1. A system comprising:
an athletic performance module configured to receive athletic activity data from a wirelessly-connected sensor worn on an appendage of a first user, wherein the first user is performing athletic activities at a first location; and
a challenge module configured to:
receive information specifying a challenge, wherein the challenge includes a competition between the first user, and a second user performing athletic activities at a second location;
determine, from the received athletic activity data, a first amount of athletic activity performed by the first user;
receive data from a second sensor indicating a second amount of athletic activity performed by the second user; and
determine whether the challenge has been met by the first user based on a comparison of the first amount of athletic activity performed by the first user and a second amount of athletic activity performed by the second user.
2. The system of claim 1, wherein the challenge is received from the second user.
3. The system of claim 2, wherein the first user is prompted, by the challenge module, to accept the challenge.
4. The system of claim 1, wherein the challenge comprises travelling a predetermined distance in a shortest amount of time.
5. The system of claim 1, wherein the challenge comprises travelling as far as possible within a predetermined time.
6. The system of claim 1, wherein the challenge comprises travelling a predetermined distance in a predetermined time.
7. The system of claim 1, wherein the challenge is defined in terms of a common unit used for multiple types of athletic activities.
8. The system of claim 1, wherein the challenge is specified in terms of a unit in which the athletic activity is measured.
9. The system of claim 1, wherein the challenge includes a competition between a first athletic training facility and a second athletic training facility.
10. The system of claim 9, wherein the first and second athletic training facilities correspond to an athletic training facility provider.
11. A method comprising:
receiving a prompt inviting a first user to participate in a challenge, wherein the challenge includes a competition between the first user performing athletic activities at a first location and a second user performing athletic activities at a second location;
determining an amount of athletic activity performed by the first user based on sensor data received from a sensor worn on an appendage of the first user; and
receiving data from a second sensor indicative of an amount of athletic activity performed by the second user; and
determining whether the challenge has been met by the first user based on a comparison of the amount of athletic activity performed using the first user to the amount of athletic activity performed by the second user.
12. The method of claim 11, wherein the sensor worn on the appendage of the first user comprises a location-determining sensor.
13. The method of claim 11, wherein the sensor worn on the appendage of the first user comprises an accelerometer.
14. The method of claim 11, wherein the challenge is received from the second user.
15. The method of claim 11, wherein the challenge is defined in terms of a common unit used for multiple types of athletic activities.
16. The method of claim 11, wherein the challenge is specified in terms of a unit in which the athletic activity is measured.
17. The method of claim 11, wherein the challenge includes a competition between a first athletic training facility and a second athletic training facility.
18. The method of claim 17, wherein the first and second athletic training facilities correspond to an athletic training facility provider.
19. The method of claim 11, wherein the challenge includes a competition between a first athletic training facility provider and a second athletic training facility provider.
20. The method of claim 17, wherein the first athletic training facility provider includes multiple athletic training facilities.
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 solar photovoltaic energy conversion apparatus, comprising:
a substrate, said substrate being selected from the group consisting of glass, quartz and mono-crystalline aluminum oxide;
a transparent conductive oxide thin film layer being formed on said substrate;
a p-type transparent conductive oxide layer being formed on said transparent conductive oxide thin film layer;
a plurality of protrusions with fixed spacing being formed on said p-type transparent conductive oxide layer, wherein every protrusion containing a separated p-type silicon semiconductor layer formed under a separated n-type silicon semiconductor layer;
a n-type transparent conductive oxide layer being formed over and covering said protrusions and said p-type transparent conductive oxide layer, wherein said p-type transparent conductive oxide layer directly contacting said n-type transparent conductive oxide layer so that a plurality of transparent p-n junctions formed between said p-type transparent conductive oxide layer and said n-type transparent conductive oxide layer; and
an anti-reflective layer being formed on said n-type transparent conductive oxide layer to form the solar photovoltaic energy conversion apparatus.
2. The apparatus according to claim 1, wherein said separated p-type transparent conductive oxide layer is selected from the group consisting of copper oxide nitrogen doped zinc oxide, nitrogen doped aluminum zinc oxide, nickel oxide, iron oxide, copper aluminum oxide, copper gallium oxide, and strontium copper oxide.
3. The apparatus according to claim 1, wherein said every protrusion containing a separated p-type silicon semiconductor layer formed under a separated n-type silicon semiconductor layer further comprises every protrusion containing a separated n-type silicon semiconductor layer formed under a separated p-type silicon semiconductor layer.
4. The apparatus according to claim 1, wherein said separated p-type silicon semiconductor layer or said separated n-type silicon semiconductor layer is selected from the group consisting of mono-crystalline silicon, polycrystalline silicon, and non-crystalline silicon.
5. The apparatus according to claim 1, wherein said separated n-type transparent conductive oxide layer is selected from the group consisting of indium oxide, tin oxide, zinc oxide, cadmium oxide, indium tin oxide, indium zinc oxide, aluminum zinc oxide, gallium zinc oxide, aluminum doped magnesium zinc oxide, and gallium doped magnesium zinc oxide.
6. A solar photovoltaic energy conversion apparatus, comprising:
a substrate, said substrate being selected from the group consisting of glass, quartz and mono-crystalline aluminum oxide;
a transparent conductive oxide thin film layer being formed on said substrate;
a n-type transparent conductive oxide layer being formed on said transparent conductive oxide thin film layer;
a plurality of protrusions with fixed spacing being formed on said n-type transparent conductive oxide layer, wherein every protrusion containing a separated n-type silicon semiconductor layer formed under a separated p-type silicon semiconductor layer;
a p-type transparent conductive oxide layer being formed over and covering said protrusions and said n-type transparent conductive oxide layer, wherein said n-type transparent conductive oxide layer directly contacting said p-type transparent conductive oxide layer so that a plurality of transparent p-n junctions formed between said n-type transparent conductive oxide layer and said p-type transparent conductive oxide layer; and
an anti-reflective layer being formed on said p-type transparent conductive oxide layer to form the solar photovoltaic energy conversion apparatus.
7. The apparatus according to claim 6, wherein said separated n-type transparent conductive oxide layer is selected from the group consisting of indium oxide, tin oxide, zinc oxide, cadmium oxide, indium tin oxide, indium zinc oxide, aluminum zinc oxide, gallium zinc oxide, aluminum doped magnesium zinc oxide, and gallium doped magnesium zinc oxide.
8. The apparatus according to claim 6, wherein said every protrusion containing a separated n-type silicon semiconductor layer formed under a separated p-type silicon semiconductor layer further comprises every protrusion containing a separated p-type silicon semiconductor layer formed under a separated n-type silicon semiconductor layer.
9. The apparatus according to claim 6, wherein said separated n-type silicon semiconductor layer or said separated p-type silicon semiconductor layer is selected from the group consisting of mono-crystalline silicon, polycrystalline silicon, and non-crystalline silicon.
10. The apparatus according to claim 6, wherein said separated p-type transparent conductive oxide layer is selected from the group consisting of copper oxide, nitrogen doped zinc oxide, nitrogen doped aluminum zinc oxide, nickel oxide, iron oxide, copper aluminum oxide, copper gallium oxide, and strontium copper oxide.