Timing source
First Claim
1. A timing source for sending timing information via a packet network, said source comprising a first clock for generating said timing information, a packet forming section for forming a sequence of packets, an output section for transmitting said packets of said sequence via said network as packet bursts, each of which comprises a plurality of said packets with a time difference between consecutive ones of said packets of a same said burst being less than a time difference between consecutive ones of said bursts, and a time-stamping section for inserting into each said packet of said sequence a transmission time derived from said timing information generated by said first clock.
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Accused Products
Abstract
A timing source is provided for sending timing information via a packet network. The source comprises a first clock for generating the timing information and a packet forming section for forming a sequence of packets. An output section in the form of a packet launch control section transmits the packets via the network as packet bursts, each of which comprises a plurality of packets with the intervals between consecutive packets of each burst being less than the intervals between consecutive packets. A time-stamping section inserts into each packet a transmission time derived from the timing information generated by the clock.
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Citations
25 Claims
- 1. A timing source for sending timing information via a packet network, said source comprising a first clock for generating said timing information, a packet forming section for forming a sequence of packets, an output section for transmitting said packets of said sequence via said network as packet bursts, each of which comprises a plurality of said packets with a time difference between consecutive ones of said packets of a same said burst being less than a time difference between consecutive ones of said bursts, and a time-stamping section for inserting into each said packet of said sequence a transmission time derived from said timing information generated by said first clock.
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22. A combination of:
- a timing source for sending timing information via a packet network, said source comprising a first clock for generating said timing information, a packet forming section for forming a sequence of packets, an output section for transmitting said packets of said sequence via said network as packet bursts, each of which comprises a plurality of said packets with a time difference between consecutive ones of said packets of a same said burst being less than a time difference between consecutive ones of said bursts, and a time-stamping section for inserting into each said packet of said sequence a transmission time derived from said timing information generated by said first clock; and
a destination apparatus comprising a second adjustable clock and an arrangement for adjusting said second clock into synchronism with said first clock. - View Dependent Claims (23, 24)
- a timing source for sending timing information via a packet network, said source comprising a first clock for generating said timing information, a packet forming section for forming a sequence of packets, an output section for transmitting said packets of said sequence via said network as packet bursts, each of which comprises a plurality of said packets with a time difference between consecutive ones of said packets of a same said burst being less than a time difference between consecutive ones of said bursts, and a time-stamping section for inserting into each said packet of said sequence a transmission time derived from said timing information generated by said first clock; and
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25. A method of sending timing information via a packet network, said method comprising the steps of:
- generating said timing information;
forming a sequence of packets;
transmitting said packets of said sequence via said network as packet bursts, each of which comprises a plurality of said packets with a time difference between consecutive ones of said packets of a same burst being less than a time difference between consecutive ones of said bursts, and inserting into each said packet of said sequence a transmission time derived from said timing information.
- generating said timing information;
Specification