JP2017075816A - Electronic watch and method of controlling display of electronic watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to immediately grasp whether time information has been successfully acquired and whether the time displayed on an electronic watch is the precise time corrected on the basis of the time information.SOLUTION: An electronic watch 1 comprises: a display part 80; a clock part 66 that clocks the time; an acquisition part 10 that acquires time information; a time correction part 68 that corrects the time clocked by the clock part 66 on the basis of the time information acquired by the acquisition part 10; and a control part 50 that causes the display part 80 to display a display image including the clocked time. The control part 50 changes the contrast or color of the display image depending on success or failure of the acquisition of the time information by the acquisition part 10.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electronic timepiece and a display control method for the electronic timepiece.

  Patent Document 1 describes a radio timepiece that receives a radio signal including time information and corrects the time (paragraph 0001). Further, the document 1 describes that when the reception of the radio signal is successful, the second hand is continuously moved, and when the reception of the radio signal fails, the second hand is switched to the step operation (paragraph 0009). .

JP 2003-4873 A

  In Patent Document 1, the second hand movement state is changed according to the success or failure of the reception of the radio signal. In order to determine whether the second hand is a continuous hand movement or a step hand movement, at least 1 to 2 seconds. You need to keep watching the second hand movement. For this reason, the user could not immediately grasp the success or failure of the reception of the radio signal or whether or not the display time of the radio clock is an accurate time corrected based on the time information included in the radio signal. .

  The present invention has been made in view of the above-described circumstances, and the user can immediately determine whether or not the time information has been successfully acquired and whether or not the display time of the electronic timepiece has been corrected based on the time information. The purpose is to be able to grasp.

  In order to solve the above-described problems, an electronic timepiece according to the invention includes a display unit, a time measuring unit that measures time, an acquisition unit that acquires time information, and the time information acquired by the acquisition unit. A time correction unit that corrects the time measured by the time measurement unit, and a control unit that causes the display unit to display a display image including the time measurement time, and the control unit succeeds in acquiring the time information. The contrast or color of the display image is changed depending on whether or not it has failed.

  According to this configuration, the display image including the timekeeping time is displayed on the display unit. The contrast or color of the display image displayed on the display unit is changed depending on whether acquisition of time information is successful or failure. Therefore, the user can see the display image at a glance, and based on the contrast or color of the display image, the success or failure of acquisition of the time information and the accurate time when the display time of the electronic timepiece is corrected based on the time information It is possible to immediately grasp whether or not.

  In the electronic timepiece described above, the control unit may be configured to change the overall contrast or color of the display image depending on whether the acquisition unit succeeds in acquiring the time information or fails. Good. In this case, since the contrast and the color of the entire display image are changed, it is possible to grasp the success or failure of acquisition of time information and whether or not the display time of the electronic clock is an accurate time corrected based on the time information. Can be made easier. Further, since the contrast and color of the entire display image may be changed, control for changing the contrast and color is easy.

  Further, in the electronic timepiece described above, the display image includes a background image, and the control unit includes the background of the display image when the acquisition unit succeeds in acquiring the time information and when the acquisition fails. It may be configured to change the contrast or color of the image. Even if the background image contrast and color are changed in this way, the user can determine whether or not the time information has been successfully acquired and whether or not the display time of the electronic timepiece has been corrected based on the time information. Can be grasped. In addition, since the contrast and color are not changed for the portion of the display image that indicates the time measurement time, the time display does not become difficult to see.

  Further, in the electronic timepiece described above, the control unit changes a contrast or a color of a portion indicating the timekeeping time in the display image depending on whether the acquisition unit succeeds in acquiring the time information or fails. It may be configured to. The user looks at the electronic timepiece to grasp the time. Therefore, even if it is a part of the display image, the portion of the timekeeping time is the portion most watched by the user, so even if it is configured to change the contrast and color of this portion, the success or failure of the acquisition of time information, It is possible to make the user grasp whether or not the display time of the electronic timepiece is an accurate time corrected based on the time information.

  In the electronic timepiece described above, when the time information acquisition fails, the control unit changes the contrast or color of the display image to a contrast or color different from that when the time information acquisition is successful. When the time information is successfully acquired after the change, the contrast or color of the display image may be returned to the contrast or color when the time information is successfully acquired. Even if acquisition of the time information fails in this way, the contrast and color of the display image are returned to the contrast and color when the acquisition of the time information is successful after the acquisition of the time information succeeds. Also good.

  In the electronic timepiece described above, an operation unit is provided, and the control unit has a contrast or color of the display image that is different from a case where acquisition of the time information is successful when acquisition of the time information fails. Alternatively, the color may be changed, and after the change, according to the operation of the operation unit, the contrast or color of the display image may be changed to the contrast or color when the acquisition of the time information is successful. Good. In this case, the user can forcibly change the contrast and color of the display image to the contrast and color when the time information is successfully acquired by operating the operation unit even in a situation where the time information cannot be acquired. Can do.

  In the electronic timepiece described above, the control unit may change the contrast or color of the display image after a predetermined time has elapsed after changing the contrast or color of the display image according to the operation of the operation unit. It may be configured to return to contrast or color when acquisition of time information fails. In this case, even if the user operates the operation unit to forcibly change the contrast or color of the display image, when the predetermined time has elapsed, the contrast or color of the display image has failed to acquire time information. Since the display returns to the contrast and color, the user can be made to know again that the acquisition of time information has failed and that the display time of the electronic timepiece is not an accurate time corrected based on the time information.

  In the electronic timepiece described above, the control unit succeeds in obtaining the time information of the contrast or color of the display image after changing the contrast or color of the display image according to the operation of the operation unit. The configuration may be such that the contrast or color is gradually returned from the contrast or color when the acquisition of the time information fails. The contrast and color of the display image that are forcibly changed in accordance with the operation of the operation unit in this way are changed from the contrast and color when the time information acquisition succeeds to the contrast and color when the time information acquisition fails. You may make it return gradually.

  Further, the display control method for an electronic timepiece according to the present invention is a display control method for an electronic timepiece that acquires time information and corrects the timekeeping time, and when the time information acquisition is successful, the acquired time The timekeeping time is corrected based on the information, the display image including the timekeeping time is displayed on the display unit, and if the acquisition of the time information fails, the timekeeping time is included without correcting the timekeeping time. The display image is displayed on the display unit with a contrast or color changed from that when the time information is successfully acquired. According to the present invention, the same operational effects as those of the electronic timepiece described above can be obtained.

It is a top view which shows the external appearance structure of the electronic timepiece which concerns on 1st Embodiment. It is a block diagram which shows the internal structure of an electronic timepiece. It is a flowchart of a time correction process. It is a figure which shows an example of the display image when reception of time information is successful. It is a figure which shows an example of the display image when reception of time information fails. It is a flowchart of the contrast change process which concerns on 2nd Embodiment. It is a figure which shows the modification of a display image when reception of time information fails, and is a case where the contrast of a background image is changed. It is a figure which shows the modification of a display image when reception of time information fails, and is a case where the contrast of a time image is changed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is a plan view showing an external configuration of an electronic timepiece 1 according to the first embodiment.
An electronic timepiece 1 shown in FIG. 1 is a wristwatch-type radio timepiece having a function of receiving a standard radio wave and correcting a timekeeping time. The electronic timepiece 1 includes an exterior case 5 formed of a conductive material such as metal or a nonconductive material such as ceramic. A rectangular opening 5A is formed on the front surface of the outer case 5, and a display unit 80 is provided inside the opening 5A. On the display unit 80, a background image is displayed as the display image 100 together with the time measured by the electronic timepiece 1. Operation buttons 6 </ b> A and 6 </ b> B, which are examples of an operation unit, are provided on the side surface of the outer case 5 in the horizontal direction in the drawing. The user can change the operation mode of the electronic timepiece 1 by operating the operation buttons 6A and 6B. A belt 8 is attached to the side surface of the exterior case 5 in the vertical direction in the figure via a belt attachment portion 7. The belt 8 attaches the electronic timepiece 1 to the user's wrist. In FIG. 1, illustration of a part of the belt 8 is omitted.

FIG. 2 is a block diagram showing an internal configuration of the electronic timepiece 1.
The electronic timepiece 1 includes operation buttons 6A and 6B, a receiving unit 10, an antenna 12, an oscillation circuit 20, a frequency dividing circuit 30, a power supply unit 40, and a control unit 50 (a main control unit 60 and a display control unit 70). ) And a display unit 80. The operation buttons 6A and 6B output an operation signal to the main control unit 60. The receiving unit 10 is an example of an acquiring unit that acquires time information, and receives a standard radio wave via the antenna 12 under the control of the main control unit 60. In addition, the receiving unit 10 demodulates and decodes the received standard radio wave and outputs time information and the like included in the standard radio wave to the main control unit 60.

  The oscillation circuit 20 includes a crystal resonator and outputs a pulse signal of, for example, 32768 KHz. The frequency dividing circuit 30 divides the pulse signal output from the oscillation circuit 20 and outputs a reference clock signal of 1 Hz, for example. The power supply unit 40 includes, for example, a primary battery, and supplies driving power to each unit of the electronic timepiece 1 under the control of the main control unit 60. The power supply unit 40 may include a secondary battery instead of the primary battery. In this case, the electronic timepiece 1 may further include a solar panel, and the secondary battery may be charged with electric power generated by the solar panel.

  The control unit 50 includes a main control unit 60 that controls the entire electronic timepiece 1 and a display control unit 70 that controls the display unit 80. The main control unit 60 includes a ROM 62 (Read Only Memory), a RAM 64 (Random Access Memory), a clock unit 66, and a time correction unit 68. The ROM 62 is a rewritable flash ROM, for example, and stores a program executed by the main control unit 60. The program stored in the ROM 62 includes, for example, a time correction processing program to be described later. The RAM 64 is used as a work area for the main control unit 60.

  The time measuring unit 66 counts the reference clock signal output from the frequency dividing circuit 30, and measures the time including, for example, year, month, day, hour, minute, and second. The time correcting unit 68 corrects the time measured by the time measuring unit 66 based on the time information included in the standard radio wave received by the receiving unit 10. FIG. 2 illustrates the configuration in which the timer unit 66 is provided inside the main controller 60, but the timer unit 66 may be provided outside the main controller 60 and the controller 50. The same applies to the time correction unit 68. Although not shown, a time counter that stores a count value indicating the time is provided in the time measuring unit 66.

  The display control unit 70 includes a ROM 72 and a VRAM (Video RAM) 74. The ROM 72 is a rewritable flash ROM, for example, and stores image data such as numbers and symbols for time display, image data of a background image, and the like in addition to a program executed by the display control unit 70. In the VRAM 74, image data for one screen to be displayed on the display unit 80 is written. The display control unit 70 controls the display unit 80 based on an instruction from the main control unit 60 and displays the display image 100 including the time measurement time.

  For example, the display control unit 70 generates the display image 100 using a two-layer structure. Of the two layers, if the first layer located at the front is defined as the time display layer and the second layer located at the rear is defined as the background image layer, numbers and symbols indicating the time are displayed. The image becomes a first layer image, and the background image becomes a second layer image. The display control unit 70 can individually edit the image for each layer, and the first layer image and the second layer image are overlapped and drawn on the VRAM 74 to draw one screen. A display image 100 is generated.

  The display unit 80 is an active matrix type EPD (Electrophoretic Display) panel, for example, and can display various images such as letters, numbers, patterns, photographs, and illustrations. 2 illustrates the configuration in which the control unit 50 is divided into the main control unit 60 and the display control unit 70, but the configuration is not limited thereto. For example, the control unit 50 may be a single control unit that has the functions of the main control unit 60 and the display control unit 70.

FIG. 3 is a flowchart of time correction processing.
The time adjustment process shown in the figure is executed by the main control unit 60 when the time measured by the time measuring unit 66 reaches a predetermined time, such as 2:00 am (automatic reception mode). The time correction process is also executed when the user moves to the forced reception mode by operating the operation buttons 6A and 6B. As described above, the time adjustment process is automatically executed every 24 hours, and is also executed at the timing when the operation for shifting to the forced reception mode is performed. In addition, the period which performs a time correction process in automatic reception mode is not restricted to 24 hours, For example, 1 hour, 6 hours, etc. may be sufficient.

  When the time correction process is started, the main control unit 60 performs a process of controlling the receiving unit 10 to receive a standard radio wave (S101). Here, the receiving unit 10 receives the standard radio wave via the antenna 12, demodulates and decodes the received standard radio wave, and outputs time information included in the standard radio wave to the main control unit 60. The standard radio wave is a radio signal having a frame that is repeatedly transmitted at 1 minute intervals. Each frame includes time information (a year, a total date from January 1 of that year, an hour, and a minute) indicating the time of the head marker located at the head of the frame. The position of the head marker corresponds to the rising edge of the minute (0 seconds per minute).

  Next, the main control unit 60 determines whether or not the time information has been successfully received (S102). For example, the main control unit 60 causes the receiving unit 10 to receive the standard radio wave repeatedly transmitted at 1 minute intervals three times continuously, and the three pieces of time information obtained therefrom indicate different times by one minute. If it is, it is determined that the reception of time information has been successful (S102: YES), and otherwise, it is determined that reception of time information has failed (S102: NO). The standard radio wave includes information that is not necessarily required for time correction. For this reason, in S102, the success or failure of reception is determined only for time information included in the standard radio wave, but the success or failure of reception may be determined for information of one frame of the standard radio wave. .

  In S102, the main control unit 60 compares the received time information with the time measured by the time measuring unit 66, and determines that the time information has been successfully received when the difference between the two is within a predetermined range ( S102: YES), if the difference between the two is not within the predetermined range, it may be determined that reception of the time information has failed (S102: NO). In S102, the main control unit 60 checks whether or not a transmission error has occurred in the received time information using the parity bit included in the standard radio wave, and if no transmission error has occurred, the time information May be determined to have been successfully received (S102: YES), and if a transmission error has occurred, it may be determined that reception of time information has failed (S102: NO). According to these two methods, it is possible to determine whether or not the reception of the time information has been successful only by receiving a standard radio wave for one frame.

  When the reception of the time information is successful (S102: YES), the main control unit 60 (time correction unit 68) corrects the time measured by the time measuring unit 66 (S103). For example, when it is determined that the time information has been successfully received by receiving the standard radio wave three times in succession, the time correction unit 68 adds 1 minute to the time information received for the third time, and corresponds to this time information. The count value to be written is written to the time counter in the time measuring unit 66 at the timing when the next head marker is received. Thereby, the time measured by the time measuring unit 66 is corrected to an accurate time based on the received time information. In addition, when it is determined that the time information has been successfully received by comparison with the timekeeping time or parity check, the time correction unit 68 adds 1 minute to the time information that has been successfully received, and the count corresponding to this time information. The value is written to the time counter in the time measuring unit 66 at the timing when the next head marker is received, and the time measured by the time measuring unit 66 is corrected.

  After the time adjustment, the main control unit 60 instructs the display control unit 70 to display the display image 100 with a normal contrast (S104), and the time adjustment process is finished. The display control unit 70 notifies the display unit 80 of an instruction from the main control unit 60 and, based on the time measured from the main control unit 60 when the display image 100 is updated, for example, every minute. The first layer image (number or symbol image indicating the time) is updated. Further, the display control unit 70 superimposes the first layer image and the second layer image and draws them on the VRAM 74, and the display unit 80 is written in the VRAM 74 under the control of the display control unit 70. The display image 100 for one screen is displayed with normal contrast. As a result, when the reception of time information is successful (S102: YES), for example, a display image 100 as shown in FIG. 4 is displayed on the display unit 80 until the reception of time information fails thereafter.

  On the other hand, when reception of time information has failed (S102: NO), the main control unit 60 instructs the display control unit 70 to display the display image 100 with a contrast different from the normal contrast (S105). Finish the time adjustment process. The display control unit 70 notifies the instruction from the main control unit 60 to the display unit 80, and at the timing when the display image 100 is updated thereafter, the first layer is based on the time measured from the main control unit 60. Update the image. The display control unit 70 also draws the first layer image and the second layer image on the VRAM 74 in a superimposed manner. When the contrast is changed, the display image 100 for one screen drawn in the VRAM 74 is the same when the time information is successfully received and when the time information is successfully received if the time count is the same.

  Under the control of the display control unit 70, the display unit 80 displays the display image 100 for one screen written in the VRAM 74 with a contrast different from the normal contrast. For example, when the display unit 80 is a black and white binary display EPD panel, the display unit 80 is configured to receive the time information on the magnitude and application time of the voltage applied between the pixel electrode and the common electrode. By making the values different from each other, the contrast of the entire display image 100 can be changed. As a result, when reception of time information fails (S102: NO), for example, a display image 100 as shown in FIG. 5 is displayed on the display unit 80 until reception of time information succeeds thereafter.

  The example shown in FIGS. 4 and 5 is a case where the contrast when the reception of time information fails is lower than the normal contrast when the reception of time information is successful. That is, an example in which the display image 100 (FIG. 5) displayed when reception of time information fails is displayed with a lower contrast than the display image 100 (FIG. 4) displayed when reception of time information is successful. It is. Therefore, the black portion in the display image 100 of FIG. 4 is gray in the display image 100 of FIG. Note that the contrast when the reception of time information fails may be made higher than the contrast when the reception of time information is successful. In short, the contrast of the display image 100 may be changed depending on whether the time information is successfully received or not.

  If the reception of the time information fails (S102: NO), the contrast of the display image 100 is changed, but the user who notices the change in the contrast of the display image 100 operates the operation buttons 6A and 6B to forcibly receive it. If the time adjustment process is executed next and the time information is successfully received (S102: YES), such as when the mode is changed or when the time adjustment process is executed again in the automatic reception mode, the contrast of the display image 100 is reduced. Return to normal contrast.

  As described above, according to the present embodiment, the display image 100 including the time measurement time is displayed on the display unit 80. In addition, the control unit 50 changes the contrast of the entire display image 100 depending on whether the time information has been successfully received or not. Therefore, the user can see the display image 100 at a glance, and based on the time information, the success or failure of the reception of the time information and the time measured on the display unit 80 are corrected based on the difference in contrast of the display image 100. It is possible to immediately grasp whether the time is accurate. Further, since the contrast of the entire display image 100 may be changed, control for changing the contrast is easy.

Second Embodiment
A second embodiment of the present invention will be described. In addition, about the component same as 1st Embodiment, the code | symbol used by description of 1st Embodiment is diverted, and description is abbreviate | omitted suitably.

  If reception of time information fails in the time adjustment process described in the first embodiment (S102: NO), the contrast of the display image 100 is changed. In this case, as described above, when the time adjustment process is executed next and reception of time information is successful (S102: YES), the contrast of the display image 100 is returned to the normal contrast. However, in a situation where the time information cannot be received, such as when the user wearing the electronic timepiece 1 stays in a room without a window, the contrast of the display image 100 cannot be restored to the original time. Under such a situation, the display image 100 as shown in FIG. 5 continues to be displayed, which makes it difficult to see the display of the electronic timepiece 1. Therefore, in the present embodiment, a case will be described in which the contrast of the display image 100 can be returned to the normal contrast even in a situation where time information cannot be received.

FIG. 6 is a flowchart of the contrast change process.
In the contrast change process shown in FIG. 5, when the time information reception fails in the time adjustment process and the display image 100 as shown in FIG. 5 is displayed, the operation buttons 6A and 6B are operated and the display image 100 is displayed. Is executed by the main control unit 60 when it is instructed to forcibly change the contrast.

  When the contrast change process is started, the main control unit 60 instructs the display control unit 70 to display the display image 100 with normal contrast (contrast when reception of time information is successful) (S201). This instruction is notified to the display unit 80 via the display control unit 70. Therefore, the display unit 80 displays the display image 100 at a normal contrast when it is time to update the display image 100 thereafter. Therefore, even in a situation where the time information cannot be received, the contrast of the display image 100 can be forcibly changed to the contrast when the time information is successfully received.

  Next, the main control unit 60 starts timing (S202), and determines whether or not a predetermined time such as 3 hours has passed (S203). When the predetermined time has elapsed (S203: YES), the main control unit 60 instructs the display control unit 70 to display the display image 100 with the contrast when reception of time information has failed (S204). Finish the contrast change process. This instruction is also notified to the display unit 80 via the display control unit 70. Therefore, the display unit 80 displays the display image 100 at the contrast when the reception of the time information has failed when the display image 100 is updated thereafter. Therefore, even when the user operates the operation buttons 6A and 6B to forcibly change the contrast of the display image 100, the contrast of the display image 100 fails to receive time information after a predetermined time has elapsed. The contrast is restored. For this reason, the user can be made to recognize again that reception of time information has failed, and that the time measured on the display unit 80 is not an accurate time corrected based on the time information.

  The contrast of the display image 100 may be gradually returned from the contrast when the reception of time information is successful to the contrast when the reception of time information fails. For example, after changing to the contrast when the time information is successfully received in S201, the contrast of the display image 100 is changed step by step every hour, and reception of the time information fails after 3 hours. You may make it return to the contrast in the case of doing.

  As described above, according to the present embodiment, even when the time information cannot be received, the user operates the operation buttons 6A and 6B so that the contrast of the display image 100 is successfully received. The contrast can be forcibly changed. Even when the contrast of the display image 100 is forcibly changed in this way, the contrast of the display image 100 is returned to the contrast when the reception of time information has failed when a predetermined time has elapsed. Therefore, it is possible to make the user know again that reception of time information has failed and that the time measured on the display unit 80 is not an accurate time corrected based on the time information.

<Modification>
Each embodiment illustrated above can be variously modified. Specific modifications are exemplified below. Note that two or more aspects arbitrarily selected from the following examples can be combined as appropriate within a range that does not contradict each other.

(1) Instead of changing the contrast of the entire display image 100, the contrast of a part of the display image 100 may be changed. For example, FIG. 7 and FIG. 8 are modifications of the display image 100 displayed when reception of time information fails. 7 and 8, the display image 100 is composed of a time image 100A indicating a clock time and a background image 100B. FIG. 7 shows a case where the contrast of only the background image 100B in the display image 100 is changed. In the case of FIG. 7 as well, since the ratio of the background image 100B to the entire display image 100 is large, the user can see whether or not the reception of the time information has succeeded due to the difference in the contrast of the background image 100B. In addition, it is possible to immediately grasp whether or not the time measured on the display unit 80 is an accurate time corrected based on the time information. Further, since the contrast of the time image 100A in the display image 100 is not changed, the display of the time measurement time does not become difficult to see.

  On the other hand, FIG. 8 shows a case where the contrast of only the time image 100A in the display image 100 is changed. In the case of FIG. 8, the ratio of the time image 100A to the entire display image 100 is small, but the user views the electronic timepiece 1 in order to grasp the time, and the portion of the time image 100A is the portion most watched by the user. It is. Therefore, even in a configuration in which only the contrast of the time image 100A is changed, the user can determine whether the reception of the time information is successful or the time measured on the display unit 80 is based on the difference in the contrast of the time image 100A. It is possible to immediately grasp whether or not the correct time is corrected based on.

(2) Instead of changing the contrast of the display image 100, the color of the display image 100 may be changed. Thus, even if it is the structure which changes a color instead of contrast, there exists the same effect. In the case of changing the color instead of the contrast, for example, when the display image 100 for one screen is written in the VRAM 74, the entire display image 100 or the case where the reception of the time information is successful or the case where the time information is failed. Some colors are changed.

(3) The electronic timepiece 1 may be a wrist watch having a function of receiving a satellite signal including time information from a GPS (Global Positioning System) satellite and correcting the time measurement time. In addition, the electronic timepiece 1 includes a short-range wireless communication unit such as Bluetooth (registered trademark) or NFC (Near Field Communication) as a reception unit, and receives time information via a network via a personal computer or a smartphone. Good. In addition, the electronic timepiece 1 may receive time information via a communication cable, and the form of receiving (acquiring) time information is not limited to wireless, but may be wired.

(4) The time measured by the time measuring unit 66 is not limited to the time composed of year, month, day, hour, minute, and second. For example, it may be a time composed of hours, minutes, seconds or only hours and minutes. The same applies to the time measured on the display unit 80. Further, instead of displaying the time using numerals and symbols, the time may be displayed using an image of an analog clock having an hour hand and a minute hand. Further, an image having a display size larger than the display area of the display unit 80 may be scroll-displayed as the background image. The display unit 80 is not limited to an EPD panel, and may be a liquid crystal display panel, an organic EL (Electro Luminescence) panel, or the like. The electronic timepiece 1 is not limited to a wristwatch, and may be a table clock, a wall clock, a pocket watch, or the like.

DESCRIPTION OF SYMBOLS 1 ... Electronic timepiece, 5 ... Outer case, 5A ... Opening part, 6A, 6B ... Operation button, 7 ... Belt attachment part, 8 ... Belt, 10 ... Reception part, 12 ... Antenna, 20 ... Oscillation circuit, 30 ... Frequency division Circuit, 40 ... Power supply unit, 50 ... Control unit, 60 ... Main control unit, 62 ... ROM, 64 ... RAM, 66 ... Time measuring unit, 68 ... Time correction unit, 70 ... Display control unit, 72 ... ROM, 74 ... VRAM 80 ... display unit, 100 ... display image, 100A ... time image, 100B ... background image.

Claims (9)

A display unit;
A timekeeping section that keeps time,
An acquisition unit for acquiring time information;
A time correction unit for correcting the time of the timekeeping unit based on the time information acquired by the acquisition unit;
A control unit that causes the display unit to display a display image including the timekeeping time,
The electronic timepiece, wherein the control unit changes a contrast or a color of the display image depending on whether the acquisition unit succeeds in acquiring the time information or fails. 2. The electronic timepiece according to claim 1, wherein the control unit changes all contrasts or colors of the display image depending on whether the acquisition unit succeeds in acquiring the time information or fails. 3. . The display image includes a background image,
The said control part changes the contrast or the color of the said background image among the said display images, when the said acquisition part succeeds in acquisition of the said time information, and when it fails. Electronic watch. The said control part changes the contrast or the color of the part which shows the said time-measurement time among the said display images, when the said acquisition part succeeds in acquisition of the said time information, and when it fails. The electronic timepiece according to 1. When the acquisition of the time information fails, the control unit changes the contrast or color of the display image to a contrast or color different from that when the acquisition of the time information is successful, and after the change, the time 5. The contrast or color of the display image is returned to the contrast or color when the acquisition of the time information is successful when the acquisition of information is successful. 5. The electronic watch described. It has an operation part,
When the acquisition of the time information fails, the control unit changes the contrast or color of the display image to a contrast or color different from that when the acquisition of the time information is successful, and after the change, the operation The contrast or color of the display image is changed to the contrast or color when the acquisition of the time information is successful according to the operation of the unit. Electronic watch. When the control unit fails to acquire the time information of the contrast or color of the display image after a predetermined time has elapsed after changing the contrast or color of the display image in accordance with the operation of the operation unit The electronic timepiece according to claim 6, wherein the contrast or color is restored. The control unit, after changing the contrast or color of the display image according to the operation of the operation unit, the contrast or color of the display image from the contrast or color when the time information has been successfully acquired, The electronic timepiece according to claim 6 or 7, wherein the electronic timepiece is gradually returned to the contrast or color when acquisition of time information fails. A display control method for an electronic timepiece that acquires time information and corrects timekeeping time,
When the acquisition of the time information is successful, the timekeeping time is corrected based on the acquired time information, and a display image including the timekeeping time is displayed on the display unit.
If the acquisition of the time information fails, the display unit including the time measurement time is corrected without changing the time measurement time, and the display unit changes the contrast or the color when the time information acquisition is successful. A display control method for an electronic timepiece characterized by comprising:

Images