Title:
【発明の名称】ATV/MPEG同期システム
Document Type and Number:
Japanese Patent JP3219773
Kind Code:
B2
Abstract:
An ATV system encodes variable length elementary streams of data into a multilevel symbol signal comprising a plurality of multiplexed fixed length data packets without sync information. The fixed length data packets are arranged in fields of repetitive data segments, each of which includes a data segment sync and each field of which includes a field sync. The fields of data segments are transmitted as suppressed carrier VSB modulation. In an ATV receiver, the data segment sync is used to generate a timing signal that identifies the beginning of each fixed length data packet. In one embodiment, a packet sync signal is inserted into each recovered fixed length data packet for recovering the elementary streams of data. In another embodiment, recovery of the elementary streams of data is accomplished without inserting a packet sync signal.
Inventors:
Cheetah, Richard W.
Feimov, Mark
Lord, Timothy.
Feimov, Mark
Lord, Timothy.
Application Number:
JP53044096A
Publication Date:
October 15, 2001
Filing Date:
April 03, 1996
Export Citation:
Assignee:
Zenith, Electronics, Corporation
International Classes:
H04N5/04; H03M5/20; H04J3/00; H04J3/22; H04L1/00; H04L7/04; H04N5/44; H04N7/24; H04N7/26; H04N7/52; H04N7/56; H04N7/66; (IPC1-7): H04J3/22; H04J3/00; H04N5/04; H04N7/24
Domestic Patent References:
| JP63155831A |
Other References:
【文献】米国特許5376969(US,A)
Attorney, Agent or Firm:
Kenji Yoshitake (3 others)