What is claimed and desired to be secured by Letters Patent is as follows:
1. A tamper indicating cap for use with a container wherein said cap is adapted to close a mouth to an interior of the container and wherein the container has container threads in close proximity to the mouth thereof; said cap comprising:
a) a top wall with a skirt extending substantially perpendicularly from said top wall and having mating threads thereon adapted to threadedly mate with said container threads;
b) said cap being adapted for sealing engagement with said container mouth; and
c) at least one tamper indicating tab initially integrally joined with said skirt by at least one frangible side connector that operably breaks and allows said tab move away from the original position of such tab relative to the skirt, when said cap is removed from the container; each of said tabs having an upper edge and being free of connection with said skirt entirely along said upper edge.
2. The cap according to claim 1, wherein:
a) each of said tabs is positioned at the base of said skirt.
3. The cap according to claim 2, wherein:
a) each of said tabs includes a lower lip that projects radially inward and is sized and shaped for substantially non-flexible engagement with a portion of the container so as to bias such a tab away from said skirt when said cap is removed from the closure.
4. The cap according in claim 2, wherein:
a) said tabs are originally joined to said skirt by first and second breakable connectors located on opposite sides of such a tab.
5. The cap according to claim 4 wherein for each said tab:
a) said first connector is comparatively stronger than said second connector, such that said second connector preferentially breaks first upon said cap being removed from the container and such that an associated tab first rotates outward about a generally vertical hinge formed by said first connector, when said cap is removed from the container.
6. The cap according to claim 1 in combination with the container and wherein:
a) said container includes a seating bead positioned to engage each tab lip when said cap is positioned fully on said container in a mouth closing orientation.
7. A tamper indicating apparatus including:
a) a container having an internal cavity that is closed except at a mouth thereof; said container including an external container thread in close proximity to said mouth and a seating bead;
b) a cap having a top wall with an under surface sized and shaped to seal said mouth when said cap is fully received on said container and a skirt depending from said top wall; said skirt having an internal mating thread that is sized, shaped and positioned to mate with said container thread and operably advance said cap onto said container and secure the cap relative to said container;
c) said skirt having at least one lower window located therein; and
d) said skirt also having at least one tamper indicating tab that is sized and shaped to initially fit into a respective window; each of said tabs having first and second opposed and frangible side connectors; each as said first and second side connectors breakably joining a respective tab to said skirt; each of said tabs having an upper surface that is free of connection to said skirt along an entire length thereof; each of said tabs also having a radially inward projecting lip that is sized and shaped to engage said seating bead when said cap is fully received on said container, such that when said cap is thereafter removed from said container, said lip hooks on said bead and biases an associated tab away from said skirt so as to break at least one of said first and second connectors and urge said tab out of a respective window.
8. The apparatus according to claim 7 wherein:
a) each of said first connectors is sized and shaped to preferentially break first before an associated second connector.
9. In a closure cap for a container having a tamper indicating tab; the improvement comprising:
a) said tamper tab being joined to a remainder of said cap by at least one side connector and having an upper surface that is completely free of and unjoined to the remainder of said cap so as to prevent said tab from being hinged to a remainder of said cap by said upper surface.
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. A method for compensating astigmatism in an optical storage system, wherein the storage system comprises an astigmatism compensator, comprising:
(a1) controlling the optical storage system focusing on an optical disc and proceeding track seeking;
(a2) adjusting a compensated values of the astigmatism compensator and recording the compensated value as a AS0_T;
(a3) measuring a peak-to-peak values of a main push pull signal in response to the AS0_T and recording the peak-to-peak value of the main push pull signal as a MPPpp_T;
(a4) comparing the MPPpp_T with a MPPpp_Max stored in a memory; and
(a5) setting a AS0_OPT equal to the AS0_T and setting the MPPpp_Max equal to the MPPpp_T if the MPPpp_Max is smaller than the MPPpp_T;
wherein steps of (a1) to (a5) are executed a number of times to acquire a first optimal compensated value from the AS0_OPT for the astigmatism compensator to compensate an astigmatism AS0.
2. The method for compensating astigmatism in an optical storage system according to claim 1 wherein the astigmatism compensator comprises an AS45 astigmatism compensator and an AS0 astigmatism compensator.
3. The method for compensating astigmatism in an optical storage system according to claim 2 further comprising:
(b1) controlling the optical storage system focusing on the optical disc;
(b2) adjusting the compensated value of the astigmatism compensator and recording the compensated value as a AS_T;
(b3) measuring a peak-to-peak value of a focusing error signal in response to the AS_T and recording the peak-to-peak value of the focusing error signal as a FEpp_T;
(b4) comparing the FEpp_T with a FEpp_Min stored in the memory; and
(b5) setting a AS45_OPT equal to the AS_T and setting the FFpp_Min equal to the FEpp_T if the FEpp_Min is larger than the FEpp_T;
wherein steps of (b1) to (b5) are executed a number of times to acquire a second optimal compensated value from the AS45_OPT for the astigmatism compensator to compensate an astigmatism AS45.
4. An apparatus for compensating astigmatism in an optical storage system, comprising:
a control unit capable of adjusting a compensated values;
an astigmatism compensator, connected to the control unit for compensating astigmatism in response to the compensated values;
an optical pickup head, including a photo detector which generating a detector signal;
an operation unit, connected to the optical pickup head for receiving the detector signal and generating a main push pull signal;
a peak-to-peak value detector, connected to the operation unit for detecting a peak-to-peak values of the main push pull signal in response to the compensated values;
a memory capable of recording a first peak-to-peak value and a first optimal compensated value;
a logic comparison unit, connected to the peak-to-peak value detector and the memory, capable of receiving and comparing the peak-to-peak values of the main push pull signal and the first peak-to-peak value and setting the first optimal compensated value equal to the adjusted compensated value and setting the first peak-to-peak value equal to the peak-to-peak value of the main push pull signal if the first peak-to-peak value is smaller than the peak-to-peak signal of the main push pull signal;
wherein the control unit is connected to the logic comparison unit and is capable of adjusting the compensated value a number of time and then providing the first optimal compensated value to the astigmatism compensator for compensating an astigmatism AS0 of the astigmatism compensator.
5. The apparatus according to claim 4 wherein the astigmatism compensator comprises an A45 astigmatism compensator and an A0 astigmatism compensator.
6. The apparatus according to claim 5 wherein the apparatus further comprises:
the control unit capable of adjusting the compensated value;
the operation unit capable of generating a focusing error signal;
the peak-to-peak value detector capable of detecting a peak-to-peak value of the focusing error signal in response to the compensated value;
the memory capable of recording a second peak-to-peak value and a second optimal compensated value; and
the logic comparison unit, connected to the peak-to-peak value detector and the memory, capable of receiving and comparing the peak-to-peak value of the focusing error signal and the second peak-to-peak value and setting the second optimal compensated value equal to the adjusted compensated value and setting the second peak-to-peak value equal to the peak-to-peak value of the focusing error signal if the second peak-to-peak value is larger than the peak-to-peak signal of the focusing error signal;
wherein the control unit is connected to the logic comparison unit and is capable of adjusting the compensated value a number of time and then providing the second optimal compensated value to the astigmatism compensator for compensating an astigmatism AS45 of the astigmatism compensator.