JP2933480B2 - Time division multiplex signal transmission equipment - Google Patents
Time division multiplex signal transmission equipmentInfo
- Publication number
- JP2933480B2 JP2933480B2 JP32160293A JP32160293A JP2933480B2 JP 2933480 B2 JP2933480 B2 JP 2933480B2 JP 32160293 A JP32160293 A JP 32160293A JP 32160293 A JP32160293 A JP 32160293A JP 2933480 B2 JP2933480 B2 JP 2933480B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- switch
- division
- optical
- time
- 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.)
- Expired - Fee Related
Links
Landscapes
- Time-Division Multiplex Systems (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、信号伝送系に用いられ
る時分割多重信号伝送装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a time division multiplex signal transmission device used in a signal transmission system.
【0002】[0002]
【従来の技術】従来のこの種の時分割多重信号伝送装置
は、図2に例示するように、入力端子1−1ないし21
−nに接続された時分割多重器22、電気光変換器2
3、光ファイバ24、光電気変換器25ならびに出力端
子27−1ないし27−nに接続された時分割分離器2
6を縦続に接続して構成されている。2. Description of the Related Art As shown in FIG. 2, a conventional time-division multiplex signal transmission apparatus of this type has input terminals 1-1 through 21.
-N connected to the time-division multiplexer 22, the electro-optical converter 2
3. time division separator 2 connected to optical fiber 24, photoelectric converter 25 and output terminals 27-1 to 27-n
6 are connected in cascade.
【0003】このような構成において、入力端子21−
1ないし21−nにそれぞれ入力信号が供給されると、
時分割多重器22で時分割多重化され、電気光変換器2
3で光信号に変換されて、光ファイバ24を経由し伝送
された後、光電気変換器25で再び電気信号に戻され、
時分割分離器26で多重化信号の分離が行われ、出力端
子27−1ないし27−nにそれぞれ出力される。In such a configuration, the input terminal 21-
When an input signal is supplied to each of 1 to 21-n,
The signal is time-division multiplexed by the time-division multiplexer 22 and the electro-optical converter 2
After being converted into an optical signal at 3 and transmitted via the optical fiber 24, it is converted back to an electrical signal at the photoelectric converter 25,
The multiplexed signal is separated by the time division separator 26 and output to the output terminals 27-1 to 27-n.
【0004】[0004]
【発明が解決しようとする課題】上述した従来の時分割
多重信号伝送装置では、予め決められた一種類の伝送速
度の信号しか多重化伝送ができないという欠点がある。The above-described conventional time-division multiplex signal transmission apparatus has a disadvantage that multiplex transmission can be performed only with a signal having a predetermined transmission rate.
【0005】[0005]
【課題を解決するための手段】本発明の時分割多重信号
伝送装置は、おのおのシリアル形式のディジタル入力信
号を受けて、複数の送出端のうちの一つを表わす第1の
制御信号に応じ切り換え送出する複数の第1の切換器
と、その第1の切換器の各出力信号を受けその伝送速度
に応じて時分割多重化する複数の時分割多重器と、前記
時分割多重器の各出力信号のうちの一つを選択し送出す
る第2の切換器と、該切換器が送出する電気信号を光信
号に変換する電気光変換器と、その光信号を伝送する光
ファイバと、前記光信号を電気信号に変換する光電気変
換器と、その変換された電気信号からクロック成分を取
り出すクロック抽出器と、前記光電気変換器からの電気
信号を複数の送出端のうちの一つに切り換える第3の切
換器と、前記抽出したクロックの周波数に応じて前記第
3の切換器を切り換えるための第2の制御信号を発生す
るクロック識別回路と、前記第3の切換器の出力信号を
受けて時分割多重された信号を分離する複数の時分割分
離器と、前記第2の制御信号に応じて前記時分割分離器
の各出力信号のうちの一つを切り換え選択して出力する
複数の第4の切換器とを備えている。SUMMARY OF THE INVENTION A time division multiplexed signal transmission apparatus according to the present invention receives a digital input signal in a serial format and switches in response to a first control signal representing one of a plurality of transmission ends. A plurality of first switches to be transmitted, and a transmission rate of each output signal of the first switches.
A plurality of time-division multiplexers, a second switch for selecting and transmitting one of the output signals of the time-division multiplexer, and an electric signal transmitted by the switch. To an optical signal, an optical fiber for transmitting the optical signal, an optical-electrical converter for converting the optical signal to an electric signal, and a clock extraction for extracting a clock component from the converted electric signal. A third switch for switching an electric signal from the photoelectric converter to one of a plurality of sending ends, and a third switch for switching the third switch according to the frequency of the extracted clock. a clock discriminating circuit for generating a second control signal, and a plurality of time division separator for separating division multiplexed signal when receiving the output signal of said third switching unit, according to said second control signal Of each output signal of the time-division separator. And a plurality of fourth switching unit for one selectively switched to output.
【0006】[0006]
【実施例】次に、本発明について図面を参照して説明す
る。Next, the present invention will be described with reference to the drawings.
【0007】図1は、本発明の一実施例を示すブロック
図である。図1において、参照符号1−1ないし1−n
は入力端子、2は制御信号入力端子、3−1ないし3−
nは切換器、4−1ないし4−nは時分割多重器、5は
切換器、6は電気光変換器、7は光ファイバ、8は光電
気変換器、9はクロック抽出器、10はクロック識別回
路、11は切換器、12−1ないし12−nは時分割分
離器、13−1ないし13−nは切換器、14−1ない
し14−nは出力端子を、それぞれ示す。FIG. 1 is a block diagram showing one embodiment of the present invention. In FIG. 1, reference numerals 1-1 to 1-n
Is an input terminal, 2 is a control signal input terminal, and 3-1 to 3-
n is a switch, 4-1 through 4-n are time division multiplexers, 5 is a switch, 6 is an electro-optical converter, 7 is an optical fiber, 8 is an opto-electric converter, 9 is a clock extractor, 10 is A clock discriminating circuit, 11 is a switch, 12-1 to 12-n are time division separators, 13-1 to 13-n are switches, and 14-1 to 14-n are output terminals.
【0008】動作時に、入力端子1−1ないし1−nに
それぞれシリアル形式でディジタル入力信号が供給され
ると、制御信号入力端子2から与えられる出力ルートを
選択指示する制御信号に応じて切換器3−1ないし3−
nで切り換えられ、おのおの時分割多重器4−1ないし
4−nのいずれか1つに接続されて、時分割多重化され
る。このとき制御信号は、入力信号の伝送速度に適合す
る時分割多重器4−1ないし4−nの1つを選択し、ま
た時分割多重化器4−1ないし4−nの1つの送出信号
を切換器5で選択して電気光変換器6へ送らせる。その
送出信号は、電気光変換器6で光信号に変換され、光フ
ァイバ7で伝送される。光電気変換器8はその光信号を
電気信号に戻し、クロック抽出器9はその電気信号に含
まれているクロックを抽出し、クロック識別回路10で
時分割分離器12−1ないし12−nのいずれか1つを
選択するための制御信号を発生させて切換器11,13
−1ないし13−nに与え、時分割分離器12−1ない
し12−nのうちの1つで分離された信号を切換器13
−1ないし13−nから出力端子14−1ないし14−
nへ出力させる。In operation, when a digital input signal is supplied to each of the input terminals 1-1 to 1-n in a serial format, a switch is provided in accordance with a control signal for selecting an output route provided from the control signal input terminal 2. 3-1 to 3-
n, and each is connected to any one of the time division multiplexers 4-1 to 4-n and time division multiplexed. At this time, the control signal selects one of the time division multiplexers 4-1 to 4-n suitable for the transmission rate of the input signal, and outputs one of the time division multiplexers 4-1 to 4-n. Is selected by the switch 5 and sent to the electro-optical converter 6. The transmission signal is converted into an optical signal by the electro-optical converter 6 and transmitted by the optical fiber 7. The opto-electric converter 8 converts the optical signal back to an electric signal, and the clock extractor 9 extracts the clock contained in the electric signal. A control signal for selecting one of them is generated, and switchers 11 and 13 are generated.
-1 to 13-n, and a signal separated by one of the time division separators 12-1 to 12-n is supplied to the switch 13
-1 to 13-n to output terminals 14-1 to 14-
n.
【0009】このように時分割多重器4−1ないし4−
n、ならびに時分割分離器12−1ないし12−nを複
数種の伝送速度のいずれか1つに適合するように選定し
て設けておくことにより、複数種の伝送速度の信号に対
し多重化伝送できる装置が得られる。As described above, the time division multiplexers 4-1 to 4-
n and the time division demultiplexers 12-1 to 12-n are selected and provided so as to conform to any one of a plurality of transmission speeds, so that signals of a plurality of transmission speeds can be multiplexed. A device capable of transmission is obtained.
【0010】[0010]
【発明の効果】以上説明したように本発明によれば、ク
ロック周波数を制御信号として使い、時分割多重器およ
び分離器を切り換えて選択させることによって、複数種
の伝送速度の信号を多重化伝送できる。As described above, according to the present invention, a signal having a plurality of transmission rates is multiplexed by using a clock frequency as a control signal and switching and selecting a time division multiplexer and a separator. it can.
【図1】本発明の一実施例を示すブロック図。FIG. 1 is a block diagram showing one embodiment of the present invention.
【図2】従来の時分割多重信号伝送装置を例示するブロ
ック図。FIG. 2 is a block diagram illustrating a conventional time division multiplex signal transmission device.
1−1ないし1−n 入力端子 2 制御信号入力端子 3−1ないし3−n 切換器 4−1ないし4−n 時分割多重器 5 切換器 6 電気光変換器 7 光ファイバ 8 光電気変換器 9 クロック抽出器 10 クロック識別回路 11 切換器 12−1ないし12−n 時分割分離器 13−1ないし13−n 切換器 14−1ないし14−n 出力端子 1-1 to 1-n input terminal 2 control signal input terminal 3-1 to 3-n switch 4-1 to 4-n time division multiplexer 5 switch 6 electro-optical converter 7 optical fiber 8 opto-electric converter 9 Clock Extractor 10 Clock Identification Circuit 11 Switch 12-1 to 12-n Time Division Separator 13-1 to 13-n Switch 14-1 to 14-n Output Terminal
Claims (1)
信号を受けて、複数の送出端のうちの一つを表わす第1
の制御信号に応じ切り換え送出する複数の第1の切換器
と、その第1の切換器の各出力信号を受けその伝送速度
に応じて時分割多重化する複数の時分割多重器と、前記
時分割多重器の各出力信号のうちの一つを選択し送出す
る第2の切換器と、該切換器が送出する電気信号を光信
号に変換する電気光変換器と、その光信号を伝送する光
ファイバと、前記光信号を電気信号に変換する光電気変
換器と、その変換された電気信号からクロック成分を取
り出すクロック抽出器と、前記光電気変換器からの電気
信号を複数の送出端のうちの一つに切り換える第3の切
換器と、前記抽出したクロックの周波数に応じて前記第
3の切換器を切り換えるための第2の制御信号を発生す
るクロック識別回路と、前記第3の切換器の出力信号を
受けて時分割多重された信号を分離する複数の時分割分
離器と、前記第2の制御信号に応じて前記時分割分離器
の各出力信号のうちの一つを切り換え選択して出力する
複数の第4の切換器とを備えていることを特徴とする時
分割多重信号伝送装置。A first input terminal for receiving a digital input signal in serial form and representing one of a plurality of transmission ends;
A plurality of first switches for switching and transmitting according to the control signal of the first switching device, and a transmission rate for receiving each output signal of the first switching device.
A plurality of time-division multiplexers, a second switch for selecting and transmitting one of the output signals of the time-division multiplexer, and an electric signal transmitted by the switch. To an optical signal, an optical fiber for transmitting the optical signal, an optical-electrical converter for converting the optical signal to an electric signal, and a clock extraction for extracting a clock component from the converted electric signal. A third switch for switching an electric signal from the photoelectric converter to one of a plurality of sending ends, and a third switch for switching the third switch according to the frequency of the extracted clock. a clock discriminating circuit for generating a second control signal, and a plurality of time division separator for separating division multiplexed signal when receiving the output signal of said third switching unit, according to said second control signal Of each output signal of the time-division separator. Division multiplex signal transmitting apparatus when characterized by comprising a plurality of fourth switching unit for one selectively switched to output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32160293A JP2933480B2 (en) | 1993-12-21 | 1993-12-21 | Time division multiplex signal transmission equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32160293A JP2933480B2 (en) | 1993-12-21 | 1993-12-21 | Time division multiplex signal transmission equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07177122A JPH07177122A (en) | 1995-07-14 |
JP2933480B2 true JP2933480B2 (en) | 1999-08-16 |
Family
ID=18134371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32160293A Expired - Fee Related JP2933480B2 (en) | 1993-12-21 | 1993-12-21 | Time division multiplex signal transmission equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2933480B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2262139A1 (en) * | 2009-06-12 | 2010-12-15 | Alcatel Lucent | Variable bitrate equipment |
CN111092618A (en) * | 2019-12-23 | 2020-05-01 | 珠海全志科技股份有限公司 | Frequency adjusting method and device of system-on-chip frequency modulation equipment |
-
1993
- 1993-12-21 JP JP32160293A patent/JP2933480B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07177122A (en) | 1995-07-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1134999A3 (en) | Ultra-highspeed packet transfer ring network | |
EP1162860A3 (en) | Scalable WDM optical IP router architecture | |
JPH07202802A (en) | Optical channel dropping filter | |
JP3744343B2 (en) | Optical cross-connect device | |
JPH05114892A (en) | Optical interface system | |
JP2004343772A (en) | Device and method for switching digital broadcast channel using vcc information | |
JP2933480B2 (en) | Time division multiplex signal transmission equipment | |
JP3132420B2 (en) | WDM optical transmission equipment | |
JP2790039B2 (en) | Optical network | |
JPH01144832A (en) | Timing information optical parallel-transmission system | |
JPS6281136A (en) | Wavelength multiplex optical receiver | |
JPH0817400B2 (en) | Optical signal distribution / selection device | |
JP2657543B2 (en) | Optical add / drop device | |
KR100248411B1 (en) | Wdm type buffer memory implementation method | |
JPH0653936A (en) | Optical signal time-division multiplex transmitting method | |
JPH07121140B2 (en) | WDM optical switching circuit | |
JPH07321843A (en) | Optical packet switch | |
JP2679184B2 (en) | Loop type multiplexer | |
JPH05260075A (en) | Hybrid light exchange system | |
JP2965321B2 (en) | SOH termination circuit for SDH | |
JP3504482B2 (en) | ATM switching equipment | |
JP3083127B2 (en) | Optical switching system | |
JP3436204B2 (en) | Optical wavelength multiplex transmission method and transmission apparatus | |
JPH05219540A (en) | Subscriber system information selection system | |
JPH02182053A (en) | Communication equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090528 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100528 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 12 Free format text: PAYMENT UNTIL: 20110528 |
|
LAPS | Cancellation because of no payment of annual fees |