JPS61248668A - Encoding-error-recovery system for facsimile storage device - Google Patents

Encoding-error-recovery system for facsimile storage device

Info

Publication number
JPS61248668A
JPS61248668A JP60090694A JP9069485A JPS61248668A JP S61248668 A JPS61248668 A JP S61248668A JP 60090694 A JP60090694 A JP 60090694A JP 9069485 A JP9069485 A JP 9069485A JP S61248668 A JPS61248668 A JP S61248668A
Authority
JP
Japan
Prior art keywords
facsimile
storage device
image information
error
picture information
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
JP60090694A
Other languages
Japanese (ja)
Inventor
Kazuhisa Makihata
巻幡 和久
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 JP60090694A priority Critical patent/JPS61248668A/en
Publication of JPS61248668A publication Critical patent/JPS61248668A/en
Pending legal-status Critical Current

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  • Facsimile Image Signal Circuits (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To obtain a facsimile picture of high reliability by providing a coding- error recovering device in a facsimile storage device, executing error-check of a picture information transmitted with the recovering device, and thereby storing picture information whose errors are recovered. CONSTITUTION:The facsimile picture information transmitted from a facsimile transmission terminal equipment 1 is stored in a facsimile storage device 3, which thereafter is outputted to the coding-error-recovering device 4. The device 4 executes the error-correction on the picture information, and the picture information corrected of its errors is transmitted to the facsimile storage device 3, where the said information is stored. In the device 3, the picture information before the error-correction is deleted, and it later transmits the error-corrected picture information to the facsimile reception terminal 2.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ファクタiり蓄積装置に蓄えらnるファクシ
ミリ画情報に関し、特にファクシミリ蓄積装置に蓄える
ファクシミリ画情報の符号化v4シ回復回復力関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to facsimile image information stored in a factor storage device, and more particularly to encoding V4 recovery resilience of facsimile image information stored in a facsimile storage device.

従来の技術 従来、回線交換網を介したファクシミリ通信では、ファ
クシミリ画情報の符号化誤り回復力式は標準化されてお
らず、受信7アクシミIJ側で走査線めたシの画素数が
規定数以外の行は直上の走査線で記録したものを置換え
るか、又はその走査線を白で置換え、規定外の画素数の
走査線数が一定の値を越えた場合にはファクシミリ伝送
を打ち切る方式が一般に用いられている。ファクシミリ
蓄積交換によるファクシミリ通信じおいては、ファクシ
ミリ蓄積装置では、画素数が規定数以外の走査線が一定
数を越える場合には蓄積をせず、一定数以下の場合には
そのまま蓄積Tる方式、或いは全く画情報の検査を行な
わずに全て蓄積する方式%式% 発明が解決しようとする問題点 上述したファクシミリ蓄積交換での誤ル対策では、全く
画情報の検査を行なわずに、蓄積した場合、画素数が規
定数以外の走査線が一定数より多いファクタtり画情報
では、蓄積側から送信すると一般的な符号化誤り回後方
式を持つ受信ファクシミリ装置では、途中まで受信後に
ファクシミリ画像の中止を行なうことになり、経済的に
非効率的で受信ファクタtり装置の負荷の増大となる欠
点があシ、符号化誤り回復力式の備わってない受信ファ
クシミリ装置では、誤りの多い7アクシ考υ画情報をそ
のまま受信する欠点がある。画情報の画素数が規定数以
外の走査線数を検査する場合では、規定外画素数の走査
線数が一定値以下のファクシ建す画情報が蓄積され、そ
nが蓄積側から送信されると、符号化誤り回後方式の備
わってない受信ファクシミリ装置や、画素数が規定外の
走査線を白ラインで置換える受信ファクシミリ装置では
、規定外画素数の走査線数が一定値以下でも誤りの走査
線が連続した場合には再生した画面が見にくくなる欠点
がある。
Conventional technology In the past, in facsimile communication via a line-switched network, the coding error resilience formula for facsimile image information has not been standardized, and the number of pixels in the scanning line on the receiving 7 axis IJ side is outside the specified number. For the line above, replace the one recorded with the scanning line directly above, or replace that scanning line with white, and terminate the facsimile transmission if the number of scanning lines with an unspecified number of pixels exceeds a certain value. Generally used. In facsimile communication using facsimile storage and exchange, the facsimile storage device does not store data if the number of scanning lines with pixels other than the specified number exceeds a certain number, but if the number of pixels is less than a certain number, the data is stored as is. , or a method of storing all the image information without checking it at allProblems to be Solved by the InventionIn the above-mentioned measures against errors in facsimile storage and exchange, the method of storing all the image information without checking it at all In the case of factor t image information with more than a certain number of scanning lines with pixels other than the specified number, if it is sent from the storage side, a receiving facsimile machine with a general encoding error recovery method will not be able to send the facsimile image after receiving part way through. This has the disadvantage of being economically inefficient and increasing the load on the device due to the reception factor.Receiving facsimile devices that are not equipped with an encoding error resilience system are prone to errors. It has the disadvantage of receiving axis image information as is. When inspecting the number of scanning lines in which the number of pixels in image information is other than the specified number, facsimile image information in which the number of scanning lines with the number of pixels other than the specified number is less than a certain value is stored, and the image information is transmitted from the storage side. However, in receiving facsimile machines that are not equipped with an encoding error recovery method, or in receiving facsimile machines that replace scanning lines with a non-standard number of pixels with white lines, errors may occur even if the number of scanning lines with a non-standard number of pixels is less than a certain value. If the scanning lines are continuous, there is a drawback that the reproduced screen becomes difficult to see.

本発明は従来の技術に内在する上記欠点を解消する為に
なされたものであシ、従って本発明の目的は、受信ファ
クシミリ画像の□信頼性を向上させることかできるファ
クシミリ蓄積装置における新規な符号化誤り回復力式を
提供することにある。
The present invention has been made in order to eliminate the above-mentioned drawbacks inherent in the prior art.Therefore, an object of the present invention is to provide a new code for a facsimile storage device that can improve the reliability of received facsimile images. The purpose of this study is to provide error resilience formulas.

問題点を解決するための手段 上記目的を達成する為に、本発明に係るファクタ<’)
蓄積装置における符号化誤り回復方式は、複数のファク
シミリ端末を収容するファクシミリ蓄積装置において、
ファクシミリ蓄積装置に符号誤p回復装置を具備して構
成さn1フアクシミリ送信端末から送られた画情報を該
装置でエラーチェックを行なうことによりファクシミリ
蓄積装置内に誤ル回復さnた画情報を蓄積し、受信ファ
クシミリ端末装置にその誤り回復方式に関係なく、信頼
性の高いファクシミリ画像を提供することを性徴とする
Means for Solving the Problems In order to achieve the above object, the present invention takes into account factors <')
The encoding error recovery method in a storage device is a facsimile storage device that accommodates multiple facsimile terminals.
The facsimile storage device is equipped with a code error recovery device, and the image information sent from the facsimile transmission terminal is checked for errors by the device, and the image information with error recovery is stored in the facsimile storage device. However, its characteristic is to provide a highly reliable facsimile image to a receiving facsimile terminal regardless of its error recovery method.

実施例 次に、本発明をその好ましい一実施例について図面を参
照して具体的に説明する。
Embodiment Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

第1図は本発明の一実施例を示すブロック構成図である
。同図において、参照番号lはファクシミリ送信端末装
置、2はファクシミリ受信端末、3けファクシミリ蓄積
装置、4#′i符号誤り回復装置をそれぞn示す。
FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, reference number 1 indicates a facsimile transmitting terminal, 2 indicates a facsimile receiving terminal, a 3-digit facsimile storage device, and 4#'i code error recovery device.

ファクシミリ送信端末装置lから送信さnたファクシミ
リ画情報はファクシ建り蓄積装置3に蓄積さnlその後
に蓄積さnている画情報は符号誤り回復装@4に出力さ
れる。”符号誤り回復装置4では讐の画情報について誤
り訂正を行ない、誤り回復された画情報をファクシ著り
蓄積装置3に送シ、ファクシミリ蓄積装@3ではその誤
り回復さnた画情報を蓄積し、iAn回復前の画情報を
消去して新たに蓄積さnた誤り回復した画情報をその後
、7アクシ<す受信端末2へ送信する。
The facsimile image information transmitted from the facsimile transmitting terminal device l is stored in the facsimile data storage device 3, and the stored image information is then output to the code error recovery device @4. ``The code error recovery device 4 performs error correction on the enemy's image information, sends the error-recovered image information to the facsimile storage device 3, and the facsimile storage device 3 stores the error-recovered image information. Then, the image information before iAn recovery is deleted and the newly accumulated error-recovered image information is then transmitted to the receiving terminal 2 in 7 axes.

続いて、上述した符号誤り回復装置の構成及び動作例を
第2図により詳述する。第2図は符号誤り回復装@4Q
具体的なブロック構成例を示す−である。ファクシミリ
蓄積・装@3はファクシミリ送信端末装置llからファ
クシミリ画情報を受信すると、画情報出力要求情報を符
号誤p回復装置4のインターフェース部41に送信する
。符号誤p回復Mii<のインターフェース部41では
画情報出力要求を受信すると、受信準備が完了している
場合には、画情報受信時情報をファクシミリ蓄積装置3
に送信する。ファクタiり蓄積装置3は、画情報受信時
情報を受信すると、数走査分の画情報を符号+14シ囲
復装置4に送信する。送られる走査線数は符号誤9回復
装置i4内のバッファ42の容量による。符号誤゛り回
復装[14では受信した画情報をバッファ42に記憶す
る。続いて、その画情報の1走査線分がデコーダ43に
入力さn1元の画情報に   □復元さnlそれが符号
チェック部44に送らnb。
Next, the configuration and operation example of the code error recovery device described above will be explained in detail with reference to FIG. 2. Figure 2 shows code error recovery system @4Q
- indicates a specific block configuration example. Upon receiving the facsimile image information from the facsimile transmitting terminal device 11, the facsimile storage device @3 transmits image information output request information to the interface section 41 of the code error p recovery device 4. The interface unit 41 of the code error p recovery Mii
Send to. When the factor i storage device 3 receives the image information reception information, it transmits image information for several scans to the code+14 image recovery device 4. The number of scan lines sent depends on the capacity of the buffer 42 in the code error 9 recovery device i4. The code error recovery unit 14 stores the received image information in the buffer 42. Subsequently, one scanning line of the image information is input to the decoder 43, where it is restored to the original image information (nl) and sent to the code check unit 44 (nb).

符号チェック部44では入力された元の画情報の画素数
を算出し、そnが規定画素数の場合にi、符号チェック
部44iその走査線の復元前の画情報をレジースタ45
に送込ことを指示する。バッファ42カらレジスタ45
に画情報が送らnると、符号チェック部44ではレジス
タ45の画情報をインターフェース部41に出力するこ
とを指示し、レジスタ45の画情報がインターフェ−ス
部川を経由して7アクシ3に送らnる。元の画情報の画
素数 が規定画素数でない場合には、符号チェック部44けレ
ジスタ45にある直前の規定画素数走査線の画情報をイ
ンターフェース部41へ出力Tることを指示し、レジス
タ45にある画情報がインターフェース部41を経由し
てファクシミリ蓄積装@3に送られる。
The code check unit 44 calculates the number of pixels of the input original image information, and if n is the specified number of pixels, the code check unit 44i stores the unrestored image information of the scanning line in the register 45.
Instruct to send to. From buffer 42 to register 45
When the image information is sent to n, the code check section 44 instructs to output the image information in the register 45 to the interface section 41, and the image information in the register 45 is sent to the interface section 7 and 3. Sent to. If the number of pixels in the original image information is not the specified number of pixels, the code check unit 44 instructs the register 44 to output the image information of the previous scan line with the specified number of pixels stored in the register 45 to the interface unit 41; The image information in the image information is sent to the facsimile storage device @3 via the interface section 41.

賞、符号チェック部44は、バッファ42に記憶さnた
分の走査線をチェックすると、インターフェース部41
に画情報受信要求を送信することを指示し、インターフ
ェース部41はファクシミリ蓄積装W3に画情報受信要
求情報を送信する。ファクシミリ蓄積装@aVi、画情
報受信要求を受信すると、続く数走査線分の画情報を符
号誤り回復装置4に送信する。
After checking the n number of scanning lines stored in the buffer 42, the code checking section 44 checks the interface section 41.
The interface section 41 instructs the facsimile storage device W3 to send an image information reception request to the facsimile storage device W3. When the facsimile storage device @aVi receives the image information reception request, it transmits image information for the following several scanning lines to the code error recovery device 4.

又、第1行目の走査線が規定外画素数の場合には、符号
チェック部44はレジスタ45の内容の出力指示を行な
わずに、第2行目以降第i走査線が最初の規定画素数と
すると、その画情報をバッファ42からレジスタ45へ
転送を指示し、その画情報がバッファ42からレジスタ
45へ転送さnると、そのレジスタ45の画情報を1回
出力することを指示して第i走査線の画情報が1行分フ
ァクシミリ蓄積装置3へ送られる。
If the number of pixels in the first row of scanning lines is outside the specified number, the code check unit 44 does not instruct the output of the contents of the register 45, and the i-th scanning line in the second and subsequent rows is the first specified pixel number. If it is a number, it instructs to transfer the image information from the buffer 42 to the register 45, and when the image information is transferred from the buffer 42 to the register 45, it instructs to output the image information in the register 45 once. The image information of the i-th scanning line is sent to the facsimile storage device 3 for one line.

このようにして、画情報の誤り回復が行なわれ、ファク
シミリ蓄積装置3は、画情報の誤υ回復が終了すると画
情報の終了情卯を符号誤り回復装置4に送信して誤り回
復操作を終了する。
In this way, the image information error recovery is performed, and when the image information error recovery is completed, the facsimile storage device 3 transmits image information end information to the code error recovery device 4 and ends the error recovery operation. do.

発明の詳細 な説明したように、本発明によれば、ファクシミリ蓄積
装置に蓄積されたファクシミリ画情報をファクシミリ蓄
積装置に具備した符号誤り回復装置で誤り回復すること
によシ、ファクシミリ蓄積装置に収容されたファクシミ
リ端末の岨シ回復の方式、有無に拘わらず、送信ファク
シミリ端末からファクシミリ蓄積装置までの誤pは回復
さnるために受信ファクシミリ画像の信頼性を高めるこ
とがてきる。
DETAILED DESCRIPTION OF THE INVENTION According to the present invention, facsimile image information stored in a facsimile storage device is error-recovered by a code error recovery device provided in the facsimile storage device, and then stored in the facsimile storage device. Irrespective of the method used to recover the image of the facsimile terminal, the reliability of the received facsimile image can be improved because errors from the sending facsimile terminal to the facsimile storage device are recovered.

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

第1図は本発明によるファクシミリ蓄積装置における符
号化誤9回復力式の一実施例を示すブロック構成図、第
2図は第1図における符号誤り回復装置の詳細を示すブ
ロック構成図である。 l−・嗜ファクシミリ送信端末、2・・・ファクシミリ
受信端末、3・・・ファクシンり蓄積装置、4・争・符
号誤り回復装置、41 * *・インク−フェース部、
42・・eバッファ、43@・嗜デコ−1−144・参
〇符号チェック部、45Φ・・レジスタ
FIG. 1 is a block diagram showing an embodiment of a coding error recovery formula in a facsimile storage device according to the present invention, and FIG. 2 is a block diagram showing details of the code error recovery device in FIG. 1. l--Facsimile transmitting terminal, 2--Facsimile receiving terminal, 3--Fax storage device, 4-Dispute/code error recovery device, 41 * *- Ink face section,
42... e-buffer, 43@-Kyoudeco-1-144, 〇 sign check section, 45Φ... register

Claims (1)

【特許請求の範囲】[Claims] 複数のCCITT.T30手順に準拠するファクシミリ
端末を収容するファクシミリ蓄積装置において、ファク
シミリ蓄積装置に符号誤り回復装置を具備し、ファクシ
ミリ送信端末から送られた画情報を該符号誤り回復装置
でエラーチェックを行なうことによりファクシミリ蓄積
装置内に誤り回復された画情報を蓄積し、受信ファクシ
ミリ端末装置にその誤り回復方式に関係なく信頼性の高
いファクシミリ画像を提供することを特徴としたファク
シミリ蓄積装置における符号化誤り回復方式。
Multiple CCITT. In a facsimile storage device that accommodates a facsimile terminal that complies with the T30 procedure, the facsimile storage device is equipped with a code error recovery device, and the image information sent from the facsimile transmitting terminal is checked for errors by the code error recovery device. A coding error recovery method in a facsimile storage device, characterized in that error-recovered image information is stored in the storage device, and a highly reliable facsimile image is provided to a receiving facsimile terminal device regardless of its error recovery method.
JP60090694A 1985-04-25 1985-04-25 Encoding-error-recovery system for facsimile storage device Pending JPS61248668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60090694A JPS61248668A (en) 1985-04-25 1985-04-25 Encoding-error-recovery system for facsimile storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60090694A JPS61248668A (en) 1985-04-25 1985-04-25 Encoding-error-recovery system for facsimile storage device

Publications (1)

Publication Number Publication Date
JPS61248668A true JPS61248668A (en) 1986-11-05

Family

ID=14005633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60090694A Pending JPS61248668A (en) 1985-04-25 1985-04-25 Encoding-error-recovery system for facsimile storage device

Country Status (1)

Country Link
JP (1) JPS61248668A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801853A (en) * 1991-03-04 1998-09-01 Canon Kabushiki Kaisha Color image processing method and apparatus which calibrates correction data for image data
US6184915B1 (en) 1996-07-12 2001-02-06 Canon Kabushiki Kaisha Image processing apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801853A (en) * 1991-03-04 1998-09-01 Canon Kabushiki Kaisha Color image processing method and apparatus which calibrates correction data for image data
US6184915B1 (en) 1996-07-12 2001-02-06 Canon Kabushiki Kaisha Image processing apparatus and method

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