4. Television
  5. Monitoring, testing, or measuring
  6. Transmission path testing

Kuniaki Utsumi

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Cable broadcasting system and the transmission center for on dem

Multiplex communications – Wide area network – Packet switching
Patent

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Catv system in which chanel selection signal is transmitted from

Television – Two-way video and voice communication – User positioning
Patent

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Fiber optic communication terminal, fiber optic communication sy

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent

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FM modulation device

Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent

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FM modulator

Optical communications – Receiver – Heterodyne
Reexamination Certificate

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Profile ID: LFUS-PAI-P-215204

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