JPS5929035B2 - Multi-frequency signal generation method - Google Patents
Multi-frequency signal generation methodInfo
- Publication number
- JPS5929035B2 JPS5929035B2 JP53029003A JP2900378A JPS5929035B2 JP S5929035 B2 JPS5929035 B2 JP S5929035B2 JP 53029003 A JP53029003 A JP 53029003A JP 2900378 A JP2900378 A JP 2900378A JP S5929035 B2 JPS5929035 B2 JP S5929035B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency signal
- signal
- storage device
- state
- data
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
- H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Devices For Supply Of Signal Current (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
【発明の詳細な説明】
本発明はディジタル交換機の多周波信号発生方式に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-frequency signal generation method for a digital exchange.
本発明の目的は従来知られてなかつたメーク・ブレイク
された多周波信号を得る多周波信号発生方式を提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-frequency signal generation system for obtaining make-break multi-frequency signals, which has not been known in the past.
本発明による多周波信号発生方式は多周波信号と出力が
ゼロである無信号が記憶されているリード・オンリーメ
モリ等の記憶装置のデータを読み出すオーダ信号を一定
周期で送出することによつて、記憶装置の多周波信号デ
ータと、無信号データを交互に読み出し、メーク・ブレ
イク状態を作る。The multi-frequency signal generation method according to the present invention transmits at a constant cycle an order signal for reading data from a storage device such as a read-only memory in which multi-frequency signals and no signals with an output of zero are stored. Multi-frequency signal data and non-signal data are read out alternately from the storage device to create a make-break state.
すなわち多周波信号が読み出された時はメーク状態、無
信号が読み出された時はブレイク状態が作られるように
したものである。That is, a make state is created when a multifrequency signal is read out, and a break state is created when a no signal is read out.
まずこの発明方式の基本となる動作原理を説明する。First, the basic operating principle of this invention system will be explained.
２周波の混合波を１２５μｓｅ晦にサンプリングしたＰ
ＣＭデータの値を記憶装置に記憶し、記憶装置を１２５
μｓｅ晦に読み出すことによつて２周波の混合波が得ら
れる。P sampled 2-frequency mixed wave at 125μse
The value of the CM data is stored in the storage device, and the storage device is
By reading every μse, a mixed wave of two frequencies can be obtained.
記憶装置のメモリエリアには無信号と多周波信号のデー
タを記憶する。The memory area of the storage device stores data of no signals and multi-frequency signals.
記憶装置のメモリ容量は例えば１種類の多周波信号の記
憶容量がｎＸＷ（ビット長×ワード長）ビット必要だと
すると、全多周波信号と無信号は発明の詳細な説明の末
尾に示す表１に示したように１６種類があげられるので
、全記憶容量は１６×ｎＸＷビットが必要となる。この
記憶装置は最近、急速な発達をとげているプログラマブ
ルリード・オンリ・メモリを用いることによつて簡単に
実現できる。この記憶装置に第１図Ａに示したように無
信号と多周波信号とを割りつける。Assuming that the memory capacity of the storage device is, for example, nXW (bit length x word length) bits required for one type of multi-frequency signal, the total multi-frequency signals and no signals are shown in Table 1 shown at the end of the detailed description of the invention. Since there are 16 types as shown above, the total storage capacity requires 16×nXW bits. This storage device can be easily realized by using programmable read-only memory, which has recently been rapidly developed. No signals and multi-frequency signals are assigned to this storage device as shown in FIG. 1A.
多周波信号のデータには第１図Ｃに示したように２周波
を混合した波形をＳ個にサンプリングした値を同図Ｂに
示すように記憶装置のワード方向に記憶する。すなわち
サンプリング数Ｓは記憶装置の一周波のワード数Ｗと一
致する。As data of the multi-frequency signal, values obtained by sampling a waveform obtained by mixing two frequencies into S pieces as shown in FIG. 1C are stored in the word direction of the storage device as shown in FIG. 1B. That is, the number of samplings S matches the number of words W of one frequency of the storage device.
次に、多周波信号を発生させる時は、サンプリングデー
タを１２５μｓｅ晦に記憶装置から読み出すことによつ
て可能である。Next, a multi-frequency signal can be generated by reading the sampling data from the storage device every 125 μs.
これを第２図に示した１２５μｓｅｃをＮ多重で使用す
る例で説明する。This will be explained using an example shown in FIG. 2 in which 125 μsec is used in N multiplexing.
すなわちＮ多重中の第１多重のタイムスロットに（７０
０＋９００）Ｈ２の混合波（表１のＭＦＩ）のＰＣＭ信
号を得ようとする時は、第１多重のタイムスロット時に
記憶装置のＭＦＩが記憶されているアドレスを読み出す
ことによつて可能である。これをＷワード読み出せば（
時間にして１２５×Ｗｌｔｓｅｃ）、（７００＋９００
）Ｈ２の混合波の一周期が得られ、くり返えすことによ
つて連続ＰＣＭ信号が得られる。次に本発明方法を実施
する装置の例をあげて説明する。第３図は前記装置を示
したプロツク図である。That is, in the time slot of the first multiplex among N multiplexes (70
0+900)H2 mixed wave (MFI in Table 1) can be obtained by reading the address where the MFI is stored in the storage device during the first multiplex time slot. If you read this as W word (
125×Wltsec), (700+900
) One cycle of the mixed wave of H2 is obtained, and by repeating it, a continuous PCM signal is obtained. Next, an example of an apparatus for carrying out the method of the present invention will be explained. FIG. 3 is a block diagram showing the device.
この実施例においてオーダとしては次に示す信号がある
。１つはＮ多重中の何多重目に多周波信号を発生させる
かを示すアドレス信号であり、他の１つはアドレス指定
されたチヤンネルにどういう多周波信号を発生させるか
を示すデータ信号である〜
オーダがメモリコントロール部１に入ると、アドレス信
号とデータ信号が記憶されアドレス信号により第何多重
かを指示し、データ信号により記憶装置２のアドレスを
指定し読み出す。In this embodiment, the orders include the following signals. One is an address signal that indicates how many times out of N multiplexing the multifrequency signal is to be generated, and the other is a data signal that indicates what kind of multifrequency signal is to be generated in the addressed channel. ~ When an order enters the memory control section 1, an address signal and a data signal are stored, the address signal indicates the number of multiplexes, and the data signal specifies and reads out the address of the storage device 2.
記憶装置２から読み出されたデータはレジスタ３にセツ
トされ出力信号となる。メモリコントロール部１には次
のオーダがくるまで同一オーダを記憶しているので記憶
装置２をサイクリツクに読み出せば連続したＰＣＭ信号
が得られる。Data read from the storage device 2 is set in the register 3 and becomes an output signal. Since the same order is stored in the memory control section 1 until the next order arrives, continuous PCM signals can be obtained by reading out the memory device 2 cyclically.
次にメーク状態、ブレイク状態を作り出す時の動作を説
明する。Next, we will explain the operation when creating a make state and a break state.
オーダとして１番目には多周波信号を選び２番目に出力
がない（表１で言えばＭＦＯ）信号を選ぶ、次に３番目
には他の多周波信号を選び４番目にＭＦＯを選ぶ。これ
を交互に行えばメーク状態、ブレイク状態が作り出され
る。すなわち奇数番目にはメーク状態が得られ偶数番目
にはブレイク状態が得られる。次に実際使用される多周
波信号を例にとりこの方式を詳細に説明する。The first order is a multifrequency signal, the second is a signal with no output (MFO in Table 1), the third is another multifrequency signal, and the fourth is MFO. By doing this alternately, a make state and a break state are created. That is, a make state is obtained at the odd numbered state, and a break state is obtained at the even numbered state. Next, this method will be explained in detail using a multi-frequency signal that is actually used as an example.
例えば０３−４５２−１１１１を送出したい時はＫＰ，
Ｏ，３，４，５，２，ｌ，ｌ，ｌ，ｌ，ＳＴを発生させ
なければならない。具体的に述べると（１１００＋１７
００）Ｈｚ−ブレイク状態−（１３００＋１５００）Ｈ
ｚ−ブレイク状態−（９００＋１１００）Ｈｚブレイク
状態−（７００＋１３００）Ｈｚ−ブレイク状態−（９
００＋１３００）Ｈｚ−ブレイク状態−（７００＋１１
００）Ｈｚ−ブレイク状態−（７００＋９００）Ｈｚ−
ブレイク状態（７００＋９００）Ｈｚ−ブレイク状態−
（７００＋９００）Ｈｚ−ブレイク状態−（７００＋９
００）Ｈｚ−ブレイク状態−（９００＋１７００）Ｈｚ
−ブレイク状態となる信号を発生させる。第４図は上述
した信号を発生させるオーダのフローを示したものであ
る。For example, if you want to send 03-452-1111, KP,
O, 3, 4, 5, 2, l, l, l, l, ST must be generated. To be specific, (1100+17
00)Hz-Break state-(1300+1500)H
z - break state - (900 + 1100) Hz break state - (700 + 1300) Hz - break state - (9
00+1300) Hz - break state - (700+11
00)Hz-Break state-(700+900)Hz-
Break state (700+900)Hz - break state -
(700+900) Hz - break state - (700+9
00)Hz - break state - (900+1700)Hz
- Generate a signal that results in a break condition. FIG. 4 shows the order flow for generating the above-mentioned signals.
表１より、オーダとしてＭＦｌｌ→ＭＦＯ→ＭＦｌＯ→
ＭＦＯ→ＭＦ３→ＭＦＯ−＋ＭＦ４→ＭＦＯ→ＭＦ５→
ＭＦＯ→ＭＦ２→ＭＦＯ→ＭＦｌ→ＭＦＯ→ＭＦｌ→Ｍ
ＦＯ−＋ＭＦｌ→ＭＦＯ−＋ＭＦｌ→ＭＦＯと送れば第
４図に示したメーク状態、ブレイク状態とされた多周波
信号が発生する。以上説明したようにオーダを一定周期
で出すことによつてメーク状態、ブレイク状態を作り出
すことができ、メーク時間、ブレイク時間はオーダを送
る時間を設定してやれば希望の時間が得られる。From Table 1, the order is MFll→MFO→MFlO→
MFO→MF3→MFO-+MF4→MFO→MF5→
MFO→MF2→MFO→MFl→MFO→MFl→M
If FO-+MFl→MFO-+MFl→MFO is sent, a multi-frequency signal in the make state and break state shown in FIG. 4 is generated. As explained above, by issuing orders at regular intervals, it is possible to create a make state and a break state, and the desired make time and break time can be obtained by setting the time for sending orders.
以上説明したようにこの発明方式によれば、簡単にデイ
ジタル処理により多周波信号のメーク、ブレイク状態を
実現することができる。As explained above, according to the method of the present invention, it is possible to easily realize the make and break states of a multi-frequency signal through digital processing.
第１図は本発明方式の基本原理を説明するために記憶装
置内のメモリの割りつけを示す図、第２図は本発明の基
本動作を説明するために示した記憶装置内のメモリの読
み出す順序を示すグラフ、第３図は本発明方法を実施す
るための装置のプロツク図、第４図はメーク状態、ブレ
イク状態を作り出す状態を示すグラフである。
１・・・・・・メモリコントロール、２・・・・・・記
憶装置、３・・・・・・レジスタ。Fig. 1 is a diagram showing the allocation of memory in the storage device to explain the basic principle of the method of the present invention, and Fig. 2 is a diagram showing the memory allocation in the storage device to explain the basic operation of the invention. FIG. 3 is a graph showing the sequence, FIG. 3 is a block diagram of an apparatus for carrying out the method of the present invention, and FIG. 4 is a graph showing the conditions for creating a make state and a break state. 1...Memory control, 2...Storage device, 3...Register.
Claims (1)
憶装置で構成され、記憶装置のデータを読み出すオーダ
信号により多周波信号を発生させる多周波信号発生方式
であつて、前記オーダ信号を一定周期で送出し、前記記
憶装置の多周波信号データと無信号データを交互に読み
出し、メーク・ブレイクされた多周波信号を発生させる
ように構成した多周波信号発生方式。1 A multi-frequency signal generation method that is composed of a storage device that stores multi-frequency signal data and non-signal data, and generates a multi-frequency signal using an order signal for reading out data from the storage device, wherein the order signal is transmitted at a constant period. A multi-frequency signal generation system configured to transmit multi-frequency signal data and non-signal data from the storage device alternately to generate a make-break multi-frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53029003A JPS5929035B2 (en) | 1978-03-14 | 1978-03-14 | Multi-frequency signal generation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53029003A JPS5929035B2 (en) | 1978-03-14 | 1978-03-14 | Multi-frequency signal generation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54121607A JPS54121607A (en) | 1979-09-20 |
| JPS5929035B2 true JPS5929035B2 (en) | 1984-07-17 |
Family
ID=12264214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53029003A Expired JPS5929035B2 (en) | 1978-03-14 | 1978-03-14 | Multi-frequency signal generation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5929035B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5769967A (en) * | 1980-10-20 | 1982-04-30 | Sanyo Denki Kk | Power supply device for telephone signal |
| JPS5790183U (en) * | 1980-11-25 | 1982-06-03 |
-
1978
- 1978-03-14 JP JP53029003A patent/JPS5929035B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54121607A (en) | 1979-09-20 |
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