Data transmission apparatus and method

Claim 2

A data transmission apparatus comprising: memory means for storing at least one structure data piece of a data processing device in a receiving data processing apparatus; transmission error detection code computation means for computing a transmission error detection code from the at least one structure data piece stored in said memory means; attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the at least one structure data piece stored in said memory means; transmitting means for transmitting to the receiving data processing apparatus, the at least one structure data to which the transmission error detection code is attached; reception means for receiving a retransmission request for each return structure data piece returned from the receiving data processing apparatus when a transmission error is detected based on the transmission error detection code and the at least one structure data piece transmitted by said transmission means; and retransmission means for retransmitting a corresponding structure data piece to the receiving data processing apparatus in response to the retransmission request for each return structure data piece received by said reception means.

Claim 3

The data transmission apparatus of claim 1, further comprising: second memory means for storing a correspondence between structure data and a memory location of the structure data in said memory means, wherein said retransmission means is responsive to the retransmission request for retransmitting structure data to be retransmitted based on the correspondence between the structure data and the memory location of the structure data, stored in said second memory means.

Claim 4

A data transmission apparatus comprising: memory means for storing a file containing at least one structure data piece of a data processing device in a receiving data transmission apparatus; structure data marking up means for marking up structure data from the file stored in said memory means; transmission error detection code computation means for computing a transmission error detection code from the structure data marked up by said structure data marking up means; attachment means for attaching the transmission error detection code computed by said transmission error detection code computation means to the structure data marked up by said structure data marking up means; transmission means for transmitting the structure data to which the transmission error detection code is attached, to the receiving data transmission apparatus; reception means for receiving a retransmission request for each return structure data piece returned from the receiving data transmission apparatus when a transmission error is detected based on the transmission error detection code and structure data transmitted by said transmission means; and means responsive to the retransmission request for each return structure data piece received by said reception means for retransmitting the corresponding structure data piece to the receiving data transmission apparatus.

Claim 5

A data transmission apparatus comprising: memory means for storing a file containing at least one structure data piece of a data processing device in a receiving data transmission apparatus; structure data marking up means for marking up structure data from the file stored in said memory means; transmission error detection code computation means for computing a transmission error detection code from the structure data marked up by said structure data marking up means; attachment means for attaching the transmission error detection code computed by said transmission error detection code computation means to the structure data marked up by said structure data marking up means; transmission means for transmitting the structure data to which the transmission error detection code is attached, to the receiving data transmission apparatus; reception means for receiving a retransmission request for each return structure data piece returned from the receiving data transmission apparatus when a transmission error is detected based on the transmission error detection code and structure data transmitted by said transmission means; and means responsive to the retransmission request for each return structure data piece received by said reception means for retransmitting the corresponding structure data piece to the receiving data transmission apparatus.

Claim 6

The data transmission apparatus of claim 3, wherein the at least one structure data piece in the file stored in said memory means in said data transmission apparatus begins with a top delimiter of a data separation indication code, and wherein said structure data marking up means marks up data between the top delimiter of the at least one structure data and a top delimiter of the next structure data in the file stored in said memory means, thereby marking up the at least one structure data.

Claim 7

The data transmission apparatus of claim 3, wherein the at least one structure data in the file stored in said memory means in said data transmission apparatus begins with a first delimiter of a data separation indication code and ends with a second delimiter, and wherein said structure data marking up means marks up data between the first delimiter and the second delimiter in the file stored in said memory means, thereby marking up the at least one structure data.

Claim 8

The data transmission apparatus of claim 5, wherein the file stored in said memory means in said data transmission apparatus is a document file described in a page description language, wherein the first delimiter of the at least one structure data is a delimiter indicating the top of a page, and wherein the second delimiter of the at least one structure data is a delimiter indicating the end of a page.

Claim 9

The data transmission apparatus of claim 3, wherein the file stored in said memory means in said data transmission apparatus is a document image file consisting of a plurality of pages, and wherein said structure data marking up means marks up a document image in the document image file stored in said memory means, thereby marking up the at least one structure data.

Claim 10

The data transmission apparatus of claim 3, wherein the file stored in said memory means is a document image file consisting of a plurality of division images, and wherein said structure data marking up means marks up an image in division image devices in the document image file stored in said memory means, thereby marking up the structure data.

Claim 11

The data transmission apparatus of claim 3, wherein the file stored in said memory means is a document image file consisting of image data for each color component, and wherein said structure data marking up means marks up an image in color component devices in the document image file stored in said memory means, thereby marking up the structure data.

Claim 12

The data transmission apparatus of claim 3, wherein the file stored in said memory means contains location information of structure data in the file, and wherein said structure data marking up means marks up structure data in response to the location information in the file stored in said memory means.

Claim 13

The data transmission apparatus of claim 3, wherein the file stored in said memory means is a document image file coded in layers, and wherein said structure data marking up means marks up coded data for each layer in the document image file stored in said memory means, thereby marking up the structure data.

Claim 14

A data transmission apparatus comprising: memory means for storing a file containing at least one primary structure data piece of a data processing device in a receiving data processing apparatus; structure data marking up means for marking up a plurality of primary contiguous structure data pieces from the file stored in said memory means as secondary structure data; transmission error detection code computation means for computing a transmission error detection code from the secondary structure data marked up by said structure data marking up means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the secondary structure data marked up by said structure data marking up means; transmission means for transmitting the secondary structure data to which the transmission error detection code is attached by said transmission error detection code attaching means to the receiving apparatus; reception means for receiving a retransmission request for each secondary structure data piece returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and secondary structure data transmitted by said transmission means; and retransmission means for retransmitting a corresponding secondary structure data piece to the receiving apparatus in response to the retransmission request for each secondary structure data piece received by said reception means.

Claim 15

A data transmission apparatus comprising: memory means for storing a file containing at least one primary structure data piece of a data processing device in a receiving data processing apparatus; structure data marking up means for marking up a plurality of primary contiguous structure data pieces from the file stored in said memory means as secondary structure data; transmission error detection code computation means for computing a transmission error detection code from the secondary structure data marked up by said structure data marking up means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the secondary structure data marked up by said structure data marking up means; transmission means for transmitting the secondary structure data to which the transmission error detection code is attached by said transmission error detection code attaching means to the receiving apparatus; reception means for receiving a retransmission request for each secondary structure data piece returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and secondary structure data transmitted by said transmission means; and retransmission means for retransmitting a corresponding secondary structure data piece to the receiving apparatus in response to the retransmission request for each secondary structure data piece received by said reception means.

Claim 16

A data transmission apparatus comprising: data processing means for processing data; reception means for receiving, from a sending apparatus, structure data to which a transmission error detection code is attached; detection means for detecting a transmission error based on the transmission error detection code and structure data received by said reception means; retransmission request creation means for creating a retransmission request for structure data when a transmission error is detected by said transmission error detection means for each structure data piece; and transmission means for returning, to the sending apparatus, the retransmission request created by said retransmission request creation means.

Claim 17

A data transmission apparatus comprising: data processing means for processing data; reception means for receiving, from a sending apparatus, structure data to which a transmission error detection code is attached; detection means for detecting a transmission error based on the transmission error detection code and structure data received by said reception means; retransmission request creation means for creating a retransmission request for structure data when a transmission error is detected by said transmission error detection means for each structure data piece; and transmission means for returning, to the sending apparatus, the retransmission request created by said retransmission request creation means.

Claim 18

The data transmission apparatus of claim 13, wherein the structure data received by said reception means begins with a delimiter of a data separation indicator code, and wherein said reception means receives data between the top delimiter of structure data and that of a next structure data as structure data.

Claim 19

The data transmission apparatus of claim 13, wherein the structure data received by said reception means begins with a top delimiter of a data separation indicator code and ends with an end delimiter, and wherein said reception means receives data between the top delimiter and the end delimiter as structure data.

Claim 20

The data transmission apparatus of claim 13, further comprising: control means for causing said data processing means to start processing when structure data having no error detected by said transmission error detection means is received.

Claim 21

A data transmission apparatus comprising: a sending data transmission apparatus for transmitting data, a receiving data transmission apparatus for receiving the data transmitted from said sending data transmission apparatus, and a data processing apparatus for processing the data received by said receiving data transmission apparatus, wherein said sending data transmission apparatus comprises: memory means for storing at least one structure data piece of a data processing device in a receiving data processing apparatus; transmission error detection code computing means for computing a transmission error detection code from the structure data stored in said memory means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the structure data stored in said memory means; and transmission means for transmitting the structure data to which the transmission error detection code is attached by said transmission error detection code attaching means to the receiving apparatus, and wherein said receiving data transmission apparatus comprises: reception means for receiving structure data to which the transmission error detection code is attached, transmitted by said transmission means in said sending data transmission apparatus; transmission error detection means for detecting a transmission error based on the transmission error detection code and the structure data received by said reception means; retransmission request creation means for creating a retransmission request of structure data when a transmission error is detected by said transmission error detection means for each structure data piece; and second transmission means for returning the retransmission request created by said retransmission request creation means to the sending apparatus, said sending data transmission apparatus, further includes: retransmission request reception means for receiving a retransmission request for each structure data piece returned from the second transmission means; and means responsive to the retransmission request received by said retransmission request reception means for retransmitting a corresponding structure data piece to the receiving apparatus.

Claim 22

A data transmission apparatus comprising: a sending data transmission apparatus for transmitting data, a receiving data transmission apparatus for receiving the data transmitted from said sending data transmission apparatus, and a data processing apparatus for processing the data received by said receiving data transmission apparatus, wherein said sending data transmission apparatus comprises: memory means for storing at least one structure data piece of a data processing device in a receiving data processing apparatus; transmission error detection code computing means for computing a transmission error detection code from the structure data stored in said memory means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the structure data stored in said memory means; and transmission means for transmitting the structure data to which the transmission error detection code is attached by said transmission error detection code attaching means to the receiving apparatus, and wherein said receiving data transmission apparatus comprises: reception means for receiving structure data to which the transmission error detection code is attached, transmitted by said transmission means in said sending data transmission apparatus; transmission error detection means for detecting a transmission error based on the transmission error detection code and the structure data received by said reception means; retransmission request creation means for creating a retransmission request of structure data when a transmission error is detected by said transmission error detection means for each structure data piece; and second transmission means for returning the retransmission request created by said retransmission request creation means to the sending apparatus, said sending data transmission apparatus, further includes: retransmission request reception means for receiving a retransmission request for each structure data piece returned from the second transmission means; and means responsive to the retransmission request received by said retransmission request reception means for retransmitting a corresponding structure data piece to the receiving apparatus.

Claim 23

A data transmission apparatus comprising: memory means for storing at least one structure data piece of a data processing device in a receiving apparatus; transmission device data division means for dividing structure data stored in said memory means into transmission device data for each device capacity applied when the structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; transmission means for transmitting, to the receiving apparatus, the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means; retransmission request reception means for receiving a retransmission request containing an identification code of transmission device data in the structure data returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and transmission device data transmitted by said transmission means; and retransmission means, responsive to the identification code in the structure data in the retransmission request received by said reception means, for retransmitting transmission device data corresponding to the identification code to the receiving apparatus.

Claim 24

A data transmission apparatus comprising: memory means for storing at least one structure data piece of a data processing device in a receiving apparatus; transmission device data division means for dividing structure data stored in said memory means into transmission device data for each device capacity applied when the structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; transmission means for transmitting, to the receiving apparatus, the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means; retransmission request reception means for receiving a retransmission request containing an identification code of transmission device data in the structure data returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and transmission device data transmitted by said transmission means; and retransmission means, responsive to the identification code in the structure data in the retransmission request received by said reception means, for retransmitting transmission device data corresponding to the identification code to the receiving apparatus.

Claim 25

A sending data transmission apparatus comprising: memory means for storing a file containing at least one structure data piece of a data processing device in a receiving apparatus; structure data marking up means for marking up structure data from the file stored in said memory means; transmission device data division means for dividing the structure data marked up by said structure data marking up means into transmission device data for each device capacity applied when the structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; transmission means for transmitting the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means, to the receiving apparatus; reception means for receiving retransmission request containing an identification code of the transmission device data in the structure data returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and transmission device data transmitted by said transmission means; and means responsive to the identification code in the structure data in the retransmission request received by said reception means for retransmitting the transmission device data corresponding to the identification code to the receiving apparatus.

Claim 26

A sending data transmission apparatus comprising: memory means for storing a file containing at least one structure data piece of a data processing device in a receiving apparatus; structure data marking up means for marking up structure data from the file stored in said memory means; transmission device data division means for dividing the structure data marked up by said structure data marking up means into transmission device data for each device capacity applied when the structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; transmission means for transmitting the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means, to the receiving apparatus; reception means for receiving retransmission request containing an identification code of the transmission device data in the structure data returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and transmission device data transmitted by said transmission means; and means responsive to the identification code in the structure data in the retransmission request received by said reception means for retransmitting the transmission device data corresponding to the identification code to the receiving apparatus.

Claim 27

The sending data transmission apparatus of claim 19, wherein the structure data in the file stored in said memory means in said sending data transmission apparatus begins with a top delimiter of a data separation indication code, and wherein said structure data marking up means marks up data between the top delimiter of the structure data and that of a next structure data in the file stored in said memory means, thereby marking up the structure data.

Claim 28

The sending data transmission apparatus of claim 19, wherein the structure data in the file stored in said memory means in said sending data transmission apparatus begins with a delimiter of a data separation indicator code and ends with a delimiter, and wherein said structure data marking up means marks up data between a top delimiter and a corresponding end delimiter in the file stored in said memory means, thereby marking up the structure data.

Claim 29

The sending data transmission apparatus of claim 31, wherein the file stored in said memory means in said sending data transmission apparatus is a document file described in a page description language, wherein the top delimiter of the structure data is a delimiter indicating the top of a page, and wherein the end delimiter of the structure data is a delimiter indicating the end of a page.

Claim 30

A receiving data transmission apparatus comprising: data processing means for processing data; reception means for receiving transmission device data of a transmission device capacity to which a transmission error detection code is attached, transmitted from a sending apparatus; transmission error detection means for detecting a transmission error based on the transmission device data and the transmission error detection code received by said reception means; retransmission request creation means for creating a retransmission request containing an identification code in the structure data when a transmission error is detected by said transmission error detection means; transmission means for returning the retransmission request, created by said retransmission request creation means, to the sending apparatus; memory means for storing the transmission device data received by said reception means; and structure data creation means for creating structure data from a plurality of transmission device data pieces stored in said memory means.

Claim 31

A receiving data transmission apparatus comprising: data processing means for processing data; reception means for receiving transmission device data of a transmission device capacity to which a transmission error detection code is attached, transmitted from a sending apparatus; transmission error detection means for detecting a transmission error based on the transmission device data and the transmission error detection code received by said reception means; retransmission request creation means for creating a retransmission request containing an identification code in the structure data when a transmission error is detected by said transmission error detection means; transmission means for returning the retransmission request, created by said retransmission request creation means, to the sending apparatus; memory means for storing the transmission device data received by said reception means; and structure data creation means for creating structure data from a plurality of transmission device data pieces stored in said memory means.

Claim 32

The receiving data transmission apparatus of claim 23, wherein at least one transmission device data piece received by said reception means in said receiving data transmission apparatus contains a top delimiter of a data separation indication code at a top of the structure data, and wherein said structure data creation means creates structure data from data between the top delimiter and a next delimiter in a plurality of transmission device data pieces stored in said memory means.

Claim 33

The receiving data transmission apparatus of claim 23, wherein at least one transmission device data piece received by said reception means in said receiving data transmission apparatus contains a top delimiter of a data separation indication code at a top of the structure data and at least another transmission device data piece contains an end delimiter at an end of the structure data, and wherein said structure data creation means creates structure data from data between the top delimiter and the end delimiter in a plurality of transmission device data pieces stored in said memory means.

Claim 34

The receiving data transmission apparatus of claim 25, wherein the top delimiter of the structure data received by said reception means in said receiving data transmission apparatus is a delimiter indicating the top of a page in a page description language and the end delimiter of the structure data is a delimiter indicating the end of a page.

Claim 35

The sending data transmission apparatus of claim 19 or 23, further comprising: second memory means for storing a correspondence between structure data and a memory location of the structure data in said memory means, wherein said retransmission means is responsive to the retransmission request for retransmitting structure data to be retransmitted based on the correspondence between the structure data and the memory location of the structure data, stored in said second memory means.

Claim 36

A data transmission apparatus comprising: memory means for storing a file containing at least one primary structure data piece of a data processing device in a receiving apparatus; structure data marking Up means for marking up a plurality of primary contiguous structure data pieces from the file stored in said memory means as secondary structure data; transmission device data division means for dividing the secondary structure data marked up by said structure data marking up means into transmission device data for each device capacity applied when the secondary structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; transmission means for transmitting to the receiving apparatus, the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means; reception means for receiving a retransmission request containing an identification code of the transmission device data in the secondary structure data returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and transmission device data transmitted by said transmission means; and retransmission means responsive to the identification code in the secondary structure data in the retransmission request received by said reception means for retransmitting the transmission device data corresponding to the identification code to the receiving apparatus.

Claim 37

A data transmission apparatus comprising: memory means for storing a file containing at least one primary structure data piece of a data processing device in a receiving apparatus; structure data marking Up means for marking up a plurality of primary contiguous structure data pieces from the file stored in said memory means as secondary structure data; transmission device data division means for dividing the secondary structure data marked up by said structure data marking up means into transmission device data for each device capacity applied when the secondary structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; transmission means for transmitting to the receiving apparatus, the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means; reception means for receiving a retransmission request containing an identification code of the transmission device data in the secondary structure data returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and transmission device data transmitted by said transmission means; and retransmission means responsive to the identification code in the secondary structure data in the retransmission request received by said reception means for retransmitting the transmission device data corresponding to the identification code to the receiving apparatus.

Claim 38

A data transmission apparatus comprising: a sending data transmission apparatus for transmitting data, a receiving data transmission apparatus for receiving the data transmitted from said sending data transmission apparatus, and a data processing apparatus for processing the data received by said receiving data transmission apparatus, wherein said sending data transmission apparatus comprises: memory means for storing at least one structure data piece of a data processing device in the data processing apparatus; transmission device data division means for dividing structure data stored in said memory means into transmission device data for each device capacity applied when the structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; and first transmission means for transmitting the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means to the receiving apparatus, and wherein said receiving data transmission apparatus comprises: first reception means for receiving transmission device data of a transmission device capacity to which the transmission error detection code is attached, transmitted by said first transmission means in said sending data transmission apparatus; transmission error detection means for detecting a transmission error based on the transmission device data and transmission error detection code received by said first reception means; retransmission request creation means for creating a retransmission request containing an identification code in the structure data when a transmission error is detected by said transmission error detection means; second transmission means for returning the retransmission request created by said retransmission request creation means to said sending data transmission apparatus; second memory means for storing the transmission device data received by said reception means; and structure data creation means for creating structure data from a plurality of transmission device data pieces stored in said second memory means, said sending data transmission apparatus further comprises: second reception means for receiving retransmission request containing an identification code of the transmission device data in the structure data returned from said transmission means in said receiving data transmission apparatus; and retransmission means responsive to the identification code in the structure data in the retransmission request received by said second reception means for retransmitting the transmission device data corresponding to the identification code to said receiving data transmission apparatus.

Claim 39

A data transmission apparatus comprising: a sending data transmission apparatus for transmitting data, a receiving data transmission apparatus for receiving the data transmitted from said sending data transmission apparatus, and a data processing apparatus for processing the data received by said receiving data transmission apparatus, wherein said sending data transmission apparatus comprises: memory means for storing at least one structure data piece of a data processing device in the data processing apparatus; transmission device data division means for dividing structure data stored in said memory means into transmission device data for each device capacity applied when the structure data is transmitted; transmission error detection code computation means for computing a transmission error detection code from the transmission device data into which the structure data is divided by said transmission device data division means; transmission error detection code attaching means for attaching the transmission error detection code computed by said transmission error detection code computation means to the transmission device data into which the structure data is divided by said transmission device data division means; and first transmission means for transmitting the transmission device data to which the transmission error detection code is attached by said transmission error detection code attaching means to the receiving apparatus, and wherein said receiving data transmission apparatus comprises: first reception means for receiving transmission device data of a transmission device capacity to which the transmission error detection code is attached, transmitted by said first transmission means in said sending data transmission apparatus; transmission error detection means for detecting a transmission error based on the transmission device data and transmission error detection code received by said first reception means; retransmission request creation means for creating a retransmission request containing an identification code in the structure data when a transmission error is detected by said transmission error detection means; second transmission means for returning the retransmission request created by said retransmission request creation means to said sending data transmission apparatus; second memory means for storing the transmission device data received by said reception means; and structure data creation means for creating structure data from a plurality of transmission device data pieces stored in said second memory means, said sending data transmission apparatus further comprises: second reception means for receiving retransmission request containing an identification code of the transmission device data in the structure data returned from said transmission means in said receiving data transmission apparatus; and retransmission means responsive to the identification code in the structure data in the retransmission request received by said second reception means for retransmitting the transmission device data corresponding to the identification code to said receiving data transmission apparatus.