JPS6240867A - Store and communication system - Google Patents

Store and communication system

Info

Publication number
JPS6240867A
JPS6240867A JP60181218A JP18121885A JPS6240867A JP S6240867 A JPS6240867 A JP S6240867A JP 60181218 A JP60181218 A JP 60181218A JP 18121885 A JP18121885 A JP 18121885A JP S6240867 A JPS6240867 A JP S6240867A
Authority
JP
Japan
Prior art keywords
memory
image information
sub
line
scanning line
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
JP60181218A
Other languages
Japanese (ja)
Inventor
Kuniaki Saito
斎藤 邦彰
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP60181218A priority Critical patent/JPS6240867A/en
Publication of JPS6240867A publication Critical patent/JPS6240867A/en
Pending legal-status Critical Current

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  • Facsimiles In General (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Storing Facsimile Image Data (AREA)

Abstract

PURPOSE:To prevent decline of store and communication service caused by memory-over in the store and communication of picture information, by detecting the continuity of the end of a memory and reducing the auxiliary scanning density of the picture information in the memory. CONSTITUTION:When a near-end detecting section 13 detects that the quantity of the stored data of a memory 9 reaches a fixed quantity, the detecting section 13 informs an auxiliary scanning density processing section 14 of it. When the processing section 14 reads the designated picture information from the memory 9 and erases the data of prescribed lines, the data stored in the memory 9 can be extensively reduced. When the erased lines are decoded to the same information as the picture information of the line just before and replaced to the original picture information, problems of memory-over can be dissolved.

Description

【発明の詳細な説明】 〔概要〕 画情報の蓄積通信において、メモリ蓄積限界(メモリオ
ーバ)が発生するとその通信サービスが停止する。
DETAILED DESCRIPTION OF THE INVENTION [Summary] When a memory storage limit (memory overflow) occurs in storage and communication of image information, the communication service is stopped.

本発明はメモリオーバの近接を検出し、蓄積している画
情報の副走査線密度を減少せしめ、その画情報に基づき
通信を行う蓄積通信方式を提供する。
The present invention provides a storage communication system that detects the proximity of memory overflow, reduces the sub-scanning line density of stored image information, and performs communication based on the image information.

〔産業上の利用分野〕[Industrial application field]

本発明は蓄積通信方式に係わり、特に蓄積データ量の削
減方法に関する。
The present invention relates to a storage communication system, and particularly to a method for reducing the amount of stored data.

ファクシミリ通信では、以下に示すように画情報の蓄積
を必要とする場合がある。即ち、同報・・画情報を一旦
蓄積した接界なった宛先へ同じ情報を送信する。
In facsimile communication, there are cases where it is necessary to store image information as shown below. That is, broadcasting...the same information is transmitted to the connected destinations where the image information has been stored once.

転送・・画情報をM積しながら受信し、受信終了後に指
定された宛先へ送信する。
Transfer: Receive image information while stacking it, and send it to the specified destination after receiving it.

集信・・画情報を蓄積しておき、特定の相手先に吸い取
ら・Iνる。
Collection: Image information is stored and transferred to a specific recipient.

メソセージ・・画情報を蓄積しておき、通信終了の際に
伝言として送信する。
Message: Stores image information and sends it as a message when communication ends.

等である。etc.

これらの蓄積通信において、画情報を蓄積しているとき
にメモリオーバが生じると、そのサービスを中断すると
か、副走査線密度を少なくして蓄積しなおす等の問題点
があった。
In these storage communications, if a memory overflow occurs while image information is being stored, there are problems such as interrupting the service or re-storing the image information by reducing the sub-scanning line density.

そのため−上記メモリオーバを解消する蓄積Bn信方式
が求められている。
Therefore, there is a need for a storage Bn communication system that eliminates the above memory overflow problem.

〔従来の技術〕[Conventional technology]

蓄積通信を行う従来のファクシミリ装置のブロック図を
第3図に示す。
FIG. 3 shows a block diagram of a conventional facsimile machine that performs storage communication.

画情報を送信する場合、読取部2によ/J読取った原稿
8の画情報は符号復号部4で符号化し、通信制御部6を
通じて相手先に送信し、 画情報を受信した場合は符号復号部4で復号して記録部
3で記録出力する。
When transmitting image information, the image information of the document 8 read by the reading unit 2 is encoded by the encoder/decoder 4 and transmitted to the other party via the communication controller 6. When the image information is received, it is encoded and decoded. The unit 4 decodes the data, and the recording unit 3 records and outputs it.

蓄積通信を行うときは−I−記のごとく読取ったpji
i情報、受信した画II’j報をメモリ5に蓄4I’1
1)た(多、前記サービスを行・)。
When performing storage communication, pji read as described in -I-
Store i information and received image II'j information in memory 5 4I'1
1) It was (many, performed the above service).

−に記蓄積ファクシミリ装置には、操作部(図示せず)
に副走査線密度を選択するキーがあり、J虐稿読取中に
メモリオーバが発生したとき乙:1副走査綿密度を低く
j巽択して再び蓄積しなおすか、または蓄積を中止して
いる。
- The storage facsimile machine has an operation section (not shown).
There is a key to select the sub-scanning line density, and if memory overflow occurs while reading a manuscript, select a lower sub-scanning line density and start accumulating again, or cancel the accumulation. There is.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

前記のごとく蓄積通信においてはメモリ容[−の限界で
メモリオーバ乙こなると、そのサービスを中断するか、
または原稿読取りの際副走査線密度を減少せしめて蓄積
しなおすという不便があった。
As mentioned above, in storage communication, if the memory capacity exceeds the limit, the service will be interrupted or
Alternatively, there is the inconvenience of reducing the sub-scanning line density and re-accumulating the data when reading the original.

そのため本発明は上記問題点に鑑め、メモリオーバ近接
を検出して蓄積した画情報の副走査線密度を減少せしめ
ることを目的としている。
Therefore, in view of the above problems, it is an object of the present invention to reduce the sub-scanning line density of accumulated image information by detecting near memory overflow.

〔問題点を解決するための手段〕[Means for solving problems]

−[−記目的のため、本発明の蓄積通信方式は第1図原
理説明図に示すように、 メモリ (9)の蓄積終了近接を検出する検出手段(1
0)と、 前記近接を検出したとき前記符号化画情報の所定副走査
線画情報を消去して該副走査線密度を減少せしめるとと
もに、復号可能なように再符号化する処理手段(11)
と、 直前のMす走査線画情報に復号せしめる符号を前記処理
された画情報の消去副走査線に挿入するとともに、該メ
モリの符号化画情報に置換する手段(12)と、 を備える。
-[-For the purpose of the present invention, the storage communication system of the present invention, as shown in the principle explanatory diagram of FIG.
0), processing means (11) for erasing predetermined sub-scanning line image information of the encoded image information to reduce the sub-scanning line density and re-encoding it so that it can be decoded when the proximity is detected;
and means (12) for inserting a code for decoding the immediately preceding M scanning line image information into the erased sub-scanning line of the processed image information and replacing it with encoded image information in the memory.

〔作用〕[Effect]

メモリ終了近接を検出したとき、蓄積中の画情報の副走
査線密度を例えば1/2にすると、データ量は1/2に
減少し、蓄積通信サービスを続行することができる。
When the near end of memory is detected, if the sub-scanning line density of the image information being stored is reduced to 1/2, for example, the amount of data is reduced to 1/2, and the storage and communication service can be continued.

そのため画情÷七を1副走査線(ライン)おきに消去し
て元の画情報と置換するが、一般に画情報は符号化され
て蓄積されているので、再符号化処理を行う。
Therefore, image information divided by seven is erased every other sub-scanning line (line) and replaced with the original image information, but since image information is generally encoded and stored, re-encoding processing is performed.

続いてライン画情報間に例えばVO(二次元符号化方式
における垂直モードの−って符lx; ++ 1”)を
挿入し、消去したラインを直前のライン画情報と同一情
報に受信側に復号−uしめる。
Next, for example, VO (- sign lx of vertical mode in two-dimensional encoding system; ++ 1") is inserted between the line image information, and the erased line is decoded to the same information as the previous line image information on the receiving side. -U close.

〔実施例〕〔Example〕

本発明の詳細を第2図に示す実施例に従って説明する。 The details of the present invention will be explained according to the embodiment shown in FIG.

第2図ta+は実施例を示すファクシミリ装置のブロッ
ク図である。図中、 13ばメモリ9の蓄積終了近接を検出するニアエンド検
出部、 14は副走査密度処理部であって、符N3化方式に基づ
きそれぞれ後述する処理を行うもの、】5はメモリ5の
画情報を読取り格納するとともに上記処理用のハソファ
、 であり、その化第3図と同一符号は同一対象物を表す。
FIG. 2 ta+ is a block diagram of a facsimile machine showing an embodiment. In the figure, reference numeral 13 indicates a near-end detection unit for detecting near end of storage in the memory 9, 14 indicates a sub-scanning density processing unit, which performs processing to be described later based on the N3 conversion method, and 5 indicates an image of the memory 5. This is a hardware sofa for reading and storing information as well as for the above-mentioned processing, and the same reference numerals as in FIG. 3 represent the same objects.

なお以下の動作説明でlj、1ラインおきに両情報を削
除する例を示す。
In the following operation description, an example will be shown in which both pieces of information are deleted every other line.

ニアエンド検出部13がメモリ9の格納データ量が一定
量に達したとき、副走査密度処理部14に通知する。
When the amount of data stored in the memory 9 reaches a certain amount, the near-end detection section 13 notifies the sub-scanning density processing section 14 .

副走査密度検出部14はメモリ9より、指定された画情
報を読取り以下の処理を行う。
The sub-scanning density detection section 14 reads designated image information from the memory 9 and performs the following processing.

(MR符号化方式) MR符号化方式は第1ラインが前ラインを参照しない符
号化データ(以下MHとする)、続く所定数のラインは
前ラインを参照した符号化データ(以下MRとする)の
ブロック(ブロックのライン数をにパラメータとして定
義する)が繰返されるものである。
(MR encoding method) In the MR encoding method, the first line is encoded data that does not refer to the previous line (hereinafter referred to as MH), and the following predetermined number of lines are encoded data that refers to the previous line (hereinafter referred to as MR). The block (the number of lines in the block is defined as a parameter) is repeated.

そのため、第2図(b)−11,1(K= 4.)に処
理フローチャート図に示すように、 nライン(n (MH))を復号 n+lラインをnラインを参照して復号1.1+2ライ
ンをn+lラインを参照して復号5.1+2ラインをn
ラインを参照して符号(n+2  (MR)) の処理を行い、n+1.n+3ラインをVOに置き換え
て n (MH) 、VO1n+2  (MR) 、VOの
順序でメモリ9の元画情報に置き換える。
Therefore, as shown in the processing flowchart in Fig. 2(b)-11,1 (K = 4.), the n line (n (MH)) is decoded and the n+l line is decoded with reference to the n line 1.1+2. Decode line by referring to n+l line 5.1+2 line by n
The process of code (n+2 (MR)) is performed with reference to the line n+1. The n+3 line is replaced with VO, and replaced with the original image information in the memory 9 in the order of n (MH), VO1n+2 (MR), and VO.

n=n+4として上記処理を繰り返す。The above process is repeated with n=n+4.

なお上記復号、符号化は符号復号部4に依頼して行うが
、別に設けてもよい。
Note that although the above decoding and encoding are performed by requesting the code/decoding section 4, they may be provided separately.

上記例はに=4について説明したが、K=2の場合は、
(MH)、  (MR)が繰返されるため、n (MH
)、VO,n+2 (MH)  ・・とすればよい。
In the above example, K = 4, but in the case of K = 2,
(MH), (MR) are repeated, so n (MH
), VO,n+2 (MH) .

(MMR符号化方式の場合〕 MMR符号化方式はに一無限大に相当するもので、■ラ
イン目が全白ラインを参照するほか、すべて前ラインを
参照しており、第2図(c)の処理フローチャート図に
示すように、順次連続する3ラインを読取り、復号して
所定ラインを消去するとともに1ライン前の復号画情報
を参照して符号化し、消去ラインにはvO符号を挿入す
る。
(In the case of MMR encoding method) The MMR encoding method corresponds to one infinity, and the ■ line refers to the all-white line and all the previous lines, as shown in Figure 2 (c). As shown in the processing flowchart, three consecutive lines are read and decoded to erase a predetermined line, and the decoded image information of the previous line is referred to for encoding, and a vO code is inserted into the erased line.

なおMMR符号化方式は同期信号が含まれていないので
、例えばA4サイズでは復号して1728画素数でライ
ンを識別する。
Note that since the MMR encoding method does not include a synchronization signal, for example, in A4 size, decoding is performed to identify lines using 1728 pixels.

前述のごと<、vO符号は1”で表されるので、所定ラ
インデータを消去すればメモリ9内の蓄積データを大幅
に減少せしめることができ、元画情報に置き換えること
によってメモリオーバを解消することができる。
As mentioned above, since the vO code is represented by 1'', the accumulated data in the memory 9 can be significantly reduced by erasing the predetermined line data, and memory overflow can be resolved by replacing it with the original image information. be able to.

なお第2図(a)において、副走査密度処理部14およ
びニアエンド検出部13は主制御部1に、バッファ15
はメモリ9に含めることができる。
Note that in FIG. 2(a), the sub-scanning density processing section 14 and the near-end detection section 13 are connected to the main control section 1, and the buffer 15
can be included in the memory 9.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明はメモリ終了近接を検出し
て、メモリ内の画情報の副走査密度を減少せしめるもの
で、読取画情報、転送画情報等任意に画情報の削減がで
き、メモリオーバによる蓄積通信サービスの低下を防止
できる効果がある。
As explained above, the present invention detects the near end of memory and reduces the sub-scanning density of the image information in the memory, making it possible to arbitrarily reduce image information such as read image information, transferred image information, etc. This has the effect of preventing deterioration of storage and communication services due to overload.

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

第1図は本発明の原理説明図、 Q                      M−
1’1第1図(atは実施例のファクシミリ装置のブロ
ック図、 第2図(b)はMR方式の処理フローチャート図、第2
図TelはMMR方式の処理フローチャート図、第3図
は従来例を示すファクシミリ装置のブロック図、 である。図中、 1は主制御部、   2は読取部、 3は記録部、    4は符号復号部、5はメモリ、 
    6は通信制御部、8は原稿、     9はメ
モリ、 10は蓄積終了近接検出手段、 11は副走査線密度処理手段、 12は符号挿入・置換手段、 13はニアエンド検出部、 14は副走査密度処理部、 15はバッファ、 である。
FIG. 1 is an explanatory diagram of the principle of the present invention, QM-
1'1 Fig. 1 (at is a block diagram of the facsimile machine of the embodiment, Fig. 2 (b) is a processing flowchart of the MR method,
Figure Tel is a processing flowchart of the MMR method, and Figure 3 is a block diagram of a conventional facsimile machine. In the figure, 1 is the main control unit, 2 is the reading unit, 3 is the recording unit, 4 is the code/decoding unit, 5 is the memory,
6 is a communication control unit, 8 is a document, 9 is a memory, 10 is an accumulation end proximity detection unit, 11 is a sub-scanning line density processing unit, 12 is a code insertion/replacement unit, 13 is a near-end detection unit, 14 is a sub-scanning density a processing unit; 15 is a buffer;

Claims (1)

【特許請求の範囲】 メモリに蓄積された符号化画情報の副走査線密度を減少
せしめて通信を行う蓄積通信方式であって、 上記メモリ(9)の蓄積終了近接を検出する検出手段(
10)と、 前記近接を検出したとき前記符号化画情報の所定副走査
線画情報を消去して該副走査線密度を減少せしめるとと
もに、復号可能なように再符号化する処理手段(11)
と、 直前の副走査線画情報に復号せしめる符号を前記処理さ
れた画情報の消去副走査線に挿入するとともに、該メモ
リの符号化画情報に置換する手段(12)と、 を備えることを特徴とする蓄積通信方式。
[Claims] A storage and communication method for communicating by reducing the sub-scanning line density of coded image information stored in a memory, comprising: a detection means (
10); and processing means (11) for erasing predetermined sub-scanning line image information of the coded image information to reduce the sub-scanning line density and re-encoding it so that it can be decoded when the proximity is detected;
and means (12) for inserting a code for decoding the immediately preceding sub-scanning line image information into the erased sub-scanning line of the processed image information and replacing it with encoded image information in the memory. A storage and communication method.
JP60181218A 1985-08-19 1985-08-19 Store and communication system Pending JPS6240867A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60181218A JPS6240867A (en) 1985-08-19 1985-08-19 Store and communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60181218A JPS6240867A (en) 1985-08-19 1985-08-19 Store and communication system

Publications (1)

Publication Number Publication Date
JPS6240867A true JPS6240867A (en) 1987-02-21

Family

ID=16096884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60181218A Pending JPS6240867A (en) 1985-08-19 1985-08-19 Store and communication system

Country Status (1)

Country Link
JP (1) JPS6240867A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01183266A (en) * 1988-01-16 1989-07-21 Ricoh Co Ltd Residual quantity indicating method for picture storage memory

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01183266A (en) * 1988-01-16 1989-07-21 Ricoh Co Ltd Residual quantity indicating method for picture storage memory

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