1. An arrow tip engagement apparatus for operative positioning at a leading end of an arrow shaft, comprising:
a body, said body having a center axis and having a diameter determining an exterior circumference, said body extending from a first end to a second end;
said first end of said body adapted for an engagement with an arrowhead;
an elongated member extending from said second end of said body along said axis, said member extending a distance to a distal end of said member;
said member adapted for an operative engagement within an axial bore of an arrow shaft; and
a narrowing of said exterior circumference of said body, said narrowing extending from a larger said exterior circumference at or adjacent to said first end, to a narrowed said exterior circumference a distance away from said first end toward said second end, whereby said elongated member is positionable to said operative engagement with said axial bore of said arrow and said first end is engageable with a said arrow head to position it at said leading end of said arrow.
2. The arrow tip engagement apparatus of claim 1, wherein said narrowing of said exterior circumference of said body, extending from a larger said exterior circumference at or adjacent to said first end, to a narrowed said exterior circumference, is comprised of a taper of said exterior circumference.
3. The arrow tip engagement apparatus of claim 1, additionally comprising:
said elongated member extending from said second end of said body along said axis, having a member circumference which is narrower than said exterior circumference of said body at said second end; and
said second end of said body adjacent said elongated member configured for a mating with said leading end of said arrow.
4. The arrow tip engagement apparatus of claim 2, additionally comprising:
said elongated member extending from said second end of said body along said axis, having a member circumference which is narrower than said exterior circumference of said body at said second end; and
said second end of said body adjacent said elongated member configured for a mating contact with said leading end of said arrow.
5. The arrow tip engagement apparatus of claim 1 wherein said first end of said body adapted for an engagement with an arrowhead comprises:
an axial cavity formed in said first end of said body along said axis, said axial cavity defined by a sidewall; and
a portion of said sidewall having threads formed therein, said threads being formed complimentary to threads positioned upon threaded shaft projecting from said arrowhead.
6. The arrow tip engagement apparatus of claim 2 wherein said first end of said body adapted for an engagement with an arrowhead comprises:
an axial cavity formed in said first end of said body along said axis, said axial cavity defined by a sidewall; and
a portion of said sidewall having threads formed therein, said threads being formed complimentary to threads positioned upon threaded shaft projecting from said arrowhead.
7. The arrow tip engagement apparatus of claim 3 wherein said first end of said body adapted for an engagement with an arrowhead comprises:
an axial cavity formed in said first end of said body along said axis, said axial cavity defined by a sidewall; and
a portion of said sidewall having threads formed therein, said threads being formed complimentary to threads positioned upon threaded shaft projecting from said arrowhead.
8. The arrow tip engagement apparatus of claim 4 wherein said first end of said body adapted for an engagement with an arrowhead comprises:
an axial cavity formed in said first end of said body along said axis, said axial cavity defined by a sidewall; and
a portion of said sidewall having threads formed therein, said threads being formed complimentary to threads positioned upon threaded shaft projecting from said arrowhead.
9. The apparatus of claim 1, additionally comprising:
said distance of said elongated member being between 1 to 4 times a body length extending between said first end and said second end of said body; and
said member in said operative engagement forming a combination structure in areas of said member contacting said sidewall of said arrow shaft, said combination structure providing means for reinforcing said surrounding wall at said leading edge of said arrow shaft.
10. The apparatus of claim 2 additionally comprising:
a shoulder portion extending a length between said first end of said body and said narrowest point of said taper;
said shoulder portion having a diameter substantially equal to a diameter of said arrow shaft in said cooperative engagement; and
said shoulder portion defining a support surface for said arrow for a placement upon an arrow rest of a bow, said support surface being forward of said leading end of said arrow.
11. The apparatus of claim 8 additionally comprising:
a shoulder portion extending a length between said first end of said body and said narrowest point of said taper;
said shoulder portion having a diameter substantially equal to a diameter of said arrow shaft in said cooperative engagement; and
said shoulder portion defining a support surface for said arrow for a placement upon an arrow rest of a bow, said support surface being forward of said leading end of said arrow.
12. The apparatus of claim 9 additionally comprising:
a shoulder portion extending a length between said first end of said body and said narrowed said exterior circumference of said body;
said shoulder portion having a diameter substantially equal to a diameter of said arrow shaft; and
said shoulder portion providing a support surface for said arrow upon an arrow rest of a bow, said support surface being forward of said leading end of said arrow.
13. The apparatus of claim 7 additionally comprising:
a shoulder portion extending a length between said first end of said body and said narrowed said exterior circumference of said body;
said shoulder portion having a diameter substantially equal to a diameter of said arrow shaft; and
said shoulder portion providing a support surface for said arrow upon an arrow rest of a bow, said support surface being forward of said leading end of said arrow.
14. The apparatus of claim 1 additionally comprising:
said body at said second end having an exterior surface, said exterior surface having recesses formed therein, said recesses configured for an interaction with air surrounding said arrow during a flight of said arrow, said interaction exerting a spin to said arrow from said leading end.
15. The apparatus of claim 2 additionally comprising:
said body at said second end having an exterior surface, said exterior surface having recesses formed therein, said recesses configured for an interaction with air surrounding said arrow during a flight of said arrow, said interaction exerting a spin to said arrow from said leading end.
16. The apparatus of claim 3 additionally comprising:
said body at said second end having an exterior surface, said exterior surface having recesses formed therein, said recesses configured for an interaction with air surrounding said arrow during a flight of said arrow, said interaction exerting a spin to said arrow from said leading end.
17. The apparatus of claim 7 additionally comprising:
said body at said second end having an exterior surface, said exterior surface having recesses formed therein, said recesses configured for an interaction with air surrounding said arrow during a flight of said arrow, said interaction exerting a spin to said arrow from said leading end.
18. The apparatus of claim 11 additionally comprising:
said body at said second end having an exterior surface, said exterior surface having recesses formed therein, said recesses configured for an interaction with air surrounding said arrow during a flight of said arrow, said interaction exerting a spin to said arrow from said leading end.
19. The apparatus of claim 14 additionally comprising:
said body at said second end having an exterior surface, said exterior surface having recesses formed therein, said recesses configured for an interaction with air surrounding said arrow during a flight of said arrow, said interaction exerting a spin to said arrow from said leading end.
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 multisensory change detection system comprising:
a communication module to receive a first set of signals from a first combination of sensors in a plurality of sensors and receive a second set of signals from a second combination of sensors in the plurality of sensors; and
a processing module to:
determine a first distribution for the first set of signals and a second distribution for the second set of signals;
estimate a divergence between the first distribution and the second distribution based at least in part on a count of the first combination of sensors, a count of the second combination of sensors, a count of the plurality of sensors, distances from a plurality of signals in the second set of signals to a first plurality of nearest neighbor signals in the first set of signals and distances from a plurality of signals in the second set of signals to a second plurality of nearest neighbor signals in the second set of signals; and
determine whether the divergence exceeds a threshold.
2. The system of claim 1, wherein the processing module is further to generate an alert in response to determining the divergence exceeds the threshold.
3. The system of claim 1, wherein the first plurality of nearest neighbor signals and the second plurality of nearest neighbor signals include fewer signals than the first set of signals and the second set of signals respectively.
4. The system of claim 1, wherein the divergence is estimated using distances from a plurality of signals in the first set of signals to a third plurality of nearest neighbor signals in the first set of signals and a fourth plurality of nearest neighbor signals in the second set of signals.
5. The system of claim 1, wherein the first combination of sensors and the second combination of sensors are the same.
6. The system of claim 1, wherein the second set of signals are received immediately preceding the first set of signals.
7. The system of claim 1, wherein to estimate the divergence, the processing module is further to estimate a number of additional bits required to code the first set of signals using a code based on the second distribution.
8. The system of claim 1, wherein the processing module is further to determine the threshold using a target false alarm rate.
9. The system of claim 8, wherein the processing module is to determine the target false alarm rate recursively using a ratio of false alarm rates to correct alarm rates.
10. The system of claim 1, wherein the second combination of sensors is selected by a user.
11. The system of claim 1, wherein the communication module is further to receive characteristic data from a third combination of sensors at a first period and a second period, the characteristic data representing sensor states;
wherein the processing module is further to analyze the first and second periods to determine a difference between the sensor states of the third combination of sensors at the first period and the second period; and
wherein the processing module is to use the determined difference to estimate the divergence.
12. The system of claim 11, wherein the sensor states includes at least one of a sensor location, a sensor angle, a sensor orientation, a sensor movement, or a sensor operational status.
13. The system of claim 1, wherein the communication module is further to receive characteristic data from the plurality of sensors at a first period and a second period, the characteristic data representing environmental states;
wherein the processing module is further to analyze the first and second periods to determine a difference between the environmental states of the plurality of sensors at the first period and the second period; and
wherein the processing module is to use the determined difference to estimate the divergence.
14. The system of claim 13, wherein the environmental states includes information about at least one of wind speed, temperature, heat index, humidity, movement, luminosity, signal strength, audio, video, chemical composition, or external device functionality.
15. The system of claim 1, wherein the first combination of sensors is selected by a user.
16. A method for multisensory change detection comprising:
receiving, at a device, a first set of signals from a first combination of sensors in a plurality of sensors;
receiving, at the device, a second set of signals from a second combination of sensors in the plurality of sensors;
determining, at the device, a first distribution for the first set of signals;
determining, at the device, a second distribution for the second set of signals;
estimating, at the device, a divergence between the first distribution and the second distribution based at least in part on the first combination of sensors, the second combination of sensors, a total count of the plurality of sensors, distances from a plurality of signals in the second set of signals to a first plurality of nearest neighbor signals in the first set of signals, and distances from a plurality of signals in the second set of signals to a second plurality of nearest neighbor signals in the second set of signals; and
determining, at the device, whether the divergence exceeds a threshold.
17. The method of claim 16, further comprising generating an alert in response to determining the divergence exceeds the threshold.
18. The method of claim 16, further comprising, determining the threshold using a target false alarm rate.
19. The method of claim 18, further comprising, determining the target false alarm rate recursively using a ratio of false alarm rates to correct alarm rates.
20. The method of claim 16, further comprising:
receiving characteristic data from a third combination of sensors at a first period and a second period, the characteristic data representing sensor states or environmental states; and
analyzing the first and second periods to determine a difference between the sensor states or the environmental states of the third combination of sensors at the first period and the second period; and
wherein estimating the divergence includes using the determined difference.
21. The method of claim 20, wherein the sensor states includes at least one of a sensor location, a sensor angle, a sensor orientation, a sensor movement, or a sensor operational status.
22. The method of claim 20, wherein the environmental states includes information about at least one of wind speed, temperature, heat index, humidity, movement, luminosity, signal strength, audio, video, chemical composition, or external device functionality.
23. At least one machine-readable medium including instructions for receiving information, which when executed by a machine, cause the machine to:
receive, at the machine, a first set of signals from a first combination of sensors in a plurality of sensors;
receive, at the machine, a second set of signals from a second combination of sensors in the plurality of sensors;
determine, at the machine, a first distribution for the first set of signals;
determine, at the machine, a second distribution for the second set of signals;
estimate, at the machine, a divergence between the first distribution and the second distribution based at least in part on the first combination of sensors, the second combination of sensors, a total count of the plurality of sensors, distances from a plurality of signals in the second set of signals to a first plurality of nearest neighbor signals in the first set of signals and distances from a plurality of signals in the second set of signals to a second plurality of nearest neighbor signals in the second set of signals; and
determine, at the machine, whether the divergence exceeds a threshold.
24. The at least one machine-readable medium of claim 23, further comprising operations to generate an alert in response to determining the divergence exceeds the threshold.
25. The at least one machine-readable medium of claim 23, further comprising, operations to determine the threshold using a target false alarm rate.