JP2005332362A - Device with built-in clock and imaging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device with a built-in clock and an imaging device which can make a user recognize that there is an error in time of the built-in clock, and to provide an imaging device which can dissolve inconvenience at the time when the error of time is happened. <P>SOLUTION: A device acquires time data from the clock 52 of a personal computer 50, and also acquires time data from the built-in clock 30 of a digital camera 10. And this device judges whether time data of the clock 52 of the computer and time data of the built-in clock 30 of the digital camera 10 are same time or not, the device displays to an LCD 18 that there is reliability in time when both time are same. On the other hand, the device displays to the LCD 18 that the time is inaccurate when both time are not same. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a timepiece built-in device and an imaging device.
So far

  A clock of a built-in clock type device such as a digital camera, a PDA, or a personal computer may be greatly deviated from the actual time due to battery replacement or other reasons. However, for these built-in clock type devices, other main functions different from the clock function are used, so correction of the time difference tends to be forgotten.

By the way, Patent Documents 1 to 4 disclose techniques for correcting the time by obtaining a standard time from a broadcast signal, a time signal obtained from a telephone line, and time information included in a GPS signal. However, in the techniques shown in Patent Documents 1 to 4, since the time is automatically corrected, the user cannot recognize that there is an error in the time of the built-in clock until the time is corrected. The inconvenience during the occurrence of this could not be solved.
JP-A-5-150058 JP-A-8-316858 JP-A-9-96691 JP-A-9-261716

  The present invention has been made in consideration of the above-mentioned facts, and provides a built-in clock type device and an imaging device capable of eliminating the inconvenience caused by an error in the time of the built-in clock. Objective.

  In order to solve the above-described problem, the timepiece built-in type device according to claim 1 can acquire time data of an external timepiece built in the external device by being connected to the internal timepiece and the external device. Time data acquisition means, determination means for determining whether the time of the external clock read by the time data acquisition means and the time of the internal clock are the same time, and the determination by the determination means is denied A time mismatch notification means for notifying that the time of the built-in clock is not the same as the time of the external clock.

  When the timepiece built-in type device of the present invention is connected to an external device incorporating an external timepiece, time data of the external timepiece is acquired by the time acquisition means. Here, the time data means data including at least one of year, month, day, hour, minute, and second. Then, the determination unit determines whether the time of the external clock read by the time acquisition unit and the time of the built-in clock are the same time. Here, the same time does not need to be a complete same time, and may be determined to be the same time as long as it is within a predetermined range such as minutes or seconds. If the determination by the determination unit is negative, the time mismatch notification unit notifies that the time of the internal clock does not match the external clock.

  By this notification, the user can recognize that the time of the built-in clock is inconsistent with the external clock and is likely to be inaccurate. Therefore, you can know inconveniences that occurred while the time was inaccurate, such as errors in the file creation time of files created during this time, errors in the transmission / reception time of data sent and received during this time, Appropriate measures such as correcting these times can be taken.

  The time built-in type device according to the present invention outputs a notification that the time of the built-in clock is coincident with the external clock when the judgment by the judging means is affirmed. It is also possible to further include a time coincidence notification means.

  When the time of the external clock and the time of the built-in clock are the same time, the time of the built-in time is likely to be accurate. Therefore, when the time of the external clock and the time of the built-in clock are the same time, a notification that the time of the built-in clock matches the external clock is output by the time coincidence notification means. Thereby, the user can recognize that the time of the built-in time is highly likely to be accurate.

According to a third aspect of the present invention, there is provided an imaging device comprising: an imaging unit capable of capturing image data; a built-in clock; image data captured by the imaging unit; and a time of the built-in clock at the time of capturing the image data. Recording means for recording an image file created on the basis thereof;
By connecting to an external device, time data acquisition means capable of acquiring the time data of the external clock built in the external device, the time of the external clock read by the time data acquisition means, and the internal clock And a date and time indicating that the imaging date and time is incorrect in the image file recorded by the recording means when the determination by the determining means is denied. And writing means for writing inaccurate information.

  In the imaging device according to claim 3, image data is captured by the imaging unit, and an image file created based on the captured image data and the time of the built-in clock at the time of capturing the image data, Recorded by recording means.

  When the imaging device is connected to an external device incorporating an external clock, time data of the external clock is acquired by the time data acquisition means. Then, the determination unit determines whether the time of the external clock read by the time data acquisition unit and the time of the built-in clock are the same time. The same time here does not need to be completely the same time, and may be determined to be the same time as long as it is within a predetermined range such as minutes or seconds. When the determination by the determination unit is negative, the writing unit writes date / time inaccuracy information indicating that the imaging date / time is incorrect to the image file recorded by the recording unit.

  According to the imaging apparatus of the third aspect, since the date and time inaccurate information is written in the image file, the user does not match the time of the internal clock built in the imaging apparatus and the time of the external clock. It can be recognized that the shooting date and time of the recorded image file is inaccurate.

  According to a fourth aspect of the present invention, there is provided an imaging device including: an imaging unit capable of capturing image data; a built-in clock; image data captured by the imaging unit; and a time of the built-in clock at the time of capturing the image data. A recording means for recording an image file created based on the time data acquisition means capable of acquiring time data of an external clock built in the external device by being connected to the external device, and the time data A determination unit that determines whether the time of the external clock read by the acquisition unit and the time of the built-in clock are the same time; and when the determination by the determination unit is negative, the time of the built-in clock is Based on the time difference between the internal clock and the external clock, the time and date of recording recorded in the image file recorded by the recording means are corrected to the time of the external clock. It is configured to include a correction means positive for the.

  In the imaging device according to claim 4, image data is captured by the imaging unit, and an image file created based on the captured image data and the time of the built-in clock at the time of capturing the image data, Recorded by recording means.

  When the imaging device is connected to an external device incorporating an external clock, time data of the external clock is acquired by the time data acquisition means. Then, the determination unit determines whether the time of the external clock read by the time data acquisition unit and the time of the built-in clock are the same time. The same time here does not need to be completely the same time, and may be determined to be the same time as long as it is within a predetermined range such as minutes or seconds. When the determination by the determination unit is negative, the correction unit corrects the time of the internal clock to the time of the external clock, and the imaging date and time recorded in the image file recorded by the recording unit is the internal clock. It is corrected based on the time difference from the external clock.

  Therefore, according to the imaging device of claim 4, the time of the internal clock of the imaging device is automatically corrected to the time of the external clock, and the shooting date and time recorded in the image file is also automatically corrected. , It is possible to eliminate the inconvenience that occurred during the time error.

  The imaging device according to claim 3 and claim 4 outputs a notification that the time coincides with the external clock when the determination by the determination means is affirmed as described in claim 5. A time coincidence notification unit may be further provided.

  When the time of the external clock and the time of the built-in clock of the imaging device are the same time, the time of the built-in time is highly likely to be accurate. Therefore, when the time of the external clock and the time of the built-in clock are the same time, a notification that the time of the built-in clock matches the external clock is output by the time coincidence notification means. Thereby, the user can recognize that the time of the built-in time is highly likely to be accurate.

  According to a sixth aspect of the present invention, there is provided a built-in clock type device, a built-in clock, a modified date storage means for storing a modified date / time when the time of the built-in clock is modified, and whether a predetermined period has elapsed from the modified date / time. A time period acquisition means for acquiring time data of an external clock built in the external device by being connected to the external device when the determination by the time period determination means is affirmed, When the determination by the time difference determination means for determining whether the time difference between the time of the external clock read by the time data acquisition means and the time of the built-in clock is a predetermined time or more, and when the determination by the time difference determination means is affirmed, Time correction means for correcting the time of the internal clock to the time of the external clock.

  In the timepiece built-in apparatus of the present invention, the correction date and time when the time of the internal clock is corrected is stored by the correction date and time storage means. Then, it is determined whether or not a predetermined period has elapsed from this correction date and time by the period elapsed determination means. If the determination here is affirmed, the time data acquisition means acquires time data of an external clock built in the external device by connecting to the external device.

  Next, the time difference determination means determines whether or not the time difference between the time of the external clock read by the time data acquisition means and the time of the internal clock is equal to or greater than a predetermined time. The predetermined time here may be a period stored in advance, or may be designated by an input by the user. Then, when the determination by the time difference determining means is affirmed, the time correcting means corrects the time of the internal clock to the time of the external clock.

  Thus, according to the device with a built-in timepiece of the present invention, the time can be confirmed and corrected by being connected to the external device after a predetermined period has elapsed since the time was corrected.

  The timepiece built-in device according to claim 7 is connected to an internal clock and an external device, whereby time data acquisition means capable of acquiring time data of the external clock built in the external device, The time difference determination means for determining whether or not the time difference between the time of the external clock acquired by the time data acquisition means and the time of the built-in clock is a predetermined time or more, and when the determination by the time difference determination means is affirmed, At the time of connection between the time adjustment means for correcting the time of the clock to the time of the external clock and the external device, the power supplied from the connection cable is used on the basis of the preset selection or from the operation power supply Power supply source determination means for determining whether to use the supplied power.

  Here, the power supply for operation includes a battery housed inside the watch built-in type device and an external power supply supplied via an AC adapter or the like.

  When the timepiece built-in type device of the present invention is connected to an external device incorporating an external timepiece, time data of the external timepiece is acquired by the time acquisition means. Then, the time difference determination means determines whether or not the time difference between the time of the external clock acquired by the time acquisition means and the time of the built-in clock is a predetermined time or more. If the determination is affirmed, the time correction means corrects the time of the internal clock to the time of the external clock. The power supply at this time is determined by the power supply source determination means, based on a preset selection, whether to use the power supplied from the connection cable or the power supplied from the operation power supply. .

  Thus, according to the timepiece built-in device of the present invention, it is possible to select the power supply source when the time is corrected. The preset selection may be specified by the user, or based on a predetermined condition (for example, when power can be supplied from the connection cable, the power from the connection cable is always used. Etc.) may be determined.

  In the watch built-in type device according to claim 8, when it is determined by the power supply source determining means that the power supplied from the connection cable is to be used, as described in claim 7, It is characterized in that power is supplied only to a portion necessary for time correction by the time correction means.

  According to this configuration, when time correction is performed by connection with an external device, it is possible to select power supply only to a portion necessary for time correction, and power consumption can be reduced.

  As described above, according to the timepiece built-in type device and the imaging device of the present invention, it is possible to eliminate the inconvenience caused by an error in the time of the built-in timepiece.

  Hereinafter, a timepiece built-in device of the present invention will be described with reference to the drawings. In the present embodiment, a digital camera will be described as an example of a device with a built-in watch, but the present invention is also applicable to a mobile phone, a mobile phone with a camera, a personal computer, a PDA, and the like.

[First Embodiment]
As shown in FIG. 1A, the digital camera 10 of this embodiment includes a camera body 12, a lens 14 on the front surface, and a release button 16 on the upper surface. Further, as shown in FIG. 1B, a liquid crystal display (hereinafter referred to as “LCD”) 18, an instruction key 22, a power supply SW 24, and a plurality of input buttons 26 for performing various inputs are provided on the back.

  As shown in FIG. 2, a USB interface 28 is provided on the side surface of the camera body 12. The USB interface 28 can be connected to a personal computer 50 as an external device via a USB cable K. In this embodiment, a personal computer is taken as an example of the external device. However, the external device may be another device with a built-in watch, such as another digital camera, a PDA, or a mobile phone.

  FIG. 3 shows a schematic block diagram of the digital camera 10 and the personal computer 50. Inside the digital camera 10, a built-in clock 30, a control unit 32, a media interface 34, an internal memory 36, and an imaging system that takes in the image data D and creates an image file F based on the image data D are configured. (Hereinafter referred to as “imaging system 38”). The image file F includes shooting date / time data and image data. The time data of the built-in clock 30 at the time of taking in the image data D is written in the image file F as shooting date / time data. The control unit 32, media interface 34, imaging system 38, LCD 18, internal memory 36, built-in clock 30, and USB interface 28 are connected to each other via a bus 40. Various programs executed by the control unit 32 are stored in the internal memory 36, and the image file F is temporarily stored. The control unit 32 is connected to the instruction key 22, the power button 24, and the input button 26. The control unit 32 reads various programs stored in the internal memory 36 and controls the entire digital camera 10 based on the read programs. The media interface 34 writes the image file F to the external memory 35 and reads the image file F from the external memory 35.

  The personal computer 50 includes a clock 52, LCD 54, hard disk 56, control unit 58, USB interface 60, input key 62, and power button 64. The clock 52, LCD 54, hard disk 56, control unit 58, and USB interface 60 are connected to each other via a bus 66. An input key 62 and a power button 64 are connected to the control unit 58.

  When the USB interface 28 of the digital camera 10 configured as described above and the USB interface 60 of the personal computer 50 are connected via the USB cable K, the control unit 32 of the digital camera 10 executes the time confirmation process shown in FIG. The

  In step S10, time data is acquired from the clock 52 of the personal computer 50. In step S12, time data is acquired from the built-in clock 30 of the digital camera 10. The time data here includes year, month, day, hour, minute, and second data. In step S14, it is determined whether the time data of the clock 52 of the personal computer 50 and the time data of the built-in clock 30 of the digital camera 10 are the same time. Here, the same time does not need to be completely the same time, but means within a predetermined range such as minutes or seconds.

  If the determination is affirmative, in step S16, a display indicating that the time is reliable is displayed on the LCD 18 as shown in FIG. This is because when the time of the clock 52 and the time of the built-in clock 30 are the same, there is a high possibility that the time of the built-in clock 30 is accurate. On the other hand, if the determination in step S14 is negative, in step S18, an indication that the time is inaccurate is displayed on the LCD 18 as shown in FIG. This is because the time of the clock 52 and the time of the built-in clock 30 are different, and the time of the built-in clock 30 is likely to be incorrect. With this display, the user can recognize that the time data of the digital camera 10 is inaccurate, and when the user corrects the time of the built-in clock 30 or the time of the built-in clock 30 is incorrect. Correction of the date information of the created image file F recorded in the external memory 35 can be prompted.

  In this process, when the time data of the clock 52 of the personal computer 50 and the time data of the built-in clock 30 of the digital camera 10 are the same time, the process returns to the LCD 18 in step S16, as shown in FIG. As described above, the display indicating that the time is reliable is performed, but step S16 is not necessarily required. In particular, such display allows the user to recognize that the time data of the digital camera 10 is reliable.

  Before the digital camera 10 is connected to the personal computer 50, if the user puts the digital camera 10 into the image file shooting date / time automatic correction mode by inputting from the input button 26 and the instruction key 22 in advance, the digital camera 10 and the personal computer 50 are personally connected. When the computer 50 is connected, the image file shooting date / time correction process shown in FIG. 6 is executed.

  In step S20, time data is acquired from the clock 52 of the personal computer 50, and in step S22, time data is acquired from the built-in clock 30 of the digital camera 10. In step S24, it is determined whether the time data of the clock 52 of the personal computer 50 and the time data of the built-in clock 30 of the digital camera 10 are the same time. If the determination is affirmative, in step S26, an indication that the time is reliable is displayed on the LCD 18 as shown in FIG. On the other hand, if the determination in step S24 is negative, the time of the built-in clock 30 is corrected to the time of the clock 52 of the personal computer 50 in step S27. In step S28, shooting date / time correction processing is performed.

  As shown in FIG. 7, the photographing date / time correction process calculates a difference S between the time data of the clock 52 of the personal computer 50 and the time data of the built-in clock 30 of the digital camera 10 in step S30. In step S32, the image file F recorded in the external memory 35 is read, and in step S34, the shooting date / time data of the image file F recorded in the external memory 35 is rewritten. The rewriting here is performed based on the calculated difference S. For example, when the difference S is 1 minute and 10 seconds, it is assumed that the time of the built-in clock 30 of the digital camera 10 is delayed by 1 minute and 10 seconds, and the already recorded shooting date and time data is advanced by 1 minute and 10 seconds. Rewrite to something.

  Further, the reading of the image file and the rewriting of the shooting date / time data are executed for all the image files F recorded in the external memory 35.

  According to this process, it is possible to automatically correct the shooting date / time data of the image file F created while the time of the built-in clock 30 is inaccurate.

  In step S28 of this process, the shooting date / time correction process for automatically correcting the shooting date / time data of the image file F is performed. However, instead of the shooting date / time correction process in step S28, the shooting date / time correction shown in FIG. Accurate information writing processing can also be performed. In the shooting date / time incorrect information writing process, the image file F is read from the external memory 35 in step S40, and shooting date / time incorrect information indicating that the shooting date / time is incorrect is added to the image file F in step S42. According to this shooting date / time inaccurate information writing process, the shooting date / time inaccuracy information is added to the image file F, so that the user can specify the image file F with an incorrect shooting date / time. You can correct the shooting date.

  As described above, in this embodiment, when the time of the clock 52 of the personal computer 50 and the time of the built-in clock 30 are different, it is determined that the time of the built-in clock 30 is incorrect and the time is incorrect. Can be displayed, or the time of the built-in clock 30 and the shooting date / time data of the image file F can be corrected to eliminate the inconvenience caused by the time of the built-in clock 30 being inaccurate.

  In this embodiment, the time data is obtained from the clock 52 of the personal computer 50 and the accuracy of the time of the internal clock 30 is determined. However, the digital camera 10 is simply set in advance without being connected to the personal computer 50. The accuracy of the time of the internal clock 30 may be determined based on the default time being set, that is, the initial value of the time of the digital camera 10. This is because the time of the built-in clock 30 starts from an initial value when the battery is replaced. In this case, when the time of the built-in clock 30 is started from the initial value and the time is not corrected by the user, it is determined that the time of the built-in clock 30 is not accurate. Then, a time as shown in FIG. 5A is output to the LCD 18, or by adding inaccurate shooting date / time information to the image file F recorded in the external memory 35, the time is given to the user. Inconvenience due to inaccuracy can be recognized.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In addition, about the part similar to 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  As shown in FIG. 9A, the digital camera 80 of this embodiment includes a camera body 12, a lens 14 on the front surface, and a release button 16 on the upper surface. Further, as shown in FIG. 9B, a liquid crystal display (hereinafter referred to as “LCD”) 18, an instruction key 22, a power switch 24, a power selection switch 25, and a plurality of other inputs for performing various inputs as shown in FIG. A button 26 is provided. A USB interface 28 is provided on the side surface of the camera body 12 (see FIG. 2). When the USB cable K is connected to the USB interface 28, the power selection switch 25 selects whether the power supply source to the digital camera 80 is inside the digital camera 80 or the connected USB cable K. It is a switch to do. The power selection switch 25 slides the groove 25A to the left and right to select an IN position for selecting a power source for operating the digital camera 80 (an external power source using an AC adapter or a battery in a battery case), and a USB cable K as a power source. It is possible to move between the OUT positions.

  FIG. 10 shows a schematic block diagram of the digital camera 80 and the personal computer 50. Inside the digital camera 80, a built-in clock 30, a control unit 32, a media interface 34, an internal memory 36, and an imaging system 38 are provided. The control unit 32, media interface 34, imaging system 38, LCD 18, internal memory 36, built-in clock 30, and USB interface 28 are connected to each other via a bus 40.

  Various programs executed by the control unit 32 are stored in the internal memory 36, the image file F is temporarily stored, and the date and time when the latest internal clock 30 was corrected (the correction has not been made yet). The previous correction date / time data indicating the default date / time when not being executed, the time correction interval data storing the timing for executing the date / time correction of the built-in clock 30, and the time difference from the clock of the external device is a predetermined value or more In this case, time difference predetermined value data for correcting the time is stored. The time correction interval data is data used to determine the time correction timing of the built-in clock 30 in the digital camera 80, and has a predetermined elapsed period as content. In other words, the time adjustment is executed if the period of time correction interval data has elapsed from the previous correction date and time data, and the time correction is not executed if the period has not elapsed. As the time correction interval data, the user can register an arbitrary period in advance.

  The control unit 32 is connected to the instruction key 22, the power button 24, the power selection switch 25, and the input button 26.

  Since the configuration of the personal computer 50 is the same as that of the first embodiment, detailed description thereof is omitted.

  When the USB interface 28 of the digital camera 80 configured as described above and the USB interface 60 of the personal computer 50 are connected via the USB cable K, the digital camera 80 executes time correction period confirmation processing shown in FIG.

  In step S50, it is determined whether or not the power source selection switch 25 is in the IN position. If the determination is affirmative, in step S52, the digital camera 80 is activated for normal operation using the power from the operation power supply. If the determination is negative, since the power source selection switch 25 is in the OUT position, the power from the USB cable K is required to correct the time of the built-in clock 30 in step S54. It is supplied to the memory 36, the built-in clock 30, and the USB interface 28 to be activated.

  Next, in step S56, the predetermined time difference data, the previous correction date / time data, and the time correction interval data are read from the internal memory 36, and the current date / time data is read from the internal clock 30 in step S58. In step S60, the absolute value of the difference between the previous correction date / time data and the current date / time data is calculated. In step S62, it is determined whether the calculated absolute value is larger than the time correction interval data. If the determination is affirmed, the process proceeds to step S64 because a predetermined period has elapsed since the previous time correction. If the determination is negative, since the predetermined period has not elapsed since the previous time correction, this process is terminated as it is.

  In step S64, the current date and time data of the clock 52 of the personal computer 50 is acquired. In step S66, the absolute value of the difference between the current date and time data of the built-in clock 30 and the current date and time data of the clock 52 of the personal computer 50, that is, the time difference is calculated. . In step S68, it is determined whether or not the calculated time difference is larger than the time difference predetermined value data. If the determination is affirmative, the current date and time data of the clock 52 of the personal computer 50 is acquired again in step S70. In S72, the time of the built-in clock 30 is corrected to the current date and time data of the clock 52 of the personal computer 50. Thereafter, the previous correction date / time data is also replaced with the current date / time data of the clock 52 in step S74, and this processing is terminated. If the determination in step S68 is negative, the present process is terminated without correcting the time.

  According to the present embodiment, in the case of time correction, it is possible to select between the power supply for operation and the power supply from the USB cable K, and power is supplied only to portions necessary for time correction. Can be suppressed.

  Further, in the present embodiment, the time adjustment process is executed when a predetermined period has elapsed since the previous time adjustment, so the time adjustment process can be executed at a necessary time. Of course, the time adjustment process may be executed every time the USB cable K is connected by the user's selection. In this case, the process of step S62 in the flowchart of FIG. 11 may be skipped.

  In the present embodiment, an example in which the power source selection switch 25 is provided and the user selects the power source in advance has been described. However, when the USB cable K is connected without the power source selection switch 25, the power from the USB cable K is connected. Only supply may be performed, and normal activation may be performed when the user turns on the power button 24.

(A) of the digital camera of 1st Embodiment is a front view, (B) is a rear view. 1 is a perspective view of a digital camera and a personal computer according to a first embodiment. It is a schematic block diagram of the control system of the digital camera of 1st Embodiment. It is a flowchart of the time confirmation process of 1st Embodiment. On the LCD, (A) is a display indicating that the time is reliable, and (B) is a display indicating that the time is inaccurate. It is a flowchart of an image file imaging date correction process. It is a flowchart of an imaging date correction process. It is a flowchart of an imaging date incorrect information writing process. (A) of the digital camera of 2nd Embodiment is a front view, (B) is a rear view. It is a schematic block diagram of the control system of the digital camera of 2nd Embodiment. It is a flowchart of a time correction period confirmation process.

Explanation of symbols

10 Digital Camera 25 Power Selection Switch 30 Built-in Clock 32 Control Unit 35 External Memory 50 Personal Computer (External Device)
52 Clock (external clock)
80 Digital camera

Claims (8)

A built-in clock,
Time data acquisition means capable of acquiring time data of an external clock built in the external device by being connected to the external device;
Determination means for determining whether the time of the external clock read by the time data acquisition means and the time of the built-in clock are the same time;
A time mismatch notification means for notifying that the time of the built-in clock is not the same as the time of the external clock when the determination by the determination means is negative;
A device with a built-in clock.   The time built-in type device according to claim 1, further comprising a time coincidence notification unit that outputs a notification that the time of the built-in clock coincides with an external clock when the determination by the determination unit is affirmed. . Imaging means capable of capturing image data;
A built-in clock,
A recording unit for recording an image file created based on the image data captured by the imaging unit and the time of the built-in clock at the time of capturing the image data;
Time data acquisition means capable of acquiring time data of an external clock built in the external device by being connected to the external device;
Determination means for determining whether the time of the external clock read by the time data acquisition means and the time of the built-in clock are the same time;
A writing unit that writes date and time inaccurate information indicating that the imaging date and time is incorrect in the image file recorded by the recording unit when the determination by the determining unit is denied;
An imaging apparatus comprising: Imaging means capable of capturing image data;
A built-in clock,
A recording unit for recording an image file created based on the image data captured by the imaging unit and the time of the built-in clock at the time of capturing the image data;
Time data acquisition means capable of acquiring time data of an external clock built in the external device by being connected to the external device;
Determination means for determining whether the time of the external clock read by the time data acquisition means and the time of the built-in clock are the same time;
When the determination by the determination unit is negative, the time of the built-in clock is corrected to the time of the external clock, and the imaging date / time recorded in the image file recorded by the recording unit is set to the external clock. Correction means for correcting based on the time difference from the clock;
An imaging apparatus comprising:   The imaging device according to claim 3, further comprising a time coincidence notification unit that outputs a notification that the time coincides with an external clock when the determination by the determination unit is affirmed. A built-in clock,
Correction date and time storage means for storing a correction date and time when the time of the built-in clock is corrected;
A period elapsed determination means for determining whether a predetermined period has elapsed since the correction date and time;
Time data acquisition means for acquiring time data of an external clock built in the external device by being connected to the external device when the determination by the period elapsed determination means is affirmed;
Time difference determination means for determining whether or not a time difference between the time of the external clock read by the time data acquisition means and the time of the built-in clock is a predetermined time or more;
Time adjustment means for correcting the time of the built-in clock to the time of the external clock when the determination by the time difference determination means is affirmed;
A device with a built-in clock. A built-in clock,
Time data acquisition means capable of acquiring time data of an external clock built in the external device by being connected to the external device;
Time difference determination means for determining whether or not a time difference between the time of the external clock acquired by the time data acquisition means and the time of the internal clock is a predetermined time or more;
Time adjustment means for correcting the time of the built-in clock to the time of the external clock when the determination by the time difference determination means is affirmed;
Power supply source determination means for determining whether to use the power supplied from the connection cable or the power supplied from the power supply for operation based on a preset selection when connected to an external device; ,
A device with a built-in clock. When it is determined by the power supply source determination means that the power supplied from the connection cable is to be used, power is supplied only to a portion necessary for time correction by the time correction means,
The timepiece built-in device according to claim 7.

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