Claims
- 1. A data recording apparatus, comprising:
- a generator for generating a system clock;
- a receiver for receiving a data packet at a first transmission rate, said data packet including sync data at the beginning thereof;
- a sync eliminator for eliminating said sync data in said data packet;
- a time determining circuit for determining a reception time of said data packet as indicated by said system clock;
- a time stamper for adding time data identifying said reception time to said data packet in place of the eliminated sync data;
- a rate converter for converting said transmission rate of said data packet having said time data added thereto from said first transmission rate to a second transmission rate; and
- a recorder for recording said data packet including said time data at said second transmission rate on a record medium.
- 2. The apparatus of claim 1, wherein said receiver includes a sync detector for detecting said sync data; and said time determining circuit includes a latch for latching a time indicated by said system clock when said sync data in said data packet is detected.
- 3. The apparatus of claim 1, wherein said recorder includes a rotating drum, and the rotation of said drum is synchronized with said system clock.
- 4. A method of recording data, comprising the steps of:
- generating a system clock;
- receiving a data packet at a first transmission rates, said data packet including sync data at the beginning thereof;
- eliminating said sync data in said data packet;
- determining a reception time of said data packet as indicated by said system clock;
- adding time data identifying said reception time to said data packet in place of the eliminated sync data;
- converting said transmission rate of said data packet having said time data added thereto from said first transmission rate to a second transmission rate; and
- recording said data packet including said time data at said second transmission rate on a record medium.
- 5. The method of claim 4, wherein said step of determining the reception time is carried out by latching a time indicated by said system clock when said sync data in said data packet is received.
Priority Claims (2)
Number |
Date |
Country |
Kind |
6-304421 |
Nov 1994 |
JPX |
|
7-031684 |
Jan 1995 |
JPX |
|
Parent Case Info
This application is a division of application Ser. No. 08/555,872, filed Nov. 13, 1995.
US Referenced Citations (8)
Divisions (1)
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Number |
Date |
Country |
Parent |
555872 |
Nov 1995 |
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