Patent EP0859326A2 successfully refreshed from Google Patents.
EP0859326A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Data transmission apparatus, system and method, and image processing apparatus
Assignee: Canon Inc
•
Filing: 1998-02-16
•
Granted: —
•
Expires: 2018-02-16
Abstract
Abstract In a system where a digital still camera 1101 is connected to a printer 1102 on a 1394 serial bus, when the digital still camera 1101 as a data transfer originator node transfers image data to the printer 1102 as a data transfer destination node, the printer 1102 sends information on the data processing capability of the printer 1102 to the digital still camera 1101 prior to data transfer. The digital still camera 1101 determines the block size of image data to be transferred in accordance with the data processing capability of the printer 1102, and sends image data of the block size to the printer 1102. The information indicates the capacity of a memory of the printer for storing print data, or the printing capability of a printer engine, i.e., printing resolution, printing speed and the like. Thus, data transfer is always efficiently performed regardless of the data processing capability of the printer 1102.
Inventors
- 👤 Jiro Tateyama
- 👤 Naohisa Suzuki
- 👤 Koji Fukunaga
- 👤 Kiyoshi Katano
- 👤 Atsushi Nakamura
- 👤 Makoto Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 10:33
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/40; H04L12/40052; H04L12/40058; G; G06; G06F; G06F13/00; G06F13/38; G06F13/42; G06F13/4282; G06F13/4291; G06F3/00; G06F3/12; G06F3/1201; G06F3/1202; G06F3/1211; G06F3/1223; G06F3/1229; G06F3/1232; G06F3/1237; G06F3/1244; G06F3/1247; G06F3/1278; G06F3/1284; G06F3/1293; H04L12/40117; H04L12/40123; H04N; H04N1/00; H04N1/00127; H04N1/00278; H04N1/00281; H04N1/00283; H04N1/32; H04N1/333; H04N1/33307; H04N1/33376; H04N21/00; H04N21/40; H04N21/41; H04N21/4104; H04N21/4108; H04N21/4117; H04N21/4135; H04N21/422; H04N21/4223; H04N21/43; H04N21/436; H04N21/43615; H04N21/4363; H04N21/43632; H04N21/442; H04N21/44231; H04L69/00; H04L69/18; H04N2201/00; H04N2201/0008; H04N2201/0015; H04N2201/0034; H04N2201/0074; H04N2201/0077; H04N2201/0084; H04N2201/32; H04N2201/333; H04N2201/33307; H04N2201/33314; H04N2201/33328; H04N2201/33342; H04N2201/33364; H04N2201/33378
Claims Analysis
Total Claims: 62
Claim 1
Independent Claim
93 words
A data transmission method for devices connected
by a serial bus, said method comprising the steps of: notifying processing capability information
indicative of a data processing capability of a
receiving device of data transfer, from said receiving
device to a transmitting device of the data transfer,
prior to start of the data transfer; determining a data block size of data to be
transferred by said transmitting device, in accordance
with the notified processing capability information;
and transmitting the data in the determined data
block size from said transmitting device to said
receiving device.
Claim 2
Dependent Claim
21 words
The method according to claim 1, wherein the
processing capability information indicates a capacity
of a memory for storing received data.
Claim 3
Dependent Claim
53 words
The method according to claim 2, wherein said
receiving device notifies address information
indicative of spatial addresses of data to be stored
in the memory, as a data request, to said transmitting
device, and wherein said transmitting device determines
the data block size based on the notified processing
capability information and address information.
Claim 4
Dependent Claim
24 words
The method according to claim 1, wherein the
processing capability information is printing
capability information indicative of a printing
capability of a printer engine.
Claim 5
Dependent Claim
22 words
The method according to claim 4, wherein the
printing capability information includes information
on resolution and/or printing speed of the printer
engine.
Claim 6
Dependent Claim
30 words
The method according to claim 1, wherein the
processing capability information includes information
on a memory size of a buffer for storing received data
and/or the number of available buffers.
Claim 7
Dependent Claim
50 words
The method according to claim 1, wherein the
serial bus is a bus adapted to or based on the IEEE
1394 standards or Universal Serial Bus standards,
where isochronous transfer and asynchronous transfer
can be performed, and wherein the data transfer is
performed by the isochronous transfer or asynchronous
transfer.
Claim 8
Dependent Claim
17 words
The method according to claim 7, wherein the
processing capability information is notified by the
asynchronous transfer.
Claim 9
Dependent Claim
22 words
The method according to claim 7, wherein a
response in the asynchronous transfer includes data
format information supported by said receiving device.
Claim 10
Dependent Claim
20 words
The method according to claim 9, wherein said
transmitting device transmits data formatted in
accordance with the data format information.
Claim 11
Dependent Claim
93 words
An image processing system having devices
connected by a serial bus, comprising: recognition means for recognizing processing
capability information indicative of an image-data
processing capability of a receiving device of image
data transfer, prior to the image data transfer; determination means for determining a data block
size of image data transmitted by a transmitting
device, in accordance with the processing capability
information recognized by said recognition means; and transfer means for sequentially transferring the
image data in the data block size determined by
determination means from said transmitting device to
said receiving device.
Claim 12
Dependent Claim
26 words
The system according claim 11, wherein the
processing capability information indicates a capacity
of a memory for storing received image data, included
in said receiving device.
Claim 13
Dependent Claim
54 words
The system according to claim 12, wherein said
recognition means notifies address information
indicative of spatial addresses of image data to be
stored in the memory, as a data request, to said
determination means, and wherein said determination means determines
the data block size based on the notified processing
capability information and address information.
Claim 14
Dependent Claim
35 words
The system according to claim 11, wherein said
receiving device is a printer, and wherein the processing capability
information is printing capability information
indicative of a printing capability of a printer
engine of the printer.
Claim 15
Dependent Claim
21 words
The system according to claim 14, wherein said
determination means determines the data block size
based on the printing capability information.
Claim 16
Dependent Claim
22 words
The system according to claim 14, wherein the
printing capability information includes information
on resolution and/or printing speed of the printer
engine.
Claim 17
Dependent Claim
30 words
The system according to claim 11, wherein the
processing capability information includes information
on a memory size of a buffer for storing received data
and/or the number of available buffers.
Claim 18
Dependent Claim
50 words
The system according to claim 11, wherein the
serial bus is a bus adapted to or based on the IEEE
1394 standards or Universal Serial Bus standards,
where isochronous transfer and asynchronous transfer
can be performed, and wherein the data transfer is
performed by the isochronous transfer or asynchronous
transfer.
Claim 19
Dependent Claim
17 words
The system according to claim 18, wherein the
processing capability information is notified by the
asynchronous transfer.
Claim 20
Dependent Claim
22 words
The system according to claim 18, wherein a
response in the asynchronous transfer includes data
format information supported by said receiving device.
Claim 21
Dependent Claim
20 words
The system according to claim 20, wherein said
transmitting device transmits data formatted in
accordance with the data format information.
Claim 22
Dependent Claim
62 words
An image processing apparatus for processing
image data received from a host device through a
serial bus, comprising: notification means for notifying processing
capability information indicative of an image-data
processing capability to said host device, prior to
image data transfer; and reception means for receiving image data, in a
data block size based on the processing capability
information, from said host device.
Claim 23
Dependent Claim
22 words
The apparatus according to claim 22, wherein the
processing capability information indicates a capacity
of a memory for storing received image data.
Claim 24
Dependent Claim
34 words
The apparatus according to claim 23, wherein
said notification means notifies address information
indicative of spatial addresses of image data to be
stored in the memory, as a data request, to said host
device.
Claim 25
Dependent Claim
36 words
The apparatus according to claim 22, wherein
said image processing apparatus is a printer, and wherein the processing capability
information is printing capability information
indicative of a printing capability of a printer
engine of the printer.
Claim 26
Dependent Claim
22 words
The apparatus according to claim 25, wherein the
printing capability information includes information
on resolution and/or printing speed of the printer
engine.
Claim 27
Dependent Claim
30 words
The apparatus according to claim 22, wherein the
processing capability information includes information
on a memory size of a buffer for storing received data
and/or the number of available buffers.
Claim 28
Dependent Claim
51 words
The apparatus according to claim 22, wherein the
serial bus is a bus adapted to or based on the IEEE
1394 standards or Universal Serial Bus standards,
where isochronous transfer and asynchronous transfer
can be performed, and wherein the image data transfer
is performed by the isochronous transfer or
asynchronous transfer.
Claim 29
Dependent Claim
17 words
The apparatus according to claim 28, wherein the
processing capability information is notified by the
asynchronous transfer.
Claim 30
Dependent Claim
23 words
The apparatus according to claim 28, wherein a
response in the asynchronous transfer includes data
format information supported by said image processing
apparatus.
Claim 31
Dependent Claim
20 words
The apparatus according to claim 30, wherein
said host device transmits data formatted in
accordance with the data format information.
Claim 32
Dependent Claim
29 words
The apparatus according to claim 22, wherein
said host device includes an image
recording/reproduction device such as a digital camera,
and a personal computer capable of modifying an image.
Claim 33
Dependent Claim
89 words
An image processing apparatus for processing
image data sent to a target device through a serial
bus, comprising: reception means for receiving processing
capability information indicative of an image-data
processing capability of said target device, prior to
image data transfer; determination means for determining a data block
size of image data to be transferred, in accordance
with the processing capability information received by
said reception means; and transmission means for sequentially transmitting
the image data in the data block size determined by
said determination means to said target device.
Claim 34
Dependent Claim
26 words
The apparatus according to claim 33, wherein the
processing capability information indicates a capacity
of a memory for storing received data, included in
said target device.
Claim 35
Dependent Claim
42 words
The apparatus according to claim 34, wherein
said determination means determines the data block
size based on address information indicative of
spatial addresses of the image data to be stored in
the memory, as a data request received by said
reception means.
Claim 36
Dependent Claim
35 words
The apparatus according to claim 33, wherein
said receiving device is a printer, and wherein the processing capability
information is printing capability information
indicative of a printing capability of a printer
engine of the printer.
Claim 37
Dependent Claim
20 words
The apparatus according to claim 36, said
determination means determines the data block size
based on the printing capability information.
Claim 38
Dependent Claim
22 words
The apparatus according to claim 36, wherein the
printing capability information includes information
on resolution and/or printing speed of the printer
engine.
Claim 39
Dependent Claim
30 words
The apparatus according to claim 33, wherein the
processing capability information includes information
on a memory size of a buffer for storing received data
and/or the number of available buffers.
Claim 40
Dependent Claim
51 words
The apparatus according to claim 33, wherein the
serial bus is a bus adapted to or based on the IEEE
1394 standards or Universal Serial Bus standards,
where isochronous transfer and asynchronous transfer
can be performed, and wherein the image data transfer
is performed by the isochronous transfer or
asynchronous transfer.
Claim 41
Dependent Claim
17 words
the apparatus according to claim 40, wherein the
processing capability information is notified by the
asynchronous transfer.
Claim 42
Dependent Claim
23 words
The apparatus according to claim 40, wherein a
response in the asynchronous transfer includes data
format information supported by said image processing
apparatus.
Claim 43
Dependent Claim
20 words
The apparatus according to claim 42, wherein
said transmission means transmits data formatted in
accordance with the data format information.
Claim 44
Dependent Claim
30 words
The apparatus according to claim 33, wherein
said image processing apparatus includes an image
recording/reproduction device such as a digital camera,
and a personal computer capable of modifying an image.
Claim 45
Dependent Claim
73 words
A data transmission method for host and target
devices connected by a serial bus, said method
comprising the steps of: transmitting data amount information indicative
of an amount of data to be transferred between said
host device and said target device by asynchronous
transfer; transferring the data in accordance with the
data amount information; and if next data transfer is performed, performing
the next data transfer without transmission of the
data amount information.
Claim 46
Dependent Claim
33 words
The method according to claim 45, wherein the
data amount information includes information on a size
of a buffer for receiving data, included in said
target device, or the number of available buffers.
Claim 47
Dependent Claim
23 words
The method according to claim 45, wherein said
target device continuously ensures a buffer for
receiving data based on the data amount information.
Claim 48
Dependent Claim
27 words
The method according to claim 45, wherein the
serial bus is a bus adapted to or based on the IEEE
1394 standards or Universal Serial Bus standards.
Claim 49
Dependent Claim
13 words
The method according to claim 45, wherein said
host device outputs image data.
Claim 50
Dependent Claim
22 words
The method according to claim 45, wherein said
target device forms a visible image based on image
data on a recording medium.
Claim 51
Dependent Claim
80 words
An image processing apparatus for processing
image data received from a host device through a
serial bus, comprising: communication means for communicating data
amount information indicative of an amount of data to
be transferred with said host device, by asynchronous
transfer; and reception means for receiving image data
transferred from said host device in accordance with
the data amount information, wherein if next data transfer is performed, the
next data transfer is performed without communication
of the data amount information.
Claim 52
Dependent Claim
29 words
The apparatus according to claim 51, wherein the
data amount information includes information on a size
of a buffer for storing received data or the number of
available buffers.
Claim 53
Dependent Claim
24 words
The apparatus according to claim 51, wherein
said image processing apparatus continuously ensures a
buffer for receiving data based on the data amount
information.
Claim 54
Dependent Claim
27 words
The apparatus according to claim 51, wherein the
serial bus is a bus adapted to or based on the IEEE
1394 standards or Universal Serial Bus standards.
Claim 55
Dependent Claim
13 words
The apparatus according to claim 51, wherein
said host device outputs image data.
Claim 56
Dependent Claim
24 words
The apparatus according to claim 51, further
comprising formation means for forming a visible image
based on the image data on a recording medium.
Claim 57
Dependent Claim
79 words
An image processing apparatus for processing
image data sent to a target device through a serial
bus, comprising: communication means for communicating data
amount information indicative of an amount of data to
be transferred with said target device, by
asynchronous transfer; and transmission means for transmitting image data
to said target device in accordance with the data
amount information, wherein if next data transfer is performed, the
next data transfer is performed without communication
of the data amount information.
Claim 58
Dependent Claim
30 words
The apparatus according to claim 57, wherein the
data amount information includes information on a
memory size of a buffer for storing received data or
the number of available buffers.
Claim 59
Dependent Claim
23 words
The apparatus according to claim 57, wherein
said target device continuously ensures a buffer for
receiving data based on the data amount information.
Claim 60
Dependent Claim
27 words
The apparatus according to claim 57, wherein the
serial bus is a bus adapted to or based on the IEEE
1394 standards or Universal Serial Bus standards.
Claim 61
Dependent Claim
14 words
The apparatus according to claim 57, wherein
said image processing apparatus outputs image data.
Claim 62
Dependent Claim
22 words
the apparatus according to claim 57, wherein
said target device forms a visible image based on
image data on a recording medium.
References Cited (Backward Citations)
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