JP2011123301A - Method for detecting staining of display input device, the display input device, and automatic transaction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for detecting staining of a display input device for reliably detecting the staining attached to a display input device 4 operated by a customer without adding a new expensive configuration thereto. <P>SOLUTION: The display input device 4 is configured of a liquid crystal panel which incorporates a photosensor, a differential amount of received light quantity with respect to the scanning direction is determined and, when the absolute value of the differential amount reaches a first threshold α or more, it is determined that partial staining is attached. Otherwise, when the received light quantity of the photosensor before starting the operation is a reference value, a received light quantity of the photosensor after starting the operation is compared with the reference value and, over substantially whole part, the received light quantity is lowered by a second threshold or more, it is determined that the staining is attached to the whole surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for detecting dirt on a display input device operated by a customer in an automatic transaction apparatus such as an automatic teller machine.

  Conventionally, in a display input device composed of a touch panel and a liquid crystal panel used for an automatic transaction apparatus or the like, the touch panel dirt is detected by providing a line sensor for reading an image on the top of the touch panel and displaying the image on the liquid crystal panel by scanning the line sensor Is detected as a reference value to be used as reference image information, and a touch panel stain is detected by comparing the image information read later with the reference image information, and the surface of the touch panel is cleaned when the stain is detected. (For example, see Patent Document 1).

JP 11-53113 A

  However, in the conventional detection technique, it is necessary to provide a scanner, a camera, and the like as a new configuration, which has been one of the factors that hinder the cost reduction of the apparatus.

  The present invention employs the following configuration in order to solve the above-described problems. That is, a stain detection method for a display input device comprising a liquid crystal panel with a built-in photosensor, wherein the stain on the display input device is detected based on a change amount of the received light amount of the photosensor in a predetermined dot order. .

  According to the automatic transaction apparatus of the present invention, there is provided a stain detection method for a display input device comprising a liquid crystal panel with a built-in photosensor, wherein the display input device is based on a change amount of the received light amount of the photosensor in a predetermined dot order. Therefore, it is possible to detect the dirt reliably without adding a new expensive configuration.

1 is an overview perspective view of an automatic transaction apparatus according to a first embodiment. 1 is a configuration diagram (perspective view) of a display input device of Example 1. FIG. It is a block diagram (sectional drawing) of the display input device of Example 1. FIG. It is a control system block diagram of the automatic transaction apparatus of Example 1. FIG. It is operation | movement explanatory drawing of the display input device of the automatic transaction apparatus of Example 1. FIG. It is operation | movement explanatory drawing of the display input device of the automatic transaction apparatus of Example 1. FIG. It is operation | movement explanatory drawing of the display input device of the automatic transaction apparatus of Example 2. FIG.

  Embodiments of the present invention will be described below with reference to the drawings. Elements common to the drawings are given the same reference numerals. In the following description, an automatic teller machine will be described as an example. However, the present invention can be easily applied to an automatic transaction apparatus such as an automatic ticket vending machine such as a ticket issuing machine or a regular ticket issuing machine.

(Constitution)
(Appearance structure of automatic transaction equipment)
The automatic transaction apparatus 1 according to the first embodiment has an appearance as shown in FIG. 1, and functions as a coin deposit / withdrawal port 2, a bill deposit / withdrawal port 3, a display input device, and a display input device 4 including a photosensor built-in liquid crystal panel. , A passbook insertion slot 5 and a card insertion slot 6 are provided.

  The bill deposit / withdrawal port 3 is an opening through which bills are inserted and discharged. The bill deposit / withdrawal port 3 is provided with a shutter, and the bill deposit / withdrawal port 3 is opened and closed by driving the shutter.

  When performing a transaction using a card, the card insertion slot 6 is inserted from here and discharged when the transaction ends. The passbook insertion slot 5 is used to insert a passbook used in the transaction from here, and is discharged from here when the transaction ends. The coin deposit / withdrawal port 2 is an opening through which coins are inserted or discharged.

  And the banknote processing part 26 which performs the deposit / withdrawal process of the below-mentioned banknote is provided in the back part of the banknote depositing / withdrawing port 3, and the below-mentioned card processing part 21 is provided in the back part of the card insertion slot 6. It has been.

  A coin processing unit 25 (to be described later) for performing coin deposit / withdrawal processing is provided at the back of the coin deposit / withdrawal port 2, and a passbook processing unit 23 (to be described later) is provided at the back of the passbook insertion outlet 5. Yes.

  The display input device 4 has a configuration described later. The display input device 4 performs various inputs according to customer operations and displays operation guidance and the like. In addition, a fluorescent lamp or the like provided in advance at the installation location of the automatic transaction apparatus 1 is arranged as a light source 10 at the upper part of the automatic transaction apparatus 1.

  The display input device 4 has a structure as shown in the perspective view of FIG. 2 and the cross-sectional view of FIG. 3, and is provided on the upper surface and the surface of the backlight 120 and the backlight 120 as a normal liquid crystal panel portion. And an array substrate 122 that functions as an electrical connection circuit with each pixel, and a color filter substrate 124 that functions as a color filter for each pixel.

  The photosensor built-in liquid crystal / photosensor layer 123 includes a photosensor element in addition to the liquid crystal pixel (red) 101r, pixel (green) 101g, and pixel (blue) 101b as shown on the right side of FIG. 100a is provided for each pixel, and has a function as a scanner as well as a display function.

  These liquid crystal pixels and photo sensor elements are driven by a photo sensor driving circuit 100 and a liquid crystal driving circuit 101, respectively, so that the liquid crystal display and the photo sensor operate.

(Internal configuration of automatic transaction equipment)
As shown in FIG. 4, the interior of the automatic transaction apparatus according to the first embodiment is provided in a main control unit 20 that controls each unit to be described later, a display input device 4 that functions as the above-described display input device, and an upper part thereof. The existing light source 10, the card processing unit 21 for reading / writing information recorded on a cash card, the voice guidance unit 22 for outputting guidance by voice or buzzer, and the reading / writing of the magnetic stripe of the bankbook A bankbook processing unit 23 that performs printing control on a banknote, a statement processing unit 24 that prints and outputs a statement slip of transaction details, and a coin that includes a coin deposit / withdrawal safe and a coin loading box (not shown) and performs coin deposit / withdrawal control The processing unit 25 and a banknote processing unit 26 that includes a banknote deposit / withdrawal safe and a banknote loading storage (not shown) and controls banknote deposit / withdrawal.

  Further, a power supply unit 27 that supplies power to each unit, a memory unit 28 that functions as a storage unit of the main control unit, stores programs, control parameters, dirt detection thresholds, and the like, and an interface with a host computer (not shown). It has the interface part 29 to control.

(Operation)
With the above configuration, the automatic transaction apparatus 1 according to the first embodiment operates as follows. This operation will be described in detail with reference to operation explanatory diagrams of the display input device of FIGS.

  In addition, the display input device 4 of the automatic transaction apparatus 1 of Example 1 is demonstrated below as an example which has a screen display area which has a pixel of 1024 dots x 768 dots, as shown in FIG.

  As described with reference to FIG. 2, the display input device 4 according to the first embodiment includes the photosensor element 100a for each pixel (101r, 100g, 100b), and the light from the light source 10 of the fluorescent lamp The amount of light received by the n-th photo sensor element is as shown by the solid line on the upper side of FIG.

  In this example, as shown in FIG. 5, there is a stain 30 that blocks light from the light source 10 at the center portion of the n-th line. The amount of light received by the element decreases as indicated by the a part of the solid line on the upper side of FIG.

  As the amount of change at this time, for example, when the differential amount is obtained, it is as shown by the solid line on the lower side of FIG. 6. Then, the voice guidance unit 22 outputs a guidance indicating that the display input device 4 needs to be cleaned, displays the guidance on the display input device 4, and notifies the host computer by the interface unit 29.

  As described above, the stain determination is not performed based on the differential amount, but the reference value is obtained by smoothing the received light amount, and the stain is detected when the received light amount before smoothing is smaller than the reference value by a predetermined threshold value or more. You may make it determine with existence.

  At this time, it is better to output or display the position of the dirt. Further, in order to accurately detect dirt, it is preferable that dirt is detected when a decrease in the amount of received light is detected in a similar position by a plurality of scans at a predetermined rate or more.

(Effect of Example 1)
As described above in detail, according to the automatic transaction apparatus of the first embodiment, in the automatic transaction apparatus that performs transactions by operating the display input apparatus, the display input apparatus is formed by a photosensor built-in liquid crystal panel, and a predetermined dot Since the contamination of the display input device is detected based on the amount of change in the received light amount of the photosensors in order, partial contamination can be reliably detected without adding a new configuration.

(Constitution)
The appearance configuration, internal configuration, and configuration of the display input device of the automatic transaction apparatus according to the second embodiment are the same as those of the first embodiment, and detailed description thereof is omitted for the sake of brevity.

(Operation)
With the above configuration, the automatic transaction apparatus 1 according to the second embodiment operates as follows. This operation will be described in detail with reference to the operation explanatory diagram of FIG.

  The display input device of the automatic transaction apparatus 1 according to the second embodiment will be described below as an example having pixels of 1024 dots × 768 dots as shown in FIG.

  Similarly to the first embodiment, the display input device 4 according to the second embodiment includes a photosensor element 100a for each pixel (101r, 100g, 100b), and the light from the light source 10 of the fluorescent lamp causes the nth line. The amount of light received by the photosensor element is a graph as shown in FIG.

  Then, before the operation of the automatic transaction apparatus 1, for example, the reference light quantity received by the photosensor element 100a when the apparatus is installed is used as a reference, and the reference light quantity received by the nth line photosensor element becomes like a one-dot chain line. The amount of light received by the n-th photo sensor element after the start of operation becomes as shown by a solid line.

  In the automatic transaction apparatus 1 of the second embodiment, dirt such as cigarette dust and dust adheres to the entire display input apparatus 4, and the entire light is blocked by the dirt. For this dirt, The amount of light received by the photosensor at the center of the n-th line is lower than the reference value by β or more as shown by the solid line in FIG. If this decrease in light quantity is detected and the reference value falls below the predetermined light quantity β, it is determined that there is dirt and that cleaning is required.

  At this time, it is even better to output or display that the entire surface is dirty. Further, in order to accurately detect the dirt, it is preferable that the dirt is detected when a decrease in the amount of received light is detected at a predetermined ratio or more by a plurality of scans.

(Effect of Example 2)
As described above in detail, according to the automatic transaction apparatus of the second embodiment, in the automatic transaction apparatus that performs transactions by operating the display input apparatus, the display input apparatus is formed by a liquid crystal panel with a built-in photosensor, and before the operation is started. Measure the amount of light for each dot as a reference value, compare the amount of light measured after the start of operation with the reference value, and if the amount of light received has decreased by a predetermined amount or more, it can be determined that there is dirt Therefore, it is possible to reliably detect that dirt has adhered to the whole without adding a new configuration.

<< Other modifications >>
In the above description of the embodiment, the light quantity is measured and compared in the order of the dots in the horizontal direction. However, the light quantity may be measured and compared in the order of the dots in the vertical direction and the diagonal direction.

  In the above description of the embodiment, the cleaning when the dirt is detected is not described. However, it is more preferable to provide a mechanism for cleaning the surface of the display input device so as to automatically clean the surface. In this case, whether or not dirt has been removed by cleaning is confirmed by the dirt detection operation described above after cleaning, and if it has been removed, the received light amount after cleaning may be replaced with a reference. On the other hand, when the dirt is not removed, it is preferable that voice output by the voice guidance unit 22 or that effect be displayed on the display input device 4 to encourage cleaning by an attendant.

  As described above, the present invention can be widely used for an automatic transaction apparatus such as an automatic teller machine having a display input device operated by a customer.

DESCRIPTION OF SYMBOLS 1 Automatic transaction apparatus 4 Display input device 10 Light source 20 Main control part 28 Memory | storage part 29 Interface part 30 Dirt 100a Photosensor element 101r, 101g, 101b Liquid crystal pixel

Claims (5)

A stain detection method for a display input device comprising a liquid crystal panel with a built-in photosensor,
A stain detection method for a display input device, characterized in that the stain on the display input device is detected based on a change amount of the received light amount of the photosensor in a predetermined dot order.   The predetermined dot order is the dot order in the scanning direction, the amount of change is a differential amount, and it is determined that dirt is attached when the absolute value of the differential amount is equal to or greater than a first threshold value. 2. A method for detecting dirt in a display input device according to claim 1, wherein the method is used. A stain detection method for a display input device comprising a liquid crystal panel with a built-in photosensor,
The amount of light received by the photosensor before the start of operation is used as a reference value, and the amount of light received by the photosensor after the start of operation is compared with the reference value. The amount of light received is substantially lower than the second threshold. A method for detecting dirt on a display / input device, characterized in that when it is determined that dirt is attached to the entire surface.   A display input device characterized in that dirt is detected by using the dirt detection method according to any one of the first to third embodiments.   An automatic transaction apparatus comprising the display input device according to claim 4.

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