Patent ID: 7859991
Filing Date: 2010-12-28
Classification: H02J,H04J,H04L,Y02B,Y02E,Y04S

Abstract:
1. A signal transmitting apparatus for communicating a plurality of digital input signals through a single signal line, said signal transmitting apparatus comprising: a sending part for converting an amplitude of each of the plurality of digital input signals into a weighted voltage in accordance with a predetermined weight, and generating a send signal by adding the weighted voltages converted from the plurality of digital input signals, and outputting the send signal; and a receiving part for receiving the send signal from the sending part, comparing the send signal with a plurality of predetermined reference voltages, generating a plurality of digital output signals corresponding to the plurality of digital input signals, based on the send signal, and outputting said plurality of the digital output signals, wherein said sending part includes input resistances, of which number is a same number as the digital signals, and an inversion amplifying circuit formed by an operational amplifier, and wherein a resistance value of each of the input resistances connecting to the inverting input terminal of the operational amplifier is set so that the amplitudes of each of the digital input signals are converted into the weighted voltages, in accordance with the predetermined weight.