Abstract: System and methods are provided for detecting helmet contact. A first helmet (e.g., an offensive player's helmet) detects an impact, and transmits a signal indicating the detected impact. A second helmet (e.g., a defensive player's helmet) detects the impact and transmits a signal indicating a detected impact. In response to analyzing the signal transmissions of first and second helmets, a monitor determines that a helmet-to-helmet contact has occurred between the first and second helmets. To minimize the occurrence of false positive determinations, especially in the event that multiple helmets detect impacts, the helmets may be enabled to only transmit a signal if the impact exceeds a first impact threshold. Another means of minimizing false positives is for the helmets to transmit a timestamp associated with a time of impact occurrence. Further, helmets may collect and transmit information regarding the proximity of other helmets.

Abstract: System and methods are provided for detecting helmet contact. A first helmet (e.g., an offensive player's helmet) detects an impact, and transmits a signal indicating the detected impact. A second helmet (e.g., a defensive player's helmet) detects the impact and transmits a signal indicating a detected impact. In response to analyzing the signal transmissions of first and second helmets, a monitor determines that a helmet-to-helmet contact has occurred between the first and second helmets. To minimize the occurrence of false positive determinations, especially in the event that multiple helmets detect impacts, the helmets may be enabled to only transmit a signal if the impact exceeds a first impact threshold. Another means of minimizing false positives is for the helmets to transmit a timestamp associated with a time of impact occurrence. Further, helmets may collect and transmit information regarding the proximity of other helmets.

Abstract: A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing three thresholds; receiving a binary serial data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; data stream inputs below the first threshold and above the third threshold are a “0” if both the second and third bits are “1” values, and as a “1” if either of the second and third values is a “1”; data stream inputs above the second threshold and below the third threshold are a “1” if both the second and third bits are a “0” value, and as a “0” if either of the second and third values is a “0”.

Abstract: A system and method are provided for non-casual channel equalization in a communications system. The method comprises: establishing a first threshold (V1) to distinguish a high probability “1” first bit estimate; establishing a second threshold (V0) to distinguish a high probability “0” first bit estimate; establishing a third threshold (Vopt) to distinguish first bit estimates between the first and second thresholds; receiving a non-return to zero (NRZ) data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; in response to the comparisons, determining the value of the first bit.