JP2004045765A - Camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera which can back up a clocking circuit section without providing a camera body with an auxiliary battery. <P>SOLUTION: The camera 1 has a remote controller 20 attachable and detachable to and from the camera body 10 and is remote-controlled by the remote controller 20. The remote controller 20 performs remote-controlling by being supplied with electricity by a battery 204 disposed therein. The camera body 10 is provided with an electric circuit section 102b including a clocking circuit 102 for measuring the data in photographing and a main battery 105 for supplying electric power to the electric circuit section 102. The battery 204 supplies electricity to the clocking circuit 102b when the main battery 105 is removed from the camera body 10 while the remote controller 20 is attached to the camera body 10. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a camera having timekeeping means for measuring the date and time when photographing.
[0002]
[Prior art]
Some cameras have a so-called date function that captures the date and time of shooting on a film. The camera having this date function has a date imprinting unit for imprinting the date and time at the time of photographing, and a timing circuit unit as a time measuring unit for measuring the date and time. Normally, power is supplied from the main battery to the clock circuit, but when the main battery is replaced, power is temporarily not supplied from the main battery, and the clock function of the clock circuit stops. When the timing function of the timing circuit unit is stopped, the date and time measured by the timing circuit unit is initialized, and a deviation occurs from the actual date and time. In order to eliminate this discrepancy, it is necessary for the camera user to correct the date and time setting of the timing circuit unit, but the date and time setting correction operation may be troublesome.
[0003]
Therefore, as described in JP-A-7-28159 and JP-A-8-286258, when the main battery is removed for battery replacement or the like, the auxiliary battery supplies power instead of the main battery. There is a camera.
[0004]
[Problems to be solved by the invention]
In this way, a camera having an auxiliary battery in the camera body has an advantage that a battery having a smaller capacity than that provided in order to constantly supply power to the timing circuit unit may be used, but a battery other than the main battery is provided. There is no change, and there is a demand for a camera that can back up the timing circuit more efficiently.
[0005]
Therefore, an object of the present invention is to provide a camera capable of backing up the timing circuit unit without providing an auxiliary battery in the camera body.
[0006]
[Means for Solving the Problems]
The camera of the present invention includes a remote operation device that can be attached to and detached from the main body, and can be remotely operated by the remote operation device. The remote operation device is powered by power supply means provided therein. The remote control is possible, and the main body includes an electric circuit unit including a time measuring means for measuring the date and time at the time of shooting, and a main battery for supplying electric power to the electric circuit unit, and the remote control device includes When the main battery is removed from the main body while being attached to the main body, the power supply means supplies power to the timing means.
[0007]
According to the camera of the present invention, when the main battery is removed, power is supplied from the remote control device attached to the main body to the time measuring means. Therefore, even if the power supply from the main battery to the time measuring means is stopped, the time measuring means can be used. Can be backed up.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The knowledge of the present invention can be easily understood by considering the following detailed description with reference to the accompanying drawings shown for illustration only. Subsequently, embodiments of the present invention will be described with reference to the accompanying drawings. Where possible, the same parts are denoted by the same reference numerals, and redundant description is omitted.
[0009]
The camera 1 of this embodiment is demonstrated using FIG. The camera 1 includes a photographing lens 110, a flash 111, a release button 112, a display unit (not shown), and a viewfinder 113. The photographing lens 110, the flash 111, and the viewfinder 113 are provided on the front surface 114 of the camera 1, and the release button 112 and a display unit (not shown) are provided on the top surface of the camera 1. A user who uses the camera 1 holds the camera 1 so that the photographing lens 110 faces the subject when photographing, confirms the subject through the viewfinder 113, and presses the release button 112 when the composition is determined. When the release button 112 is pressed, the camera 1 performs focusing, performs various settings necessary for shooting such as exposure, and executes shooting. When the amount of light is insufficient at the time of photographing, the amount of light that is insufficient due to the flash 111 is compensated. When photographing is performed, the light that has passed through the photographing lens 110 reaches the silver salt film, the silver salt film is exposed, and the subject is imaged on the silver salt film.
[0010]
The camera 1 also has a date function that can capture the date and time at the time of shooting on the film. This date function is realized by a CPU, a reference clock generation circuit, a date imprinting unit and the like incorporated in the camera 1. The reference clock generation circuit generates a reference clock signal, and is composed of, for example, a crystal oscillator. The CPU includes a time measuring circuit as time measuring means for measuring time according to the clock signal. The date imprinting unit is a part for imprinting the display time when the camera 1 images a subject.
[0011]
The camera 1 further includes a remote control (remote control device) 20 that can be attached to and detached from the camera body 10. The remote controller 20 is attached to the attachment portion 101 of the camera body 10 and functions as a grip portion of the camera 1. When the remote controller 20 is used as a remote control device, the remote controller 20 is detached from the mounting unit 101 and a signal is transmitted by pressing the remote control switch toward the light receiving unit 115 of the camera body 10. The camera body 10 converts the signal received by the light receiving unit 115. In response, the same photographing operation as that when the release button 112 is pressed is performed.
[0012]
FIG. 2 shows a circuit configuration diagram of the camera 1 of the present embodiment. A main battery 105 is provided on the camera body 10 side of the camera 1 and supplies power to the control circuit 102a and the time measuring circuit (time measuring means) 102b of the electric circuit unit 102. The control circuit 102a is a part that controls the operation of each part when the camera 1 performs a photographing operation, and the time measuring circuit 102b is a part that acquires the current time in order to perform a date function. A diode 104 is disposed between the control circuit 102a and the timing circuit 102b.
[0013]
A battery (power supply means) 204 is provided on the remote controller 20 side of the camera 1, and power is supplied to the control circuit 202 when the switch 201 is closed when the remote controller 20 is used. The control circuit 202 is configured to cause the infrared light emitting diode 203 to emit light in response to power supply from the battery 204 and to transmit a predetermined signal to the light receiving unit 115 of the camera body 10. Further, a diode 206 is disposed on the electrical contact side with the camera body 10 rather than the battery 204 of the remote controller 20.
[0014]
When the remote controller 20 is attached to the camera body 10, the electrical circuit of the remote controller 20 and the electrical circuit of the camera body are electrically connected via an electrical contact (not shown). With this configuration, when the main battery 105 of the camera body 10 is removed, power is supplied from the battery 204 of the remote controller 20 to the timer circuit 102b of the camera body 10.
[0015]
FIG. 3 shows a circuit configuration diagram which is a modified example of the present embodiment. In the example shown in FIG. 3, the diode 206 in the circuit configuration diagram of FIG. 2 is removed, and the battery 204 is replaced with a capacitor (power supply means) 205. Capacitor 205 preferably has a high capacity and is preferably an electric double layer capacitor. Further, a secondary battery may be used instead of the capacitor 205. According to the example shown in FIG. 3, when the remote controller 20 is attached to the camera body 10, the capacitor 205 is supplied with power from the main battery 105 of the camera body 10. When the switch 201 is closed when the remote controller 20 is detached and used, power is supplied from the capacitor 205 to the control circuit 202. The control circuit 202 causes the infrared light emitting diode 203 to emit light in response to the power supply from the capacitor 205, and transmits a predetermined signal to the light receiving unit 115 of the camera body 10.
[0016]
As already described, when the remote controller 20 is attached to the camera body 10, the electrical circuit of the remote controller 20 and the electrical circuit of the camera body are electrically connected via an electrical contact (not shown). Therefore, when the main battery 105 of the camera body 10 is removed, power is supplied from the capacitor 205 of the remote controller 20 to the timer circuit 102b of the camera body 10.
[0017]
In this embodiment, the clock circuit 102b is supplied with power from the battery 204 or the capacitor 205 provided in the remote controller 20, but even a device other than the remote controller can be attached to and detached from the camera body 10, 10 can be configured as shown in this embodiment.
[0018]
Furthermore, in the camera 1 of the present embodiment, the main battery 105 may not be removed unless the remote controller 20 is attached. Although there are various means for achieving such a configuration, as an example, the lid of the battery storage chamber for storing the main battery 105 can be opened when the remote control 20 is mounted. There is a mode in which it cannot be opened when 20 is not attached.
[0019]
The operation and effect of this embodiment will be described. When the main battery 105 on the camera body 10 side is removed, power is supplied from the battery 204 (or the capacitor 205) of the remote controller 20 attached to the camera body 10 to the timing circuit 102b, so the main battery 105 to the timing circuit 102b. Even if the power supply is stopped, the timing circuit 102b can be backed up. In addition, as a camera, it is applicable regardless of a kind, such as a silver salt camera, a digital camera, and a video camera.
[0020]
【The invention's effect】
Since the camera of the present invention supplies power to the timing means from the remote control device attached to the main body when the main battery is removed, the timing means is backed up even if the power supply from the main battery to the timing means is stopped. be able to. Therefore, it is possible to provide a camera capable of backing up the clock circuit unit without providing an auxiliary battery in the camera body, which is an object of the present invention.
[Brief description of the drawings]
FIG. 1 is an external view of a camera according to an embodiment of the present invention.
FIG. 2 is a circuit configuration diagram of a camera according to an embodiment of the present invention.
FIG. 3 is a circuit configuration diagram of a camera according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Camera, 10 ... Camera body, 20 ... Remote control, 101 ... Mounting part, 102 ... Electric circuit part, 102a ... Control circuit, 102b ... Timing circuit, 104 ... Diode, 105 ... Main battery, 111 ... Flash, 112 ... Release Buttons 113, finder, 114, front surface, 115, light receiving unit, 110, photographing lens, 201, switch, 202, control circuit, 203, infrared light emitting diode, 204, battery, 205, capacitor, 206, diode.

Claims (1)

In a camera that includes a remote control device that can be attached to and detached from the main body and can be remotely controlled by the remote control device,
The remote operation device can be remotely operated by being powered by a power supply means provided therein,
The main body includes an electric circuit unit including a time measuring unit for measuring the date and time at the time of shooting, and a main battery for supplying power to the electric circuit unit,
The camera, wherein the power supply means supplies power to the timing means when the main battery is removed from the main body with the remote control device mounted on the main body.

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