Approximate figures measuring system
AssigneeRicoh Company, Ltd.
InventorYoshikatsu Nakagawa
Life of this patent
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Abstract
An approximate figures measuring system includes a signal transmission device and a signal receiving device. The signal transmission device is arranged in each of any objects to be measured and emits a signal from which a peak can be generated at a receiving device in a predetermined period. The signal receiving device receives the signal transmitted from the signal transmission device and includes a peak detection circuit and a calculation circuit for obtaining an output corresponding to the number of the peaks of the signals from the objects.
Claims14
A system for measuring an approximate number among a number of known objects in a particular place, comprising:
- a signal transmission means arranged in each of the objects to be measured for emitting a PN signal of a specific group, wherein a peak of the PN signal can be generated at a receiving device in a predetermined period;
- and
- a signal receiving means for receiving the PN signal transmitted from said signal transmission means, said signal receiving means having a peak detection means and a calculation means for obtaining an output corresponding to the quantity of the peaks of the PN signal emitted from said objects and for counting the peaks of self-correlation of the PN signal.
A system for measuring an approximate number among a number of known objects in a particular place, comprising:
- a signal transmission means arranged in each of the objects to be measured for emitting an FM chirp signal, wherein a peak of the FM chirp signal can be generated at a receiving device in a predetermined period;
- and
- a signal receiving means for receiving the FM chirp signal transmitted from said signal transmission means, said signal receiving means having a peak detection means and a calculation means for obtaining an output corresponding to the quantity of the peaks of the FM chirp signal emitted from said objects and for counting the peaks of self-correlation of the FM chirp signal.
A system for measuring an approximate number along a number of known objects in a particular place, comprising:
- a signal transmission means arranged in each of the objects to be measured for emitting a predetermined signal of a specific group, wherein a peak of the predetermined signal can be generated at a receiving device in a predetermined period;
- and
- signal receiving means for receiving the predetermined signal transmitted from said signal transmission means, said signal receiving means having a peak detection means and a calculation means for obtaining an output corresponding to the quantity of the peaks of the predetermined signal emitted from said objects and for counting the peaks of self-correlation of the predetermined signal.
Dependencies are inferred from the claim text.