Abstract:
A method and apparatus for controlling a plurality of magnetic discs for processing a composite picture image. The composite picture image is made up of a first picture image and a second picture image which is inserted into the first picture image. The first picture image is digitized and is stored in first predetermined positions on one track on one side or recording surface of a magnetic disc. The second picture image is digitized and stored in second predetermined positions between the first predetermined positions on the same track on another side or recording surface of the disc. Both sides or recording surfaces of the disc are read out, and a logic product is formed between the two stored signals therefrom. In another embodiment, the first picture image is OR&#39;d processed with an image mask prior to combination with the second image signal. An apparatus to achieve the foregoing method includes a multiplexer code register for receiving an access code and controlling the actuation of the magnetic read-write heads accordingly.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a method and apparatus for controlling magnetic discs which process a picture image. 
     As shown in FIG. 1, a first original document A has frames A 1  -A 6  therein and a second original document B has information contents B 1  and B 2 . In the case where the content B 1  is to be moved into each of the frames A 1 , A 3  and A 5  and the content B 2  is to be moved into each of the frames A 2 , A 4  and A 6 , to obtain a merged document C (that is, when posting or moving is effected by a computer), the operation has been completed in a first manner in the prior art as described hereunder. It is assumed that a magnetic disc (hereinafter abbreviated as DK) is used as a storage means: 
     (1) the original document A is read by a picture image reading device and the read-out information is stored in an area A of a DK. The information stored in area A is referred to as &#34;File A&#34;; 
     (2) the original document B is read by the picture image reading device and the read-out information is stored in an area B of the DK. The information stored in area B is referred to as &#34;File B&#34;; 
     (3) picture information to be moved from File A is written into a main memory (hereinafter abbreviated as MM) from the DK. The picture information thus written into the MM is referred to as &#34;Data A&#34;; 
     (4) picture information to be moved from File B is written into the MM from the DK. The picture information thus written into the MM is referred to as &#34;Data B&#34;; 
     (5) data A and data B are ORed. The result of the ORing operation is referred to as &#34;Data C&#34;; 
     (6) the Data C is read-out of the MM and stored in the DK. The stored data is referred to as &#34;File C&#34;; and 
     (7) the File C is read-out to a picture image output device so that the original document C having a picture image if formed as shown in FIG. 1. 
     In the case where, for example, each of the original documents A, B and C of FIG. 1 is of &#34;A4&#34; size, and the picture image is read-out/written in with a resolution of about 10 lines/mm, the bulk of information will be as large as several megabites. This information corresponds to approximately 120 tracks of a DK. 
     When the above-mentioned steps (3) and (6) are executed, a track of disc DK in which File A has been stored (as well as the specific portion thereof which is to be moved) is first accessed to read picture information a 1  out of the File A into the MM. The track in which File B has been stored (as well as the specific portion thereof which is to be moved) is accessed to read picture information b 1  out of the File B into the MM. The information a 1  and b 1  are then ORed in the MM. The result of the OR operation is then read out of the MM and stored in the DK. Subsequently, another track in which File A is stored (along with the portion thereof to be transferred) is accessed to read out picture information a 2  of the File A into the MM, and another track in which File B is stored (along with the portion thereof to be transferred) is accessed to read out picture information b 2  of the File B into the MM. The information a 2  and b 2  are ORed in the MM and the result of OR operation is stored in the DK from the MM. Thus, in this first prior art processing method, the above-mentioned operations are repeatedly and cyclically effected approximately 120 times (in the above-mentioned example) before the transfer of an A4 size sheet of picture image of an original document can be completed. 
     As is apparent in the above-described conventional picture image transferring method, since the highest percentage of processing time is expended in accessing the DK, the processing time is unnecessarily long. 
     In the case where the picture image transferring processing is effected by using a masking step such as shown in FIG. 2, a mask B is placed over an original document A so as to delete picture image information in a portion of an original document A. A portion of picture image information on an original document C is moved to the portion of document A from which picture image information has been deleted to obtain an original document D. This second prior art processing method is effected by the following conventional steps: 
     (1&#39;) the original document is read and the read-out information is stored at an area A of the DK. The stored information is referred to as &#34;File A&#34;; 
     (2&#39;) the original document is read and the read-out information is stored at area B of the DK. The stored information is referred to as &#34;File B&#34;; 
     (3&#39;) the mask B is read and the read-out information is stored at area C of the DK. The stored information is referred to as &#34;File C&#34;; 
     (4&#39;) the information from File A is read from the DK into the MM; 
     (5&#39;) the picture information in a portion of the File C to be moved is read from the DK into the MM; 
     (6&#39;) the information of the File B is read from the DK into the MM; 
     (7&#39;) the respective images from File C, File B and File A are combined in the MM; and 
     (8&#39;) the information obtained by transferring a part of the original document C to a portion of the original document A is stored again in the DK. 
     The above-mentioned steps are repeated until the transfer of all the information to be moved has been completed. Thus, similarly to the previous processing method, the transfer process of moving a portion of the image on the original document C to a masked portion of the original document A unduly increases the processing time. 
     In both of the prior art image processing methods described above, the transfer processing time is unduly lengthy which decreases both the efficiency and utility of the image processing devices which effect these processing methods. 
     SUMMARY OF THE INVENTION 
     An object of the present invention is to provide an image processing method and apparatus in which the image processing time is minimized. 
     This and other objects of the invention are realized by an image processing method and apparatus in which the information bits are read in and are shifted and stored in different sides or recording surfaces of a storage disc so that they can be subsequently read out simultaneously. This greatly reduces the image processing time of the apparatus. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a diagram illustrating a first general example of posting processing; 
     FIG. 2 is a diagram illustrating a second general example of posting processing; 
     FIG. 3 is a block diagram of the first embodiment of the present invention; 
     FIG. 4 is a circuit diagram of both the writing head and reading head selectors shown in FIG. 3; 
     FIG. 5 is a time chart of picture image read-out signals for the first example as in FIG. 1 according to the first embodiment of the invention; 
     FIG. 6 is a block diagram of a second embodiment of the present invention; 
     FIG. 7A and FIG. 7B are expanded circuit diagrams of the selectors of FIG. 6; and 
     FIG. 8 is a time chart of picture image read-out signals for the second example as in FIG. 2 according to the second embodiment of the invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     In FIG. 3, reference numerals 1, 2 and 3 represent respectively a writing-head selector constituted by, for example, a multiplexer (hereinafter abbreviated as MPX), a reading-head selector constituted by an MPX, and an amplifier-decoder. The reference numerals 4a 1  -4a zn  represent zn magnetic heads and numerals 5a 1  -5a n  represent n disc boards (hereinafter referred to as DK boards). Each of the n disc boards are provided with information on its opposite surfaces by two of the magnetic heads 4a 1  -4a 2n . The reference numerals 6, 7 and 8 represent DK-write-in information, DK-read-out information and MPX code, respectively. The reference numerals 1a 1  to 1a 2n  represent lines for transmitting DK-write-in information produced from the writinghead selector 1, numerals 2a 1  -2a 2n  represent lines for transmitting DK-read-out information to be applied to the reading-head selector 2, and numerals 3a 1  -3a 2n  represent lines for either transmitting write-in information to be transferred to the magnetic heads 4a 1  to 4a 2n  or receiving read-out information from the DK boards 5a 1  -5a n  via the magnetic heads 4a 1  -4a zn . 
     FIG. 4 shows an embodiment of the writing-head selector 1 and the reading-head selector 2 as shown in FIG. 3. In FIG. 4, the reference numeral 9 designates an MPX code register. 
     The operation of the above-mentioned embodiment of the present invention will now be described in which the contents of an original document B is moved to a portion of an original document A to obtain an original document C as shown in FIG. 1. FIG. 5 is a time chart of the picture image read-out of an original document (or, the picture image to be stored in a DK). 
     First, the original document A of FIG. 1 is scanned along the respective lines a, b and c in the transverse direction. The read-out signals are then subject to binary transformation to obtain binary signals a&#39;, b&#39;, and c&#39; as shown in FIG. 5. At this time, the MPX code 8 of FIG. 4 is set to actuate the magnetic head 4a 1  such that only an AND gate 10a 1  of the writing-head selector 1 is opened, (the remainder AND gates 10a 2  -10a 2n  being in the closed condition). Thereafter, the binary information a&#39;, b&#39;, and c&#39; is transferred to the first magnetic head 4a 1  through the AND gate 10a 1 , lines 1a 1  and 3a 1 , so that the first magnetic head 4a 1  stores the binary information a&#39;, b&#39; and c&#39; at an address of a predetermined track on a surface of the DK board 5a 1 . The frame information for the binary information a&#39;, b&#39; and c&#39; is stored at positions P 1  -P 2 , P 3  -P 4 , P 6  -P 7  and P 10  -P 11  on the above-mentioned track. 
     To facilitate the further explanation of the operation of the invention, it is assumed that the amount of information read out by one scanning corresponds to the contents stored in one DK track. Although in actuality the amount of information read out by several tens of scanning operations corresponds to the contents stored in one DK track, it is possible to make this assumption via simple calculation. The signals a&#39;, b&#39; and c&#39; are allotted to the track addresses corresponding to the order of scanning; for example, the signals a&#39;, b&#39; and c&#39; may be allotted to the track addresses 30, 60 and 90, respectively. 
     Next, the original document B is scanned to be read along the lines d and e in the transverse direction to obtain binary signals d&#39; and e&#39;. When scanning is made along the line d in the transverse direction, the MPX code 8 of FIG. 4 is set to actuate only the second magnetic head 4a 2  ; that is, the AND gate 10a 2  of the writing-head selector 1 is opened and the rest of the AND gates remain closed. Therefore, the binary information d&#39; is transferred to the magnetic head 4a 2  through the AND gate 10a 2 , lines 1a 2  and 3a 2 . At this time, the position to which the information d&#39; is to be moved is written by the second magnetic head 4a 2  as d&#34;. This position is selected to be a position which is displaced by a distance 1 in the main scanning direction. In this manner, information d&#34; is inserted into the frames A 1 , A 3  and A 5  as shown in FIG. 5. That is, the information d&#39; which is to be stored in the position P 8  -P 9  (if an address conversion is not made) is removed to the position P 2  -P 3  as shown by the information d&#34;. 
     With respect to the original document B, when the scanning is being made along the transverse line e, the MPX code of FIG. 4 is set to actuate the third magnetic head 4a 3  (not shown). That is, only the third AND gate 10a 3  of the writing-head selector 1 is opened, while the rest of the AND gates remain closed. Thus, the binary signal e&#39; is transferred to the third magnetic head 4a 3  (not shown) through the AND gate 10a 3 , lines 1a 3  and 3a 3  (not shown). The signal e&#34; is then stored at a predetermined track address on the upper surface of the DK board 5a 2  (not shown). Specifically, the position to which the information e&#39; is to be moved is written by the magnetic head 4a 3  and the signal e&#39; is displaced from the position P 5  -P 9  to the position P 7  -P 10  so that the information e&#34; is stored in the DK board 5a 2  (as will be apparent upon a comparison between the positions of the signals e&#39; and e&#34;). 
     The signals d&#34; and e&#34; may be allotted, for example, to the track addresses 20 and 40 respectively. 
     Next, the MPX code 8 of FIG. 4 is set to simultaneously select the magnetic heads 4a 1 , 4a 2  and 4a 3 . That is, the AND gates 11a 1 , 11a 2  and 11a 3  of the reading-head selector 2 are simultaneously opened while the rest of the AND gates remain closed. The DK boards 5a 1  and 5a 2  are read by the magnetic heads 4a 1 , 4a 2  and 4a 3 . In this manner, the respective information signals a&#39;, d&#34; and e&#34; are simultaneously read out by the first, second and third magnetic heads 4a 1 , 4a 2  and 4a 3 , respectively such that the information B 1  and B 2  of the original document B is respectively moved into the frames A 1  and A 2  of the original document A to obtain the f&#39; (see FIG. 5). 
     In the same manner, the respective information signals b&#39;, d&#34; and e&#34; are simultaneoulsy read out by the first, second and third magnetic heads 4a 1  4a 2  and 4a 3  respectively to obtain information g&#39;. Further, the respective information signals c&#39;, d&#34; and e&#34; are simultaneously read out by the first, second and third magnetic heads 4a 1 , 4a 2  and 4a 3 , respectively to obtain the information h&#39;. If the information signals f&#39;, g&#39; and h&#39; are subsequently outputted onto a picture image producing device, the document C as shown in FIG. 1 is obtained. 
     As is apparent from the foregoing description, according to the present invention, the steps (3)-(6) can be omitted from the steps (1)-(7) of the first prior art processing method as previously described. In this manner, highspeed picture image posting or moving can be attained. Further, if it is desired to successively change the original documents to be posted or moved on a one by one basis (for example, in the case where the scanned contents i and j of the original document B are to be posted or moved onto the original document A shown in FIG. 1), it will suffice to post or move the scanned information i and j to the regions of the magnetic head 4a 2  and 4a 3 . Thus, according to the present invention, the processing time has been reduced even when the processing has to be started from the step in which the first original document A is loaded in accordance with conventional techniques. 
     A second embodiment of the present invention will be described with reference to FIG. 8 in which a mask B is placed on an original document A and information of an original document C is posted or moved to that portion of the document A covered by the mask B to obtain a picture image such as a document C. 
     FIG. 6 shows the configuration of the second embodiment. In FIG. 6, reference numerals 21, 22, 23, 24, 25 and 26 represent a writing-head selector, a masking-head selector, a reading-head selector, a first MPX code, a second MPX code and a third MPX code, respectively. Each of the selectors 21-23 is preferably constituted by a MPX device. 
     FIGS. 7A and 7B show an embodiment of the configuration of FIG. 6. Reference numerals 27, 28 and 29 represent a first MPX register, a second MPX register and a third MPX register, respectively. 
     The operation of the second embodiment will be described by referring to FIG. 2 and FIG. 8. FIG. 8 is a time chart of signals read by the picture image reading device of FIG. 2. 
     The original document A is scanned along the line a to read the original document A. The read-out information is subject to binary transformation to obtain binary signal a&#39; of FIG. 8. At this time, the first MPX code 24 is set to select only the first magnetic head 4a 1 . Therefore, the signal a&#39; is transferred to a DK write-in signal 6 to the writing-head selector 21. The signal a&#39; is then outputted from the writing-head selector 21 through the line 1a 1 . and is applied to a first magnetic head 4a 1  through the line 3a 1 . The first magnetic head 4a 1  stores the signal a&#39; in a predetermined region P 1  -P 6  (FIG. 8) on a predetermined track on an upper surface of a DK board 5a 1 . 
     The mask B is read along the line b and the mask information (in which the portion corresponding to the position of the original document A to be recorded is made to be a logical &#34;1&#34;) is written by a second magnetic head 4a 2  on the lower surface of the DK board 5a 1 , as shown in b&#39; of FIG. 8. At this time, a logical &#34;1&#34; signal is stored as the mask information b&#39; at the portion P 2  -P 2  on a predetermined track. 
     The original document C which contains the information to be posted or moved is read along the line c as shown in FIG. 2. The read-out information c&#39; (FIG. 8) is moved to the position P 4  -P 5  to be recorded by a magnetic head 4a 3  onto an upper surface of a DK board 5a 2 . Thus, the information c&#34; has been stored in the position P 4  -P 5  on the predetermined track. 
     Next, the second MPX code 25 is set to simultaneously access the first and second magnetic heads 4a 1  and 4a 2  and the third MPX code 26 set to access the third magnetic head 4a 3 . When the second MPX code 25 is set to simultaneously access the magnetic heads 4a 1  and 4a 2 , each of the signals on the lines 28a 1  and 28a 2  connected to MPX code register 28 are at a &#34;1&#34; state, while each of the signals on the remainder lines 28a c  -28a 2n  are at a &#34;0&#34; state. When the outputs of both the first and second magnetic heads 4a 1  and 4a 2  are &#34;1&#34; (namely, when the signals on both the lines 2a 1  and 2a 2  are &#34;1&#34;) a logical &#34;1&#34; output is obtained from an AND gate 30. The output of the AND gate 30 is the information of the original document A which is covered by the mask B. 
     When the third MPX code 26 is set for accessing only the third magnetic head 4a 3 , the signal on the line 29a 3  connected to the third MPX code register is a logical &#34;1&#34; while the signals on the other lines remain a logical &#34;0&#34;. Thus, only the signal read out by the third magnetic head 4a 3  is outputted from an OR gate 31. 
     When the magnetic heads 4a 1 , 4a 2  and 4a 3  are simultaneously accessed in the manner as mentioned above, a DK read-out signal 7 having a waveform d&#39; of FIG. 8 is outputted from the masking-head selector 22. 
     If the DK read-out signal 7 is supplied to the picture image output device, the document D of FIG. 2 is obtained, wherein the original document C is posted or moved to the position of the original document A which is covered by the mask B. 
     In this embodiment, the steps (4&#39;)-(8&#39;) of the second prior art image processing method can be obtained similarly to that of the first embodiment of the invention. As such, the picture image processing time can be reduced accordingly. This embodiment is preferably used in the case of a so-called compounding description, in which a large character is expressed in terms of a plurality of small characters.