Patent ID: 8981854
Filing Date: 2015-03-17
Classification: G06F,H03L

Abstract:
1. A clock distributor, comprising: a first unit circuit section, a second unit circuit section, and a third unit circuit section, each unit circuit section being configured to receive a common control signal for controlling an oscillation frequency; a first wiring portion connecting the first unit circuit section and the second unit circuit section; a second wiring portion connecting the second unit circuit section and the third unit circuit section; a third wiring portion configured to connect the first unit circuit section and the third unit circuit section, wherein each of the first, second and third unit circuit sections includes an oscillator configured to receive a clock through a voltage current conversion element; a first voltage current conversion element configured to convert an output from the oscillator of the first unit circuit section into an electric current, and to output a result to a first connection portion of the first unit circuit section, the first connection portion connecting to the first wiring portion that connects to a second connection portion of the second unit circuit section; a second voltage current conversion element configured to convert an output of the first connection portion of the first unit circuit section into an electric current, and to output a result to the oscillator of the first unit circuit section; a third voltage current conversion element configured to convert the output from the oscillator of the first unit circuit section into an electric current, and to output a result to a second connection portion of the first unit circuit section, the second connection portion connecting to the third wiring portion that connects to the third unit circuit section, and a fourth voltage current conversion element configured to convert an output of the second connection portion of the first unit circuit section into an electric current, and to output a result to the oscillator of the first unit circuit section, wherein: a first voltage occurs in the first connection portion based on a difference between the electric current into which the output from the oscillator of the first unit circuit section is converted and the electric current into which an output from the oscillator of the second unit circuit section is converted, and a second voltage occurs in the second connection portion based on a difference between the electric current into which the output from the oscillator of the first unit circuit section is converted and the electric current into which an output from the oscillator of the third unit circuit section is converted.