Apparatus and method for discriminating bills using RF signals
AssigneeKisan Electronics Co., Ltd.
InventorsChangho Ko, Sang Hwan Jang
Life of this patent
Estimating the term…
Abstract
A bill discrimination apparatus and method using a radio frequency (RF) signal that includes a transmission antenna radiating the radio frequency (RF) signal; a reception antenna receiving the RF signal from the transmission antenna; and a control unit providing the RF signal to the transmission antenna, and detecting a thickness of a bill, a state of the bill, or a presence of a foreign object on the bill based on a voltage of the RF signal transmitted through the bill and received by the reception antenna when the bill is between the transmission antenna and the reception antenna. The RF signal has a preset, specific frequency.
Claims20
A bill discrimination apparatus comprising:
- a transmission antenna radiating a radio frequency (RF) signal having a predetermined specific frequency;
- a reception antenna receiving the RF signal that from the transmission antenna;
- a control unit providing the RF signal to the transmission antenna, and detecting a thickness of a bill, a state of the bill or a presence of a foreign object on the bill based on a voltage of the RF signal transmitted through the bill and received by the reception antenna when the bill is between the transmission antenna and the reception antenna.
A bill discrimination method comprising:
- radiating an RF signal having a predetermined specific frequency and level from a transmission antenna;
- receiving the RF signal from the transmission antenna at a reception antenna;
- detecting, by a control unit, a voltage of the RF signal received at the reception antenna, the voltage of the RF signal received at the reception antenna varying upon insertion of a bill between the transmission antenna and the reception antenna when radiating the RF signal;
- and
- determining, by the control unit, a thickness of the inserted bill, a state of the inserted bill, or a presence of a foreign object on the bill, based on the voltage of the RF signal received at the reception antenna.
Dependencies are inferred from the claim text.