Optical communications device and optical communications system
AssigneeFujikura Ltd.
InventorsYoshihiko Taniguchi, Hiroya Ohnishi
Life of this patent
Estimating the term…
Abstract
In an optical communications device that generates picture optical signals and optical signals for data communication by wavelength division multiplexing, it is carried out to alter a signal pattern inserted between packet signals of the optical signals for data communication so that a frequency component of a modulation waveform of the signal pattern disperses. The signal pattern is generated by inputting outputs of a counter for counting up a sign bit into a coder adopting a designated coding method.
Claims7
An optical communications device for generating optical signals for data communication, comprising:
- a packet-signal generator that generates packet signals in the optical signals for data communication;
- an idle-signal generator that generates an idle signal to be inserted between the packet signals generated by the packet-signal generator;
- and
- a coder that disperses a frequency component of a modulation waveform of a signal pattern of the idle signal generated by the idle-signal generator.
An optical communications device for generating optical signals for data communication, comprising:
- a packet-signal generator that generates packet signals in the optical signals for data communication;
- a dummy packet-signal generator that generates a dummy packet signal to be inserted between the packet signals generated by the packet-signal generator;
- an idle-signal generator that generates an idle signal to be inserted between the packet signal generated by the packet-signal generator and the dummy packet signal generated by the dummy packet-signal generator;
- and
- a coder that disperses a frequency component of a modulation waveform of a signal pattern of the dummy packet-signal generated by the dummy packet-signal generator.
An optical communications system comprising:
- an optical communications device having a packet-signal generator that generates packet signals in optical signals for data communication, a sign bit-string generator that generates a sign bit-string to be inserted between the packet signals generated by the packet-signal generator, a coder that disperses a frequency component of a modulation waveform of a signal pattern formed by the sign bit-string generated by the sign bit-string generator and a picture-signal generator that generates optical signals for picture communication;
- and
- a wavelength division multiplexing device that multiplexes the optical signals for data communication and the optical signals for picture communication by wavelength division multiplexing and outputs the optical signals to an optical circuit.
An optical communications system comprising:
- an optical communications device having a packet-signal generator that generates packet signals in optical signals for data communication, a dummy packet-signal generator that generates a dummy packet signal to be inserted between the packet signals generated by the packet-signal generator, an idle-signal generator that generates an idle signal to be inserted between the packet signal generated by the packet-signal generator and the dummy packet signal generated by the dummy packet-signal generator, a coder that disperses a frequency component of a modulation waveform of a signal pattern of the dummy packet signal generated by the dummy packet-signal generator and a picture-signal generator that generates optical signals for picture communication;
- and
- a wavelength division multiplexing device that multiplexes the optical signals for data communication and the optical signals for picture communication by wavelength division multiplexing and outputs the optical signals to an optical circuit.
Dependencies are inferred from the claim text.