JPH01158546A - Method for identifying variable-length block size - Google Patents
Method for identifying variable-length block sizeInfo
- Publication number
- JPH01158546A JPH01158546A JP62317976A JP31797687A JPH01158546A JP H01158546 A JPH01158546 A JP H01158546A JP 62317976 A JP62317976 A JP 62317976A JP 31797687 A JP31797687 A JP 31797687A JP H01158546 A JPH01158546 A JP H01158546A
- Authority
- JP
- Japan
- Prior art keywords
- block
- variable
- length
- reading
- size
- 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
Links
- 238000000034 method Methods 0.000 title claims description 6
- 238000010586 diagram Methods 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は可変長ブロックサイズ識別方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a variable length block size identification method.
従来、可変長ブロックファイルのブロックサ・イズ識別
には、ディレクトリにブロックサイズ情報を持たせるか
、ブロックの終りに終了識別子を設定している。Conventionally, to identify the block size of a variable-length block file, block size information is provided in the directory or an end identifier is set at the end of the block.
しかしながら、ディレクトリにブロックサイズ情報を持
たせる場合はディレクトリ制御機能が必要となる。また
、ブロックの終りに終了識別子を設定する場合は識別子
を認識するまでブロックサイズが分からない。However, if a directory has block size information, a directory control function is required. Furthermore, when setting an end identifier at the end of a block, the block size cannot be known until the identifier is recognized.
本発明の可変長ブロックサイズ識別方法は最初に記憶内
容の読出し対象となるサイズ固定の擬似ブロックに後続
する複数の可変長ブロックのそれぞれの先頭に自己の可
変長ブロックのサイズ情報を設定し、前記擬似ブロック
及び前記複数の可変長ブロックのそれぞれの記憶内容を
読出すとき、後続する可変長ブロックのサイズ情報を含
んで請出して事前に識別する構成である。The variable-length block size identification method of the present invention first sets the size information of its own variable-length block at the beginning of each of a plurality of variable-length blocks that follow a fixed-size pseudo block whose storage contents are to be read, and When reading the storage contents of each of the pseudo block and the plurality of variable length blocks, the configuration is such that size information of the subsequent variable length block is retrieved and identified in advance.
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 explained with reference to the drawings.
本発明の可変長ブロックサイズ識別方法の一実施例を示
す図を参照すると、可変長ブロックファイル１０内のサ
イズ固定ダミーブロック（第１ブロツク）１１は最初の
可変長実データブロック（第２ブロツク）１２を読込む
前にブロックサイズを抽出するために設けである。第１
ブロック読込み範囲１３は後続の第２ブロツク１２の先
頭に設定されたブロックサイズ情報１２０を含む。した
がって、第２ブロツク１２を読込む場合、第１ブロツク
１１を読込んだときに抽出したブロックサイズを読込み
エリアサイズとする。第２ブロック読込み範囲１４は可
変長ブロック（第３ブロツク）１５のブロックサイズ情
報１５０を含む。第３ブロツク１５を読込む場合、前の
第２ブロツク１２を読込んだときに抽出したブロックサ
イズを読込みエリアサイズとする。以下、同様であるが
、最終ブロック１６は読込み範囲１７として読込まれ
。Referring to a diagram showing an embodiment of the variable length block size identification method of the present invention, a fixed size dummy block (first block) 11 in a variable length block file 10 is a first variable length real data block (second block). This is provided to extract the block size before reading 12. 1st
The block reading range 13 includes block size information 120 set at the beginning of the subsequent second block 12. Therefore, when reading the second block 12, the block size extracted when reading the first block 11 is used as the reading area size. The second block reading range 14 includes block size information 150 of the variable length block (third block) 15. When reading the third block 15, the block size extracted when reading the previous second block 12 is used as the reading area size. The same applies hereafter, but the last block 16 is read as the read range 17.
.
る。最終ブロック１６の後のブロックは無いためブロッ
クサイズ情報に代替えしてストッパ情報１８０が読込ま
れる。Ru. Since there is no block after the last block 16, stopper information 180 is read in place of the block size information.
〔発明の効果〕
以上説明したように本発明によれば、可変長ブロックフ
ァイルのブロックの先頭にブロックサイズ情報を設定し
、可変長ブロックファイルよりブロックの記憶内容を読
込むときに後続のブロックのブロックサイズ情報も含め
て読込むことにより、事前に後のブロックサイズを識別
できるため、固定長ブロックファイルと同じ読込み処理
を行なえる。[Effects of the Invention] As explained above, according to the present invention, block size information is set at the beginning of a block of a variable-length block file, and when reading the memory contents of a block from the variable-length block file, the block size information is set at the beginning of a block of a variable-length block file. By reading in including block size information, the subsequent block size can be identified in advance, so the same reading process as for fixed-length block files can be performed.
図は本発明の一実施例を示す構成図である。
１０・・・可変長ブロックファイル、１１・・・サイズ
固定ダミーブロック、１２．１５．１６・・・可変長ブ
ロック、１３，１４．１７・・・ブロック読込み範囲、
１２０，１５０・・・ブロックサイズ情報、１８０・・
・ストッパ情報。
代理人 弁理士 内 原 晋The figure is a configuration diagram showing an embodiment of the present invention. 10... Variable length block file, 11... Fixed size dummy block, 12.15.16... Variable length block, 13, 14.17... Block reading range,
120, 150...Block size information, 180...
・Stopper information. Agent Patent Attorney Susumu Uchihara
Claims (1)
ブロックに後続する複数の可変長ブロックのそれぞれの
先頭に自己の可変長ブロックのサイズ情報を設定し、前
記擬似ブロック及び前記複数の可変長ブロックのそれぞ
れの記憶内容を読出すとき、後続する可変長ブロックの
サイズ情報を含んで読出して事前に識別することを特徴
とする可変長ブロックサイズ識別方法。First, the size information of the own variable-length block is set at the beginning of each of the plurality of variable-length blocks following the fixed-size pseudo-block whose storage contents are to be read, and A variable-length block size identification method characterized in that, when reading each storage content, size information of a subsequent variable-length block is included and read out for pre-identification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62317976A JPH01158546A (en) | 1987-12-15 | 1987-12-15 | Method for identifying variable-length block size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62317976A JPH01158546A (en) | 1987-12-15 | 1987-12-15 | Method for identifying variable-length block size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01158546A true JPH01158546A (en) | 1989-06-21 |
Family
ID=18094092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62317976A Pending JPH01158546A (en) | 1987-12-15 | 1987-12-15 | Method for identifying variable-length block size |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01158546A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180896A (en) * | 1989-12-09 | 1991-08-06 | Yamaha Corp | Data generating device of electronic musical instrument |
-
1987
- 1987-12-15 JP JP62317976A patent/JPH01158546A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180896A (en) * | 1989-12-09 | 1991-08-06 | Yamaha Corp | Data generating device of electronic musical instrument |
| JP2605434B2 (en) * | 1989-12-09 | 1997-04-30 | ヤマハ株式会社 | Electronic musical instrument data generator |
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