JPS6444643A - Multiplexer - Google Patents
MultiplexerInfo
- Publication number
- JPS6444643A JPS6444643A JP20209187A JP20209187A JPS6444643A JP S6444643 A JPS6444643 A JP S6444643A JP 20209187 A JP20209187 A JP 20209187A JP 20209187 A JP20209187 A JP 20209187A JP S6444643 A JPS6444643 A JP S6444643A
- Authority
- JP
- Japan
- Prior art keywords
- order group
- signal
- buffer memory
- ais
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To secure the normal operation of a buffer memory by directly writing an AIS signal in the buffer memory in case of no input of a lower-order group signal or a higher-order group signal. CONSTITUTION:A lower-order group oscillator 216 which controls the AIS signal frequency is provided, and an AIS converter 217 to which an input break detection signal (i) sent from an input break detector 214 is connected is inserted to the preceding stage of a buffer memory 212, and this converter 217 outputs a write clock (b) corresponding to the output clock of the lower-order group oscillator 216 and lower-order group data (AIS signal) (c) of all '1' when input break is detected. Lower-order group data (c) is written in the buffer memory 212 in accordance with the write clock (b) when a lower-order group signal (a) is inputted, and the AIS signal of all '1' is written there in accordance with the output clock of the lower-order group oscillator 216 when this input is broken.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20209187A JPH071881B2 (en) | 1987-08-13 | 1987-08-13 | Multiplexing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20209187A JPH071881B2 (en) | 1987-08-13 | 1987-08-13 | Multiplexing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6444643A true JPS6444643A (en) | 1989-02-17 |
JPH071881B2 JPH071881B2 (en) | 1995-01-11 |
Family
ID=16451817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20209187A Expired - Fee Related JPH071881B2 (en) | 1987-08-13 | 1987-08-13 | Multiplexing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH071881B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0352344A (en) * | 1989-07-19 | 1991-03-06 | Fujitsu Ltd | Dsc interface for radio equipment |
-
1987
- 1987-08-13 JP JP20209187A patent/JPH071881B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0352344A (en) * | 1989-07-19 | 1991-03-06 | Fujitsu Ltd | Dsc interface for radio equipment |
Also Published As
Publication number | Publication date |
---|---|
JPH071881B2 (en) | 1995-01-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |