JP6792498B2 - Analog electronic clock system and analog electronic clock - Google Patents

Description

The present invention relates to analog electronic clock systems and analog electronic clocks.

An analog electronic clock that can send and receive information via wireless communication with a terminal device owned by a user has been proposed. An analog electronic clock uses a step motor to rotate a group of pointers such as the second hand, minute hand, hour hand, and date plate to position the pointer group at a display position based on the internal time and allow the user to recognize the current time. .. In analog electronic clocks, the pointer group may shift due to various external factors. In this case, the current internal time and the current display time based on the current display position of the pointer group will be different. Therefore, the analog electronic clock is provided with a display position correction function (see Patent Document 1).

To correct the display position, the user takes an image of the dial including the pointer group with a terminal device, detects the current display position of the pointer group based on the generated image, and relatives to the predicted display position based on the current internal time. There is a device that corrects the display position of the pointer group based on the deviation of the current display position. By the way, unlike the second hand, the minute hand, and the hour hand, the day plate rotates on the lower side of the dial, and a part of the day plate is exposed on the upper side of the dial by a small window. Therefore, in the detection of the current display position of the date plate, the exposed portion, which is the portion exposed from the small window to the upper side of the dial, is the detection target. For example, if a plurality of characters in the character group for identifying the "day" formed on the sheet glass, for example, the entire shape of each number 1 to 31 is exposed in the exposed portion, the current display position on the sheet glass can be detected. It can be done easily.

Japanese Patent No. 4200835

However, if the part of the day plate between the characters is an exposed part, it is difficult to detect the current display position with respect to the day plate because the entire character is not an exposed part, and the display position with respect to the day plate. It becomes difficult to make a reliable correction.

The present invention has been made in view of the above, and is an analog electronic clock system and an analog electronic clock capable of reliably correcting the display position with respect to a rotating plate in which a part is exposed above the dial from a small window. The purpose is to provide.

In order to solve the above-mentioned problems and achieve the object, the analog electronic clock system in the present embodiment rotates a dial having a small window and the lower side of the dial, and from the small window to the dial. It has a rotating plate with a part exposed on the upper side, a clock-side communication unit capable of transmitting and receiving information to and from the outside, a drive mechanism unit for rotating the rotating plate, and at least an internal time of the clock. A clock-side control unit that controls the rotational drive of the rotating plate by the driving mechanism unit based on the above, and the rotating plate is a series of identifying either a calendar or a time counting time at a position exposed from the small window. A plurality of characters in the character group are formed in the circumferential direction, and a plurality of identification patterns having one relation and different from each other are formed between the characters adjacent to each other in the circumferential direction of the character group. Corresponds to the analog electronic clock, the terminal-side communication unit capable of transmitting and receiving information to and from the outside, and at least the small window, and the exposed portion of the small window and the rotating plate exposed from the small window. An imaging unit that generates a small window image including an image to be used, and a terminal-side control unit that detects the identification pattern based on the small window image and detects the current display position of the rotating plate based on the detected identification pattern. The analog electronic clock corrects the display position of the rotating plate based on the difference between the detected current display position and the scheduled display position based on the internal time of the clock. It is characterized by doing.

Further, in order to solve the above-mentioned problems and achieve the object, the analog electronic timepiece in the present embodiment has a dial having a small window and the lower side of the dial, and the dial is rotated from the small window. A rotating plate whose upper side is partially exposed, a clock-side communication unit capable of transmitting and receiving information to and from the outside, a drive mechanism unit for rotating the rotating plate, and at least the time inside the clock, and inside the clock. A clock-side control unit that controls the rotational drive of the rotating plate by the driving mechanism unit based on the time is provided, and the rotating plate identifies either the calendar or the time measured at a position exposed from the small window. A plurality of characters in a series of character groups are formed in the circumferential direction, and a plurality of identification patterns having one relationship and different from each other are formed between the characters adjacent to each other in the circumferential direction of the character group. The clock side control unit detects based on the identification pattern detected based on the small window image including the image corresponding to the exposed portion of the small window and the rotating plate exposed from the small window. It is characterized in that the display position of the rotating plate is corrected based on the difference between the current display position of the rotating plate from the terminal device and the scheduled display position based on the time inside the clock.

In the analog electronic clock system and the analog electronic clock of the present invention, a plurality of identification patterns having one relationship and different from each other are formed between characters adjacent to each other in the circumferential direction of the character group, and are based on a small window image. Since any of the identification patterns is detected and the current display position of the rotating plate is detected based on the detected identification pattern, it is possible to reliably correct the display position of the rotating plate.

FIG. 1 is an overall configuration diagram of an analog electronic clock system according to an embodiment. FIG. 2 is a block diagram of an analog electronic clock according to an embodiment. FIG. 3 is a configuration diagram of a main part of the analog electronic clock according to the embodiment. FIG. 4 is a front view of the sheet glass in the embodiment. FIG. 5 is an explanatory diagram of the relevance of the identification pattern. FIG. 6 is a block diagram of the terminal device according to the embodiment. FIG. 7 is a sequence diagram of display position correction processing by the analog electronic clock system in the embodiment. FIG. 8 is a flow chart of display position correction processing in the terminal device. FIG. 9 is a flow chart of a display position correction process in an analog electronic clock. FIG. 10 is an explanatory diagram of detection (character detection) of the current display position based on the small window image. FIG. 11 is an explanatory diagram of detection of the current display position (identification pattern detection) based on the small window image. FIG. 12 is a diagram showing a date plate in a modified example. FIG. 13 is an explanatory diagram of the relevance of the identification pattern. FIG. 14 is a diagram showing a date plate in a modified example. FIG. 15 is a diagram showing a date plate in a modified example.

Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments. In addition, the components in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

[Embodiment]
FIG. 1 is an overall configuration diagram of an analog electronic clock system according to an embodiment. FIG. 2 is a block diagram of an analog electronic clock according to an embodiment. FIG. 3 is a configuration diagram of a main part of the analog electronic clock according to the embodiment. FIG. 4 is a front view of the sheet glass in the embodiment. FIG. 5 is an explanatory diagram of the relevance of the identification pattern. FIG. 6 is a block diagram of the terminal device according to the embodiment.

The analog electronic clock system 1 according to the embodiment includes an analog electronic clock 2 and a terminal device 3. The analog electronic clock system 1 corrects at least the display position of the analog electronic clock 2 by transmitting and receiving information to and from the analog electronic clock 2 and the terminal device 3. The case where the analog electronic clock system 1 in the present embodiment uses Bluetooth (registered trademark), which is one of the short-range wireless communication means, as the communication means between the analog electronic clock 2 and the terminal device 3 will be described. The communication means is not limited to this, and other short-range wireless communication means, a wide area communication network, or the like may be used.

The analog electronic clock 2 is a clock having an analog display unit 26 described later, and is referred to as a second hand 26b, a minute hand 26c, an hour hand 26d, and a date plate 26e (hereinafter, also simply referred to as “pointer groups 26b to 26e”) in the analog display unit 26. , The user is made to recognize the time corresponding to the positional relationship with the dial 26a. The analog electronic clock 2 has an antenna 21, a communication unit 22, a control unit 23, a power supply unit 24, a drive mechanism unit 25, an analog display unit 26, and an operation unit 27. The analog electronic clock 2 in the present embodiment will be described as a wristwatch worn by the user on the wrist, but may be a table clock or a wall clock.

The antenna 21 constitutes a part of the watch-side communication unit, and receives radio waves of the Bluetooth standard, which is one of the short-range wireless communication standards. The antenna 21 is connected to the communication unit 22.

The communication unit 22 constitutes a part of the clock side communication unit, and can transmit and receive information to and from the outside. The communication unit 22 includes a Bluetooth module 22a and a conversion unit 22b. The Bluetooth module 22a is a communication control module for performing Bluetooth communication with an external terminal device 3 via an antenna 21. The conversion unit 22b converts the serial signal into a parallel signal, or converts the parallel signal into a serial signal. The transmission information (transmission data) output from the control unit 23 and transmitted to the outside is subjected to signal processing such as serial / parallel conversion in the conversion unit 22b, and transmitted from the Bluetooth module 22a to the terminal device 3 via the antenna 21. Will be done. On the other hand, the received information (received data) received by the Bluetooth module 22a via the antenna 21 is subjected to signal processing such as serial / parallel conversion in the conversion unit 22b and output to the control unit 23.

The control unit 23 is a clock-side control unit that controls various circuits and mechanisms included in the analog electronic clock 2, and the drive mechanism unit 25 rotates the pointer groups 26b to 26e at least based on the time inside the clock. It controls. Further, the control unit 23 corrects the display position of the day plate 26e based on the difference between the acquired current display position of the day plate 26e and the scheduled display position based on the time inside the clock, which will be described later. Further, the control unit 23 stores the current position information of the pointer groups 26b to 26e and updates the current position information. The control unit 23 includes a microcontroller 23a, a motor drive circuit 23b, a non-volatile memory 23c, and an RTC (Real Time Clock) 23d.

The microcontroller 23a has a calculation unit 23e, a RAM (Random Access Memory) 23f, and a ROM (Read Only Memory) 23g. The microcontroller 23a is composed of one integrated circuit. The calculation unit 23e counts the pulses included in the clock signal output from the RTC 23d by a counter (not shown). The calculation unit 23e performs various information processing according to the program stored in the ROM 23g. The calculation unit 23e in the present embodiment executes the display position correction process. The calculation unit 23e determines the time inside the clock according to the number of counted pulses. The RAM 23f functions as a work memory of the calculation unit 23e, and information to be processed by the calculation unit 23e is written. Further, the RAM 23f stores the respective current position information based on the control operation of the pointer groups 26b to 26e in which the rotation of the pointer groups 26b to 26e is controlled by the drive mechanism unit 25 based on the time inside the clock by the control unit 23. But also.

The motor drive circuit 23b outputs drive signals for driving the step motors 25a to 25c, which will be described later, included in the drive mechanism unit 25, based on the time inside the clock determined by the calculation unit 23e.

The non-volatile memory 23c is a memory that holds information when power is not supplied to the control unit 23 by the power supply unit 24, when the analog electronic clock 2 is restarted, or the like. The non-volatile memory 23c stores reference position information of the pointer groups 26b to 26e. The reference position information in the present embodiment is information based on a preset reference position. Here, the reference position is, for example, a position where the second hand 26b, the minute hand 26c, and the hour hand 26d point to 12 o'clock on the dial 26a, and the character C1 described later from the small window 26g of the dial 26a on the day plate 26e, that is, This is the position where "1" can be visually recognized. The reference position information is initial value information regarding each display position of the pointer groups 26b to 26e at the reference time (12:00:00 am on the 1st). The non-volatile memory 23c is, for example, a flash memory, an EEPROM, or the like.

The RTC23d outputs a clock signal used for timekeeping inside the analog electronic clock 2 to the microcontroller 23a.

The power supply unit 24 is a power source for the analog electronic clock 2, and supplies electric power to each unit in the analog electronic clock 2, such as the communication unit 22, the control unit 23, and the drive mechanism unit 25. The power supply unit 24 includes a power generation circuit 24a, a battery 24b, and a power supply voltage detection circuit 24c.

The power generation circuit 24a includes a photovoltaic element arranged under the dial 26a described later of the analog display unit 26. The power generation circuit 24a generates electric power by external light such as sunlight applied to the dial 26a, and supplies the generated electric power to the battery 24b.

The battery 24b is a rechargeable and dischargeable secondary battery, such as a lithium ion battery. The battery 24b is charged with the electric power generated by the power generation circuit 24a or discharged to supply electric power to each part in the analog electronic clock 2 by a battery management circuit (not shown) that manages charging and discharging.

The power supply voltage detection circuit 24c is a circuit for measuring the voltage of the battery 24b. The signal indicating the measured voltage is output to the microcontroller 23a.

The drive mechanism unit 25 includes a plurality of step motors 25a, 25b, 25c that are rotationally driven (for example, 180 degrees for each control pulse) according to a drive signal output from the motor drive circuit 23b, and a train wheel (not shown). Have. The drive mechanism unit 25 rotates the pointer groups 26b to 26e for each preset rotation amount by transmitting the rotational force of each step motor 25a to 25c by the train wheel. In the present embodiment, the second hand 26b is rotated by the step motor 25a, the minute hand 26c and the hour hand 26d are rotated by the step motor 25b, and the date plate 26e is rotated by the step motor 25c. Here, the minute hand 26c and the hour hand 26d rotate in conjunction with each other, and the hour hand 26d rotates in conjunction with the rotation speed of the minute hand 26c at a ratio of 1/12. The step motors 25a to 25c rotate 6 degrees with respect to the second hand 26b, 1 degree with respect to the minute hand 26c, and 360 / (31 × 170) degrees with respect to the day plate 26e as one rotation amount.

The analog display unit 26 is arranged at a position visible from the outside in the analog electronic clock 2. As shown in FIG. 3, the analog display unit 26 has a dial 26a, a second hand 26b, a minute hand 26c, an hour hand 26d, and a day plate 26e. The dial 26a is formed in a disk shape and transmits external light. The dial 26a is formed with an index 26f and a small window 26g. The index 26f causes the user to recognize the current time by the relative positions of the second hand 26b, the minute hand 26c, and the hour hand 26d (hereinafter, also simply referred to as “3 hands 26b to 26d”). The indexes 26f are formed at equal intervals in the circumferential direction with respect to the dial 26a. The indexes 26f in the present embodiment include those formed at equal intervals every 6 degrees and those formed at equal intervals every 30 degrees. The small window 26g is formed at a position facing the sun plate 26e in the vertical direction of the dial 26a, and penetrates the dial 26a vertically. The small window 26g in the present embodiment has a rectangular shape and is formed at the "3 o'clock" position on the dial 26a. The three hands 26b to 26d are rotatably supported by a frame (not shown) and rotate coaxially on the upper side of the dial 26a, for example, at the center of the dial 26a. The three hands 26b to 26d indicate the "second" of the current time, the minute hand 26c indicates the "minute" of the current time, and the hour hand 26d indicates the current time, depending on the relative position of the three hands 26b to 26d with respect to the index 26f on the dial 26a. Of these, it refers to "time." The three hands 26b to 26d in the present embodiment are formed so that the minute hand 26c, the second hand 26b, and the hour hand 26d have a shorter length from the center of the dial 26a in the radial direction of rotation.

The date plate 26e is a rotating plate, which is rotatably supported by a frame (not shown) and rotates under the dial 26a. A part of the sun plate 26e is exposed on the upper side of the dial 26a by the small window 26g. On the day plate 26e, a plurality of characters of a series of characters for identifying the calendar are formed at equal intervals in the circumferential direction. As shown in FIG. 4, the day plate 26e in the present embodiment has characters C1 to C31 corresponding to the numbers 1 to 31 in the circumferential direction as a series of character group CG for identifying the "day" in the calendar. Each is formed at intervals. The shape of the character group CG is not limited as long as it is a series of character groups in which the user identifies the "day" in the calendar, and any of ordinary numbers, Arabic numerals, Roman numerals, Chinese numerals, etc. It may be.

On the day plate 26e, identification patterns ID1 to ID31 are formed between the characters C1 to C31 adjacent to each other in the circumferential direction of the character group CG. The identification patterns ID1 to ID31 have one relationship and are different from each other, that is, have different shapes. As shown in FIG. 5, the identification patterns ID1 to ID31 in the present embodiment are composed of five binary marks M1 to M5 as one association. By setting each of the binary marks M1 to M5 to either white or black, 5 bits, that is, 32 different shape patterns can be formed. The identification patterns ID1 to ID31 are formed by using 31 different shape patterns out of 32 different shape patterns. Therefore, for example, the identification pattern ID 31 formed between the letters C31 and the letters C1 on the sheet 26e is located between the "31st" and the "1st" on the sheet 26e, or the day. It means that the board 26e still points to "31st". The binary marks M1 to M5 corresponding to the identification patterns ID1 to ID31 are formed on the date plate 26e so that the arrangement direction is parallel to the radius of gyration direction. The identification patterns ID1 to ID31 include a pair of tilting marks ME on both sides of the binary marks M1 to M5, that is, at both ends in the radius of gyration direction. A pair of tilting mark MEs corresponding to the identification patterns ID1 to ID31 are formed on the date plate 26e so that the facing direction is parallel to the turning radius direction.

The operation unit 27 is, for example, a crown, an operation button, or the like. When the user operates the operation unit 27, the operation content corresponding to the input operation is output to the control unit 23. Here, the control unit 23 executes various processes according to the operation content.

The terminal device 3 is separate from the analog electronic clock 2, and a display position correction application (hereinafter, also simply referred to as “application”) corresponding to the display position correction function of the analog electronic clock system 1 is used in the initial stage of the terminal device 3. It is stored in the storage unit 37 from the time (factory default), or is stored in the storage unit 37 by being downloaded from an external server or read from a connected recording medium. The terminal device 3 in the present embodiment has a function as an analog electronic clock system 1 as a part of the function, and has other functions such as a telephone function and an Internet connection function, such as a smartphone and a tablet. Although it is a mobile terminal, it is not limited to this, and may be a personal computer such as a laptop computer. As shown in FIGS. 1 and 6, the terminal device 3 includes an imaging unit 31, a touch panel unit 32, an antenna 33, a communication unit 34, a control unit 35, a power supply unit 36, and a storage unit 37. It is configured to include a clock unit 38 and an audio input / output unit 39. The terminal device 3 may be provided with, for example, a vibration generating unit or the like, depending on the required function.

The image pickup unit 31 captures at least the small window 26g on the dial 26a of the analog electronic clock 2, and as shown in FIG. 3, the exposed portion of the small window 26g and the date plate 26e exposed from the small window 26g. It generates a small window image P including a corresponding image. As shown in FIG. 1, the imaging unit 31 is arranged on the back surface of the terminal device 3 (the surface of the touch panel unit 32 opposite to the surface on which the display surface 32a described later is provided). As shown in FIG. 6, the image pickup unit 31 has an image pickup sensor 31a such as a CCD image sensor or a CMOS image sensor in which image pickup elements driven by electric power from the power supply unit 36 are arranged in a plane. The image pickup sensor 31a generates a small window image P based on an output value corresponding to the incident light for each exposure, and outputs the image signal to the control unit 35. The image pickup unit 31 drives and controls each image pickup element based on the image pickup conditions of the image pickup sensor 31a, that is, the exposure timing, the exposure time, and the like. Here, the small window image P includes an image corresponding to the small window 26g and an image corresponding to the exposed portion of the sun plate 26e exposed from the small window 26g. Here, since the day plate 26e rotates much slower per unit time than the three hands 26b to 26d, the imaging unit 31 does not stop the rotation of the pointer groups 26b to 26e, that is, the analog electronic clock 2 A small window image P is generated in a state where the current time is displayed.

The touch panel unit 32 is a display that functions as a display unit and an input unit. The touch panel unit 32 has a display surface 32a as a function of the display unit, and displays the small window image P captured by the image pickup unit 31 on the display surface 32a. The touch panel unit 32 is arranged on the surface of the terminal device 3 and is a display such as a liquid crystal display or an organic EL display driven by electric power from the power supply unit 36. The touch panel unit 32 displays the small window image P, which is an image captured by the imaging unit 31, based on the image data signal output from the control unit 35. As a function as an input unit, the touch panel unit 32 outputs an operation input signal to the operation input position to the control unit 35 when the user presses an arbitrary position.

The antenna 33 constitutes a part of the terminal-side communication unit, and receives at least a Bluetooth standard radio wave. The antenna 33 is connected to the communication unit 34.

The communication unit 34 constitutes a part of the terminal-side communication unit, and can transmit and receive time information relating to at least the time to the outside. Similar to the communication unit 22, the communication unit 34 in the present embodiment has a Bluetooth module (not shown) and a conversion unit for performing Bluetooth communication with at least an external analog electronic clock 2 via the antenna 33. The transmission information (transmission data) output from the control unit 35, for example, the current display position information of the date plate 26e, is signal-processed by the conversion unit and transmitted from the Bluetooth module to the analog electronic clock 2 via the antenna 33. .. On the other hand, the received information (received data) received by the Bluetooth module via the antenna 33, for example, the display position correction completion notification, is signal-processed by the conversion unit and output to the control unit 35. Further, the communication unit 34 can transmit and receive information by wireless communication with base stations installed in various places.

The control unit 35 is a terminal-side control unit and controls the devices constituting the terminal device 3 including the image pickup unit 31. The control unit 35 realizes the image capture of the small window 26 g of the analog electronic clock 2 by executing the above application. Further, the control unit 35 detects the characters C1 to C31 or the identification patterns ID1 to ID31 by performing image processing on the small window image P generated by the imaging unit 31. Here, the hardware configuration of the control unit 35 is the same as the hardware configuration of the control unit of a well-known terminal device, and includes, for example, a calculation unit, RAM, and ROM (not shown).

The power supply unit 36 is a power source for the terminal device 3, and is an image pickup unit 31, a touch panel unit 32, a communication unit 34, a control unit 35, a storage unit 37, a built-in clock unit 38, and an audio input / output unit 39. Etc., power is supplied to various devices constituting the terminal device 3. The power supply unit 36 has at least a rechargeable and dischargeable battery.

The storage unit 37 stores various programs including a program corresponding to the display position correction application executed by the control unit 35, initial setting information, and the like. The storage unit 37 is, for example, a flash memory, EEPROM, or the like.

The built-in clock unit 38 is a counter that clocks and holds the time inside the terminal. In the terminal device 3, the time inside the terminal is read out by the control unit 35 and displayed on the display surface 32a of the touch panel unit 32. Further, in the terminal device 3, various operations are performed by comparing the internal time of the terminal with the set time by the control unit 35. The time inside the terminal is updated by the control unit 35 at any time based on the time information on the base station side acquired from the base station when the communication unit 34 is communicating with the terminal device 3 and the base station. ..

The voice input / output unit 39 mainly transmits information between the user and the terminal device 3 via voice. The audio input / output unit 39 has a microphone 39a and a speaker 39b. The microphone 39a mainly inputs a user's voice, converts sound waves into a voice signal, and outputs the sound wave to a control unit 35 or the like. The speaker 39b mainly outputs voice to the user, converts the voice signal output from the control unit 35 or the like into sound waves, and outputs the voice signal to the outside of the terminal device 3.

Next, the display position correction by the analog electronic clock system 1 in the present embodiment will be described. FIG. 7 is a sequence diagram of display position correction processing by the analog electronic clock system in the embodiment. FIG. 8 is a flow chart of display position correction processing in the terminal device. FIG. 9 is a flow chart of a display position correction process in an analog electronic clock. FIG. 10 is an explanatory diagram of detection (character detection) of the current display position based on the small window image. FIG. 11 is an explanatory diagram of detection of the current display position (identification pattern detection) based on the small window image. Note that X in FIGS. 10 and 11 is the center of rotation of the date plate.

First, as shown in FIG. 7, the user activates the display position correction application on the terminal device 3. Here, to start the application, for example, the user presses the icon of the start button corresponding to the application displayed on the display surface 32a (the operation is input to the icon display position of the start button on the display surface 32a). .. Here, the communication unit 34 of the terminal device 3 in the present embodiment establishes Bulletoth communication with the communication unit 22 of the analog electronic clock 2 by activating the application.

Next, the control unit 35 of the terminal device 3 determines whether or not the application is running (step ST301), as shown in FIG.

Next, when the control unit 35 determines that the application is running (step ST301: Yes), the control unit 35 starts the imaging unit 31 (step ST302). Here, the control unit 35 activates the imaging unit 31 in order to image the small window 26g while the pointer groups 26b to 26e are rotating. When the imaging unit 31 is activated, the control unit 35 causes the display surface 32a to display an image based on the image signal output in real time from the imaging unit 31. That is, by visually recognizing the display surface 32a, the user can confirm the subject to be imaged by the imaging unit 31, that is, the small window 26g. Further, the control unit 35 displays a shutter instructing the image pickup by the image pickup unit 31 as an icon.

Next, the control unit 35 determines whether or not the shutter has been pressed (step ST303).

Next, when the control unit 35 determines that the shutter has been pressed (step ST303: Yes), the control unit 35 generates a small window image P (step ST304). Here, when the shutter icon displayed on the display surface 32a is pressed by the user, the control unit 35 outputs an image pickup instruction signal instructing the image pickup by the image pickup unit 31 to the image pickup unit 31, and the image pickup unit 31 takes an image. Is performed, and a small window image P is generated. Further, when the control unit 35 determines that the shutter is not pressed (step ST303: No), the control unit 35 repeats step ST305 until the shutter is pressed.

Next, the control unit 35 determines whether or not any of the characters C1 to C31 of the character group CG could be detected from the small window image P (step ST305). The control unit 35 in the present embodiment detects any of the characters C1 to C31 from the small window image P by performing pattern matching processing as image processing. Here, the pattern matching process is performed by comparing the values such as brightness, saturation, lightness, and hue of each pixel in the small window image P and extracting the geometric shape information. For example, as shown in FIG. 10, the control unit 35 completely matches the shapes (contour shapes) of the identification patterns ID1 to ID31 stored in the storage unit 37 in advance and the shapes detected in the small window image P ( Any of the letters C1 to C31 can be detected when all of the letters C1 to C31 are exposed in the small window 26g (including the equivalent of an exact match in which a part of the shape is not continuous). ..

Next, as shown in FIG. 8, the control unit 35 determines that any of the characters C1 to C31 could be detected (step ST305: Yes), and generates the current display position information (step ST306). Here, the control unit 35 detects the current display position of the date plate 26e based on the detected characters and generates the current display position information. The control unit 35 in the present embodiment calculates the current position of the sun plate 26e with respect to the reference position (for example, the rotation angle of the current sun plate 26e with respect to the reference position) based on the detected characters C1 to C31 to display the current position. Generate location information.

Next, the control unit 35 transmits the current display position information to the analog electronic clock 2 (step ST307). At present, the pointer groups 26b to 26e of the analog electronic clock 2 are in a rotating state, but the control unit 35 rotates the day plate 26e further by the drive mechanism unit 25 in addition to the rotation of the day plate 26e according to the time inside the clock. The current display position information of the date plate 26e is output to the control unit 23 via the communication units 34 and 22 so as to be able to do so.

Next, as shown in FIG. 9, the control unit 23 determines whether or not the current display position information has been received (step ST201).

Next, when the control unit 23 determines that the current display position information has been received (step ST201: Yes), the control unit 23 corrects the display position of the date plate 26e based on the current display position information (step ST202). Here, the control unit 23 is a motor for each step motor 25a to 25c of the drive mechanism unit 25 based on the day difference information which is the difference between the current display position information and the scheduled display position based on the time inside the clock. The drive circuit 23b outputs a drive signal. Therefore, the date plate 26e rotates from the current display position to the correction display position based on the day difference information. The current position information becomes position information corresponding to the correction display position from the current display position, and is stored in the RAM 23f. Further, when the control unit 23 determines that the current display position information is not received (step ST201: No), the control unit 23 repeats step ST201 until the current display position information is received.

Next, the control unit 23 transmits a display position correction completion notification to the terminal device 3 (step ST203). At present, since the display position correction of the date plate 26e of the analog electronic clock 2 has been completed, the control unit 23 displays a display that triggers the termination of the application via the communication units 22 and 34 so that the application can be terminated. The position correction completion notification is output to the control unit 35.

Next, as shown in FIG. 8, the control unit 35 determines whether or not the display position correction completion notification has been received (step ST308).

Next, when the control unit 35 determines that the display position correction completion notification has been received (step ST308: Yes), the control unit 35 terminates the application (step ST309). Here, when the control unit 35 receives the display position correction completion notification, for example, the control unit 35 displays a warning display on the display surface 32a to make the user recognize that the display position correction is completed, and then terminates the application. Further, when the control unit 35 determines that the display position correction completion notification has not been received (step ST308: No), the control unit 35 repeats step ST308 until the display position correction completion notification is received. Further, the control unit 35 displays a caution display image on the display surface 32a to make the user recognize that the communication with the analog electronic clock 2 is interrupted when the display position correction completion notification is not received for a certain period of time. After that, the application may be terminated (step ST309). Further, when the communication with the analog electronic clock 2 is interrupted, the battery capacity of the analog electronic clock 2 is low, and the rotation of the pointer groups 26b to 26e may be stopped. The communication with the analog electronic clock 2 may be interrupted, and a caution display image prompting the user to charge the analog electronic clock 2 may be displayed together with the display surface 32a.

Further, when the control unit 35 determines that any of the characters C1 to C31 cannot be detected (step ST305: No), whether or not any of the identification patterns ID1 to ID31 can be detected from the small window image P. Is determined (step ST310). In the control unit 35 in the present embodiment, for example, as shown in FIG. 11, the shapes of the identification patterns ID1 to ID31 stored in advance in the storage unit 37 and the shapes detected in the small window image P completely match ( Any of ID1 to ID31 can be detected when all of ID1 to ID31 are exposed in the small window 26g (including the equivalent of an exact match in which a part of the shape is not continuous).

Next, as shown in FIG. 8, the control unit 35 determines that any of the identification patterns ID1 to ID31 could be detected (step ST310: Yes), and generates the current display position information (step ST306). ). Here, the control unit 35 generates the current display position information of the date plate 26e based on the detected identification patterns ID1 to ID31. The control unit 35 in the present embodiment calculates the current position of the sun plate 26e with respect to the reference position (for example, the rotation angle of the current sun plate 26e with respect to the reference position) based on the detected identification patterns ID1 to ID31. The current display position of the day plate 26e is detected, the current display position information is generated, the current display position information is transmitted to the analog electronic clock 2 (step ST307), and the control unit 23 determines the day based on the current display position information. The display position correction of the board 26e is performed (step ST202), the display position correction completion notification is transmitted to the terminal device 3 by the control unit 23 (step ST203), and the application is terminated by the control unit 35 (step ST309). .. Further, when the control unit 35 determines that any of the identification patterns ID1 to ID31 cannot be detected (step ST310: No), the control unit 35 terminates the application (step ST309).

As described above, in the analog electronic clock system 1 of the present embodiment, a plurality of identification patterns ID1 to ID31 having one relationship and different from each other are formed between the characters C1 to C31 adjacent to each other in the circumferential direction of the character group CG. Each of them is formed, and the control unit 35 detects any of the identification patterns ID1 to ID31 based on the small window image P, and detects the current display position of the date plate 26e based on the detected identification patterns ID1 to ID31. Compared with the case where the identification patterns ID1 to ID31 are not formed on the date plate 26e, even if any of the characters C1 to C31 cannot be detected, which character and which character among the adjacent characters C1 to C31 It is possible to grasp whether the space is exposed from the small window 26g to the upper side of the dial 26a. If the display position correction of the date plate 26e cannot be performed without detecting any of the characters C1 to C31, the control unit 35 determines that any of the characters C1 to C31 cannot be detected, and the display position correction is performed. I can't do it. Alternatively, the control unit 23 rotates the date plate 26e to a display position where any of the characters C1 to C31 can be exposed from the small window 26g, and after the rotation, the image pickup unit 31 takes an image. Therefore, the time required for the display position correction. Becomes longer. On the other hand, even if the analog electronic clock system 1 determines that any of the characters C1 to C31 cannot be detected by the control unit 35, it can detect any of the identification patterns ID1 to ID31, so that the date plate 26e can be surely detected. The display position correction of the above can be performed, and it is possible to suppress the time required for the display position correction from becoming long.

Further, since the day plate 26e in the analog electronic clock system 1 rotates much slower per unit time than the three hands 26b to 26d, the pointer groups 26b to 26e are not stopped, that is, the analog electronic clock 2 Can correct the display position of the date plate 26e while the current time is displayed. Therefore, the analog electronic clock system 1 does not have to stop the rotation of the pointer groups 26b to 26e in order to correct the display position of the day plate 26e, which is disadvantageous to the user in the display position correction of the day plate 26e. It can be suppressed.

Further, the analog electronic clock system 1 is identified when the control unit 35 first detects the characters C1 to C31 for the small window image P and cannot detect any of the characters C1 to C31. Any of the patterns ID1 to ID31 is detected. Here, the characters C1 to C31 have a large shape feature as compared with the identification patterns ID1 to ID31, and are easier to detect than the identification patterns ID1 to ID31 in image processing. Therefore, since the analog electronic clock system 1 detects any of the characters C1 to C31 having high detection accuracy first, it is possible to further suppress the time required for the display position correction from becoming long. In the analog electronic clock system 1, the control unit 35 first detects the identification patterns ID1 to ID31 for the small window image P, and when any of the identification patterns ID1 to ID31 cannot be detected, Any of the characters C1 to C31 may be detected.

Further, in the analog electronic clock system 1, the identification patterns ID1 to ID31 formed on the date plate 26e, which is a rotating plate, are five binary marks M1 to M5. Therefore, the control unit 35 can easily determine which of the identification patterns ID1 to ID31 the detected identification pattern is by determining the binary value of the image corresponding to the binary marks M1 to M5 in the image processing. Can be grasped. As a result, the analog electronic clock system 1 can suppress a long detection time (image processing time) when detecting any of the identification patterns ID1 to ID31, so that the time required for the display position correction becomes long. It can be further suppressed.

The analog electronic clock system 1 in the above embodiment may consider the inclination of the identification patterns ID1 to ID31 when generating the current display position of the date plate 26e based on the identification patterns ID1 to ID31. In the analog electronic clock system 1 in the modified example, when the control unit 35 detects the identification patterns ID1 to ID31 and the current display position is detected based on the identification patterns ID1 to ID31, the small window 26g is shown in FIG. And the rotation position of the date plate 26e may be detected based on the angle θ between the identification patterns ID1 to ID31. Here, the control unit 35 detects the small window 26g in the small window image P. The small window 26g is formed by a pair of long sides that are usually rectangular and extend toward the center of rotation X and a pair of short sides that are orthogonal to the long sides. Therefore, the control unit 35 in the modified example has the shape (contour shape) of the small window 26g stored in the storage unit 37 in advance by performing the pattern matching process in the small window image P, and the small window image P. The small window 26g can be detected when the shape corresponding to the detected small window 26g is completely matched (including the perfect matching equivalent in which a part of the shape is not continuous). On the other hand, in any of the detected identification patterns ID1 to ID31, a pair of tilting mark MEs are formed with the five binary marks M1 to M5 sandwiched between them, and the pair of tilting mark MEs are connected to form a rotation center. The rotation position of the sun plate 26e is detected based on the angle θ formed by the virtual line K2 extending to X and the virtual line K1 extending from the long side of the detected small window 26g to the rotation center X, and the rotation of the sun plate 26e is performed. Generates the current display position information based on the position. Since the relative position of the small window 26g with respect to the dial 26a is fixed, it is possible to grasp the inclination of the identification patterns ID1 to ID31 detected by the control unit 35 with respect to the dial 26a, that is, the rotation angle of the date plate 26e. it can. Therefore, the analog electronic clock system 1 can improve the detection accuracy of the current display position detected by the control unit 35, so that the accuracy of the display position correction can be improved.

The five binary marks M1 to M5 constituting the identification patterns ID1 to ID31 in the analog electronic clock system 1 in the embodiment may use the design of the date plate 26 visually recognized by the user. FIG. 12 is a diagram showing a date plate in a modified example. As shown in FIG. 12, the date plate 26e of the analog electronic clock system 1 in the modified example has a pattern D formed on the surface on which the letters C1 to C31 are formed. The pattern D in the modified example is formed by a plurality of intersecting straight lines, and as a result, a plurality of polygons such as a rhombus are rotated as one unit of the pattern D except for the portion where the letters C1 to C31 are formed. It is formed by being continuously arranged in the radial direction and the circumferential direction. In the identification patterns ID1 to ID31 in the modified example, one unit of the pattern D, that is, a polygon is used as one binary mark, and five polygons arranged in the radius of gyration are used as binary marks M1 to M5. Therefore, since the analog electronic clock system 1 in the modified example uses a part of the pattern as the identification patterns ID1 to ID31, it is possible to suppress the deterioration of the design of the analog display unit 26 due to the identification patterns ID1 to ID31. ..

Further, in the analog electronic clock system 1 in the above embodiment, the case where the date plate 26e is used as the rotating plate has been described, but the present invention is not limited to this. Since it is sufficient for the rotating plate to have a plurality of characters of a series of characters for identifying the calendar formed in the circumferential direction, a series of characters related to the "month" and a series of characters related to the "year" are formed. It may be a year board on which a character group is formed, or a day board on which a series of character groups related to "day of the week" is formed. Further, the analog electronic clock 2 may have two or more rotating plates in which a series of different character groups for identifying the calendar are formed. Further, since the rotating plate may be formed with a plurality of characters of a series of characters for identifying the time measurement in the circumferential direction, the hour plate and the "minute" are formed with a series of characters related to "hours". It may be a minute plate on which a series of characters related to "seconds" is formed, or a second plate on which a series of characters related to "seconds" is formed. Further, the analog electronic clock 2 may have two or more rotating plates in which a series of different character groups for identifying the clock time are formed. Further, the analog electronic clock 2 has one or more rotating plates on which a series of different character groups for identifying the calendar are formed and a rotating plate on which a series of different character groups for identifying the clock time are formed. You may. Further, the analog electronic clock 2 may have a rotating plate in which a series of character groups having a relationship other than the calendar and the clock time are formed in addition to the rotating plate. For example, a rotating plate on which a character group of "city" is formed, a rotating plate on which a character group of "mode state of analog electronic clock 2" is formed, and the like. Even in such a rotating plate, the current display position of such a rotating plate is detected by detecting the identification pattern by the control unit 35 by forming an identification pattern between adjacent characters. It is possible to correct the display position.

Further, in the analog electronic clock system 1 of the embodiment, the five binary marks M1 to M5 are used as identification patterns, but the present invention is not limited to this. FIG. 13 is a front view of the date plate in the modified example. FIG. 14 is an explanatory diagram of the relevance of the identification pattern. FIG. 15 is a diagram showing a date plate in a modified example. As shown in FIG. 13, the date plate 26e of the analog electronic clock system 1 in the modified example has one relationship different from the five binary marks M1 to M5, and a plurality of identification patterns ID1 to ID31 different from each other are formed. It may have been. As shown in FIG. 14, the identification patterns ID1 to ID31 in the modified example may be composed of symbols corresponding to the ones digit and the tens digit of the characters C1 to C31 as one association. .. In this case, the symbols are associated with the numbers "0" to "9". For example, the number "0" is a white circle, the number "1" is one vertical line, the number "2" is two horizontal lines, the number "3" is a white triangle, and the number "4". White square, number "5" is white diamond, number "6" is inverted white triangle, number "7" is black triangle, number "8" is black square, number "9" If there is, make it a black diamond. The identification patterns ID1 to ID31 are formed by using symbols associated with the numbers "0" to "9", respectively. Therefore, for example, the identification pattern C31 formed between the characters C31 and the character C1 of the date plate 26e has a white triangle as the tens digit and one vertical line as the ones digit. Further, as shown in FIG. 15, the identification patterns ID1 to ID31 in the modified example may be icons that prompt the user to operate the terminal device 3 when visually recognized by the user. For example, the identification patterns ID1 to ID31 may be used as icons related to a camera that the user wants to capture by the imaging unit 31, and different identification patterns ID1 to ID31 are configured depending on the color, shape, number, and the like of the icons. Further, the identification patterns ID1 to ID31 in the modified example may have a shape continuous with the characters C1 to C31. In this case, the identification patterns ID1 to ID31 formed between the adjacent characters C1 to C31 are formed so that the continuity between the adjacent characters C1 to C31 is visible to the user, and the identification patterns ID1 to ID31 are formed. May be formed into different shapes. As a result, it is possible to prevent the identification patterns ID1 to ID31 from deteriorating the design of the analog display unit 26.

Further, since the identification patterns ID1 to ID31 may be any one that can be detected in the small window image P by the control unit 35, the characteristics of the imaging unit 31 may be taken into consideration. For example, if the imaging unit 31 can expose light in a region other than the visible light region, for example, an infrared region or an ultraviolet region, the identification patterns ID1 to ID31 are formed of a paint that reacts with infrared rays and ultraviolet rays. You may. In this case, even if the identification patterns ID1 to ID31 are exposed on the upper side of the dial 26a from the small window 26g, the user cannot recognize them. Therefore, it is possible to suppress the deterioration of the design of the analog electronic clock 2 as compared with the case where the exposed identification patterns ID1 to ID31 can be recognized. Further, the identification patterns ID1 to ID31 are formed of fluorescent paint or the like, and the small window 26g is imaged in a dark place by the imaging unit 31, so that the control unit 35 detects the identification patterns ID1 to ID31 in the small window image P. Will be possible. Further, the identification patterns ID1 to ID31 may be formed by a reflective member having a reflectance higher than that of the date plate 26e. In this case, by imaging the small window 26g with the imaging unit 31, the difference in brightness becomes clear, and the detection accuracy of the identification patterns ID1 to ID31 by the control unit 35 can be improved. Further, the identification patterns ID1 to ID31 may be formed on the sheet glass 26e by using the retroreflective ink. Since retroreflective ink diffusely reflects light from the outside, its visibility is low under the outside light, and the directional light from the light source reflects the light toward the light source. Visibility is improved. Therefore, when the terminal device 3 has a light source, the brightness difference is clear due to the light from the light source reflected in the identification patterns ID1 to ID31 by blinking the light source when the small window 26g is imaged by the imaging unit 31. In addition, since the visibility is low under external light, the identification patterns ID1 to ID31 suppress the deterioration of the design of the analog display unit 26, and the control unit 35 can detect the identification patterns ID1 to ID31. Can be improved.

1 Analog electronic clock system 2 Analog electronic clock 21 Antenna (clock side communication unit)
22 Communication unit (clock side communication unit)
23 Control unit (clock side control unit)
25 Drive mechanism 26 Analog display 26a Dial 26b Second hand 26c Minute hand 26d Hour hand 26e Day plate 26f Index 3 Terminal equipment 31 Imaging unit 32 Touch panel 32a Display surface 33 Antenna (terminal communication unit)
34 Communication unit (terminal communication unit)
35 Control unit (terminal side control unit)
C1 to C31 characters CG characters D pattern ID1 to ID31 Identification pattern M1 to M2 Binary mark ME Tilt mark P Small window image X Rotation center

Claims (5)

A dial with a small window and
A rotating plate that rotates the lower side of the dial and partially exposes the upper side of the dial from the small window.
A watch-side communication unit that can send and receive information to and from the outside,
The drive mechanism unit that rotates the rotating plate and
At least, a clock-side control unit having a time inside the clock and controlling the rotational drive of the rotating plate by the drive mechanism unit based on the time inside the clock.
With
In the rotating plate, at a position exposed from the small window, a plurality of characters of a series of characters for identifying one of the calendar and the clock time are formed in the circumferential direction, and have one relationship with each other. A plurality of different identification patterns are formed between the characters adjacent to each other in the circumferential direction of the character group.
With an analog electronic clock
A terminal-side communication unit that can send and receive information to and from the outside,
An imaging unit that images at least the small window and generates a small window image including an image corresponding to an exposed portion of the small window and the rotating plate exposed from the small window.
A terminal-side control unit that detects the identification pattern based on the small window image and detects the current display position of the rotating plate based on the detected identification pattern.
With terminal equipment that has
With
The analog electronic clock is
The display position of the rotating plate is corrected based on the difference between the detected current display position and the scheduled display position based on the time inside the clock.
An analog electronic clock system featuring that. In the analog electronic clock system according to claim 1.
The terminal side control unit
When the character can be detected based on the small window image, the current display position is detected based on the character.
When the character cannot be detected based on the small window image, the identification pattern is detected, and the current display position is detected based on the identification pattern.
Analog electronic clock system. In the analog electronic clock system according to claim 1 or 2.
The terminal side control unit
When detecting the current display position based on the identification pattern, the rotation position of the rotating plate is detected based on the angle between the small window and the identification pattern.
Analog electronic clock system. In the analog electronic clock system according to any one of claims 1 to 3.
The rotating plate is a date plate,
The identification pattern is an analog electronic clock system with five binary marks. A dial with a small window and
A rotating plate that rotates the lower side of the dial and partially exposes the upper side of the dial from the small window.
A watch-side communication unit that can send and receive information to and from the outside,
The drive mechanism unit that rotates the rotating plate and
At least, a clock-side control unit having a time inside the clock and controlling the rotational drive of the rotating plate by the drive mechanism unit based on the time inside the clock.
With
In the rotating plate, at a position exposed from the small window, a plurality of characters of a series of characters for identifying one of the calendar and the clock time are formed in the circumferential direction, and have one relationship with each other. A plurality of different identification patterns are formed between the characters adjacent to each other in the circumferential direction of the character group.
The clock side control unit
The present state of the rotating plate from the terminal device detected based on the identification pattern detected based on the small window image including the image corresponding to the exposed portion of the small window and the rotating plate exposed from the small window. The display position of the rotating plate is corrected based on the difference between the display position and the scheduled display position based on the time inside the clock.
An analog electronic clock that features that.

Images