JPH04107022A - Digital data transmission system - Google Patents

Digital data transmission system

Info

Publication number
JPH04107022A
JPH04107022A JP22615190A JP22615190A JPH04107022A JP H04107022 A JPH04107022 A JP H04107022A JP 22615190 A JP22615190 A JP 22615190A JP 22615190 A JP22615190 A JP 22615190A JP H04107022 A JPH04107022 A JP H04107022A
Authority
JP
Japan
Prior art keywords
frame
bits
channels
digital data
data transmission
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.)
Pending
Application number
JP22615190A
Other languages
Japanese (ja)
Inventor
Yuzo Nakamura
有三 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP22615190A priority Critical patent/JPH04107022A/en
Publication of JPH04107022A publication Critical patent/JPH04107022A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To transmit channel data of 22 channels, which are two channels larger than a conventional X.50 frame, in a form of octet preservation by defining 6 frame bits as the start position of a frame and constituting channel data of 6 data bits and one status bit. CONSTITUTION:One frame consists of frame bits FRM indicating the start position of the frame and channel data CH1, CH2 to CH21, and CH22 of 22 channels, and FRM bits consist of 6 bits FA, FB, FC, FD, FE, and FF, and each channel data consists of one set of 6 data bits D11, D12, D13, D14, D15, and D16 and one status bit S1. By this frame constitution, digital data of 22 channels CH1 to CH22 is transmitted.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はディジタルデータ伝送方式に関し、特にオクテ
ツト多重方式のディジタルデータ伝送方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital data transmission system, and particularly to an octet multiplex digital data transmission system.

〔従来の技術〕[Conventional technology]

従来のオクテツト（６４ｋｂｉｔ／ｓチヤネルに対応す
る連続の８ビット単位）多重方式のディジタルデータ伝
送方式においてはＸ、５０フレームのフレーム構成を採
用していた。In the conventional octet (consecutive 8-bit units corresponding to a 64 kbit/s channel) multiplex digital data transmission system, a frame structure of X50 frames was adopted.

第２図は従来のＸ、５０フレームのフレーム構成図であ
る。第２図において、ｘ、５０フレームは２０チヤネル
分のチャネルデータ（ＣＨＩＯＩ　、ＣＨ１０２、ＣＨ
１０３，〜Ｃ）１１１９．ｃＨ１２０＞から成り、各チ
ャネルデータ例えばＣＨＩは１ビットのフレームビット
（Ｆｌ）と６ビットのデータビット（Ｄｌｌ、　Ｄ１２
゜Ｄ　１３＋　Ｄ１４＋　Ｄ　Ｉ５．Ｄ　Ｉ６＞と１ビ
ットのステータスビット（Ｓ＋　）とを１組として構成
されている。FIG. 2 is a frame configuration diagram of a conventional X50 frame. In Figure 2, x, 50 frames are channel data for 20 channels (CHIOI, CH102, CH
103,~C)1119. Each channel data, for example CHI, consists of 1 frame bit (Fl) and 6 data bits (Dll, D12
゜D 13+ D14+ DI5. DI6> and a 1-bit status bit (S+) as a set.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のＸ、５０フレームは、各チャネル毎にフ
レームビット１ビットを有しているので２０チヤネル分
しか伝送できないという欠点がある。The above-mentioned conventional X,50 frame has the disadvantage that it can only transmit 20 channels because each channel has one frame bit.

〔課題を解決するための手段〕[Means to solve the problem]

本発明のディジタルデータ伝送方式は、フレームの先頭
位置を示す６ビットのフレームビットと、６ビットのデ
ータビットと１ビットのステータスビットとをそれぞれ
組としたチャネルデータの２２チャネル分とで１フレー
ムを構成して伝送することを特徴とする。In the digital data transmission system of the present invention, one frame is composed of 6 frame bits indicating the start position of the frame, and 22 channels of channel data each consisting of a set of 6 data bits and 1 status bit. It is characterized in that it is configured and transmitted.

〔実施例〕〔Example〕

次に、本発明について第１図を参照して説明する。 Next, the present invention will be explained with reference to FIG.

第１図は本発明のディジタルデータ伝送方式の一実施例
を示すフレーム構成図である。FIG. 1 is a frame configuration diagram showing an embodiment of the digital data transmission system of the present invention.

第１図において、１フレームはフレームの先頭位置を示
すフレームビット（ＦＲＭ）と、２２チャネル分のチャ
ネルデータ（ＣＨＩ、ＣＨ２゜〜ＣＨ２１，ＣＨ２２）
とで構成され、ＦＲ，Ｍは６ビット（ＦＡ　、　ＦＢ　
、　Ｆｃ　、　Ｆｏ　、　ＦＥ　。In Fig. 1, one frame consists of a frame bit (FRM) indicating the start position of the frame and channel data for 22 channels (CHI, CH2° to CH21, CH22).
FR, M are 6 bits (FA, FB
, Fc, Fo, FE.

ＦＦ）から成り、各チャネルデータ例えばＣＨＩは６ビ
ットのデータビット（Ｄ　１□、Ｄ１□＋ＤＩＳ。Each channel data, for example CHI, consists of 6 data bits (D1□, D1□+DIS).

Ｄ１４＋　Ｄ１５ｒ　Ｄ１６　）と１ビットのステータ
スビット（Ｓｌ）を１組としている。D14+D15r D16) and one status bit (Sl) are set as one set.

このようなフレーム構成をとると、ＣＨＩ〜ＣＨ２２の
２２チャネル分のディジタルデータを伝送することが可
能となる。With such a frame configuration, it becomes possible to transmit digital data for 22 channels of CHI to CH22.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、フレームビット６ビット
をフレームの先頭位置とし、チャネルデータ６ビットの
データビットと１ビットのステータスビットで構成する
ことにより、従来のＸ。As explained above, the present invention uses 6 frame bits as the top position of the frame, and configures the channel data with 6 data bits and 1 status bit, thereby improving the conventional X.

５０フレームに比べ２チャネル分多い、つまり２２チャ
ネル分のチャネルデータをオクテツトを保存した形で伝
送できる効果がある。This has the advantage that channel data for 22 channels, which is 2 channels more than 50 frames, can be transmitted while preserving octets.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明のディジタルデータ伝送方式の一実施例
を示すフレーム構成図、第２図は従来のＸ、５０フレー
ムのフレーム構成図である。 ＣＨＩ、〜ＣＨ２２，ＣＨＩＯＩ、〜ＣＨ１２０・・・
チャネルデータ、ＦＲＭ・・・フレームビット。FIG. 1 is a frame configuration diagram showing an embodiment of the digital data transmission system of the present invention, and FIG. 2 is a frame configuration diagram of a conventional X, 50 frame. CHI, ~CH22, CHIOI, ~CH120...
Channel data, FRM...frame bit.

Claims (1)

【特許請求の範囲】[Claims] オクテット多重方式のディジタルデータ伝送方式におい
て、フレームの先頭位置を示す６ビットのフレームビッ
トと、６ビットのデータビットと１ビットのステータス
ビットとをそれぞれ組としたチャネルデータの２２チャ
ネル分とで１フレームを構成して伝送することを特徴と
するディジタルデータ伝送方式。In an octet multiplexing digital data transmission system, one frame consists of 6 frame bits indicating the start position of the frame, and 22 channels of channel data each consisting of a set of 6 data bits and 1 status bit. A digital data transmission method characterized by configuring and transmitting.
JP22615190A 1990-08-28 1990-08-28 Digital data transmission system Pending JPH04107022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22615190A JPH04107022A (en) 1990-08-28 1990-08-28 Digital data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22615190A JPH04107022A (en) 1990-08-28 1990-08-28 Digital data transmission system

Publications (1)

Publication Number Publication Date
JPH04107022A true JPH04107022A (en) 1992-04-08

Family

ID=16840662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22615190A Pending JPH04107022A (en) 1990-08-28 1990-08-28 Digital data transmission system

Country Status (1)

Country Link
JP (1) JPH04107022A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100756573B1 (en) * 2000-04-28 2007-09-07 스미또모 가가꾸 가부시끼가이샤 Method for manufacturing light guide plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100756573B1 (en) * 2000-04-28 2007-09-07 스미또모 가가꾸 가부시끼가이샤 Method for manufacturing light guide plate

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