JPS60197069A - Document display converting system - Google Patents

Abstract

PURPOSE:To improve the convenience of the user, to miniaturize an input device and to reduce the required memory amount by reading a longitudinally long original or a laterally long original without distinction to apply conversion at display. CONSTITUTION:In case of the longitudinally long original, the data on it is stored sequentially in a display memory 15 along the scanning order at the input of a document and read along the order of storage in case of display on a display device 16. In case of the laterally long original, when a picture element is written in the display memory 15, the direction of write is transposed and the change of write position to the display memory 15 is executed at the same time. A picture signal on the display memory 15 stored with transposition is read and displayed in the same method as the case with the longitudinally long original in such a way, allowing to display the laterally long original correctly on the display device 16.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for reading a document line-by-line and displaying it as a soft copy.

(2) Description of the conventional technology In conventional devices of this type, image signals read line-sequentially were displayed in the input order, so originals written in the vertical direction and originals written in the horizontal direction were mixed. In order to handle such documents, the input means must have a device capable of inputting large paper and a corresponding memory, and consideration must be given to adjusting the input direction according to the format of the manuscript when inputting a large manuscript. Met.

(3) Purpose of the Invention The present invention enables the reading of a manuscript written in portrait orientation or a manuscript written in landscape orientation in the same direction using an input means and instructing a change at the time of one display. The feature is that the information written in the vertical direction and the information written in the horizontal direction are displayed in the same way by changing the storage method and storing the information in the memory and sequentially reading the memory. The purpose is to improve the convenience of input devices, reduce the size of input devices, and reduce the amount of memory required.

(4) Explanation of the structure and operation of the invention FIG. 1 is a conceptual diagram of an embodiment of the present invention.

11 Hiro keyboard, 12 device control unit, 16 image reader, 14 magnetic disk, 15 display memory, 16
is a display, and 17 is a conversion circuit.

20 is a document display processing control block; 51. s7 is an input signal terminal and an output signal terminal.

To operate this, an instruction is given to input a document using the keyboard 11. Accordingly, the device control unit 12 instructs the image reader 13 to read the document. At this time, it is assumed that, for example, a document written in a portrait direction and a document written in a landscape direction are set in the image reader 16 so as to be aligned in the portrait direction. The image reader 16 scans and reads the set original according to the reading signal, and the obtained signal is stored on the magnetic disk 14. When the image reader 16 instructs to display the stored signal as it is, the device control The unit 12 reads out the corresponding signal from the magnetic disk 14 9
The information is stored in the display memory 15 while maintaining the time order. Next is the contents of this memory.

The information is read out in the order in which it was written and displayed on the display 16. In this case, if the original is written in portrait orientation, it will be displayed correctly, but if it is written in landscape orientation, it will be displayed transposed 90 degrees, so it is necessary to perform conversion instructions. There is.

In order to correctly display documents written in landscape orientation,
A conversion instruction is given from the keyboard 11.

According to the conversion instruction, a signal corresponding to the original to be displayed is successively output from the magnetic disk 14, and in the conversion circuit 17, the signal is converted so that the horizontally drawn original is correctly displayed, and is written into the 1-display memory 15. .

In the above, a method for correctly displaying a document written in the horizontal direction will be described in detail with reference to FIGS. 2 and 3. Here, FIG. 2 shows the concept of display conversion, and FIG. 6 shows an example of a control block configuration for document display conversion.

In this explanation, one page of two documents is 2400 pixels vertically.

Consisting of an image signal of 1728 horizontal pixels (corresponding to the A4-autumn equinox facsimile signal), the display memory 15 for this image signal
The basic unit of writing or continuous output is .

The pixel group is 8 pixels vertically and 8 pixels horizontally.

In FIG. 2, 21 is a basic unit of writing/reading into the display memory 15, that is, a pixel group of 8 pixels vertically and 8 pixels horizontally, and 22 is a pixel group that sequentially moves vertically (2400 pixels) while scanning horizontally (172B pixels). If the input document is a landscape original, 25 is a display document transposed by 90 degrees with respect to the document input direction. Adashi,
Numbers are assigned in the order in which they are displayed on the display 16.

When 22 and 23 are horizontally long originals, the correspondence (pixel group Na of input document 22 and pixel group Na of display document 23) is (1°3o
o), (2, (500),...C64569,2)1
It becomes (64585, 1). Reference numeral 24 indicates that the display memories 15 are arranged vertically in the order of display on the display 16 in pixel groups (8×8 pixels) 21 units. 25 represents one of the pixel group (8×8 pixels) 21 of the display memory 15.

When writing an input document into the display memory 15 and reading it out for display in the case of a vertically long original, the scanning direction and moving direction when inputting 9 documents are the same as the scanning direction and moving direction when displaying the sentence, so only one document is written. The data are sequentially stored in the display memory 15 in accordance with the scanning order at the time of input.

Even in the case of display display, reading may be performed in the order of storage. On the other hand, when writing an input document into the display memory 15 and reading it out for display in the case of a horizontally long original, vertical and horizontal replacement is required. less than.

The principle of replacement operation in the case of a horizontally long original will be explained.

When displaying a landscape document, reading starts from the pixel group corresponding to the lower left corner of the document input in portrait orientation.

It is necessary to sequentially read and display the data in the order shown in 23.

The readout order from the display memory 15 to the display 16 is fixed to the readout sequence shown at 24, regardless of whether the document is vertically long or horizontally long. Therefore, the order in which horizontally long originals are written into the 1-display memory 15 is the writing sequence shown in 24.
[You can write it in the introduction. However, as shown in 22, since the document is read by the image reader 16 as a portrait document,
Although the two pixel groups 21 are transposed in the memory by the write position conversion, the transposition within the pixel group 21 has not yet been performed, so that the vertical and horizontal transposition is not performed correctly.

For this reason, when writing the pixel group 21 into the 9-display memory 15, transposition is also performed between pixels within one pixel group 21.

In other words, as shown in 25, the writing order for portrait originals is set to 1.
,2. ..., 65.64, the writing order for a landscape original is + 1+ 91 171..., 57°2.
10. ..., write every 8 pixels like 56.64.

As explained above, when writing the pixels in one pixel group 21 to the display memory 15, transposing the writing direction and changing the writing position of the one pixel group 21 to the display memory 15 are simultaneously executed. Complete the conversion process. The image signal on the display memory 15 replaced and stored in this way is
A horizontally long original can be displayed correctly by reading and displaying it in the same manner as for a vertically long original.

FIG. 3 shows a detailed configuration example of the two-document display processing control block 20, in which 31 is an input signal terminal, 32 is a display memory,
33 is a write double buffer whose vertical width is the number of pixels (8 bits) equivalent to one line of a pixel group (8 x 8 pixels), and whose width is m (1728 bits) equivalent to one line of a vertically long original. Memory, 34, pixel group write address generation circuit, 65
36 is a pixel group read address generation circuit, and 36 has a vertical width (8 bits) corresponding to one row of a pixel group (8×8 pixels).

A readout double buffer memory with a horizontal width equivalent to one column of vertically long originals (2400 bits).

67 is an output signal terminal. A specific operation example of vertical and horizontal replacement will be described below with reference to FIG.

From the input signal terminal 31 to the image league input document 22
A serial signal (scanning order signal when inputting a document) is input,
08 written to one side (A side or B side) of the memory 33
When one line of pixels is written and one of the write double buffer memories 6 (A side TFC is B side) becomes full, the write buffer memory is switched to the other write double buffer memory, and the pixels are written to the buffer memory. The data is written into the display memory 32. When writing, consider the pixels in the buffer memory as 216 pixel groups of 8 (lines) x 8 (pixels), and write #J pixel group (8 x 8 pixels).
Performs transposition between pixels in , and write address control for a pixel group (8×8 pixels).

The write address of the pixel group for the display memory 32 is generated by the write address generation circuit 34. That is,
The write address generation circuit 64 is.

Let m be the horizontal pixel group position number of an image scanner input document, and n be the vertical pixel group position number.

When displaying a portrait original, as described above < m + 216 X (n
-1), when displaying a landscape original (300m -n +1
) to generate the address of the write pixel group. on the other hand.

Transposition within a pixel in the memory writing pixel group is performed by performing matrix conversion in units of 8 pixels in 9 columns for a horizontally oriented original and writing it into the display memory 32, and for a vertically oriented original, it is written as is in units of 8 pixels in a row to the display memory 62. Let's do it by doing this.

Next, the document written in the display memory 32 is read out.

The operation when displaying on the display 16 will be explained. Read address generation circuit 35 sequentially reads out pixel groups from pixel group number 1 to 64800 (that is, Ls1×−Lヱλ”−8−100×216). The read pixel groups are sequentially stored in the read double buffer memory 66, and each time the number of pixel groups in the horizontal direction of one displayed document (in the above example, 216 when displaying a portrait document and 600 when displaying a landscape document) is read out. , alternately switches the buffers for side A and side B. In this case, eight lines of data are read to one buffer.

The data read into the read double buffer memory 36.

The signals are sequentially read out as a serial signal to the output signal terminal 37 and displayed on the display gray 16.

The above explanation has given an example of displaying and converting signals stored on a magnetic disk, etc., but it is also easily possible to directly convert and display a read signal from an image league or the like using instructions from a keyboard or the like.

Furthermore, by storing the ID of the vertical/horizontal permutation instruction from the keyboard together with the input document, the vertical/horizontal permutation of the document display can be automatically performed without any operational instruction input from the keyboard.

(5) Explanation of effects As explained above, since the original is read and displayed regardless of whether it is vertically long or horizontally long, the input device can be made smaller and the memory required for display is also reduced.

This has the advantage that the amount of memory required is equivalent to that of a portrait-long original. Also.

This has the advantage that the user can load the original into the input device without being aware of the orientation of the original.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the device of the present invention. FIG. 2 is a conceptual diagram of the functions of this embodiment, and FIG. 6 is a detailed diagram of the document display processing control block. In the figure, 11 is a keyboard, and 12 is a device control unit. 13 is an image reader, and 14 is a magnetic disk. 15 is a display memory, 16 is a display, 17 is a conversion circuit, 21 is a display memory writing/reading basic unit, 22 is an image reader input document, 23 is a display displaying a horizontal document, 24 is a logical configuration diagram of the display memory 15, 25 is a One pixel group of the display memory 15 is shown. Patent applicant Nippon Telegraph and Telephone Public Corporation (one other person) Representative patent attorney Hiroshi Mori 1)

Claims (1)

[Claims] Input means for sequentially scanning a document such as paper and reading it as an electrical signal; means for accumulating the input signal obtained from the input means as an image signal; means for instructing whether to transpose or not; temporary storage means for temporarily storing image signals read out in specific units from the storage means; a control means for sequentially transposing each pixel group in units of one pixel group when the instruction means instructs transposition; a storage means for storing the divided pixel groups obtained by the control means; It has means for sequentially reading out and displaying pixel groups. A manuscript written in a vertical direction and a manuscript written in a horizontal direction are read by the input means in the same direction. A document characterized in that by transposing and storing a horizontally-written manuscript at the time of storing it in the storage means, the document can be read from the storage device and displayed on the display means without being aware of the distinction between vertically-written information and horizontally-written information. Display conversion method.