JP2001177544A5 - - Google Patents
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- JP2001177544A5 JP2001177544A5 JP1999361104A JP36110499A JP2001177544A5 JP 2001177544 A5 JP2001177544 A5 JP 2001177544A5 JP 1999361104 A JP1999361104 A JP 1999361104A JP 36110499 A JP36110499 A JP 36110499A JP 2001177544 A5 JP2001177544 A5 JP 2001177544A5
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- data transfer
- control device
- command packet
- transfer control
- data
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- 238000000034 method Methods 0.000 claims 2
Claims (9)
相手ノードから転送されてきたデータ転送オペレーション要求のための第１のコマンドパケットの処理中に上層のデバイスにエラーが発生した場合に、エラーステータスを相手ノードに転送するステータス転送手段と、
前記エラーステータスを受けた相手ノードからデータ転送オペレーション要求のための第２のコマンドパケットが転送されてきた場合に、前記第１のコマンドパケットの内容と前記第２のコマンドパケットの内容とを比較するコマンド比較処理、又は前記第１のコマンドパケットにより転送要求された転送データの先頭アドレスである第１のアドレスと前記第２のコマンドパケットにより転送要求された転送データの先頭アドレスである第２のアドレスとを比較するアドレス比較処理を行う比較手段と、
前記第１、第２のコマンドパケットが同一内容であると判断された場合、又は前記第１、第２のアドレスが同一であると判断された場合に、エラー発生時点のデータ転送の続きからデータ転送を再開する再開手段と、
を含むことを特徴とするデータ転送制御装置。A data transfer control device for transferring data between a plurality of nodes connected to a bus,
Status transfer means for transferring an error status to the counterpart node when an error occurs in the upper layer device during processing of the first command packet for the data transfer operation request transferred from the counterpart node;
When a second command packet for a data transfer operation request is transferred from the partner node that has received the error status, the contents of the first command packet and the contents of the second command packet are compared. Command comparison processing, or a first address that is a start address of transfer data requested by the first command packet and a second address that is a start address of transfer data requested by the second command packet A comparison means for performing address comparison processing for comparing
When it is determined that the first and second command packets have the same contents, or when the first and second addresses are determined to be the same, data is transferred from the continuation of the data transfer at the time of the error occurrence. Resuming means to resume the transfer;
A data transfer control device comprising:
前記第１、第２のコマンドパケットが同一内容でないと判断された場合、又は前記第１、第２のアドレスが同一でないと判断された場合には、前記第２のコマンドパケットが新規のコマンドパケットとして処理されることを特徴とするデータ転送制御装置。In claim 1,
When it is determined that the first and second command packets do not have the same contents, or when it is determined that the first and second addresses are not the same, the second command packet is a new command packet. A data transfer control device that is processed as follows.
前記ステータス転送手段が、
コマンドパケットの所与のフィールドに、データ転送を再開するアドレスを特定するための情報を書き込むことを特徴とするデータ転送制御装置。In claim 1 or 2,
The status transfer means is
A data transfer control device, wherein information for specifying an address at which data transfer is resumed is written in a given field of a command packet.
前記比較手段が、
エラー発生後に相手ノードから転送されてきたコマンドパケットの中で最初に転送されてきたデータ転送オペレーション要求のためのコマンドパケットを、前記第１のコマンドパケットの比較対象となる前記第２のコマンドパケットとして採用することを特徴とするデータ転送制御装置。In any one of Claims 1 thru | or 3,
The comparing means is
The command packet for the data transfer operation request transferred first from among the command packets transferred from the counterpart node after the error has occurred is used as the second command packet to be compared with the first command packet. A data transfer control device characterized by being adopted.
ＩＥＥＥ１３９４の規格に準拠したデータ転送を行うことを特徴とするデータ転送制御装置。In any one of Claims 1 thru | or 4,
A data transfer control device that performs data transfer conforming to the IEEE 1394 standard.
データ転送制御装置からエラーステータスが転送されてきた場合に、エラー発生前に転送されたデータ転送オペレーション要求のための第１のコマンドパケットと同一内容の第２のコマンドパケットを作成し、データ転送制御装置に転送要求する手段としてコンピュータを機能させるためのプログラムを含むことを特徴とする情報記憶媒体。 A computer-readable information storage medium storing a program for controlling data transfer with the data transfer control device according to any one of claims 1 to 5,
When an error status is transferred from the data transfer control device, a second command packet having the same content as the first command packet for the data transfer operation request transferred before the error occurs is created, and data transfer control is performed. An information storage medium comprising a program for causing a computer to function as a means for requesting transfer to an apparatus.
データ転送制御装置からエラーステータスが転送されてきた場合に、エラー発生前に転送された第１のコマンドパケットによるデータ転送を、エラー発生時点の続きから再開するための第２のコマンドパケットを作成し、データ転送制御装置に転送要求する手段としてコンピュータを機能させるためのプログラムを含むことを特徴とする情報記憶媒体。 A computer-readable information storage medium storing a program for controlling data transfer with the data transfer control device according to any one of claims 1 to 5,
When an error status is transferred from the data transfer control device, a second command packet is generated for resuming data transfer by the first command packet transferred before the error occurs from the continuation of the error occurrence point. An information storage medium comprising a program for causing a computer to function as means for requesting transfer to the data transfer control device.
前記データ転送制御装置及びバスを介して相手ノードから受信したデータに所与の処理を施す装置と、
処理が施されたデータを出力又は記憶するための装置とを含むことを特徴とする電子機器。A data transfer control device according to any one of claims 1 to 5,
A device that performs a given process on data received from a partner node via the data transfer control device and the bus; and
And an apparatus for outputting or storing processed data.
前記データ転送制御装置及びバスを介して相手ノードに転送するデータに所与の処理を施す装置と、
処理が施されるデータを取り込むための装置とを含むことを特徴とする電子機器。A data transfer control device according to any one of claims 1 to 5,
A device that performs a given process on the data transfer control device and data transferred to the counterpart node via the bus;
And an apparatus for capturing data to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36110499A JP3598924B2 (en) | 1999-12-20 | 1999-12-20 | Data transfer control device, information storage medium, and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36110499A JP3598924B2 (en) | 1999-12-20 | 1999-12-20 | Data transfer control device, information storage medium, and electronic device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001177544A JP2001177544A (en) | 2001-06-29 |
| JP3598924B2 JP3598924B2 (en) | 2004-12-08 |
| JP2001177544A5 true JP2001177544A5 (en) | 2005-02-17 |
Family
ID=18472222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36110499A Expired - Fee Related JP3598924B2 (en) | 1999-12-20 | 1999-12-20 | Data transfer control device, information storage medium, and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3598924B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4863754B2 (en) * | 2006-04-17 | 2012-01-25 | エスアイアイ・データサービス株式会社 | Order management system |
| JP5586934B2 (en) * | 2009-12-16 | 2014-09-10 | キヤノン株式会社 | Information processing method, information processing apparatus, and computer program |
-
1999
- 1999-12-20 JP JP36110499A patent/JP3598924B2/en not_active Expired - Fee Related
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