1. A head slider for a magnetic disk drive, said slider comprising a leading edge and a trailing edge of an air bearing surface, said head slider further comprising:
a first etch depth formed on said air bearing surface of said head slider, wherein said first etch depth is near a leading edge and a perimeter of said first etch depth is separated from said leading edge; and
a second etch depth formed on said air bearing surface of said head slider wherein said first etch depth is deeper than said second etch depth, wherein said second etch depth extends from said trailing edge, and wherein said first etch depth is adjacent said second etch depth along a centerline of said head slider, wherein said first etch depth is from said air bearing surface and said second etch depth is from said air bearing surface, wherein said centerline divides said head slider into a leading side of said air bearing surface and a trailing side of said air bearing surface and wherein said second etch depth is completely on said trailing side of said air bearing surface and wherein said first etch depth is completely on said leading side of said air bearing surface.
2. The head slider as described in claim 1 wherein said second recess is approximately one micrometer in depth with respect to a bottom of said air bearing surface of said head slider.
3. The head slider as described in claim 1 wherein said first etch depth is approximately two or three micrometers in depth with respect to a bottom of said air bearing surface of said head slider.
4. The head slider as described in claim 1 wherein said second etch depth is between 1 and 1.5 micrometers in depth and said first etch depth is between 2 and 3.5 micrometers in depth.
5. The head slider as described in claim 1 wherein said head slider is for a mobile disk drive assembly.
6. A disk drive assembly comprising:
a rotatable magnetic disk; and
a head gimbal assembly coupled to an actuator, said head gimbal assembly comprising a head slider, said slider comprising:
an air bearing surface comprising a leading edge and a trailing edge;
a first etch depth formed on said air bearing surface of said head slider, wherein said first etch depth is near a leading edge and a perimeter of said first etch depth is separated from said leading edge; and
a second etch depth formed on said air bearing surface of said head slider wherein said first etch depth is deeper than said second etch depth, wherein said second etch depth extends from said trailing edge, and wherein said first etch depth is adjacent said second etch depth along a centerline of said head slider, wherein said first etch depth is from said air bearing surface and said second etch depth is from said air bearing surface, wherein said centerline bisects said head slider into a leading side of said air bearing surface and a trailing side of said air bearing surface and wherein said second etch depth is completely on said trailing side of said air bearing surface and wherein said first etch depth is completely on said leading side of said air bearing surface.
7. The disk drive assembly as described in claim 6 wherein said second recess is approximately one micrometer in depth with respect to a bottom of said air bearing surface of said head slider.
8. The disk drive assembly as described in claim 6 wherein said first etch depth is approximately two or three micrometers in depth with respect to a bottom of said air bearing surface of said head slider.
9. The disk drive assembly as described in claim 6 wherein said second etch depth is between 1 and 1.5 micrometers in depth and said first etch depth is between 2 and 3.5 micrometers in depth.
10. The disk drive assembly as described in claim 6 wherein a depth of said first etch depth and a depth of said second etch depth are dependent on a rotational speed and diameter of said magnetic disk or disk linear velocity, wherein said depths are smaller with a lower disk velocity.
11. A head gimbal assembly comprising a head slider for reducing fly height loss at altitude and for increasing shock protection, said head slider comprising:
an air bearing surface comprising a leading edge and a trailing edge;
a first etch depth formed on said air bearing surface of said head slider, wherein said first etch depth is near said leading edge and a perimeter of said first etch depth is separated from said leading edge; and
a second etch depth formed on said air bearing surface of said head slider wherein said first etch depth is deeper than said second etch depth, wherein said second etch depth extends from said trailing edge, and wherein said first etch depth is adjacent said second etch depth along a centerline of said head slider, wherein said first etch depth is from said air bearing surface and said second etch depth is from said air bearing surface, wherein said centerline bisects said head slider into a leading side of said air bearing surface and a trailing side of said air bearing surface and wherein said second etch depth is completely on said trailing side of said air bearing surface and wherein said first etch depth is completely on said leading side of said air bearing surface.
12. The head gimbal assembly as described in claim 11 wherein said second recess is approximately one micrometer in depth with respect to a bottom of said air bearing surface of said head slider.
13. The head gimbal assembly as described in claim 11 wherein said first etch depth is approximately two or three micrometers in depth with respect to a bottom of said air bearing surface of said head slider.
14. The head gimbal assembly as described in claim 11 wherein said second etch depth is between 1 and 1.5 micrometers in depth and said first etch depth is between 2 and 3.5 micrometers in depth.
15. The head gimbal assembly as described in claim 11 wherein a depth of said first etch depth and a depth of said second etch depth are dependent on a rotational speed and diameter of a magnetic disk or a disk linear velocity, wherein said depths are smaller at a lower disk velocity.
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 comprising:
segmenting a plurality of potential customers of a product or service into a plurality of clusters organized over a plurality of dimensions by one or more attributes of the potential customers where no data exists regarding the potential customers as to purchase of the product or service, each potential customer segmented into no more than one cluster;
selecting a plurality of initial clusters among the plurality of clusters organized over the plurality of dimensions;
determining a success factor of each initial cluster;
for the initial cluster having a highest success factor, selecting one or more subsequent clusters among the plurality of clusters located near the initial cluster having the highest success factor;
determining a success factor of each subsequent cluster; and,
for the subsequent cluster having a highest success factor, soliciting the potential customers segmented into the subsequent cluster having the highest success factor as most likely customers of the product or service.
2. The method of claim 1, further comprising, after determining the success factor of each subsequent cluster:
a) for the subsequent cluster having the highest success factor, selecting one or more new subsequent clusters among the plurality of clusters located near the subsequent cluster having the highest success factor;
b) determining a success factor of each new subsequent cluster;
c) where the success factor of a new subsequent cluster is greater than the success factor of the subsequent cluster, repeating at a) with respect to the new subsequent cluster; and,
d) otherwise, selecting the subsequent cluster having the highest success factor as to which the potential customers segmented thereinto are solicited as most likely customers of the product or service.
3. The method of claim 1, wherein the potential customers of the product or service are potential in that the product or service is new, such that none of the potential customers has ever purchased the product or service, and no other customers exist as to purchase data of the product or service.
4. The method of claim 1, wherein segmenting the plurality of potential customers into the plurality of clusters comprises employing a predetermined clustering algorithm.
5. The method of claim 1, wherein the plurality of dimensions is equal to two.
6. The method of claim 1, wherein selecting the plurality of initial clusters comprises selecting a plurality of points within the plurality of clusters that are substantially equidistant to one another.
7. The method of claim 6, wherein determining the success factor of each initial cluster comprises determining the success factor of a cluster containing a point.
8. The method of claim 1, wherein determining the success factor of each initial cluster comprises employing one or more approaches that center on the initial cluster.
9. The method of claim 1, wherein selecting the subsequent clusters located near the initial cluster having the highest success factor comprises selecting the subsequent clusters as neighboring clusters to the initial cluster having the highest success factor.
10. The method of claim 1, wherein determining the success factor of each subsequent cluster comprises employing one or more approaches that center on the subsequent cluster.
11. A method comprising:
a) segmenting a plurality of potential customers of a product or service into a plurality of clusters organized over a plurality of dimensions by one or more attributes of the potential customers where no data exists regarding the potential customers as to purchase of the product or service, each potential customer segmented into no more than one cluster;
b) selecting a plurality of initial clusters among the plurality of clusters organized over the plurality of dimensions;
c) determining a success factor of each initial cluster, the initial cluster having a highest success factor referred to as a standard cluster;
d) selecting one or more candidate clusters among the plurality of clusters located near the standard cluster;
e) determining a success factor of each candidate cluster;
f) where the success factor of a candidate cluster is higher than the success factor of the standard cluster,
selecting the candidate cluster having the success factor higher than the success factor of the standard cluster as a new standard cluster;
repeating at d) with respect to the new standard cluster;
g) otherwise, soliciting the potential customers segmented into the standard cluster as most likely customers of the product or service.
12. The method of claim 11, wherein the potential customers of the product or service are potential in that the product or service is new, such that none of the potential customers has ever purchased the product or service, and no other customers exist as to purchase data of the product or service.
13. The method of claim 11, wherein selecting the plurality of initial clusters comprises selecting a plurality of points within the plurality of initial clusters that are substantially equidistant to one another.
14. The method of claim 11, wherein determining the success factor of each initial cluster comprises employing one or more approaches that center on the initial cluster.
15. The method of claim 11, wherein selecting the candidate clusters located near the standard cluster comprises selecting the subsequent clusters as neighboring clusters to the standard cluster.
16. An article of manufacture having a tangible computer-readable medium on which a computer program is stored to perform a method comprising:
segmenting a plurality of potential customers of a product or service into a plurality of clusters organized over a plurality of dimensions by one or more attributes of the potential customers where no data exists regarding the potential customers as to purchase of the product or service, each potential customer segmented into no more than one cluster;
selecting a plurality of initial clusters among the plurality of clusters organized over the plurality of dimensions;
determining a success factor of each initial cluster;
for the initial cluster having a highest success factor, selecting one or more subsequent clusters among the plurality of clusters located near the initial cluster having the highest success factor;
determining a success factor of each subsequent cluster,
wherein, for the subsequent cluster having a highest success factor, the potential customers segmented into the subsequent cluster having the highest success factor are solicited as most likely customers of the product or service.
17. The article of manufacture of claim 16, wherein the potential customers of the product or service are potential in that the product or service is new, such that none of the potential customers has ever purchased the product or service, and no other customers exist as to purchase data of the product or service.
18. The article of manufacture of claim 16, wherein selecting the plurality of initial clusters comprises selecting a plurality of points within the plurality of initial clusters that are substantially equidistant to one another.
19. The article of manufacture of claim 16, wherein determining the success factor of each initial cluster comprises employing one or more approaches that center on the initial cluster.
20. The article of manufacture of claim 16, wherein selecting the subsequent clusters located near the initial cluster having the highest success factor comprises selecting the subsequent clusters as neighboring clusters to the initial cluster having the highest success factor.