Patent ID: 9013455
Filing Date: 2015-04-21
Classification: G06F

Abstract:
1. An active pen comprising: an elongated body member containing therein a signal transmission module and a battery module, the signal transmission module to transmit a signal that is intended for detection by a touch screen that comprises active digitizer technology, and the battery module comprising one or more batteries to power the signal transmission module, the body member comprising a control contact and a charging contact, each positioned on a clip-facing surface of the body member; an elongated clip member connected to the body member and having a free end comprising a ground contact that is connected to a reference voltage of the active pen, the ground contact positioned on a body-facing surface of the free end opposite the control contact and opposite the charging contact, wherein the free end is biased toward the clip-facing surface of the body member to maintain the ground contact in electrically conductive contact with the control contact and with the charging contact, wherein the battery module is to supply full power to the signal transmission module responsive to the ground contact being in electrically conductive contact with the control contact and the charging contact, and wherein the battery module is to limit the supply of full power to the signal transmission module responsive the ground contact being separated from one or both of the control contact and the charging contact.