Title:
SIGNAL PROCESSOR
Document Type and Number:
Japanese Patent JP3313885
Kind Code:
B2
Abstract:
PURPOSE: To constitute the signal processor so that it has a large dynamic range, and a signal processing of a high SN ratio can be executed by containing a connecting means for connecting rhe coupling capacity and a signal holding means, and a first amplifying means provided through a first switch means in both ends of the connecting means.
CONSTITUTION: This signal processor is constituted of a capacity means 1 which becomes the coupling capacity for extracting an AC signal component of an input signal from an input terminal VIN, a reset means 3, a sampling means 6 which becomes a connecting means, a holding means 2 which becomes a signal holding means containing a capacitor and buffer means 5, 7 being adding means, and a switching means 4. The input characteristic of the buffer means also has the characteristic of an inclination 1 for passing through an origin. In this case, since only the signal component can be added substantially in order to cancel a noise component, etc., a dynamic range is enlarged, and also, an addition processing being excellent in an SN ratio can be executed.
Inventors:
Yuutake Ueno
Mamoru Miyawaki
Mamoru Miyawaki
Application Number:
JP12124894A
Publication Date:
August 12, 2002
Filing Date:
June 02, 1994
Export Citation:
Assignee:
Canon Inc
International Classes:
G06G7/184; H04N1/028; (IPC1-7): G06G7/184; H04N1/028
Domestic Patent References:
| JP6123278A | ||||
| JP478976A |
Attorney, Agent or Firm:
Keizo Nishiyama (1 person outside)