1. A method for controlling an operation of an electrical handheld power tool including a drive motor and an electrical energy store, comprising:
determining that a parameter in the handheld power tool is beyond a threshold value; and
controlling the drive motor in such a way that a torque output by the torque motor undergoes a periodic oscillation between a first value and a second value, wherein a frequency of the oscillation is below an audible range.
2. The method as recited in claim 1, wherein:
the first value corresponds to a torque preselectable by a user, and
the second value is smaller than the first value.
3. The method as recited in claim 2, wherein the second value corresponds to zero.
4. The method as recited in claim 1, further comprising:
setting the first and second values for the periodic oscillation in such a way that a difference between the first and the second values is a function of a difference between the parameter and the threshold value.
5. The method as recited in claim 1, further comprising:
changing the frequency as a function of a difference between the parameter and the threshold value.
6. The method as recited in claim 1, further comprising:
setting the first and the second values for the periodic oscillation in such a way that a mean value of the output torque corresponds to zero if the parameter approximates a predetermined value beyond the threshold value.
7. The method as recited in claim 1, further comprising:
equating the first and the second values for the periodic oscillation after a predetermined time period after the threshold value has passed through the parameter.
8. The method as recited in claim 1, further comprising:
switching off the drive motor after determining that the parameter is beyond the threshold value by a predetermined value.
9. A computer program product having a program code for carrying out a method for controlling an operation of an electrical handheld power tool including a drive motor and an electrical energy store, the method comprising:
determining that a parameter in the handheld power tool is beyond a threshold value; and
controlling the drive motor in such a way that a torque output by the torque motor undergoes a periodic oscillation between a first value and a second value, wherein a frequency of the oscillation is below an audible range, and wherein the computer program product one of is executed on a processing unit and is stored on a computer-readable data carrier.
10. An electrical handheld power tool, comprising:
an electrical energy store;
a drive motor that is operated from the electrical energy store; and
a control unit for determining that a parameter in the handheld power tool is beyond a threshold value, and for controlling the drive motor in such a way that a torque output by the drive motor undergoes a periodic oscillation between a first value and a second value, a frequency of the oscillation being below an audible range.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An optical disk data-writing method comprising the steps of:
(a) generating a data-writing reference clock signal used to obtain a data-writing timing upon recording data to the optical disk;
(b) generating a predetermined sector synchronizing signal from said data-writing reference clock signal;
(c) reading address information indicating a position on the optical disk from data recorded on the optical disk so as to demodulate the address information into a predetermined synchronizing signal;
(d) detecting a displacement between a phase of said sector synchronizing signal and a phase of said synchronizing signal; and
(e) controlling a data-writing upon performing an additional recording to the optical disk by controlling a revolution of the optical disk dynamically according to said displacement.
2. The method as claimed in claim 1, further comprising increasing a servo response dynamically to a motor revolving the optical disk, when said displacement surpasses a predetermined value.
3. The optical disk method as claimed in claim 2, further comprising decreasing said increased servo response back to a previous degree thereof, when said displacement becomes lower than a predetermined reference value.
4. The optical disk method as claimed in claim 2, further comprising decreasing said increased servo response back to a previous degree thereof, when a predetermined period has elapsed since said servo response was increased in step (e).
5. The optical disk method as claimed in claim 2, further comprising decreasing said increased servo response back to the previous degree thereof, when a predetermined amount of data has been recorded to the optical disk since said servo response was increased in step (e).
6. The optical disk method as claimed in claim 1, further comprising increasing a servo response dynamically to a motor revolving the optical disk, when said displacement surpasses the displacement detected last time by step (d).
7. The optical disk method as claimed in claim 6, further comprising decreasing said increased servo response back to a previous degree thereof, when said displacement becomes lower than a predetermined reference value.
8. The optical disk method as claimed in claim 6, further comprising decreasing said increased servo response back to a previous degree thereof, when a predetermined period has elapsed since said servo response was increased in step (e).
9. The optical disk method as claimed in claim 6, further comprising decreasing said increased servo response back to the previous degree thereof, when a predetermined amount of data has been recorded to the optical disk since said servo response was increased in step (e).
10. An optical disk method recording information on a recordable optical disk including address information indicating a position of a part of the optical disk having not recorded any data yet, and reproducing information from the optical disk, the method comprising:
a reference clock signal generating step generating a data-writing reference clock signal used to obtain a data-writing timing upon recording data to the optical disk;
a synchronizing signal generating step generating a predetermined sector synchronizing signal from said data-writing reference clock signal;
a data demodulating step reading address information indicating a position on the optical disk from data recorded on the optical disk so as to demodulate the address information into a predetermined synchronizing signal;
a displacement detecting step detecting a displacement between a phase of said sector synchronizing signal and a phase of said synchronizing signal; and
a data-writing control step controlling a data-writing upon performing an additional recording to the optical disk by controlling a speed of writing data to the optical disk according to said displacement.
11. The optical disk method as claimed in claim 10, further comprising performing the displacement detecting step again after decreasing said speed, when said displacement surpasses a predetermined value.
12. The optical disk method as claimed in claim 11, wherein said data-writing control step starts the additional recording to the optical disk, when said displacement becomes lower than a predetermined reference value.
13. The optical disk method as claimed in claim 10, further comprising performing the displacement detecting step again after decreasing said speed, when said displacement surpasses the displacement detected last time by said displacement detecting step.
14. The optical disk method as claimed in claim 13, wherein said data-writing control step starts the additional recording to the optical disk, when said displacement becomes lower than a predetermined reference value.