JPH01206845A - Power device for electronic equipment - Google Patents

Abstract

PURPOSE:To form simple and low-cost constitution by making the shapes of electrodes for a first power supply and a second power supply differ and providing a discriminating means discriminating the difference of the shapes of electrodes for each power supply to a power fitting section. CONSTITUTION:Connecting pieces 12b and 12c independently form a switch S apart from a circuit related to power supply. When a battery 1 is mounted, the switch S by the connecting pieces 12b, 12c is opened. When an AC power adapter 11 is provided, on the other hand, the connecting pieces 12b, 12c are conducted by an electrode 11b, and the switch S is closed. Accordingly, the case when the battery 1 is fitted to a battery housing section and the case when the AC power adaptor 11 is mounted are discriminated electrically by turning the switch S ON-OFF.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a power supply device for electronic equipment, and more specifically to a power supply device suitable for use in electronic equipment that can be driven by multiple types of power sources including batteries. be.

(Prior Art) Conventionally, electronic devices have been powered by a plurality of different types of power sources, including batteries, household power lines (hereinafter referred to as AC power sources), and automobile power sources. Furthermore, in order to improve operability, many different types of power supplies and power adapters are designed to have the same shape as batteries and can be installed in battery compartments, and this trend is particularly strong in portable electronic devices.

In devices that use multiple types of FL sources, the power supplies installed are different because the characteristics, capacities, etc. of the power sources are different, and to make the user aware of which power source is being used. There was a device equipped with a means of identifying what it was.

Figures 7 and 8 show conventional batteries and AC1ff, respectively.
FIG. 2 is a perspective view showing an example of a power supply adapter, both of which are configured so that they can be installed in the battery compartment of an electronic device and can supply power using the power supply contacts on the electronic device body side in common. Also, Figure 9 shows the state when the battery is installed at 1θ.
The figure is AC'itl! Each figure shows the state in which the adapter is attached.

In each country, l is a battery, la and lb are live electrodes and -electrodes arranged on the battery, respectively, 2 is an AC power adapter as another power supply device, 2a and 2b are live electrodes, -electrodes, and 3, respectively. is a power plug, 2c is a protrusion for identifying the battery 1, 4 is a battery storage part formed in the electronic device,
5a is provided in the battery storage section 4 and is connected to the battery l or AC'i.
1i is a + side connection piece connected to the 10th electrode 1a or 2a of the source adapter 2, 5b is a one side connection piece that is connected to the battery 1 or one electrode 1b or 2b of the AC power adapter 2, respectively, 6 is the battery This is a microswitch arranged in the storage section 4 for detecting the presence or absence of the convex portion 2C and determining the type of the loaded power supply device.

In this configuration, when the battery l is actually inserted into the battery compartment, as is clear from FIG. 9, the microswitch 6 is not turned on and is turned off because the battery has no protrusion. Retained. In addition, when the ACC power supply abutment 2 is attached, as shown in Fig. 1θ, the convex portion 2C
The operator of the microswitch 6 is pressed and the switch is turned on.

In this way, the micro switch 6 is turned on.

By turning off, it becomes possible to identify the type of power supply installed in the battery storage section 4, such as whether it is a power supply, a battery, or an AC'1ttf (adapter).

(Problems to be Solved by the Invention) However, according to the above-mentioned conventional example, in order to identify the type of power source, for example, the shape of the power supply device other than the battery is made different from the shape of the battery. However, it is necessary to take up a large space for the battery compartment inside the device, which has the drawback of making it difficult to miniaturize the electronic device. In addition, it is necessary to use an expensive electric component such as a microswitch as the first stage of detection, and the position and holding structure of the microswitch must be strictly controlled to ensure that the microswitch turns on and off. This has the disadvantage that the configuration of electronic equipment is complicated and expensive.

(Means for Solving Interval VIX) The present invention has been made for the purpose of solving the problems of the conventional example described in h. using a first power source that supplies power from the power supply unit 77 and a second power source that is different from the first power source that is attached to the power supply unit 77 and that supplies power from the electrical contacts; the first power source and the second power source;
The power supplies have different shapes of electrodes that come into contact with the electrical contacts, and the power supply mounting section is provided with an identification means for determining the difference in the shape of the electrodes of each power supply and identifying the power supply installed, To provide a power supply device that has a simple and inexpensive configuration and is highly reliable.

(Embodiments) Hereinafter, embodiments of the power supply device for electronic equipment according to the present invention will be described in detail.

This embodiment shows a case where the present invention is used to identify a battery and an AC power adapter. Fig. 1 is a perspective view of an AC power adapter, and Figs. 2 and 3 show an ACC power adapter battery and an electronic device. FIG. 7 is a perspective view showing a state in which the device is installed in the battery storage portion of the device, and the same components as in the conventional example shown in FIGS. 7171 to 1θ will be described using the same reference numerals.

In each country, IO is a battery storage part formed in an electronic device, 11 is an AC power adapter body, and a power plug 3 is arranged. A + electrode 11a and a − electrode 11b are arranged on the upper surface of the battery l corresponding to the + electrode 1a and the − electrode 1b, respectively, and one of the electrodes, for example, the one electrode 11b
It is formed wider in the width direction than the electrode 1b of the battery 1.

On the other hand, when a battery l or an AC power adapter 11 is installed in the battery compartment 10 of an electronic device, the ten electrodes la of the battery l or the AC power adapter 1
A positive side connection piece 12a connected to the tenth electrode 11a of the battery 1, and a one side connection piece 12b similarly connected to the one electrode 1b of the battery l or the one electrode 11b of the AC power adapter 11 are arranged as power supply terminals, respectively. In addition, when the battery 1 is installed, it does not contact any electrode as shown in Figure 3, and when the AC power adapter 1 is installed, it is formed wide as shown in Figure 2. An identification connecting piece 12c is also arranged on the one electrode 11b and connected to the one side connecting piece 12b. These connecting pieces 12b and 12C form a switch S independently from the circuit related to power supply, and when a battery l is installed, the connecting pieces 12a and 12b for power supply are connected to each other. The identification connecting pieces 12c are connected to the corresponding electrodes 1a and 1b, or are only in contact with the surface of the electrode, and are not in contact with any of the electrodes, and the switches S by the connecting pieces 12b and 12c are opened. .

On the other hand, when the AC power adapter II is attached, the connection pieces 12a and 12b for power supply are connected to the electrodes 11 and 11, respectively.
a, llb to form a power supply path, and the identification connecting piece 12C is connected to the electrode 11b through the connecting pieces 12b, 12c or the electrode 11b,
Switch S is closed. In this way, switch S is turned on when battery l is installed in the battery compartment and when AC power adapter it is installed.

It can be electrically identified by turning it off.

[In a series of embodiments, one electrode 1 of the AC power adapter 11
Wider connection piece 1b and connection piece 12b and power supply identification connection piece 1
2c is electrically conductive, but the electrode 11a of the AC power adapter 11 may be made wider to electrically connect the connecting piece 12a and the power supply identification connecting piece 12c.

Next, the identification information of the identification f stage of the power supply described in L is actually '+1
An example in which the method is used to control an i-+- device will be explained.

Figure 4 shows the recording of image or audio information on concentric tracks on a rotating magnetic disk.
FIG. 2 is a block diagram when the present invention is applied to a t, I-camera.

This type of electronic camera is designed to be portable, so being small and compact is an extremely important factor. Therefore, especially when recording or photographing, 1 [Ike] is an essential condition. In addition, a +1) raw mode for reproducing images recorded on the recording medium 12, an erase mode for erasing tracks on which unnecessary recorded information is recorded, and making the recording 11 degrees circular, etc. are also required.

However, when using a battery as a power source, it goes without saying that you must always consider the battery's duration, or if the battery runs out during shooting, the shooting operation will no longer be possible! This can lead to huge problems such as missing opportunities for shadows and not being able to record properly, so when using batteries, it is best to find ways to minimize battery consumption. In the case of this embodiment, in the operation mode of the electronic camera described in L, the erase mode for erasing the recorded information of the recording track requires extremely large radio waves, so the power consumption is large, and the erasing operation is performed when powered by battery. This is undesirable, and the erase operation is rarely performed outdoors while shooting.[1]
If it is determined that the battery is being used by the switch S, which is the power supply identification means mentioned above, the erasing operation itself is disabled, and the electronic camera is connected to a home AC'p source using an AC'ItcIQ adapter. The erasing operation is set to 1'T tF when power is being supplied from the source and there is no need to take into account mental energy consumption.

In the figure, D is a magnetic disk as a recording medium, 2
0 is a motor for rotating the disk, 21 is a motor servo circuit for controlling the rotation of the motor 20, 22 is a magnetic head that moves in the radial direction of the rotating magnetic disk D to perform recording and reproduction on concentric tracks, and 23 is a head. a head moving mechanism 24 for moving 22 to a desired position on the magnetic disk Dh;
25 is a camera section consisting of an optical system including an IM shadow lens, an aperture, a shutter, an image sensor that converts image information photographed by the optical system into an electrical signal, etc.; A recording signal processing circuit 26 performs processing such as FM modulation on the image information signal output from the camera unit 24 to convert it into a signal suitable for recording on a magnetic disk, and supplies the signal to the magnetic head 22, which will be described later. The operation is controlled by the control signal C2 from the system control circuit, and the reproduced image signal reproduced from the tracks of the magnetic disks D and L by the magnetic head 22 is subjected to predetermined signal processing and reconverted to the original video signal. , a reproduction layer-) processing circuit which converts and outputs a signal suitable for supplying to a monitor (not shown), and 27 is controlled in operation by a control signal C:I from a system control circuit, which will be described later, and applies an erase current to the magnetic head 22. This is an erase current supply circuit for supplying. 28 is a recording signal processing circuit 25. Reproduction signal processing circuit 26. Erase current supply circuit 2
Control signal 1 from the system control circuit 7 will be described later.
) C4 is a mode changeover switch that changes according to each mode; 29 is a head moving mechanism 23. Motor servo circuit 21, recording signal processing circuit 2s, p5 raw signal processing circuit 26, erase current supply circuit 27. Camera section 24
．． The mote changeover switch 28τ is a system control circuit that comprehensively controls the device according to the mote. Further, 30 is an operation unit consisting of a plurality of operation buttons (not shown) that give commands to the system control circuit 29 according to various modes, and 31 is a display that displays information related to the control status of the device by the system control circuit 29 and various modes. and OUT are playback output terminals for outputting the playback signal output from the playback signal processing circuit 26 to the outside of the apparatus.

Further, in the middle of the line of the control signal C3 outputted from the system control circuit 29 and used to operate the erase upstream supply circuit 27, the above-mentioned switch S for mental image identification is arranged.

Therefore, when a desired mode is selected using the operating section 30, the system control circuit 29 controls the operation of each circuit and sets the corresponding mode. In addition, the movement of the magnetic head 22 and the rotation of the Ii1 disk are controlled in accordance with each operation mode, and at the same time, each control state is displayed on the display 3.
1 is displayed.

When the erase operation mode is set using the operation unit 30, the system control circuit 29 sends a control signal C.
4 is output and connected to the mode changeover switch 28 or the erase 'quasi-current supply circuit 27, or as described above, when it is attached to the AC power adapter 11 or the battery compartment IO and the switch S is closed. , the erase current supply circuit 27 is activated by the control signal +C1 being output from the system control circuit 29! The data is erased onto the magnetic head 22'
It is possible to erase the recorded information on the opposing track of the magnetic head 22 by supplying the i mini, but if the battery l is installed in the battery compartment 10 and the switch S is open, the system The control signal C3 is not supplied from the control circuit 29 to the erase current supply circuit 27, so the erase current supply circuit 27 does not operate, and the magnetic disk 1-
The recorded information will not be deleted.

By turning the switch S on or off, the display section 31 displays the type of power supply device currently installed in the battery storage section and the fact that erasing cannot be performed when the battery is in use.

Furthermore, according to the recording or 111 recording device described in 1-1, for ease of understanding, the operation of this is controlled by switching the control signal C3 applied from the system control circuit 29 to the erasing radio wave supply circuit 27; In actual circuit design, it is also easily possible to supply the state of the switch S to the system control circuit 29 to control the output of the control signal C3 itself.

No. 514. FIG. 6 shows another embodiment of the invention.

In each country, 40 is an AC power adapter, 40a is ten electrodes, 40b is one electrode, and 40c is one electrode 40b and conductive part 4.
A power source identification electrode connected via 0d, - electrode 40
It is formed on a different surface from b. Also, 41 is electron 41
The first base battery compartments 42a and 42b are power supply connecting pieces disposed within the battery compartments and connected to the electrodes 40a and 40b when the AC power adapter is attached.

Furthermore, 42c is a power source identification pole which constitutes the power source identification switch S together with the connecting piece 42b.

Therefore, as shown in FIG. 5, when the ACC power source is installed in the battery compartment 41 (the switch S consisting of the connecting pieces 42b and 42c is closed by the - electrode 40b and the power source identification electrode 40c, the ACC It is possible to detect that the power supply button is attached.Furthermore, when the battery 1 is attached to the battery compartment F81S41 as shown in FIG. As seen, the connecting pieces 42b and 420 are not electrically connected, the switch S is in an open state, and it is possible to identify that a battery is installed.

It goes without saying that the power supply identification electrode 40c may be set on the + side electrode 40a side, and furthermore, the identification electrode 40c may be set on the + side electrode 40a side.
The formation position is not limited to the L side or the side surface, but is not limited as long as it is electrically connected to one of the power supply electrodes.

Incidentally, according to the above-mentioned embodiments, the case where the battery and the AC power adapter are identified is not limited to the explanation IJ1, but is not limited to these combinations; It has a wide range of applications, including power sources, other batteries with different capacities, and large external batteries.

Furthermore, in the above embodiment, the case where two types of power supply devices are identified was explained, but by changing the number and formation position of the identification electrodes and connection pieces, it is possible to further identify three or more power supply devices. It's a matter of doing or going around.

(Effects of the Invention) As described above, according to the power supply device for electronic equipment of the present invention, the power source can be identified in an electronic equipment that can use a plurality of power sources including a battery and other power sources other than the battery, such as an AC power adapter. It is possible to realize a means for doing so with a simple configuration and at low cost, and by using the identification information for various controls, it is possible to provide highly reliable equipment. In addition, when configuring the means for identifying the power source, it does not require special space within the electronic device, and is effective in reducing the overall size of the device, making it extremely easy to separate the battery case and other power source cases of the ACC power supply button. Since similar shapes can be obtained, molds can be easily reused, which is also effective in reducing manufacturing costs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an AC power adapter according to a first embodiment of the present invention, FIG. 2 is a perspective view showing the ACC power adapter of FIG. 1 installed, and FIG. 3 is a perspective view of an AC power adapter according to a first embodiment of the present invention. FIG. 4 is a block diagram of a recording or reproducing device to which the power source identification device of the present invention is applied;
FIG. 5 is a perspective view of the attached state of the AC power adapter in the second embodiment of the present invention, FIG. 6 is a perspective view of the battery storage state in the 0'S2 embodiment of the present invention, and FIG. 7 is the conventional A perspective view of a battery in an electronic device, Figure 8 is a conventional AC
A perspective view of a power adapter. FIG. 9 is a perspective view showing a state in which a battery is attached to a conventional electronic device. FIG. 10 is a perspective view showing a state in which a conventional AC power adapter is attached to a conventional electronic device. be. ■...Battery Ia, Ib...Electrode ++, 40-...AC power adapter Ita, l
lb, 40a, 40b...-=power supply electrode 12a
, 12b, 42a, 42b ---Connection piece for power supply 120.42C--Connection piece for power supply identification 10.4
1...Battery compartment S...Power supply identification switch Patent applicant: Canon Co., Ltd. Figure 1 Figure 2 -■-' 12C -y-' 4- Port 2 85 Figure 421, +2 4.2), 42C 1111187 Figure q Figure S

Claims (3)

[Claims] (1) A first power supply that is attached to a power supply attachment part of an electronic device and supplies power from the electrical contacts of the power supply attachment part; and a first power supply that is attached to the power supply attachment part and supplies power from the electrical contacts of the power supply attachment part. A second power source different from the power source can be used,
The first power source and the second power source have different shapes of electrodes that come into contact with the electrical contacts, and the power source attachment section determines the difference in the shape of the electrodes of each power source and selects the attached power source. A power supply device for electronic equipment, characterized in that it is provided with an identification means for identification. (2) A power source for an electronic device according to claim (1), wherein the first power source is a battery, and the second power source is an external power source that supplies power from outside. Device. (3) In claim (2), the identification means has an electrical contact that constitutes a switch together with the electrical contact for power supply, and the switch is turned on or off depending on the shape of the attached electrode. A power supply device for an electronic device, characterized in that the power supply device is configured to identify the type of power supply when it is turned off.