Time information transmitter-receiver, and time information transmission-reception integrated circuit
US7535953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2004 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Aug 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time information transmission-reception integrated circuit includes: a reception control circuit for detecting a signal obtained by receiving and amplifying an external radio wave, and generating a clock data signal, based on a carrier signal the phase of which is synchronized with the signal; and a transmission control circuit for generating an amplitude modulation signal obtained by modulating the amplitude of the carrier signal by the transmission time code, by a modulator, and transmitting a relaying radio wave from an antenna, the phase of the relaying radio wave synchronized with the phase of the external radio wave, by correcting the phase shift of the amplitude modulation signal by a phase shifter. Thereby, the phase shift between the external radio wave and the relaying radio wave is cancelled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.