Title:
DATA RATE CONVERTER
Document Type and Number:
Japanese Patent JP3199418
Kind Code:
B2
Abstract:
PURPOSE: To make the phase among plural data signals to be outputted to coincide in the data rate converter converting a frequency of a digital signal.
CONSTITUTION: Phases of frame pulses outputted from POH multiplexers 14, 15 of VC framers 2, 3 and a frame pulse outputted from a POH multiplexer 13 of a VC framer 1 are compared with phase comparators 8, 9. When any phase shift is detected, the write/read of buffer memories 5, 6 is operated through controllers 11, 12, the phase of data read from the buffer memories 5, 6 is adjusted and the phase of the data outputted from the VC framers 2, 3 is made coincident with the phase of the data of the VC framer 1.
Inventors:
Kenji Taniguchi
Kojiro Matsumoto
Yasuyuki Okumura
Ryozo Kishimoto
Kojiro Matsumoto
Yasuyuki Okumura
Ryozo Kishimoto
Application Number:
JP29683391A
Publication Date:
August 20, 2001
Filing Date:
November 13, 1991
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
Nippon Telegraph and Telephone Corporation
Nippon Telegraph and Telephone Corporation
International Classes:
H04J3/04; H04J3/00; H04J3/06; H04J3/22; H04L7/00; (IPC1-7): H04J3/00; H04J3/06; H04L7/00
Domestic Patent References:
| JP4294649A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)