Abstract:
An input control apparatus mounted on a semiconductor device manufacturing equipment, or the semiconductor device manufacturing equipment, which subjects a plurality of processes to a substrate to manufacture semiconductor devices. A display unit includes a touch panel configured to input data regarding the processes. An input detection section detects a start of inputting of the data from the touch panel and an elapse of a predetermined period of time from the start of inputting of the data. A neglecting section neglects at least one input following a first input, the at least one input and the first input being input within the predetermined period of time, to receive only the first input.

Description:
This application is a continuation of application Ser. No. 08/899,168,filed Jul. 23, 1997, now U.S. Pat. No. 6,078,313. 
    
    
     BACKGROUND OF THE INVENTION 
     The present invention relates to an input control apparatus, a display control apparatus, and a display apparatus used for the control unit of an equipment for manufacturing semiconductor devices. 
     For example, in the photolithography process of the semiconductor device manufacturing processes, a resist coating process for forming a resist film on the surface of a semiconductor wafer (to be referred to as a wafer hereinafter) and a developing process for developing the wafer after the wafer coated with the resist film is exposed. The resist coating process and the developing process are conventionally performed by a predetermined sequence in a composite process system equipped with the corresponding process machines. 
     Sequence control in this system is generally performed by a control unit using a personal computer or the like. The control unit is connected to a man-machine interface such as a touch panel type display. System configuration editing, monitor method setting, and the like in the above respective processes are performed through this display. 
     In system configuration editing, for example, a series of processes and the processing contents of each process are displayed in the form of, e.g., a table. All the sequence processes are not often displayed due to a limited display area of the display. In particular, this tendency is more pronounced in a system having the composite process described above because the system has a large number of processes. For this reason, some of the series of processes are displayed, and at the same time, the remaining processes can be displayed by a so-called scroll function or the like. 
     A conventional display has a table to be scrolled and scroll buttons. The scroll buttons include line scroll buttons and page scroll buttons. Upon clicking on one line scroll button, the lines on the immediately preceding page are scrolled and displayed. Upon clicking on the other line scroll button, the lines on the immediately succeeding page are scrolled and displayed. Upon clicking on one page scroll button, the preceding pages are sequentially scrolled and displayed. Upon clicking on the other page scroll button, the succeeding pages are sequentially scrolled and displayed. 
     To prevent continuous scrolling upon clicking on a wrong button a plurality of number of times consecutively, e.g., to prevent 2-line or 2-page scrolling upon clicking on a wrong button two times consecutively a predetermined interval for regulating click-on is defined between the first click-on of a given button and the second click-on of the given button. For example, if this interval is about 0.3 sec, the second click-on of the given button within 0.3 sec after the first click-on of the given button is not counted or is regarded as an invalid input. 
     This regulation prohibits continuous scrolling of a plurality of lines or pages. That is, in continuously scrolling the display contents by a plurality of lines or pages, the above button is consecutively clicked on a plurality of number of times. The click-on within the above interval cannot be counted, and scrolling cannot advance at a desired speed. 
     BRIEF SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide an input control apparatus, a display control apparatus, and a display apparatus which allow smooth, continuous inputs while preventing an operation error caused by consecutive click-ons. 
     It is another object of the present invention to provide an input control apparatus, a display control apparatus, and a display apparatus which allow smooth, continuous inputs while preventing an operation error caused by consecutive click-ons even if an input control unit and a display control unit are separately present. 
     It is still another object of the present invention to provide an input control apparatus, a display control apparatus, and a display apparatus which allow smooth, continuous inputs properly using a commonly recognizable flag area while preventing an operation error caused by consecutive click-ons even if an input control unit and a display control unit are separately present and the input control unit and the display control unit have the flag area. 
     It is still another object of the present invention to provide an input control apparatus, a display control apparatus, and a display apparatus which allow smooth, continuous inputs while preventing an operation error caused by consecutive click-ons in a touch panel type display for performing scrolling in accordance with the number of times inputs are made using an input button while displaying the input button. 
     More specifically, the present invention provides an input control apparatus, a display control apparatus, and a display apparatus which allow smooth, continuous scrolling of a plurality of lines or pages. 
     Furthermore, the present invention provides an input control apparatus, a display control apparatus, and a display apparatus which allows continuous scrolling of a plurality of lines or pages at a higher speed, and appropriately displaying a desired portion. 
     According to the present invention, an input control apparatus comprises an input detector for detecting a start and end of an input period, a period detector for detecting an elapse of a first period from the start of the input period and repeatedly detecting an elapse of a second period upon the elapse of the first period, and a determining machine for determining that an input is complete with only one input operation when the end of the input period is detected before the first elapse of the second period, and determining that an input operation is made every elapse of the second period when the input period continues. 
     A display control apparatus comprises an input control unit for performing input control and a display control unit for performing display control, wherein the input control unit comprises an input detector for detecting a start and end of an input period, a notification machine for notifying the display control unit of a detection result of the input detector, a period detector for detecting an elapse of a first period from the start of the input period and repeatedly detecting an elapse of a second period shorter than the first period upon the elapse of the first period, and a determining machine for determining that an input is complete with only one input operation when the end of the input period is detected before the first elapse of the second period, and determining that an input operation is made every elapse of the second period when the input period continues, and the display control unit comprises a reception machine for receiving notification of the detection result from the input control unit and a controller for controlling display in accordance with the received notification of the detection result. 
     A display apparatus comprises a touch panel type display, an input control unit for performing input control of the display, a display control unit for performing display control of the display, and a flag area which can be commonly recognized by the input control unit and the display control unit, wherein the input control unit comprises an input detector for detecting a start and end of an input period, a reflecting machine for reflecting a detection result of the input detector on the flag area, a notification machine for notifying the display control unit of the detection result, a period detection machine for detecting an elapse of a first period from the start of the input period on the basis of a recognition result of the flag area and repeatedly detecting an elapse of a second period shorter than the first period upon the elapse of the first period on the basis of the recognition result of the flag area, and a determining machine for determining that an input is complete with only one input operation when the end of the input period is detected before the first elapse of the second period, and determining that an input operation is made every elapse of the second period when the input period continues, and the display control unit comprises a reception machine for receiving notification of the detection result from the input control unit, a controller for controlling display in accordance with the received notification of the detection result, and a reflecting machine for reflecting the received detection result on the flag area. 
     A display apparatus comprises a touch panel type display, an input control unit for performing input control of the display, a display control unit for performing display control of the display, and a flag area which can be commonly recognized by the input control unit and the display control unit, wherein the input control unit comprises input detection means for detecting a start and end of an input period, a reflecting machine for reflecting a detection result of the input detector on the flag area when the end of the input period is detected, a notification machine for notifying the display control unit of the detection result, a period detector for detecting an elapse of a first period from the start of the input period on the basis of a recognition result of the flag area and repeatedly detecting an elapse of a second period shorter than the first period upon the elapse of the first period on the basis of the recognition result of the flag area, and a determining machine for determining that an input is complete with only one input operation when the end of the input period is detected before the first elapse of the second period, and determining that an input operation is made every elapse of the second period when the input period continues, and the display control unit comprises a reception machine for receiving notification of the detection result from the input control unit, a controller for controlling display in accordance with the received notification of the detection result, and a reflecting machine for reflecting the received detection result on the flag area when the received detection result represents the start of the input period. 
     Additional object and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The object and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the appended claims. 
    
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING 
     The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate presently preferred embodiments of the invention, and together with the general description given above and the detailed description of the preferred embodiments given below, serve to explain the principles of the invention. 
     FIG. 1 is a plan view showing the overall arrangement of a semiconductor wafer coating/developing process system to which an embodiment of the present invention is applied; 
     FIG. 2 is a front view of the coating/developing process system shown in FIG. 1; 
     FIG. 3 is a rear view of the coating/developing process system shown in FIG. 1; 
     FIG. 4 is a block diagram showing the control unit of the coating/developing process system shown in FIG. 1; 
     FIG. 5 is a view showing the system configuration/ editing window of a display in the coating/developing process system shown in FIG. 1; 
     FIG. 6 is a view showing the hardware monitor window of the display in the coating/developing process system shown in FIG. 1; 
     FIG. 7 is a view showing the recipe editing window of the display in the coating/developing process system shown in FIG. 1; 
     FIG. 8 is a view conceptually showing display data displayed in the content display column of the display in the coating/developing process system shown in FIG. 1; 
     FIG. 9 is a view for explaining part of the contents of a storage in the control unit of the coating/developing system shown in FIG. 1; 
     FIG. 10 is a block diagram of a display section; 
     FIG. 11 is a flow chart showing the operations of an input control program and a display control program in the control unit of the coating/developing system shown in FIG. 1; and 
     FIG. 12 is a view for explaining an auto-repeat operation in the display of the coating/developing system shown in FIG.  1 . 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     FIGS. 1 to  3  show the overall arrangement of a coating/developing process system  1  for a semiconductor wafer (to be referred to as a wafer hereinafter). The coating/developing process system  1  integrally comprises a cassette station  10 , a process station  11 , and an interface section  12 . The cassette station  10  loads/unloads in/from the system a plurality of wafers w, e.g., 25 wafers serving as target substrates in a wafer cassette CR, or loads/unloads each wafer w in/from the wafer cassette CR. In the process station  11 , various wafer process machines each for performing a predetermined process for each wafer w in the coating/developing process are arranged at predetermined positions in a multi-level manner. The interface section  12  exchanges the wafer w with an exposure device (not shown) arranged adjacent to the process station  11 . 
     As shown in FIG. 1, in the cassette station  10 , a plurality of wafer cassettes CR, e.g., a maximum of four wafer cassettes are placed linearly in the X direction (vertical direction in FIG. 1) at the positions of positioning projections  20   a  on a cassette table  20  such that the wafer inlets/outlets of the cassettes CR face the process station  11 . A wafer conveyor  21  movable in the cassette array direction (X direction) and the wafer array direction (Z direction; vertical direction) of wafers stored in the wafer cassettes CR is arranged to selectively access the wafer cassettes CR. 
     The wafer conveyor  21  is arranged to be rotatable in the θ direction and can also access an alignment machine (ALIM) and an extension unit (EXT) which belong to the multi-stage unit section of a third process machine group G 3  on the process station  11  side (to be described later). 
     As shown in FIG. 1, a vertical transport type main wafer transport mechanism  22  having a wafer transport device is arranged in the process station  11 , and one or a plurality of multi-stage process machines are arranged around the main wafer transport mechanism  22 . 
     As shown in FIG. 3, the main wafer transport mechanism  22  has a wafer transport device  46  vertically (Z direction) movable in a cylindrical support  49 . The cylindrical support  49  is connected to the rotating shaft of a motor (not shown) and rotates together with the wafer transport device  46  about the rotating shaft upon being driven by the motor. The wafer transport device  46  is rotatable in the θ direction accordingly. Note that the cylindrical support  49  may be connected to another rotating shaft (not shown) rotated by the motor. 
     The wafer transport device  46  comprises a plurality of holding members  48  movable back and forth with respect to a transport base  47 . The wafer w is exchanged between the adjacent process machines by these holding members  48 . 
     In this embodiment, five process machine groups, i.e., the group G 3  and groups G 1 , G 2 , G 4 , and G 5  can be arranged. The multi-stage units of the first and second process machine groups G 1  and G 2  are arranged on the front surface (lower side of the drawing sheet in FIG. 1) side, the multi-stage units of the third process machine group G 3  are arranged adjacent to the cassette station  10 , the multi-stage units of the fourth process machine group G 4  are arranged adjacent to the interface section  12 , and the multi-stage units of the fifth process machine group G 5  are arranged on the rear surface side. 
     As shown in FIG. 2, in the first process machine group G 1 , two spinner type process machines each for placing a wafer w on a spin chuck in a cup CP, e.g., a resist coating machine (COT) and a developer machine (DEV) are stacked upward in this order. In the second process machine group G 2  as well, two spinner type process machines each for placing a wafer w on a spin chuck in a cup CP, e.g., a resist coating machine (COT) and a developer machine (DEV) are stacked upward in this order. These resist coating machines (COTs) are preferably arranged under the corresponding developer machines because the waste resist solution is hard to handle in view of mechanism and maintenance. However, each resist coating machine can be arranged on the corresponding developer machine, as needed. 
     As shown in FIG. 3, in the third process machine group G 3 , for example, eight open type process machines each for placing a wafer w on a susceptor SP to perform a predetermined process, e.g., a cooling machine (COL) for performing a cooling process, an adhesion machine (AD) for performing an adhesion process to increase the fixing strength of a resist, an alignment machine (ALIM) for performing positioning, an extension machine (EXT), two pre-baking machines (PREBAKES) each for performing a baking treatment before an exposure process, and two post-baking machines (POBAKEs) each for performing a baking treatment after the exposure process, are stacked upward in this order. In the fourth process machine group G 4 , eight open type process machines such as a cooling machine (COL), an extension/cooling machine (EXTCOL), an extension machine (EXT), a cooling machine (COL), two pre-baking machines (PREBAKEs), and two post-baking machines (POBAKEs) are stacked upward in this order. 
     As described above, in the fourth process machine group G 4 , the cooling machine (COL) and the extension/cooking machine (EXTCOL) which have lower process temperatures are arranged in the lower stage, while the pre-baking machines (PREBAKEs), the post-baking machines (POBAKEs), and the adhesion machine (D) which have higher process temperatures are arranged in the upper stage. This can eliminate thermal interference between the machines. These machines may be arranged at random as multi-stage units, as a matter of course. 
     The interface section  12  has a size equal to that of the process station  11  in the direction of depth (X direction) but has a size much smaller than that of the process station  11  in the widthwise direction. A transportable pickup cassette CR and a stationary buffer cassette BR are stacked on the front surface side of the interface section  12 , while a peripheral exposure device  23  is arranged on the rear surface side of the interface section  12 . A wafer conveyor  24  is arranged at the center of the interface section  12 . The wafer conveyor  24  can move in the X and Z directions to access the cassettes CR and BR and the peripheral exposure device  23 . The wafer conveyor  24  is rotatable in the θ direction and can also access the extension machine (EXT) belonging to the multi-stage units of the fourth process machine group G 4  on the process station  11  side and an adjacent wafer transfer table (not shown) on the exposure machine side. 
     In the coating/developing process system  1 , the multi-stage units of the fifth process machine group G 5  indicated by the broken lines in FIG. 1 can be arranged on the rear surface side of the main wafer transport mechanism  22 . The multi-stage units of the fifth process machine group G 5  can shift laterally along guide rails  25  when viewed from the main wafer transport mechanism  22 . Even if the multi-stage units of the fifth process machine group G 5  are arranged, as illustrated in FIG. 1, they can slide along the guide rails  25  to assure the space for maintenance of the main wafer transport mechanism  22  from the rear side. The multi-stage units of the fifth process machine group G 5  need not slide and shift linearly along the guide rails  25 , but can pivot and shift outside the system, as indicated by the chain-line double-headed arrow in FIG.  1 . This easily assures the space for maintenance of the main wafer transport mechanism  22 . 
     A touch panel type display  26  serving as a main-machine interface connected to a control unit (to be described later) is arranged at the upper middle portion of the front surface side of the interface section  12 . System configuration editing, monitor method setting, and the like in each process described above are performed at the display  26 . In system configuration editing, for example, a series of processes and the processing contents of each process are displayed on the display  26  in the form of, e.g., a table. The user selects a predetermined command in accordance with the display contents to edit the system configuration. The user inputs commands or data by touching the display  26  with a fingertip. However, the commands or data can be input using a keyboard, a mouse, or the like. 
     The control unit of the coating/developing process system  1  having the above arrangement will be described below. FIG. 4 is a block diagram showing the arrangement of this control unit. 
     As shown in FIG. 4, a control unit  28  comprises a controller  29  for controlling the entire system and a storage  30  storing control programs and the like. The control unit  28  is connected to input devices  26   a  and  26   b  of the display  26  and the respective devices such as motors of the coating/developing process system  1  through interfaces (I/F)  31 ,  32 , and  33 . 
     The windows displayed on the display  26  will be described with reference to FIGS. 5 to  7 . 
     As shown in FIGS. 5 to  7 , a title column  34  representing processing contents, a window selection button  35 , a content display column  36  representing the contents in the form of a table, a command line  37 , and a scroll button group  38  are displayed at the upper left end, the upper right end, almost the center, and the bottom, and the right middle portion of the screen, respectively. The scroll button group  38  includes line scroll buttons  39  and  40  and page scroll buttons  41  and  42 . The page scroll button  41 , the line scroll button  39 , the line scroll button  40 , and the page scroll button  42  are arranged downward in this order. When the user touches one button of the scroll button group  38 , the display contents change as if the touched button were actually clicked on. 
     As shown in FIG. 8, part (e.g., one page) of the display data is displayed in the content display column  36 . In principle, every time the user clicks on the line scroll button  39 , the lines of the immediately preceding page are scrolled and displayed. Every time the user clicks on the line scroll button  40 , the lines of the immediately succeeding page are scrolled and displayed. Similarly, every time the page scroll button  41  is clicked on, the preceding pages are scrolled and displayed. Every time the page scroll button  42  is clicked on, the succeeding pages are scrolled and displayed. Assume that one of the buttons is kept clicked on. In this case, when the first period has elapsed, e.g., when 1 sec has elapsed, scrolling advances every second period, e.g., every 0.3 sec. For example, when the line scroll button  39  is kept clicked on, the lines of the immediately preceding page are sequentially scrolled and displayed. 
     An arrangement for realizing “scroll display” according to the present invention will be described below. 
     FIG. 9 is a view for explaining some of the contents of the storage  30  in the control unit  28 . The storage  30  has an input control program area  43  storing an input control program for performing input control of the display  26 , a display control program area  44  storing a display control program for performing display control of the display system  26   a  of the display  26 , and a flag area  45  having a flag which can be commonly recognized by the input and display control programs. The input control program is often called a touch panel driver (TPD), while the display control program is often called a man-machine interface (MMI). However, these programs need not be limited to the specific ones if the functions of the present invention can be performed. 
     FIG. 10 shows a display section comprising an application unit  53  including a touch panel  51 , a touch panel driver (TPD)  52 , a man-machine interface (MMI), X-window  54  and GDS (global data system)  55 . 
     The touch panel driver  52  provides with a mess thread circuit  58 , a panel thread circuit  57  and an inter thread circuit  56 . The mess thread circuit  58  receives messages from the panel thread circuit  57  and the inter thread circuit  56  and sends the message to the application unit  53  and touch panel  51 . The panel thread circuit  57  receives data from the touch panel  51  and sends it to the mess thread circuit  58 . Also, the inter thread circuit  56  performs the control for continuous input of the scroll button and the control for decrease of the interval time of the keyboard screen. 
     FIG. 11 is a flow chart showing the operations of the input and display control programs. Steps  101  to  106  and steps  110  to  114  show the operation of the input control program, while steps  107  to  109  show the operation of the display control program. 
     Assume that the line scroll button  39  is kept clicked on for a predetermined period. When the line scroll button  39  is clicked on, the input control program detects this click-on (step  101 ) and determines whether the flag in the flag area  45  is to be reset (flag clear). For a button click-on (start of input period, i.e., start of first period), the flag operation (step  102 ) is neglected, and the button click-on is transmitted to the display control program (step  103 ). 
     Upon reception of the button depression (step  107 ), the display control program reconstructs the window on the display  26  (step  108 ). In this case, the window is reconstructed as if the line scroll button  39  were actually depressed. The display control program then sets the flag of the flag area  45  (step  109 ). 
     After transmitting the button click-on event to the display control program as described above (step  103 ), the input control program determines whether the first period has elapsed (step  104 ). If NO in step  104 , the input control program loads the flag of the flag area  45  (step  105 ) and determines whether an auto-repeat operation according to the present invention is to be performed (step  106 ). That is, when the flag of the flag area  45  is set, the auto-repeat operation is performed; otherwise, the auto-repeat operation is not performed. The auto-repeat operation will be described in detail later. 
     If NO in step  106 , the flow returns to click-on step  101 . If YES in step  106 , it is determined whether the button is clicked off (step  110 ). If NO in step  110 , the flow returns to step  104 ; otherwise, the flow returns to step  102 . In step  102 , the flag is cleared, and event transmission step  103  is neglected. It is determined in step  104  whether the first period has elapsed. If NO in step  104 , the flag is loaded in step  105 , and the flow advances to step  106 . At this time, since the flag has been cleared, NO is determined in the auto-repeat operation determination step  106 , and the flow returns to step  101 . That is, the window is not reconstructed even if the button is clicked on a plurality of number of times within the first period. 
     If YES in step  104 , i.e., when it is determined that the first period has elapsed, it is determined whether the second period has elapsed (step  111 ). If NO in step  111 , the flag of the flag area  45  is loaded (step  112 ), and it is determined whether the auto-repeat operation is to be performed (step  113 ). 
     If NO in step  113 , the flow returns to click-on step  101 ; otherwise, it is determined whether the button is clicked off (step  114 ). If YES in step  114 , the flow returns to step  102 ; otherwise, the flow returns to step  111 . 
     In step  102 , the flag is cleared, and event transmission step  103  is neglected. It is determined in step  104  whether the first period has elapsed. Since the first period has already elapsed, YES is obtained in step  104 . It is then determined in step  111  whether the second period has elapsed. If NO in step  111 , the flag is loaded in step  112 , and the flow advances to step  113 . At this time, since the flag has already been cleared, NO is obtained in auto-repeat operation determination step  113 , and the flow returns to step  101 . That is, no window reconstruction is performed even if the button is clicked a plurality of number of times within the second period. The same window as in the first period is constructed before the first elapse of the second period. 
     If YES in step  111 , that is, when the first elapse of the second period is determined, the flow advances to step  108 . In step  108 , the same window as in the first period before the first elapse of the second period is reconstructed into a next window. 
     In the above operation, when the line scroll button  39  is clicked off upon the elapse of the predetermined period, the input control program inputs this as a button click-off event (step  110 ) and determines whether the flag of the flag area  45  is to be reset (flag clear). For the button click-off event (end of input period), the flag is reset (step  102 ), and the button click-off event is transmitted to the display control program (step  103 ). 
     Upon reception of the button click-off event (step  107 ), the display control program reconstructs the window on the display  26  (step  108 ). In this case, the window is reconstructed as if the line scroll button  39  were actually clicked off. The display control program then determines whether the flag of the flag area  45  is to be set. For the button click-off event, the operation for the flag of the flag area  45  is neglected (step  109 ). 
     In the same manner as described above, the input control program transmits the button click-off event to the display control program (step  103 ), confirms whether the first period has elapsed (step  104 ), loads the flag of the flag area  45  (step  105 ), and determines whether to perform the auto-repeat operation (step  106 ). 
     Consequently, the following operations have been performed. 
     (1) The flag of the flag area  45  is kept set during click-on of the button, and the flag is kept reset during the period except click-on of the button. 
     (2) When the button is touched with a fingertip on the screen, the display contents change as if the button were actually clicked on; when the button on the screen is clicked off, the display contents change as if the button were actually clicked off. 
     According to the above display operation, the event transmission based on continuous click-on, basically, is performed by the inter thread circuit  56 , while the event transmission based on no continuous click-on is performed by the panel thread circuit  57 . 
     Upon clicking on, data is transmitted from the panel thread circuit  57  to the mess thread circuit  58 . When the click-off is performed within the first period, data is transmitted from the panel thread circuit  57  to the mess thread circuit  58 . If the click-off is not performed within the first period, data is transmitted from the inter thread circuit  56  to the mess thread circuit  58 . Thereafter, if the click-off is not performed within the second period, data is transmitted from the inter thread circuit  56  to the mess thread circuit  58 . 
     FIG. 12 is a view for explaining the auto-repeat operation. 
     More specifically, in this operation, the flag of the flag area  45  is loaded, the elapse of the first period, e.g., 0.7 sec from the start (button click-on) of the input period is detected on the basis of this flag, and at the same time the elapse of the second period, e.g., 0.3 sec upon the elapse of the first period is repeatedly detected. When the end (button click-off) of the input period is detected before the first elapse (within one sec in this embodiment) of the second period, button click-on is regarded to be performed once. As a result, the last line of the immediately preceding page moves down and is displayed in the window. 
     When the input period, however, continues (one or more sec in this embodiment), the last line of the immediately preceding page moves down and is displayed in the window every time the second period, e.g., 0.3 sec has elapsed. 
     More specifically, as shown in FIG. 12, (1) when the button is clicked off within the first period, the display contents move down by one line; (2) when the button is clicked off before the first elapse of the second period upon the elapse of the first period, the display contents move down by one line; (3) when the button is clicked off before the second elapse of the second period after the first elapse of the second period, the display contents move down by two lines; and (4) when the button is clicked off before the third elapse of the second period after the second elapse of the second period, the display contents move down by three lines. 
     In this embodiment, the operations performed upon click-on of the line scroll button  39  are exemplified. However, similar operations can be performed when the line scroll button  40 , the page scroll button  41 , or the page scroll button  42  is clicked on. 
     In the touch panel type display apparatus in the coating/developing process system  1  to which the present invention is applied, the line scroll button  39  or  40 , or the page scroll button  41  or  42  is kept clicked on to continuously scroll a plurality of lines or pages, thereby facilitating scrolling. In addition, even if such a button is clicked on, continuous scrolling does not start until the first elapse (e.g., one sec) of the second period. Even if a wrong button is clicked on a plurality of number of times consecutively, scrolling does not inadvertently continue. In particular, the coating/developing process system  1  of this embodiment has a large number of processes because the resist coating process combines with the developing process. For this reason, the table displayed on the display is considerably long and often requires continuous scrolling. When the present invention is applied to this coating/developing process system  1 , operation simplification results in an enhanced effect. 
     In the above embodiment, the first and second periods are set as 0.7 sec and 0.3 sec, respectively. However, other lengths of time can be used. When the first period is set longer than the second period, scrolling matching the human sense can be achieved. However, the first period may be set equal to the second period. Alternatively, the second period may be set longer than the first period, or the second period need not be a fixed period. For example, when the second period is set to gradually shorten, the scroll speed can be gradually increased with an increase in the elapse of click-on time. 
     In the above embodiment, the input control program, the display control program, and the flag area are provided to realize the present invention. However, these programs may be unified to realize the present invention. 
     As has been described above, according to the present invention, an input control apparatus comprises an input detector for detecting a start and end of an input period, and a period detector for detecting an elapse of a first period from the start of the input period and repeatedly detecting an elapse of a second period upon the elapse of the first period, wherein it is determined that an input is complete with only one input operation when the end of the input period is detected before the first elapse of the second period, and it is determined that an input operation is made every elapse of the second period when the input period continues. A smooth, continuous input operation is allowed while preventing an operation error caused by consecutive click-ons. 
     According to the present invention, the input control unit comprises an input detector for detecting a start and end of an input period, a notification circuit for notifying the display control unit of a detection result of the input detector, a period detector for detecting an elapse of a first period from the start of the input period and repeatedly detecting an elapse of a second period shorter than the first period upon the elapse of the first period, and a determining circuit for determining that an input is complete with only one input operation when the end of the input period is detected before the first elapse of the second period, and determining that an input operation is made every elapse of the second period when the input period continues, and the display control unit comprises a reception circuit for receiving notification of the detection result from the input control unit and a controller for controlling display in accordance with the received notification of the detection result. Even if the input control unit and display control unit are present separately, a smooth, continuous input operation is allowed while preventing an operation error caused by consecutive click-ons. 
     In addition, according to the present invention, the input control unit comprises an input detector for detecting a start and end of an input period, a reflecting circuit for reflecting a detection result of the input detection means on the flag area, a notification circuit for notifying the display control unit of the detection result, a period detector for detecting an elapse of a first period from the start of the input period on the basis of a recognition result of the flag area and repeatedly detecting an elapse of a second period shorter than the first period upon the elapse of the first period on the basis of the recognition result of the flag area, and a determining circuit for determining that an input is complete with only one input operation when the end of the input period is detected before the first elapse of the second period, and determining that an input operation is made every elapse of the second period when the input period continues, and the display control unit comprises a reception circuit for receiving notification of the detection result from the input control unit, a controller for controlling display in accordance with the received notification of the detection result, and a reflecting circuit for reflecting the received detection result on the flag area. Even if the input control unit and the display control unit are present separately and the input and display control units have a common recognizable flag area, a smooth, continuous input operation is allowed by properly using the flag area while preventing an operation error caused by consecutive click-ons. 
     According to the present invention, in the touch panel type display for displaying input buttons and performing scrolling in accordance with the number of times of inputs to each input button, a smooth, continuous input operation is allowed while preventing an operation error caused by consecutive click-ons. As a result, according to the present invention, smooth scrolling of a plurality of lines or pages is allowed. High-speed scrolling of a plurality of lines or pages is also allowed, and a desired portion can be appropriately displayed. 
     Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalent.