Patent ID: 7616892

Claim:
A contents information delivery method of delivering a desired contents information to at least one of a plurality of user stations via a central station, the contents information delivery method comprising the steps of: in the central station, receiving a plurality of contents-included optical signals each having a first wavelength different from each other, each said contents-included optical signal being transmitted from one of a plurality of contents sources, generating a set of the received plurality of contents-included optical signals for each of the user stations, selecting one of the plurality of contents-included optical signals from the set for each of at least one of the plurality of user stations, respectively; performing interruption/non-interruption control of the contents-included optical signal selected for each of at least one of the plurality of user stations; converting the first wavelength of the contents-included optical signal to be passed through thereof by the interruption/non-interruption control into a second wavelength assigned for each of the user stations, respectively, wavelength multiplexing the wavelength-converted contents-included optical signals, and outputting and transmitting the wavelength multiplexed optical signal via a transmission line; and in each of the user stations, receiving an optical signal having the second wavelength assigned to one of the user stations from among wavelengths of said wavelength multiplexed optical signal.