mode of the RFID reader; (i) when the RFID reader is maintained in the standby mode in step (h), check whether or not the function other than the RFID reading function is finished; (j) if the function other than the RFID reading function is finished in step (i), determine whether the display is turned on or off and further checking whether the mobile terminal is in the standby mode or in the operation mode; and (k) if the display is turned on or the mobile terminal is in the operation mode of the mobile terminal in step (j), judge whether or not the function other than the RFID reading function is currently being run, and if no function other than the RFID reading function is currently being run, repeatedly perform an RFID automatic detection until the display is turned off; (l) judging whether RFID signal reading is finished or not after performing the RFID automatic detection in the step (k); (m) if the RFID signal reading is not finished in the step (n), maintaining the RFID reader in the read mode; and (n) if the RFID signal reading is finished in the step (n), repeatedly performing the RFID automatic detection until the display is changed to be turned off and then switching the RFID reader from the read mode to the standby mode.