Signal recovery circuit and signal recovery method
First Claim
Patent Images
1. A signal recovery circuit comprising:
- a data acquisition circuit configured to collect a received data signal according to a transition edge of a received signal recovery clock; and
a phase adjustment circuit configured to adjust a phase relationship between the transition edge of the received signal recovery clock and the received data signal according to a data value of the received data signal to be acquired by the data acquisition circuit, whereinthe phase adjustment circuit comprises a clock phase adjustment circuit configured to generate an adjustment-completed received signal recovery clock by adjusting a phase of the transition edge of the received signal recovery clock according to the data value of the received data signal to be acquired by the data acquisition circuit,the data acquisition circuit acquires the received data signal according to the transition edge of the adjustment-completed received signal recovery clock,the received data signal is a signal received in the form of an optical signal by direct laser modulation, andthe clock phase adjustment signal is configured to make the transition edge of the received signal recovery clock faster when the received data signal has a level of 1 and make the transition edge of the received signal recovery clock slower when the received data signal has a level of 0.
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Abstract
A signal recovery circuit includes: a data acquisition circuit configured to collect a received data signal according to a transition edge of a received signal recovery clock; and a phase adjustment circuit configured to adjust a phase relationship between the transition edge of the received signal recovery clock and the received data signal according to a data value of the received data signal to be acquired by the data acquisition circuit.
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Citations
11 Claims
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1. A signal recovery circuit comprising:
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a data acquisition circuit configured to collect a received data signal according to a transition edge of a received signal recovery clock; and a phase adjustment circuit configured to adjust a phase relationship between the transition edge of the received signal recovery clock and the received data signal according to a data value of the received data signal to be acquired by the data acquisition circuit, wherein the phase adjustment circuit comprises a clock phase adjustment circuit configured to generate an adjustment-completed received signal recovery clock by adjusting a phase of the transition edge of the received signal recovery clock according to the data value of the received data signal to be acquired by the data acquisition circuit, the data acquisition circuit acquires the received data signal according to the transition edge of the adjustment-completed received signal recovery clock, the received data signal is a signal received in the form of an optical signal by direct laser modulation, and the clock phase adjustment signal is configured to make the transition edge of the received signal recovery clock faster when the received data signal has a level of 1 and make the transition edge of the received signal recovery clock slower when the received data signal has a level of 0. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A signal recovery method comprising:
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receiving an optical signal generated by direct laser modulation to generate a received data signal; adjusting a phase relationship between a transition edge of a received signal recovery clock and the received data signal according to a data value of the received data signal; acquiring the received data signal according to the transition edge of the received signal recovery clock; generating an adjustment-completed received signal recovery clock by adjusting a phase of the transition edge of the received signal recovery clock according to the data value of the received data signal; acquiring the received data signal according to the transition edge of the adjustment-completed received signal recovery clock; making the transition edge of the received signal recovery clock faster when the received data signal has a level of 1; and making the transition edge of the received signal recovery clock slower when the received data signal has a level of 0.
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11. An optical communication system comprising:
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a transmitter circuit configured to generate an optical signal according to a transmitted signal by direct laser modulation and output the optical signal; a transmission path configured to transmit the optical signal; and a receiver circuit configured to receive the optical signal and recover a received data corresponding to the transmitted data signal, wherein the receiver circuit includes; a receiving part configured to generate a received data signal from the optical signal received from the transmission path; a data acquisition circuit configured to acquire the received data signal according to a transition edge of a received signal recovery clock; and a phase adjustment circuit configured to adjust a phase relationship between the transition edge of the received signal recovery clock and the received data signal according to the data value of the received data signal to be acquired by the data acquisition circuit, wherein the phase adjustment circuit comprises a clock phase adjustment circuit configured to generate an adjustment-completed received signal recovery clock by adjusting a phase of the transition edge of the received signal recovery clock according to the data value of the received data signal to be acquired by the data acquisition circuit, the data acquisition circuit acquires the received data signal according to the transition edge of the adjustment-completed received signal recovery clock, the received data signal is a signal received in the form of an optical signal by direct laser modulation, and the clock phase adjustment signal is configured to make the transition edge of the received signal recovery clock faster when the received data signal has a level of 1 and make the transition edge of the received signal recovery clock slower when the received data signal has a level of 0.
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Specification