Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OSCILLATION CIRCUIT
Document Type and Number:
Japanese Patent JP2014049888
Kind Code:
A
Abstract:

To provide an oscillation circuit that, exemplarily, consumes less power and stabilizes the frequency of a periodic pulse of oscillation.

According to one embodiment, the oscillation circuit provided includes a current source, a first capacitive element, a second capacitive element, a switching section, a comparison section and a generation section. The switching section switches between a first state and a second state. The first state is a state in which the current source is connected to the first capacitive element and a ground potential is connected to the second capacitive element. The second state is a state in which the current source is connected to the second capacitive element and the ground potential is connected to the first capacitive element. The comparison section compares a voltage charging the first capacitive element with a reference voltage in the first state, and compares a voltage charging the second capacitive element with the reference voltage in the second state. The generation section generates a periodic pulse in accordance with the comparison result of the comparison section. The switching section alternately switches between the first state and the second state in accordance with the comparison result of the comparison section.


Inventors:
ITO RUI
Application Number:
JP2012000190240
Publication Date:
March 17, 2014
Filing Date:
August 30, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOSHIBA CORP
International Classes:
H03K3/0231; H03K4/06
Attorney, Agent or Firm:
Hiroaki Sakai



 
Previous Patent: MONITORING CAMERA DEVICE

Next Patent: VOLTAGE COMPARISON CIRCUIT