Patent Number: 
Section: claims

1. A method of automatically cutting off power in a mobile electronic unit comprising:cutting off the power of the mobile electronic unit when a battery voltage is detected in a first check section as not being in a normal state during a booting period of the mobile electronic unit;(a1) checking the battery voltage before a predetermined time from a starting time of the first check section;(a2) checking the battery voltage after a predetermined time from an ending time of the first check section; and(a3) generating a power cutting off signal when a difference between the battery voltages checked in steps (a1) and (a2) is more than a predetermined reference value. 2. The method of claim 1, further comprising cutting off the power of the mobile electronic unit when the battery voltage detected in the first check section is in the normal state and when a battery voltage is detected in a second check section as not being in a normal state during a period of time after the booting period of the mobile electronic unit is completed. 3. The method of claim 1, further comprising comparing a battery voltage detected during a performance period of an operation mode where a current higher than a standard consumption current is used with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times. 4. A method of automatically cutting off power in a mobile electronic unit comprising cutting off the power of the mobile electronic unit when a battery voltage is detected in a first check section as not being in a normal state during a booting period of the mobile electronic unit, wherein the first check section includes at least one of a first sub-section, corresponds to an on-time section of primary elements at an initial stage of booting, and a second sub-section includes a driving period of elements where a current higher than a standard consumption current is used, the method further comprising;(a) generating a power cutting off signal when a battery voltage checked in the first sub-section is less than a first reference value; and(b) generating the power cutting off signal when the battery voltage checked in the first sub-section is areater than the first reference value, and when a difference between the battery voltage detected before a predetermined time from a starting time of the second sub-section and the battery voltage detected after a predetermined time from an ending time of the second sub-section is greater than a second reference value. 5. A method of automatically cutting off power in a mobile electronic unit comprising:cutting off the power of the mobile electronic unit when a battery voltage is detected in a first check section as not being in a normal state during a booting period of the mobile electronic unit, andcutting off the power of the mobile electronic unit when the battery voltage detected in the first check section is in the normal state and when a battery voltage is detected in a second check section as not being in a normal state during a period of time after the booting period of the mobile electronic unit is completed, wherein the second check section includes one of a third sub-section which corresponds to a stabilization period after booting of the mobile electronic unit is completed, a fourth sub-section including a driving period of elements at an initial stage of a predetermined operation mode, and a fifth sub-section including a performance period of an operation mode where a current higher than a standard consumption current is used. 6. The method of claim 5 further comprising:(a) checking the battery voltage before a predetermined time from a starting time of the fourth sub-section;(b) checking the battery voltage after a predetermined time from an ending time of the fourth sub-section; and(c) generating a power cutting off signal when a difference between the battery voltages checked in steps (a) and (b) is greater than a predetermined reference value. 7. The method of claim 6 further comprising comparing a battery voltage detected during the third sub-section with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times. 8. The method of claim 5 further comprising:(a) generating the power cutting off signal when a difference between the battery voltage detected before a predetermined time from a starting time of the fourth sub-section and the battery voltage detected after a predetermined time from an ending time of the fourth sub-section is greater than a first reference value; and(b) generating the power cutting off signal when a difference between the battery voltage detected before a predetermined time from the starting time of the fifth sub-section and the battery voltage detected after a predetermined time from an ending time of the fifth sub-section is greater than a second reference value. 9. The method of claim 8 further comprising comparing a battery voltage detected during the third sub-section with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times. 10. The method of claim 5 further comprising:(a) comparing a battery voltage detected during the third sub-section with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times; and(b) generating the power cutting off signal when a difference between the battery voltages in step (a) is greater than the threshold voltage and when a difference between the battery voltage detected before a predetermined time from the starting time of the fourth sub-section and the battery voltage detected after a second predetermined time from the ending time of the fourth sub-section is greater than a first reference value; and(c) generating the power cutting off signal when a difference between the battery voltages in step (b) is less than a first reference value and when a difference between the battery voltage detected before a predetermined time from the starting time of the fifth sub-section and the battery voltage detected after a predetermined time from the ending time of the fifth sub-section is greater than a second reference value. 11. A computer-readable recording medium comprising:a program for cutting off the power of the mobile electronic unit when a battery voltage detected in a first check section is not in a normal state during a booting period of the mobile electronic unit; anda program for cutting off the power of the mobile electronic unit when the battery voltage detected with respect to the first check section is in the normal state and when a battery voltage detected in a second check section is not in the normal state during a period after booting of the mobile electronic unit is completed. 12. The computer-readable recording medium of claim 11, further comprising a program for cutting off the power of the mobile electronic unit when the battery voltage detected in the first check section is in the normal state and when a battery voltage is detected in a second check section as not being in a normal state during a period of time after the booting period of the mobile electronic unit is completed. 13. The computer-readable recording medium of claim 12, wherein the second check section includes at least one of a third sub-section which corresponds to a stabilization period after booting of the mobile electronic unit is completed, a fourth sub-section including a driving period of elements at an initial stage of a predetermined operation mode, and a fifth sub-section including a performance period of an operation mode where a current higher than a standard consumption current is used. 14. The computer-readable recording medium of claim 13 further comprising:(a) a program for checking the battery voltage before a predetermined time from a starting time of the fourth sub-section;(b) a program for checking the battery voltage after a predetermined time from an ending time of the fourth sub-section; and(c) a program for generating a power cutting off signal when a difference between the battery voltages checked by the programs in (a) and (b) is greater than a predetermined reference value. 15. The computer-readable recording medium of claim 14 further comprising a program for comparing a battery voltage detected during the third sub-section with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times. 16. The computer-readable recording medium of claim 13 further comprising:(a) a program for generating the power cutting off signal when a difference between the battery voltage detected before a predetermined time from a starting time of the fourth sub-section and the battery voltage detected after a predetermined time from an ending time of the fourth sub-section is greater than a first reference value; and(b) a program for generating the power cutting off signal when a difference between the battery voltage detected before a predetermined time from the starting time of the fifth sub-section and the battery voltage detected after a predetermined time from an ending time of the fifth sub-section is greater than a second reference value. 17. The computer-readable recording medium of claim 16 further comprising a program for comparing a battery voltage detected during the third sub-section with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times. 18. The computer-readable recording medium of claim 13 further comprising:(a) a program for comparing a battery voltage detected during the third sub-section with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times; and(b) a program generating the power cutting off signal when a difference between the battery voltages determined by the program in (a) is greater than the threshold voltage and when a difference between the battery voltage detected before a predetermined time from the starting time of the fourth sub-section and the battery voltage detected after a second predetermined time from the ending time of the fourth sub-section is greater than a first reference value; and(c) a program for generating the power cutting off signal when a difference between the battery voltages determined by the program in (b) is less than a first reference value and when a difference between the battery voltage detected before a predetermined time from the starting time of the fifth sub-section and the battery voltage detected after a predetermined time from the ending time of the fifth sub-section is greater than a second reference value. 19. The computer-readable recording medium of claim 11, further comprising a program for comparing a battery voltage detected during a performance period of an operation mode where a current higher than a standard consumption current is used with a threshold voltage and generating a power cutting off signal when the detected battery voltage is less than the threshold voltage for more than a predetermined number of times.