Patent ID: 7793847
Filing Date: 2010-09-14
Classification: A63F

Abstract:
1. A coin-shaped recording medium, comprising: a transmitting and receiving portion transmitting and receiving value data showing a value degree to and from a recording medium processing device; a recording circuit recording and holding the value data; an image display portion to or from which an image can be written or deleted by applying voltage and directing light thereto, the image being maintained without power supply after being written; a voltage input portion exposed on an external surface of the coin-shaped recording medium to input voltage applied directly to the image display portion by connecting with an external terminal; and an integrated circuit device that records by wireless, separately from the image written or deleted to or from the image display portion, the received or transmitted value data from the transmitting and receiving portion, so that the data on the integrated circuit device coincides with the image on the image display portion; wherein the voltage input portion includes: a first type of electrode exposed on one half of the side periphery between the front and back faces of the coin-shaped recording medium to input first type voltage; and a second type electrode exposed on the other half of the side periphery between the front and back faces of the coin-shaped recording medium to input second type voltage.