JP2003294876A - Radio controlled watch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio controlled watch capable of preventing correction to different time from the actual local time by providing a correction prohibition mode in which correction of indicated time by standard time wave is prohibited although the standard time wave can be received. <P>SOLUTION: A camera 1 comprises a mode SW 30 in which switching is possible between a correction mode in which standard time wave is received and correction of indication time is possible, and a correction prohibition mode in which correction of indication time by the standard time wave is prohibited. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio-controlled timepiece device capable of receiving standard time radio waves indicating standard time.

[0002]

2. Description of the Related Art Conventionally, there is known a radio timepiece that receives a standard time radio wave indicating a standard time and corrects the display time.
As an example of application of this radio-controlled watch to a camera, Japanese Patent Laid-Open No. 2001-2
As described in No. 09111, there is known one that receives a standard time radio wave indicating the standard time to facilitate the time setting of the camera.

[0003]

However, in the device having the radio clock function, the standard time radio wave is received and the display time is corrected even when the time is not desired to be corrected. For example, when a domestic radio-controlled timepiece device is used in a foreign country with a time difference, the radio-controlled timepiece device receives the standard time radio wave, the display time is corrected, and a deviation from the local time occurs.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a radio-controlled timepiece device capable of preventing the time from being corrected to a time different from the local time.

[0005]

In order to achieve such an object, a radio-controlled timepiece device according to the present invention is a radio-controlled timepiece device which receives a standard time radio wave indicating a standard time and corrects a display time, It is configured with a correction prohibition mode that prohibits correction of the display time by standard time radio waves.

Further, the radio-controlled timepiece device according to the present invention is characterized by further comprising operating means for setting the correction prohibition mode.

According to these inventions, the standard time radio wave can be received, but the correction of the currently displayed time and the like is prohibited when the correction prohibit mode is set. Therefore,
It is possible to prevent the time from being corrected to a time different from the local time.
In particular, it is effective when the domestic radio wave clock device is used in a foreign country where there is a time difference.

The radio-controlled timepiece device according to the present invention is characterized in that it is built in a camera. In this case,
The date and time recorded at the time of shooting can be made more appropriate.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. In this embodiment,
An example in which the present invention is incorporated in a camera is shown. Note that the dimensional ratios in the drawings do not necessarily match those in the description.

The camera according to the embodiment will be described.

FIG. 1 is a block diagram of a camera according to this embodiment. As shown in FIG. 1, the camera 1 according to the present embodiment
Receives the standard time radio wave indicating the standard time, and corrects the display time. The shutter button 10, the CPU
20, a mode SW 30, an antenna 40, a radio clock receiving circuit 50, and a crystal oscillator 60 are provided.

The shutter button 10 is operated during photographing. When the shutter button 10 is operated, the camera 1 captures an image of a subject. CPU20
Controls the entire camera 1 and executes a program stored in a ROM (not shown) or the like.

The mode SW 30 is a switch capable of switching between a correction mode in which the standard time radio wave is received and the display time can be corrected, and a correction prohibition mode in which the correction of the display time by the standard time radio wave is prohibited. This mode SW30 is
When the camera 1 is shifted from the correction mode to the correction prohibition mode, it functions as an operation means for changing the correction prohibition mode. The correction prohibition mode described here always prohibits the correction of the display time by the standard time radio wave, and unless the camera 1 is set to the correction mode,
The display time of is disabled.

The antenna 40 functions as a receiving antenna for receiving standard time radio waves. Radio clock receiving circuit 5
Reference numeral 0 is a circuit for receiving standard time radio waves. The standard time radio wave is received by the antenna 40 and the radio clock receiving circuit 50. The crystal oscillator 60 is for generating a reference clock. The CPU 20 counts up seconds / hours and days / months based on this reference clock.

In such a camera 1, the mode SW is
When 30 is switched from the correction mode to the correction prohibition mode, the CPU 20 does not perform the time correction based on the standard time radio wave. On the other hand, when the mode SW 30 is switched from the correction prohibit mode to the correction mode, the CPU 20
Adjusts the time based on the standard time radio wave.

Next, the operation of the camera 1 will be described with reference to FIG.

First, in S1, it is determined whether or not the power source of the camera 1 is turned on. If it is determined that the power is not turned on, the operation ends. When it is determined that the power is on, the process proceeds to S2, and it is determined whether the correction prohibit mode is set. When it is determined that the correction prohibit mode is not set, that is, when the correction mode is determined, the process proceeds to S3, and reception of the standard time radio wave is started. Then, in S4, it is determined whether or not the standard time radio wave is normally received. If it is determined that the reception was not successful, the operation ends. When it is determined that the reception time is normal, the process proceeds to S5, and the display time is corrected to the time based on the standard time radio wave.

When it is determined in S2 that the correction prohibit mode is set, the process proceeds to S6, and the time based on the reference clock of the crystal oscillator is set as the display time. Then S
The process moves to 7 and the time is adjusted manually. The time adjustment here is performed by the user inputting the second, minute, hour, day, month and year. When the input is performed, the series of processes is completed.

As described above, according to this embodiment, the standard time radio wave can be received, but the correction of the currently displayed time is prohibited when the correction prohibit mode is set. Therefore, it is possible to prevent the time from being corrected to a time different from the local time. This is particularly effective when the domestic camera 1 is used in a foreign country where there is a time difference.

Further, according to this embodiment, it is possible to make the display of the date and time recorded at the time of photographing more appropriate.

In the present embodiment, the radio-controlled timepiece device built in the camera 1 has been described as an example, but the present invention is not limited to this, and the radio-controlled timepiece device is built in another device. Good. Further, the camera 1 described in the present embodiment may be any of a silver halide camera, a digital camera and a video camera. Furthermore, the time based on the standard time radio wave in the present embodiment does not prevent the time and date information including the date in addition to the time.

[0022]

As described in detail above, according to the present invention, it is possible to prevent the time from being corrected to a time different from the local time.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a camera according to an embodiment.

FIG. 2 is a flowchart showing a process of the camera 1 shown in FIG.

[Explanation of symbols]

1 ... Camera, 30 ... Mode SW, 40 ... Antenna, 50
… Radio clock receiver circuit.

Continued front page    (72) Inventor Yoshihiro Ito             3-11-46 Izumi, Asaka-shi, Saitama Prefecture             Shin Film Co., Ltd. F-term (reference) 2F002 AA00 FA16 GA09                 2H103 AA11 ZA33

Claims (3)

[Claims] 1. A radio-controlled timepiece device that receives a standard time radio wave indicating a standard time and corrects the display time is provided with a correction prohibition mode that prohibits the correction of the display time by the standard time radio wave. Radio clock device. 2. The radio-controlled timepiece device according to claim 1, further comprising operation means for setting the correction prohibition mode. 3. The radio-controlled timepiece device according to claim 1, wherein the radio-controlled timepiece device is built in a camera.