JPH0618409B2 - Image playback controller - Google Patents

Description

The present invention relates to a document reproducing apparatus for electronic files and the like.

[Prior Art] With the practical use of an optical disk device, an electronic file system having a large-capacity and high-speed registration / search function has appeared. Also, the speed of the document reading device has increased,
It has become possible to register a large number of manuscripts in a short time.

On the other hand, manuscripts are also diversified, and there are single-sided single-sided products, single-sided single-sided products, double-sided single-sided products, double-sided products, and the like.

Now, considering a double-sided original, in one set of originals as shown in FIG. 2, the last page may be blank. In this case, the storage capacity for the blank page (8th page) is used for one page. When several sets of such set items are registered at the same time, the capacity for registering the blank page increases, and these are wastefully used.

Then, during reproduction printing, the blank page is output. For example, when a plurality of double-sided sets as shown in FIG. 2 are set and double-sided printing is performed, pages having an image are pages 1 to 7 of each set, and page 8 of each set is an unnecessary page.

Therefore, a blank page is generated on the surface of the output recording paper, which is inefficient in terms of resources and time.

An object of the present invention is to read an image from a storage medium storing an image of a double-sided original having a blank page and perform double-sided recording,
It is an object of the present invention to provide an image reproduction control device capable of efficiently reproducing an image.

[Embodiment of the Invention] FIG. 2 is a diagram showing an example of a two-sided set original when the last page is blank.

FIG. 3 is a diagram showing a storage state on the optical disc,
FIG. 4 is a diagram showing reading of original data.

For example, in an electronic file using an optical disk device,
The manuscript is encoded and recorded on the optical disc. As shown in FIG. 3, recording is performed in a plurality of sectors in sector units from the outer peripheral direction of the optical disc, and the recording order is not necessarily continuous. The total number of pages, in which sector a certain page is recorded, the output order of the page, and the like are recorded in the sector unit from the inner circumferential direction as management information. The management information is recorded separately from the image signal, and at the time of reproduction, the image information is read based on this management information.

By the way, all the page order information recorded in the management information is rearranged and recorded in order from the first page to the last page. For example, when a double-sided original is recorded using an automatic reader, as shown in FIG. 4, only the odd-numbered pages on the front side are read and recorded at the first time, and the even-numbered pages on the back side are read and recorded at the second time. . Then, in the management information, the information of the recording sector of the page is recorded so that it can be output in the correct page order.

FIG. 1 is a block diagram showing an embodiment of the present invention.
The document reading device 401 is a continuous reading device similar to that used in a digital copying machine or the like. The optical disk drive device 402 is a generally known drive device. The printing machine 403 is similar to that used in a digital copying machine, and the control bus 405 is
Through this, each terminal and each function in the electronic file 404 are controlled. The data bus 406 is
Data is transferred between each terminal and each function in the electronic file 404 via this.

DMAC (Direct Memory Access Controller) 407
Thus, data is transferred between each terminal and each function via the data bus 406. The control circuit 408 of the electronic file device 404 is for performing communication and control between each terminal and each function.

The blank page detection circuit 409 detects whether or not the data transferred from the optical disc drive device 402 to the page memory 410 via the data bus 406 by the DMA 407 is related to a blank page. The page memory 410 temporarily stores one page of data from the document reader 401 at the time of registration, and then transfers the data to the disk drive device 402. Also, at the time of reproduction, the optical disc drive device 402 to 1
The data for one page is temporarily stored, and then the data is transferred to the print machine 403. The key input device 411 is used by the user to operate the electronic file device 404 and each terminal.

In addition to the above structure, a copying unit and a visible image blocking unit are provided. The copying means converts the filed image information into a visible image on a transfer sheet, and the visible image blocking means blocks the visualization of blank page information. .

Next, the operation of the above embodiment will be described.

FIG. 5 is a flow chart showing the operation of the above embodiment.

First, the user inputs to the control circuit 408 via the key input device 411 whether the print state is single-sided or double-sided.
Similarly, via the key input device 411, the control circuit 408
When a print instruction is issued to (SP1), the control circuit 408 determines whether single-sided printing or double-sided printing (SP2).
If it is single-sided printing, the DMAC 407 temporarily stores the data in page order from the optical disk drive device 402 to the page memory 410 via the data bus 406 (SP14).

Then, the blank page detection circuit 409 determines whether the data is for a blank page (SP15).
If there is no blank page, the DMAC 407 transfers the data to the printing machine 403 again and prints it out (SP16).

If the blank page detection circuit 409 detects a blank page,
The blank page data is not transferred to the printing machine 403, but the next page is transferred from the optical disk drive device 402 to the page memory 410 (SP17), and the printing machine 403 prints out and printing of all pages is completed. The above operation is repeated until it is performed (SP18).

On the other hand, in the case of double-sided printing, in order to detect a blank page, data is sequentially transferred to the page memory 410 by the DMAC 407 from the back page (that is, the even page of the first set) (SP3). If the blank page detection circuit 409 does not detect a blank page (SP4), the printing machine 40 performs the same operation as in the above-described single-sided printing.
3 is printed out (SP5), and the above operation is repeated until the designated number of prints are completed (SP).
6).

If the data transferred from the optical disk drive device 402 is judged by the blank page detection circuit 409 to be a blank page (SP7), this information is sent to the control circuit 4
08, the control circuit 408 changes the page order of the next set. That is, the transfer is instructed in order of odd pages (SP8). Then, by the same operation as before, the printout is performed (SP9), and the entire back surface is printed (SP10). Then, the user sets the paper again on the printing machine 403 to the information that can be printed on the front side, and when a print instruction is given, the front side pages are sequentially transferred to the page memory 410 (SP11), and further from the page memory 410 to the printing machine. Transferred to 403,
Print out (SP12). Thus, the operation is performed until the printing of all pages is completed (SP1
3).

FIG. 6 shows the above results, where a) is the state inside the optical disk drive, b) is the state of single-sided printing, and c) is the state of double-sided printing.

The operation of the above-described embodiment is performed for the case of printing out a document as shown in FIG. 6a).

FIG. 7 is a circuit diagram showing the blank sheet detection circuit more specifically.

The data line 1 is "L" for "white" and "H" for "black". The AND circuit 2 is a circuit for detecting the above "black", the counters 3 and 4 are for counting the number of "black", reference numeral 5 is a clock input, reference numeral 6 is a clear input, reference numeral 7 Indicates the output.

Next, the operation of the blank sheet detection circuit will be described.

First, before transferring one page of data, the control circuit 4
08 clears counters 3 and 4 by clear input 6. Thereafter, the DMAC 407 transfers the data, the AND circuit 2 detects "black", and the counters 3 and 4 count the number. And
When the count exceeds “256”, the signal line 7
Information is transmitted to the control circuit 408, and by this information,
Recognize that it is not a blank page.

That is, after starting the data transfer for one page,
When the count of “black” is “256” or less, the above information is not transmitted to the signal line 7, so it is determined that the page is a blank page.

Note that the numbers of the counters 3 and 4 can be set arbitrarily and are appropriately determined including a margin for image noise and the like.

EFFECT OF THE INVENTION According to the present invention, when double-sided recording is performed on each of the first file and the second file in which the images of the double-sided original are stored,
When the last page of the first file is a blank page, the first page of the second file can be recorded instead of the blank page, so that it is possible to prevent a blank page from existing in the middle of the recorded page, and efficiently. There is an effect that an image can be reproduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing an example of a double-sided set original when the last page is blank. FIG. 3 is a diagram showing a recording state of data on the optical disc. FIG. 4 is a diagram showing a method of storing a double-sided original. FIG. 5 is a flow chart showing the operation of the above embodiment. FIG. 6 is an explanatory view of the above embodiment, in which a) shows a state inside the optical disk drive device, b) shows a state of single-sided printing, and c) shows a state of double-sided printing. Is. FIG. 7 is a block diagram showing an example of a blank sheet detection circuit. 401 ... manuscript reading device, 402 ... optical disk drive device, 403 ... printing machine, 408 ... control circuit, 409 ... blank sheet detection circuit.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tsutomu Watanabe 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Yoshihiko Hirose 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (72) Inventor Takaaki Ashinuma 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (56) References: 58-104052 (JP, U)

Claims (1)

[Claims] 1. Read-out means for reading out an image from a storage medium storing a plurality of files each consisting of a plurality of double-sided original images; output to the recording means for recording the image read out by the read-out means on a recording material. Output means for detecting whether or not the image stored in the storage medium is a blank page; and a double-sided recording mode for recording the image stored in the storage medium on both sides of a recording material. Mode setting means; when the double-sided recording mode is set by the mode setting means, the even-page image of the first file read from the recording medium is detected as a blank page by the blank-sheet detecting means. And the image of the last page excluding the blank page of the first file and the image of the first page of the second file are different from each other on the same recording material. An image reproduction control device comprising: control means for controlling the reading means and the output means so as to be recorded on each surface.