All The Claims

1. An etching device for removing stubs of plated through holes of a substrate, the device comprising:
a lower plate defining a plurality of first through holes, the first through holes running through two opposite surfaces of the lower plate;
an upper plate configured for supporting the substrate, the upper plate being above the lower plate and defining a plurality of second through holes aligned with the respective first through holes, the first through holes running through two opposite surfaces of the lower plate, a diameter of the second through hole being larger than that of the first through hole;
a connecting mechanism connecting the upper plate and the lower plate together; and
a spraying mechanism comprising a pump and a plurality of spray tubes, the pump being configured for supplying an etchant to the spray tubes, a diameter of the spray tube being less than that of the second through hole, the spray tubes each extending through a corresponding first through hole and a corresponding second through hole, each of the spray tubes including a protruding portion protruding beyond the upper plate and configured for extending into the stub, the protruding portion defining at least one spraying opening, the at least one spraying opening being configured for spraying the etchant to the stub of the substrate.
2. The etching device of claim 1, wherein the diameter of the second through hole is in the range from 108% to 115% of the diameter of the first through hole.
3. The etching device of claim 1, wherein a diameter of the spray tube is equal to or larger than that of the first through hole.
4. The etching device of claim 1, wherein the spray tubes seal the respective first through holes.
5. The etching device of claim 1, wherein the lower plate includes a main body and an annular protrusion extending along a periphery of the main body, the main body comprising a first supporting surface, a first back surface, and at least one drainage hole exposed at both of the first supporting and the first back surfaces, the annular protrusion extending from the first supporting surface toward the upper plate, a retaining space being bounded by the annular protrusion and the first supporting surface, the at least one drainage hole being in communication with the retaining space.
6. The etching device of claim 5, wherein the upper plate comprises a second supporting surface and a second back surface opposite to the main body, the upper plate defines a number of threaded holes exposed at both of the second supporting and the second back surfaces, the connecting mechanism comprises a number of fasteners and a number of threaded retainers, the fasteners each are fixed on the main body and extend through a corresponding threaded hole, there are two threaded retainers screwed on each of the fasteners, one in contact with the second supporting surface, the other in contact with the second back surface.
7. The etching device of claim 5, wherein the connecting mechanism comprises at least one adhesive tape positioned between the annular protrusion and the periphery of the upper plate.
8. The etching device of claim 1, wherein the protruding portion comprises a side wall and a top wall connected with the side wall, the at least one spraying opening is defined in the side wall adjacent to the top wall.
9. The etching device of claim 8, wherein the at least one spraying opening comprises a number of spraying openings equiangularly arranged about a central body axis of the protruding portion.
10. The etching device of claim 8, wherein the at least one spraying opening comprises two spraying openings opposite to each other.
11. The etching device of claim 8, wherein the at least one spraying opening comprises a C-shaped spraying opening.
12. An etching device for removing stubs of plated through holes of a substrate, the device comprising:
a lower plate comprising a main body and an annular protrusion connected with a peripheral portion of the main body, the main body defining a plurality of first through holes, the first through holes running through two opposite surfaces of the main body;
an upper plate configured for supporting the substrate, the upper plate being above the main body and defining a plurality of second through holes aligned with the respective first through holes, the first through holes running through two opposite surfaces of the lower plate, a diameter of the second through hole being larger than that of the first through hole;
a connecting mechanism connecting the upper plate and the lower plate together; and
a spraying mechanism comprising a pump and a plurality of spray tubes, the pump being configured for supplying an etchant to the spray tubes, a diameter of the spray tube being less than that of the second through hole, the spray tubes each extending through a corresponding first through hole and a corresponding second through hole, the spray tubes sealing the respective first through holes, each of the spray tubes including a protruding portion protruding beyond the upper plate and configured for extending into the stub, the protruding portion defining at least one spraying opening, the at least one spraying opening being configured for spraying the etchant to the stub of the substrate.
13. The etching device of claim 12, wherein a diameter of the spray tube is equal to or larger than that of the first through hole.
14. The etching device of claim 12, wherein the spray tubes seal the respective first through holes.
15. The etching device of claim 12, wherein the protruding portion comprises a side wall and a top wall connected with the side wall, the at least one spraying opening is defined in the side wall adjacent to the top wall.
16. The etching device of claim 15, wherein the at least one spraying opening comprises a number of spraying openings equiangularly arranged about a central body axis of the protruding portion.
17. The etching device of claim 15, wherein the at least one spraying opening comprises two spraying openings opposite to each other.
18. The etching device of claim 15, wherein the at least one spraying opening comprises a C-shaped spraying opening.

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 of using a treatment balloon comprising:
positioning an immobilizing balloon proximally to a treatment region, wherein when inflated, said immobilizing balloon maintains its position;
inflating said immobilizing balloon;
positioning said treatment balloon in a treatment region wherein said step of positioning is performed relative to said immobilizing balloon;
inflating said treatment balloon; and
rotating said treatment balloon relative to said immobilizing balloon.
2. The method of claim 1 wherein said immobilizing balloon has protrusions designed to enhance the ability of said immobilizing balloon to maintain its position.
3. The method of claim 1 wherein said treatment balloon imparts a radial force.
4. The method of claim 3 wherein said radial force is used in placing a stent.
5. The method of claim 3 wherein said radial force is used in angioplasty.
6. The method of claim 1 wherein said treatment balloon imparts an axial force.
7. The method of claim 6 wherein said axial force is not applied in a retrograde direction.
8. The method of claim 1 further comprising:
positioning an occlusion balloon; and
inflating said occlusion balloon.
9. The method of claim 1 wherein said treatment balloon has protrusions designed to increase the capability of said treatment balloon to shear away an occlusion.
10. The method of claim 1 wherein said occlusion balloon occludes a first end of said treatment region, and wherein said immobilizing balloon occludes a second end of said treatment region.
11. A catheter system comprising:
an immobilizing balloon, wherein when inflated, said immobilizing balloon maintains its position;
an immobilizing balloon positioning system configured to position said immobilizing balloon proximally to a treatment region;
a first inflation system configured to inflate said immobilizing balloon;
a treatment balloon;
a treatment balloon positioning system configured to position said treatment balloon, relative to said immobilizing balloon, in a treatment region; and
a second inflation system configured to inflate said treatment balloon, wherein said treatment balloon is configured to rotate relative to said immobilizing balloon.
12. The catheter system of claim 11 wherein said immobilizing balloon has protrusions designed to enhance the ability of said immobilizing balloon to maintain its position.
13. The catheter system of claim 11 wherein said treatment balloon is configured to impart a radial force.
14. The catheter system of claim 13 wherein said radial force is used in placing a stent.
15. The catheter system of claim 13 wherein said radial force is used in angioplasty.
16. The catheter system of claim 11 wherein said treatment balloon is configured to impart an axial force.
17. The catheter system of claim 16 wherein said axial force is not applied in a retrograde direction.
18. The catheter system of claim 11 further comprising:
an occlusion balloon;
an occlusion balloon positioning system configured to position said occlusion balloon such that said treatment balloon is between said immobilizing balloon and said occlusion balloon; and
a third inflation system configured to inflate said occlusion balloon.
19. The catheter system of claim 11 wherein said treatment balloon has protrusions designed to increase the capability of said treatment balloon to shear away an occlusion.
20. The catheter system of claim 18 wherein said occlusion balloon is adapted to occlude a first end of said treatment region, and wherein said immobilizing balloon is adapted to occlude a second end of said treatment region.

1. A photo classifying method for managing a plurality of photos stored in a digital photo frame (DPF), the method comprising:
recording a creation date of each photo, a current date of the DPF, and presetting at least one reference browsing rate by the DPF;
calculating a total browsing time of each photo;
calculating a browsing rate of each photo by dividing the total browsing time of each photo by the difference between a creation date of each photo and a current date of the DPF;
comparing the browsing rate of each photo with the at least one reference browsing rate and classifying each photo with a corresponding photo grade according to the comparison; and
recording the corresponding photo grade in a property information of each photo.
2. The method as described in claim 1, wherein the at least one reference browsing rate comprises a first reference browsing rate and a second reference browsing rate are preset in the DPF, the first reference browsing rate is greater than the second reference browsing rate.
3. The method as described in claim 2, wherein for each photo, if the current browsing rate is greater than or equal to the first reference browsing rate, the corresponding photo grade is a first grade.
4. The method as described in claim 2, wherein for each photo, if the current browsing rate is greater than or equal to the second reference browsing rate and lower than the first reference browsing rate, the corresponding photo grade is a second grade.
5. The method as described in claim 2, wherein for each photo, if the current browsing rate is greater than zero and lower than the second reference browsing rate, the corresponding photo grade is a third grade.
6. The method as described in claim 2, wherein for each photo, if the current browsing rate is equal to zero, the corresponding photo grade is a fourth grade.
7. The method as described in claim 1, wherein the property information of each photo comprises a term for identifying the photo grade.
8. A photo classifying system for managing a plurality of photos stored in a digital photo frame (DPF), the system comprising:
a parameter presetting unit configured to set and record a creation date of each photo, a current date of the DPF, and at least one reference browsing rate;
a browsing time calculating unit for calculating total browsing time of each photo;
a browsing rate calculating unit configured to calculate a browsing rate of each photo by dividing the total browsing time of each photo by the difference between the creation date of each photo and the current date of the DPF; and
a photo grade classifying unit configured to classify each photo with a corresponding photo grade by comparing the calculated browsing rate with the at least one reference browsing rate.
9. The system as described in claim 8, wherein the at least one reference browsing rate comprises a first reference browsing rate preset in the DPF and a second reference browsing rate preset in the DPF, the first reference browsing rate is greater than the second reference browsing rate.
10. The system as described in claim 9, wherein for each photo, if the current browsing rate is greater than the first reference browsing rate, the corresponding photo grade is a first grade.
11. The system as described in claim 9, wherein for each photo, if the current browsing rate is greater than or equal to the second reference browsing rate and lower than the first reference browsing rate, the corresponding photo grade is a second grade.
12. The system as described in claim 9, wherein for each photo, if the current browsing rate is greater than zero and lower than the second reference browsing rate, the corresponding photo grade is a third grade.
13. The system as described in claim 9, wherein for each photo, if the current browsing rate is equal to zero, the corresponding photo grade is a fourth grade.
14. The system as described in claim 8, wherein a term is added in a photo property information for identifying the photo grade.

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:
displaying a first plurality of symbols on a gaming machine;
awarding a first prize in response to the first plurality of symbols comprising a winning group of symbols;
displaying a second plurality of symbols on the gaming machine;
awarding a second prize in response to the second plurality of symbols comprising a winning group of symbols; and
triggering a feature of the gaming machine in response to determining that the first plurality of symbols and the second plurality of symbols combined include at least a threshold count of a predetermined symbol.
2. The method of claim 1, further comprising
counting how many of the predetermined symbol are present in the first plurality of symbols; and
counting how many of the predetermined symbol are present the second plurality of symbols.
3. The method of claim 1, further comprising:
spinning a plurality of symbol carrying reels of the gaming machine to obtain the first plurality of symbols; and
spinning at least a subset of the plurality of symbol carrying reels to obtain the second plurality of symbols.
4. The method of claim 3, wherein:
said awarding the first prize comprises awarding the first prize in response to determining that the first plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine; and
said awarding a second prize comprises awarding the second prize in response to determining that the second plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine.
5. The method of claim 3, wherein:
said awarding a first prize comprises awarding the first prize in response to determining that the first plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine; and
said spinning at least the subset of symbol carrying reels comprises spinning at least the subset of symbol carrying reels regardless of whether the first plurality of symbols comprises a winning group of symbols.
6. The method of claim 1, further comprising awarding a free series of games in response to triggering the feature.
7. The method of claim 1, further comprising displaying a screen animation in response to triggering the feature.
8. The method of claim 1, wherein:
displaying the first plurality of symbols comprises displaying a first video simulation of spinning reels upon a screen of the gaming machine; and
displaying the second plurality of symbols comprises displaying a second video simulation of spinning reels upon the screen.
9. A non-transitory computer readable medium, comprising a program, that in response to being executed, causes a gaming machine to:
display a first plurality of symbols;
award a first prize in response to the first plurality of symbols comprising a winning group of symbols;
display a second plurality of symbols;
award a second prize in response to the second plurality of symbols comprising a winning group of symbols; and
trigger a feature of the gaming machine in response to determining that the first plurality of symbols and the second plurality of symbols combined include at least a threshold count of a predetermined symbol.
10. The non-transitory computer readable medium of claim 9, wherein the program, in response to being executed, further causes a gaming machine to:
count how many of the predetermined symbol are present in the first plurality of symbols; and
count how many of the predetermined symbol are present the second plurality of symbols.
11. The non-transitory computer readable medium of claim 9, wherein the program, in response to being executed, further causes a gaming machine to:
spin a plurality of symbol carrying reels of the gaming machine to obtain the first plurality of symbols; and
spin at least a subset of the plurality of symbol carrying reels to obtain the second plurality of symbols.
12. The non-transitory computer readable medium of claim 11, wherein the program, in response to being executed, further causes a gaming machine to:
award the first prize in response to determining that the first plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine; and
award the second prize in response to determining that the second plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine.
13. The non-transitory computer readable medium of claim 11, wherein the program, in response to being executed, further causes a gaming machine to:
award the first prize in response to determining that the first plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine; and
spin at least the subset of symbol carrying reels regardless of whether the first plurality of symbols comprises a winning group of symbols.
14. The non-transitory computer readable medium of claim 9, wherein the program, in response to being executed, further causes a gaming machine to award a free series of games in response to triggering the feature.
15. The non-transitory computer readable medium of claim 9, wherein the program, in response to being executed, further causes a gaming machine to display a screen animation in response to triggering the feature.
16. The non-transitory computer readable medium of claim 9, wherein the program, in response to being executed, further causes a gaming machine to:
display a first video simulation of spinning reels upon a screen of the gaming machine to obtain the first plurality of symbols; and
display a second video simulation of spinning reels upon the screen to obtain the second plurality of symbols.
17. A game machine, comprising
a display configured to display a plurality of symbols;
a user interface configured to receive user input;
a validation device configured to indicate receipt of a sufficient wager; and
a control system configured to cause the display to present a first plurality of symbols, award a first prize in response to the first plurality of symbols comprising a winning group of symbols, to cause the display to present a second plurality of symbols, award a second prize in response to the second plurality of symbols comprising a winning group of symbols, and trigger a feature of the gaming machine in response to determining that the first plurality of symbols and the second plurality of symbols combined include at least a threshold count of a predetermined symbol.
18. The game machine of claim 17, wherein the control system is further configured to cause a plurality of symbol carrying reels of the display to spin in order to obtain the first plurality of symbols, and cause at least a subset of the plurality of symbol carrying reels to spin in order to obtain the second plurality of symbols.
19. The game machine of claim 18, wherein the control system is further configured to award the first prize in response to determining that the first plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine, and award the second prize in response to determining that the second plurality of symbols comprises a winning group of symbols in alignment with a pay line of the gaming machine.
20. The game machine of claim 18, wherein the display is configured to present spinning of the plurality of symbol carrying reels as a screen animation.