APPARATUS FOR TURNING PAGES OF A BOOK AND METHOD FOR SAME

Abstract

An apparatus for turning a page of an opened book includes an arm section which has an adhesion member provided on a tip end portion; a driving section which reciprocates the adhesion member via the arm section; a detection section which detects an overcurrent applied to the driving section; and a control section which controls timing at which the adhesion member that is reciprocated by the driving section starts reverse rotation. The control section, when reversing a moving direction of the adhesion member from a direction toward a starting point of page turning to a direction toward an end point of the page turning, reverses the moving direction based on a timing of the overcurrent by the detection section.

Claims

1. An apparatus for turning a page of an opened book, comprising: an arm section which has an adhesion member provided on a tip end portion; a driving section which reciprocates the adhesion member via the arm section; a detection section which detects an overcurrent applied to the driving section; and a control section which controls timing at which the adhesion member that is reciprocated by the driving section starts reverse rotation, wherein the control section, when reversing a moving direction of the adhesion member from a direction toward a starting point of page turning to a direction toward an endpoint of the page turning, reverses the moving direction based on a timing of the overcurrent by the detection section.

2. The apparatus according to claim 1, further comprising: an interface with an external device, wherein, every time each page turning operation is completed, the control section outputs information indicating completion of the each page turning operation, via the interface to the external device.

3. The apparatus according to claim 1, further comprising: an interface with an external device, wherein, when information indicating completion of image capturing or information for giving an instruction to start a page turning operation is received from the external device via the interface, the control section makes transition to a next page turning operation.

4. A method for turning a page of an opened book, comprising: reciprocating an adhesion member via an arm section; detecting an overcurrent applied to a motor for moving the arm section; and reversing a moving direction of the adhesion member at a timing of the overcurrent, when reversing the moving direction from a direction toward a starting point of page turning to a direction toward an end point of the page turning.

5. The method according to claim 4, further comprising: every time each page turning operation is completed, outputting information indicating completion of the each page turning operation, to an external device.

6. The method according to claim 4, further comprising: when information indicating completion of image capturing or information for giving an instruction to start a page turning operation is received from an external device, making transition to a next page turning operation.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention can be more deeply understood by the detailed description below being considered together with the following drawings.

[0020] FIG. 1 is a perspective view of the outer appearance of a page turning apparatus according to a first embodiment of the present invention;

[0021] FIG. 2 is a block diagram showing the structure of the page turning apparatus according to the first embodiment, such as a control circuit and a peripheral drive system thereof;

[0022] FIG. 3A and FIG. 3B are timing charts for describing the page turning operation of the page turning apparatus according to the first embodiment;

[0023] FIG. 4 is a block diagram showing the structure of a page turning apparatus according to a second embodiment, such as a control circuit and a peripheral drive system thereof;

[0024] FIG. 5 is a timing chart for describing the page turning operation of the page turning apparatus according to the second embodiment;

[0025] FIG. 6A, FIG. 6B, and FIG. 6C are schematic diagrams for describing the page turning operation of a conventional page turning apparatus; and

[0026] FIG. 7A and FIG. 7B are timing charts for describing the page turning operation of the conventional page turning apparatus.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Embodiments of the present invention will hereinafter be described with reference to the drawings.

A. First Embodiment

[0028] FIG. 1 is a perspective view of the outer appearance of a page turning apparatus according to a first embodiment of the present invention. The page turning apparatus 30 in FIG. 1 includes book stands 32-1 and 32-2 where a book 3 is placed, an arm section 33, an arm motor 35 that drives the arm section 33 with its driving shaft 34 as the center, an adhesion roller 36 attached to a tip end portion of the arm section 33, an adhesion roller motor 38 that rotates the adhesion roller 36 with its driving shaft 37 as the center, and an assist fan 39 for detaching a page from the adhesion roller 36 by blowing air to the page adhered to the adhesion roller 36. In a method according to the first embodiment, each page is turned over by the adhesion roller 36 attached to the tip end portion of the arm section 33 being adhered to a page surface of the book 3 and the arm section 33 being rotated in the opposite direction.

[0029] FIG. 2 is a block diagram showing the structure of the page turning apparatus according to the first embodiment, such as a control circuit and a peripheral drive system thereof. Note that sections corresponding to those in FIG. 1 are provided with the same reference numerals. A control circuit 40 of the page turning apparatus 30 in FIG. 2 includes a CPU (Central Processing Unit) 41, a Wi-Fi (Wireless Fidelity) module 42, a power supply control section 43, an arm motor control section 44, an adhesion roller motor control section 45, and an assist fan control section 47.

[0030] The Wi-Fi module 42 is connected to a tablet (smartphone) 50 by Wi-Fi communication. When a start command is received from the tablet (smart phone) 50 via the Wi-Fi module 42, the CPU 41 starts a page turning operation, and transmits a signal for turning a page to the tablet (smart phone) 50 every time a page is turned over. Here, every time this page turning signal is received from the CPU 41 via the Wi-Fi module 42, the tablet (smart phone) 50 photographs a page of the book by its built-in imaging section (not shown). The power source control section 43 supplies direct-current voltage from an external AC/DC adaptor 51 to each section of the control circuit 40.

[0031] The arm motor control section 44 controls the operation of the arm motor 35 that drives the arm section 33 for pressing the adhesion roller 36 against a page of the book 3 so as to turn over the page. This arm motor control section 44 includes a current detection section 441. Upon detecting an overcurrent in the arm motor 35 (which is limited to, for example, 1A by a limiter), the current detection section 441 lowers the level of a current limit notice CULMTn which is normally at high level to a low level. The adhesion roller motor control section 45 controls the operation of the adhesion roller motor 38 that rotates the adhesion roller 36 with the driving shaft 37 shown in FIG. 1 as the center when the adhesion roller 36 and paper are detached.

[0032] The assist fan control section 47 controls the operation of the assist fan 39 that blows air to a page adhered to the adhesion roller 36 and turned over by the rotation of the arm section 33 so that the page is detached from the adhesion roller 36.

[0033] The CPU 41 performs the integration control of the above-described sections. Specifically, when a falling edge of a current limit notice CULMTn indicating the detection of an overcurrent by the current detection section 441 is detected in a page turning operation, the CPU 41 controls a pressing period (locking period) during which the adhesion roller 36 is pressing a page by performing drive control such that the arm motor 35 is rotated backward by the arm motor control section 44.

[0034] FIG. 3A and FIG. 3B are timing charts for describing the page turning operation of the page turning apparatus according to the first embodiment. First, the user fixes the book 3 on the book stand 32-1 of the page turning apparatus 30, and subsequently gives an instruction to start a page turning operation by using the tablet (smartphone) 50. Upon receiving this start instruction for a page turning operation via the Wi-Fi module 42, the CPU 41 of the page turning apparatus 30 sets control signal IN1 for the arm motor control section 44 at high level, and sets control signal IN2 at low level (time ta1). Then, in response to the control signals IN1 and IN2, the arm motor control section 44 causes the arm motor 35 to perform normal rotation so that the arm section 33 is driven and rotated from the start point SP to the adhesion point AP1 (AP2). Here, from the start of the driving until the adhesion roller 4 comes in contact with a page of the book 3, current in the arm motor 35 gradually becomes small.

[0035] Then, when the arm section 33 reaches the return point RP side (time ta2), the adhesion roller 36 attached to the end portion of the arm section 33 presses the page of the book 3. Here, the pressed page adheres to the adhesion roller 36. The arm section 33 is stopped distance B short of the return point RP by the thickness of unturned pages of the book 3 (refer to FIG. 6B), and an overcurrent (limited to, for example, 1A by the limiter) is applied to the coil of the arm motor 35 (from time ta2).

[0036] Upon detecting the overcurrent in the arm motor 35, the current detection section 441 lowers the level of the high-level current limit notice CULMTn to the low level (time ta3). In addition, at a falling edge of the current limit notice CULMTn indicating the detection of the overcurrent (for example, 1A) by the current detection section 441, the CPU 41 sets control signal IN1 for the arm motor control section 44 at low level, and sets control signal IN2 at high level (time ta4). Moreover, the arm motor control section 44 causes the arm motor 35 to perform reverse rotation (from time ta4) so that the arm section 33 is driven and rotated from the adhesion point AP1 to the start point SP.

[0037] Then, when the arm motor 35 performs reverse rotation, the page adhering to the adhesion roller 36 of the arm section 33 is turned over. Subsequently, when the arm section 33 reaches the start point SP of the book stand 32-2 side, the adhering page is detached from the adhesion roller 36 and guided to the book stand 32-2 side by the rotation of the adhesion roller motor 38 by the adhesion roller motor control section 45 and air from the assist fan 39 by the assist fan control section 47.

[0038] Here, the CPU 41 transmits a page turning signal to the tablet (smartphone) 50 via the Wi-Fi module 42, and the tablet (smartphone) 50 photographs the page of the book 3 upon receiving the page turning signal.

[0039] Then, at predetermined timing, the CPU 41 of the page turning apparatus 30 drives and rotates the arm section 33 toward the book stand 32-1 side so as to return the arm section 33 and the adhesion roller 36 to the book stand 32-1 side, and repeats the above-described operations.

[0040] In the beginning of this consecutive image capturing, the above-described period between time ta2 and time ta3 during which an overcurrent is applied corresponds to a pressing period (locking period) T1s during which the adhesion roller 36 presses a page of the book 3.

[0041] Similarly, at the end of the consecutive image capturing, the CPU 41 sets control signal IN1 for the arm motor control section 44 at high level, sets control signal IN2 at low level (time tb1), and causes the arm motor 35 to perform normal rotation by the arm motor control section 44. In this case, since there are no remaining pages on the book stand 32-1 side, the arm section 33 reaches the adhesion point AP2 (return point RP) (refer to FIG. 6C; time tb2). In addition, an overcurrent (limited to, for example, 1A by a limiter) is applied to the coil of the arm motor 35 (from time tb2).

[0042] Then, upon detecting the overcurrent in the arm motor 35, the current detection section 441 lowers the level of the high-level current limit notice CULMTn to the low level (time tb3). Subsequently, at a falling edge of the current limit notice CULMTn, the CPU 41 sets control signal IN1 for the arm motor control section 44 at low level, and sets control signal IN2 at high level (time tb4). Then, the arm motor control section 44 causes the arm motor 35 to perform reverse rotation (from time tb4) so that the arm section 33 is driven and rotated from the adhesion point AP1 (AP2) to the start point SP.

[0043] In the end of the consecutive image capturing, the above-described period between time tb2 and time tb3 during which an overcurrent is applied corresponds to a pressing period (locking period) T1e during which the adhesion roller 36 presses a page of the book 3.

[0044] According to the above-described first embodiment, the rotation of the arm motor 35 is changed from normal rotation to reverse rotation based on the current limit notice CULMTn indicating the detection of overcurrent in the arm motor 35 by the current detection section 441. As a result of this configuration, the pressing period T1s (locking period: time ta2 to time ta3) in the beginning of consecutive image capturing and the pressing period T1e (locking period: time tb2 to time tb3) in the end of the consecutive image capturing can be controlled to be substantially the same.

[0045] Also, according to the first embodiment, the rotation of the arm motor 35 is changed from normal rotation to reverse rotation based on the current limit notice CULMTn indicating the detection of overcurrent in the arm motor 35 by the current detection section 441. As a result of this configuration, the pressing period T1s (locking period: time ta2 to time ta3) during which the adhesion roller 36 presses a page of the book 3 in the beginning of consecutive image capturing can be shorten, whereby an increase in power consumption can be prevented, and the life spans of the brush and the coil of the arm motor 35 can be prevented from becoming extremely short.

[0046] In the first embodiment, by its configuration where the lengths of the pressing periods T1s and T1e are controlled to be substantially the same, a normal rotation driving period in a page turning operation is, for example, 1.0s-tPREM in the beginning of consecutive image capturing, and 1.0s in the end of the consecutive image capturing. That is, periods of time required for page turning are different between that in the beginning of image capturing and that in the end of the image capturing. Accordingly, in the first embodiment, a page turning signal indicating the completion of each page turning operation is transmitted to the tablet (smartphone) 50 so as to indicate photographing timing for the tablet (smartphone) 50 side, whereby its convenience is not hampered.

[0047] In the configuration of the first embodiment, transition to a next page turning operation is made regardless of whether a photographing operation by the tablet (smartphone) 50 has been completed. However, a configuration may be adopted in which transition to a next page turning operation is made when an instruction to end image capturing is transmitted from the tablet (smartphone) 50 and received by the page turning apparatus 30.

B. Second Embodiment

[0048] Next, a second embodiment of the present invention is described.

[0049] FIG. 4 is a block diagram showing the structure of a page turning apparatus according to the second first embodiment, such as a control circuit and a peripheral drive system thereof. Note that sections corresponding to those of FIG. 2 are provided with the same reference numerals and explanations thereof are omitted.

[0050] An input and output I/F (Interface) 49 in FIG. 4 inputs an operation signal from an operation section 54. This operation section 54 is constituted by a power switch and various switches such as a page turning start switch. In particular, in the second embodiment, the operation section 54 includes a selection key for inputting the paper type (for example, low-quality paper, regular paper, or high-quality paper) of a book.

[0051] The CPU 41 sets a brake applying period tMBRK in a brake control register 411 based on the paper type of a book inputted from the operation section 54. Note that this brake applying period tMBRK is determined in advance based on each paper type of books. More specifically, this brake applying period tMBRK becomes longer in the order of low-quality paper (long), regular paper, and high-quality paper. When an overcurrent is detected by the current detection section 441 during a page turning operation, the CPU 41 controls the pressing period during which the adhesion roller 36 is pressing the page, based on the set brake applying period tMBRK.

[0052] FIG. 5 is a timing chart for describing the page turning operation of the page turning apparatus according to the second embodiment. First, the CPU 41 of the page turning apparatus 30 sets a brake applying period tMBRK in the brake control register 411 based on the paper type of a book inputted from the operation section 54. Then, upon receiving an instruction to start a page turning operation via the Wi-Fi module 42, the CPU 41 sets control signal IN1 for the arm motor control section 44 at high level, and sets control signal IN2 at low level (time tc1). Then, in response to these control signals IN1 and IN2, the arm motor control section 44 causes the arm motor 35 to perform normal rotation so as to drive and rotates the arm section 33 from the start point SP to the adhesion point AP1 (AP2).

[0053] When the arm section 33 reaches the return point RP side (time tc2), the adhesion roller 36 attached to the end portion of the arm section 33 presses a page of the book 3, whereby the page adheres to the adhesion roller 36. Here, an overcurrent (restricted to, for example, 1A by a limiter) is applied to the coil of the arm motor 35 (from time tc2).

[0054] Next, upon detecting the overcurrent in the arm motor 35, the current detection section 441 lowers the level of the high-level current limit notice CULMTn to the low level (time tc3). Subsequently, upon detecting a falling edge of the current limit notice CULMTn, the CPU 41 sets control signal IN1 for the arm motor control section 44 to be at high level and control signal IN2 to be at high level for a period corresponding to the brake applying period tMBRK set in the brake control register 411 (time tc3 to time tc4).

[0055] When control signal IN1 is set at high level and control signal IN2 is set at high level, the arm motor control section 44 shunts the input end of the arm motor 35, and applies a brake to the arm motor 35 so that the arm motor 35 is not rotated. That is, in a period between time tc3 to time tc4, a brake is applied to the arm motor 35 so that it is not rotated by external force, whereby the page can be unfailingly adhered to the adhesion roller 36.

[0056] Then, when the brake applying period tMBRK elapses, the CPU 41 sets control signal IN1 for the arm motor control section 44 at low level, and sets control signal IN2 at high level (time tc5). In addition, the arm motor control section 44 causes the arm motor 35 to perform reverse rotation so that the arm section 33 is rotated from the adhesion point AP1 (AP2) to the start point SP (from time tc5). Note that operations hereafter are the same as those of the first embodiment and therefore explanations thereof are omitted.

[0057] According to the above-described second embodiment, the pressing period T1s in the beginning of image capturing (locking period: time ta2 to time ta3) and the pressing period T1e in the end of the image capturing (locking period: time tb2 to time tb3) can be substantially the same, or the pressing period T1s (locking period: time ta2 to time ta3) during which the adhesion roller 36 presses a page of the book 3 in the beginning of image capturing can be shorten, whereby an increase in power consumption can be prevented, and the life spans of the brush and the coil of the arm motor 35 can be prevented from becoming extremely short.

[0058] Also, according to the second embodiment, a brake is applied to the arm motor 35 with the adhesion roller 36 pressing a page of the book 3, based on the brake applying period tMBRK set according to the paper type (for example, low-quality paper, regular paper, or high-quality paper) of the book. Therefore, pages can be unfailingly adhered to the adhesion roller 36 even when a different type of book is photographed.

[0059] In the second embodiment, the brake applying period tMBRK is set according to the paper type (for example, low-quality paper, regular paper, or high-quality paper) of a book. However, it may be set by setting an arbitrary period by the tablet (smartphone) 50.

[0060] While the present invention has been described with reference to the preferred embodiments, it is intended that the invention be not limited by any of the details of the description therein but includes all the embodiments which fall within the scope of the appended claims.