JP2004229011A - Image communication method and image communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve image recording of a received image file by a recording method corresponding to its color space. <P>SOLUTION: A record size is registered previously for a JPEG encoded file on an sYCC color space and when the color space information of an image file transmitted from a transmission side apparatus according to a previous procedure represents the JPEG encoded file on the sYCC color space (S32), the received image file is recorded with a registered record size (S38). <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

この表によれば、ＤＩＳ／ＤＴＣ信号におけるＦＩＦの第６８ビットにより、Ｌａｂ色空間上のＪＰＥＧ符号化データの受信機能の有無を通知し、ＤＣＳ信号におけるＦＩＦの６８ビットにより、Ｌａｂ色空間上のＪＰＥＧ符号化データによる送信を指定をする。
【００２３】
また、ＤＩＳ／ＤＴＣ信号におけるＦＩＦの第６９ビットにより、Ｌａｂ色空間上のフルカラー受信機能の有無を通知し、ＤＣＳ信号におけるＦＩＦの第６９ビットにより、Ｌａｂ色空間上のフルカラー送信を指定をする。
【００２４】
また、ＤＩＳ／ＤＴＣ信号におけるＦＩＦの第Ｘビットにより、ｓＹＣＣ色空間上のＪＰＥＧ符号化データの受信機能の有無を通知し、ＤＣＳ信号におけるＦＩＦの第Ｘビットにより、ｓＹＣＣ色空間上のＪＰＥＧ符号化データによる送信を指定をする。
【００２５】
なお、図１に示すファクシミリ装置内のＲＯＭ２４には、本実施形態における特徴的な受信処理を制御する制御プログラムが格納されている。以下、この制御プログラムによる受信処理について、図２乃至図４のフローチャートを参照して、詳細に説明する。
【００２６】
●受信制御説明
まず、図２のステップＳ２においてバス２６を介してメモリ１８をイニシャライズした後、ステップＳ４において、バス２６を介して操作部２０における表示をクリアし、ステップＳ６でバス２６を介してＮＣＵ２のＣＭＬをオフする、すなわち電話回線２ａを電話機４側に接続する。
【００２７】
そしてステップＳ８において操作部２０による入力情報に基づいて、ｓＹＣＣ色空間上のＪＰＥＧ符号化データ受信時における、プリント時の記録サイズ登録が選択されたか否かを判断し、選択されていればステップＳ１０に進み、選択されていなければステップＳ１２に進む。ステップＳ１０では、ｓＹＣＣ色空間上のＪＰＥＧ符号化データ受信時におけるプリントサイズとして、特定サイズをバス２６を介してメモリ１８に記憶する。この特定サイズは操作部２０からの入力情報として得られ、例えばＡ６サイズ等が登録される。
【００２８】
ステップＳ１２では、ファクシミリ受信が選択されたか否かを判断し、選択されていればステップＳ１６に進み、選択されていなければステップＳ１４に進んでその他の処理を実行した後、ステップＳ６に戻る。
【００２９】
ステップＳ１６では、バス２６を介してＮＣＵ２のＣＭＬをオンとする、すなわち電話回線２ａをファクシミリ装置側に接続する。そして図３のステップＳ１８において通信の前手順を行うが、このとき、ＤＩＳ信号におけるＦＩＦの６８，６９，Ｘビットを全て１にセットすることによって、Ｌａｂ色空間によるＪＰＥＧ符号化フルカラーデータ、及びｓＹＣＣ色空間によるＪＰＥＧ符号化データを受信可能である旨を、送信側装置へ通知する。
【００３０】
●Ｌａｂ色空間によるデータ受信
そしてステップＳ２０において、前手順により送信側装置から通知されたＤＣＳ信号におけるＦＩＦの６８，６９ビットがともに１であるか否か、すなわち、Ｌａｂ色空間におけるＪＰＥＧ符号化フルカラーデータの送信が指定されているか否かを判断し、ともに１であればステップＳ２２に進むが、少なくともいずれかが１でなければステップＳ２６に進む。
【００３１】
ステップＳ２２ではＬａｂ色空間でのＪＰＥＧ符号化フルカラーデータを受信し、これを先のＤＣＳ信号により指定されたサイズ及び解像度でプリントし、ステップＳ２４で後手順を行ってステップＳ６へ戻る。
【００３２】
一方、ステップＳ２６ではＤＣＳ信号におけるＦＩＦの６８ビットが１であるか否かが判断され、これが１であればすなわち、Ｌａｂ色空間におけるＪＰＥＧ符号化グレイスケールデータの送信が指定されていると判断され、ステップＳ２８に進む。ステップＳ２８では、Ｌａｂ色空間でのＪＰＥＧ符号化グレイスケールデータを受信し、これを先のＤＣＳ信号により指定されたサイズ及び解像度でプリントし、ステップＳ３０で後手順を行ってステップＳ６へ戻る。
【００３３】
●ｓＹＣＣ色空間によるデータ受信
一方、ステップＳ２６においてＤＣＳ信号におけるＦＩＦの６８ビットが１でなければ図４のステップＳ３２に進み、ＤＣＳ信号のＦＩＦのＸビットが１であるか否か、すなわちｓＹＣＣ色空間におけるＪＰＥＧ符号化データの送信が指定されているか否かを判断し、１であればステップＳ３８に進むが、１でなければ本機では受信解析不可能であるとしてステップＳ３４に進み、モノクロ２値情報としての受信、及びＤＣＳ信号によって指定されたサイズ及び解像度によるプリント処理を行った後、ステップＳ３６で後手順を行ってステップＳ６へ戻る。
【００３４】
ステップＳ３８では、ｓＹＣＣ色空間上のＪＰＥＧ符号化データを受信し、これをメモリ１８に登録されている特定サイズで、記録回路１６によりプリントする。ここで、例えば特定サイズがＡ６サイズであれば、Ａ４サイズの記録紙上に４ｉｎ１形式でのプリントを行うように、受信データを変倍する。なおこのとき、特定サイズの記録を行った旨を示すメッセージまたは特定マーク等を付加して、プリントする。そしてステップＳ４０で後手順を実行した後、ステップＳ６へ戻る。
【００３５】
以上説明したように本実施形態によれば、ｓＹＣＣ色空間上のＪＰＥＧフルカラーデータを受信した際に、送信側装置から解像度及びプリントサイズの指定はなく、画素数のみが指定されていた場合であっても、ユーザが予め設定した特定サイズによるプリントを行うことが可能となった。
【００３６】
また、特定サイズによるプリントである旨を明記することにより、ユーザによる認識が容易となり、操作性が向上する。
【００３７】
＜他の実施形態＞
なお、本発明は、例えばシステム、装置、方法、プログラムもしくは記憶媒体等としての実施態様をとることが可能であり、具体的には、複数の機器（例えばホストコンピュータ、インタフェイス機器、リーダ、プリンタなど）から構成されるシステムに適用しても、一つの機器からなる装置（例えば、複写機、ファクシミリ装置など）に適用しても良い。
【００３８】
また、本発明の目的は、前述した実施形態の機能を実現するソフトウェアのプログラムコードを記録した記憶媒体を、システムあるいは装置に供給し、そのシステムあるいは装置のコンピュータ（またはＣＰＵまたはＭＰＵ）が記憶媒体に格納されたプログラムコードを読み出し実行することによっても達成されることは言うまでもない。
【００３９】
この場合、記憶媒体から読み出されたプログラムコード自体が前述した実施形態の機能を実現することになり、そのプログラムコードを記憶した記憶媒体は本発明を構成することになる。
【００４０】
プログラムコードを供給するための記憶媒体としては、例えば、フロッピー（登録商標）ディスク、ハードディスク、光ディスク、光磁気ディスク、ＣＤ−ＲＯＭ、ＣＤ−Ｒ、磁気テープ、不揮発性のメモリカード、ＲＯＭなどを用いることが出来る。
【００４１】
また、コンピュータが読み出したプログラムコードを実行することにより、前述した実施形態の機能が実現されるだけでなく、そのプログラムコードの指示に基づき、コンピュータ上で稼動しているＯＳ（オペレーティングシステム）などが実際の処理の一部を行い、その処理によって前述した実施形態の機能が実現される場合も含まれることは言うまでもない。
【００４２】
さらに、記憶媒体から読み出されたプログラムコードが、コンピュータに挿入された機能拡張ボードやコンピュータに接続された機能拡張ユニットに備わるメモリに書き込まれた後、そのプログラムコードの指示に基づき、その機能拡張ボードや機能拡張ユニットに備わるＣＰＵなどが実際の処理の一部または全部を行い、その処理によって前述した実施形態の機能が実現される場合も含まれることは言うまでもない。
【００４３】
【発明の効果】
以上説明したように本発明によれば、受信した画像ファイルについて、その色空間に応じた記録方法によって画像記録を行うことができる。
【図面の簡単な説明】
【図１】本発明に係る一実施形態が適用されるファクシミリ装置の構成を示すブロック図である。
【図２】本実施形態における受信処理を示すフローチャートである。
【図３】本実施形態における受信処理を示すフローチャートである。
【図４】本実施形態における受信処理を示すフローチャートである。
【符号の説明】
２ ＮＣＵ
４ 電話機
６ ハイブリッド回路
８ 変復調器
１０ 発呼回路
１２ 加算回路
１４ 読み取り回路
１６ 記録回路
１８ メモリ回路
２０ 操作部
２２ ＣＰＵ
２４ ＲＯＭ
２６ バス
２８ カードインターフェイス
３０ コンパクトフラッシュ（登録商標）カード[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image communication technique for communicating color image data.
[0002]
[Prior art]
In a conventional facsimile apparatus capable of communicating color information, the standard is based on ITU-T Recommendation T.40. 30, T.I. 4, T. 81, T.R. The communication is performed based on the color image data in the color space Lab.
[0003]
2. Description of the Related Art With the spread of digital cameras and the like in recent years, there is an increasing need to transmit image information captured by a digital still camera as it is using a facsimile protocol. Here, usually, the color space used in the digital camera is not Lab but sYCC. Therefore, a protocol that allows JPEG encoded information of color image data in the sYCC color space to be transmitted as it is has been studied.
[0004]
Here, when JPEG full-color transmission in the sYCC color space is considered, basically, the transmission target is not the color original information, but a file photographed by a digital still camera and stored in a CompactFlash (registered trademark) card. Often information. Therefore, it is conceivable that the color original information is transmitted in the Lab color space, the image information is photographed by a digital still camera or the like, and the file information stored in the CompactFlash (registered trademark) card is transmitted in the sYCC color space.
[0005]
[Problems to be solved by the invention]
However, when the receiving apparatus receives a JPEG encoded file in the sYCC color space, there is no problem in storing this file information on a CompactFlash (registered trademark) card, but it is not possible to print this on a recording medium. In that case, there was no clear regulation on the printing method. For example, when only the number of pixels of a JPEG encoded file is specified from the transmitting side device and its resolution, print size, and the like are not specified, how to actually perform printing is undefined. Was.
[0006]
The present invention has been made to solve the above-described problem, and has as its object to record an image of a received image file by a recording method corresponding to the color space.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a method for communicating color image information between a transmitting device and a receiving device, comprising the steps of: receiving a color space of an image file transmitted from the transmitting device at the receiving device; Receiving the information, determining a recording method of the received image file based on the color space information, and recording the received image file according to the determined recording method.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the present invention, when color image information is communicated between a transmitting device and a receiving device, the receiving device receives color space information of an image file transmitted from the transmitting device, and A recording method of the received image file is determined based on the information, and the received image file is recorded by the determined recording method. A recording method (recording size, etc.) of the image file on a predetermined color space is determined. ) Is registered, and when the color space information indicates a predetermined color space, the recording method of the received image file is determined to be the registered recording method. The predetermined color space is the sYCC color space, and if the color space information does not indicate the predetermined color space, the recording method of the received image file is determined to be the recording method specified in the received file.
[0009]
The color space information includes information indicating whether to transmit JPEG encoded data in the Lab color space, information indicating whether to transmit full color information in the Lab color space, and information indicating whether to transmit JPEG encoded data in the Lab color space. Information indicating whether or not to transmit JPEG encoded data, which is notified by the FIF of the DCS signal from the transmitting apparatus in the pre-procedure. Further, the receiving side apparatus uses the FIF of the DIS signal in the pre-procedure to indicate whether or not there is a function of receiving JPEG encoded data in the Lab color space and information which indicates whether or not there is a function of receiving full color information in the Lab color space. And information indicating whether or not there is a function of receiving JPEG encoded data on the sYCC color space.
[0010]
When the received image file is recorded by a recording method registered in advance, information indicating that fact is added and recorded.
[0011]
The present invention can be realized in the configuration and processing specifically shown in the drawings attached to the application corresponding to the following embodiments.
[0012]
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0013]
<First embodiment>
FIG. 1 is a block diagram showing the configuration of a facsimile apparatus to which the present embodiment is applied. In the figure, reference numeral 2 denotes an NCU (Network Control Unit) which connects a telephone network to a terminal of the line in order to use the telephone network for data communication and the like, controls connection of a telephone switching network, switches to a data communication path, and loops. Is held. Under control of the bus 26, the NCU 2 connects the telephone line 2a to the line 2b on the telephone 4 side (CML off) or connects to the line 2c on the facsimile apparatus side (CML on). The telephone line 2a is connected to the telephone 4 in a normal state.
[0014]
Reference numeral 6 denotes a hybrid circuit that separates a transmission system signal and a reception system signal, and sends the transmission signal from the addition circuit 12 to the telephone line 2a via the NCU 2. Also, a signal from the other party is received via the NCU 2 and sent to the modem 8 via the signal line 6a.
[0015]
Reference numeral 8 denotes a modulator / demodulator. 8, V. 21, V.I. 27ter, V.I. 29, V.I. 17, V.I. 34, and performs modulation and demodulation. Each transmission mode is specified to the modem 8 under the control of the bus 26, and a transmission signal from the bus 26 is input to output modulated data to the signal line 8a, or a reception signal from the signal line 6a is input to the modulation mode. The demodulated data is output to the bus 26 or the like.
[0016]
A calling circuit 10 inputs telephone number information by a signal from the bus 26 and outputs a DTMF selection signal to the signal line 10a. Reference numeral 12 denotes an adder circuit, which inputs information from the signal line 8a and information from the signal line 10a, and outputs a result of the addition to the signal line 12a.
[0017]
A reading circuit 14 is capable of reading a color image, and outputs the read color image data to a bus 26. A recording circuit 16 is capable of recording a color image, and sequentially records information output to the bus 26 line by line.
[0018]
Reference numeral 18 denotes a work memory circuit (RAM) that stores raw information or encoded information of read data, and stores received information or decoded information via a bus 26. In the memory 18, the recording size (for example, A6 size) at the time of receiving JPEG encoded data in the sYCC color space can be registered as a specific size.
[0019]
Reference numeral 20 denotes an operation unit. One-touch dial, speed dial, numeric keypad, * key, # key, start key, stop key, set key, direct transmission selection key, file information transmission selection key, color information transmission selection key, other A function key is provided, and pressed key information is output to the bus 26. The operation unit 20 has a display unit, and inputs and outputs information output to the bus 26.
[0020]
Reference numeral 22 denotes a CPU (Central Processing Unit) which controls the entire facsimile apparatus and executes a facsimile transmission control procedure. The control program is stored in the ROM 24. Reference numeral 28 denotes a card interface on which a card 30 (for example, a CompactFlash (registered trademark) card storing information captured by a digital camera) is set.
[0021]
● Communication control signals The table below shows ITU-T Recommendation T.30 in this embodiment. 30 shows color-related bit information (FIF bit information) to be added to the 30 control procedure information (DIS / DTC signal, DCS signal).
[0022]

According to this table, the 68th bit of the FIF in the DIS / DTC signal indicates whether or not there is a function of receiving JPEG encoded data in the Lab color space, and the 68th bit of the FIF in the DCS signal indicates the presence or absence of the function in the Lab color space. Specify transmission by JPEG encoded data.
[0023]
Also, the presence / absence of a full color receiving function in the Lab color space is notified by the 69th bit of the FIF in the DIS / DTC signal, and full color transmission in the Lab color space is specified by the 69th bit of the FIF in the DCS signal.
[0024]
Also, the presence / absence of a function of receiving JPEG encoded data in the sYCC color space is notified by the X-th bit of the FIF in the DIS / DTC signal, and the JPEG encoding in the sYCC color space is notified by the X-th bit of the FIF in the DCS signal. Specify transmission by data.
[0025]
The ROM 24 in the facsimile apparatus shown in FIG. 1 stores a control program for controlling a characteristic receiving process in the present embodiment. Hereinafter, the reception processing by the control program will be described in detail with reference to the flowcharts of FIGS.
[0026]
Description of Reception Control First, the memory 18 is initialized via the bus 26 in step S2 in FIG. 2, and then the display on the operation unit 20 is cleared via the bus 26 in step S4. The CML of the NCU 2 is turned off, that is, the telephone line 2a is connected to the telephone 4 side.
[0027]
In step S8, based on the input information from the operation unit 20, it is determined whether or not the recording size registration at the time of printing when receiving JPEG encoded data in the sYCC color space is selected. The process proceeds to step S12 if not selected. In step S10, a specific size is stored in the memory 18 via the bus 26 as a print size when receiving JPEG encoded data in the sYCC color space. This specific size is obtained as input information from the operation unit 20, and for example, an A6 size or the like is registered.
[0028]
In step S12, it is determined whether or not facsimile reception has been selected. If it has been selected, the process proceeds to step S16. If not, the process proceeds to step S14 to execute other processing, and then returns to step S6.
[0029]
In step S16, the CML of the NCU 2 is turned on via the bus 26, that is, the telephone line 2a is connected to the facsimile machine. The communication pre-procedure is performed in step S18 of FIG. 3. At this time, by setting all 68, 69, and X bits of the FIF in the DIS signal to 1, the JPEG encoded full color data in the Lab color space and the sYCC The transmitting device is notified that JPEG encoded data in the color space can be received.
[0030]
Data reception in Lab color space Then, in step S20, whether or not both 68 and 69 bits of the FIF in the DCS signal notified from the transmitting apparatus by the pre-procedure are 1; that is, JPEG encoded full color in Lab color space It is determined whether or not data transmission is designated. If both are 1, the process proceeds to step S22. If at least one of them is not 1, the process proceeds to step S26.
[0031]
In step S22, JPEG encoded full-color data in the Lab color space is received, and this is printed at the size and resolution designated by the DCS signal. In step S24, a post-procedure is performed, and the process returns to step S6.
[0032]
On the other hand, in step S26, it is determined whether or not 68 bits of the FIF in the DCS signal is 1, and if this is 1, that is, it is determined that transmission of JPEG encoded gray scale data in the Lab color space is specified. The process proceeds to step S28. In step S28, the JPEG encoded grayscale data in the Lab color space is received, and it is printed at the size and resolution designated by the DCS signal. In step S30, a post procedure is performed, and the process returns to step S6.
[0033]
If data is received in the sYCC color space On the other hand, if the 68 bits of the FIF in the DCS signal is not 1 in step S26, the process proceeds to step S32 in FIG. It is determined whether transmission of JPEG encoded data in the space is designated. If it is 1, the process proceeds to step S38. If it is not 1, the process proceeds to step S34 because reception and analysis cannot be performed by the apparatus. After performing the reception as the value information and the printing process with the size and resolution designated by the DCS signal, the post-procedure is performed in step S36, and the process returns to step S6.
[0034]
In step S38, the JPEG encoded data in the sYCC color space is received, and is printed by the recording circuit 16 in a specific size registered in the memory 18. Here, for example, if the specific size is A6 size, the received data is scaled up so as to print on A4 size recording paper in the 4in1 format. At this time, a message indicating that recording of a specific size has been performed, a specific mark, or the like is added and printing is performed. Then, after executing the post-procedure in step S40, the process returns to step S6.
[0035]
As described above, according to the present embodiment, when JPEG full-color data in the sYCC color space is received, the resolution and print size are not specified from the transmitting device, and only the number of pixels is specified. However, it is possible to perform printing with a specific size set in advance by the user.
[0036]
In addition, by clearly indicating that the print is of a specific size, the user can easily recognize the print and the operability is improved.
[0037]
<Other embodiments>
Note that the present invention can take the form of, for example, a system, an apparatus, a method, a program, a storage medium, and the like. Specifically, a plurality of devices (for example, a host computer, an interface device, a reader, and a printer) Etc.), or may be applied to an apparatus (for example, a copying machine, a facsimile machine, etc.) including one device.
[0038]
Further, an object of the present invention is to provide a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or an apparatus, and a computer (or CPU or MPU) of the system or apparatus to store the storage medium. Needless to say, this can also be achieved by reading out and executing the program code stored in the.
[0039]
In this case, the program code itself read from the storage medium realizes the function of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.
[0040]
As a storage medium for supplying the program code, for example, a floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, nonvolatile memory card, ROM, or the like is used. I can do it.
[0041]
When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also an OS (Operating System) running on the computer based on the instruction of the program code. It goes without saying that a case where a part of the actual processing is performed and the function of the above-described embodiment is realized by the processing is also included.
[0042]
Further, after the program code read from the storage medium is written into a memory provided on a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that a CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.
[0043]
【The invention's effect】
As described above, according to the present invention, image recording can be performed on a received image file by a recording method corresponding to the color space.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a facsimile apparatus to which an embodiment according to the present invention is applied.
FIG. 2 is a flowchart illustrating a receiving process according to the embodiment.
FIG. 3 is a flowchart illustrating a receiving process according to the embodiment.
FIG. 4 is a flowchart illustrating a receiving process according to the embodiment.
[Explanation of symbols]
2 NCU
4 Telephone 6 Hybrid circuit 8 Modem 10 Calling circuit 12 Addition circuit 14 Reading circuit 16 Recording circuit 18 Memory circuit 20 Operation unit 22 CPU
24 ROM
26 bus 28 card interface 30 Compact Flash (registered trademark) card

Claims (2)

An image communication method for communicating color image information between a transmitting device and a receiving device, wherein in the receiving device,
A color space information receiving step of receiving color space information of an image file transmitted from the transmitting device;
A recording method determining step of determining a recording method of the received image file based on the color space information;
A recording step of recording the received image file by the determined recording method,
An image communication method comprising: An image communication device that receives color image information from a connected partner device,
Color space information receiving means for receiving color space information of the image file transmitted from the other device,
A recording method determining unit that determines a recording method of the received image file based on the color space information;
Recording means for recording the received image file by the determined recording method,
An image communication device comprising:

Images