JP2000209687A - Wireless microphone system, wireless speaker system and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To replace a battery at a proper time by receiving a transmitted voice signal and sensed voltage information and displaying voltage information on the basis of the received voltage information so as to simply and accurately predict the time the battery is usable. SOLUTION: A transmitter side, that is, a remote control section 1 is provided with a battery 11 as a power supply. Furthermore, a receiver side system main body section 2 is provided with a power supply section and this power supply section applies a voltage to each block of the system main body section 2. A key operation section 15 provided to the remote control section 1 is equipped with operation buttons such as 'play', 'stop' in the case of a VTR, far example, and contacts 15A-15F of a cross point switch of a key scan system are arranged corresponding to each operation button. Furthermore, voltage information of the battery 11 of the remote operation section 1 is set like 'voltage 1...-'voltage 5', for example, corresponding to each level in advance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system suitable for use in a remote control unit such as a remote commander, a wireless microphone, a wireless speaker, an IC memory card, and various other electronic devices using batteries. , Especially with a remote control unit with a built-in battery as a power supply,
Information on the battery voltage is displayed at a remote location other than the location, for example, at the receiving side of the system main body, so that the remaining usable time of the battery of the transmitting device can be predicted.

[0002]

2. Description of the Related Art Conventionally, in remote commanders, L
A battery life display function using an ED or the like is provided. However, this conventional battery life display function usually has one LE
Since the display format is D, it is difficult to predict how much battery life will be expected in the future with only one display.

[0003] Further, among wireless microphones and the like, there is no microphone having a function of displaying battery life in the microphone itself. Similarly, an IC memory card with a built-in lithium battery does not have a battery life display function on the card itself.

[0004]

The present invention solves these inconveniences in the conventional various devices, and displays the battery voltage to determine how much more can be used.
It is an object of the present invention to provide a system and a device for making it possible to easily and accurately predict the battery and to replace the battery at an appropriate time.

[0005]

According to the present invention, firstly,
A battery, detecting means for detecting voltage information of the battery, transmitting means for transmitting an audio signal in response to operation of the operating means, and transmitting voltage information detected by the detecting means, and transmitting from the transmitting means The wireless microphone system includes a receiving unit that receives the received audio signal and the voltage information, and a display unit that displays the voltage information based on the voltage information received by the receiving unit.

Second, a battery, detecting means for detecting the voltage information of the battery, transmitting means for transmitting the voltage information detected by the detecting means, and receiving an audio signal transmitted from the system body. A wireless speaker unit that outputs a voice signal received by the receiving unit, a receiving unit that receives voltage information transmitted from a transmitting unit in the wireless speaker unit, and a receiving unit that receives the voltage information. And a display unit for displaying voltage information based on the voltage information.

Third, a memory card having memory means, a battery for supplying power to the memory means, an interface means for supplying an output signal from the memory means and a voltage of the battery, and the interface means And a display unit that displays voltage information based on the voltage detected by the detection unit. .

[0008]

In the case of a remote commander or a wireless microphone, it is difficult to display the battery life of these devices themselves by a bar graph or the like due to design restrictions. By displaying
It is possible to clearly display. That is, according to the present invention, in a wireless microphone or a wireless speaker in which a battery is built-in as an independent power source, information on a built-in battery voltage can be detected by a main body installed in a remote place. Is displayed.

As a display method, by displaying a bar graph or a voltage value itself, it is possible to immediately know how long the battery can be used. For example,
In the case of a wireless microphone or a wireless speaker system, the user usually operates while looking at the main body of the receiving side, so that the display of the voltage information by the system of the present invention indicates that the life of the battery is reduced. be able to.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a wireless system according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a functional block diagram showing an embodiment of a main part configuration of an electronic system to which the wireless system of the present invention is applied. In the figure, 1 is a remote control unit, 11 is a battery, and 12 is an A having a built-in constant voltage circuit.
/ D converter, 13 is a microcomputer of a remote operation unit, 13A is its CPU, 13B is ROM, 13C is RAM, 13D is a clock oscillator, 14 is a transmission unit, 15
Denotes a key operation unit, 15A to 15F denote key switch contacts, 2 denotes a receiving system main body, 21 denotes a receiving unit, and 2 denotes a receiving unit.
2 is a microcomputer of the main body, 22A is its CP
U and 22B are ROM, 22C is RAM, 22D is a clock oscillator, 23 is a voltage display unit, F is full, E is an empty display position, and 24A to 24F are LEDs.

In FIG. 1, a battery 11 as a power source is provided on the transmitting side shown on the left side, that is, on the remote control section 1, and the system body section 2 on the right receiving side is not shown. A power supply section is provided, and a voltage (for example, VC
C) is supplied. For example, in the case of a VTR device, the key operation unit 15 provided in the remote control unit 1 includes “play”,
Operation buttons such as “stop” are provided, and contacts 15A to 15F constituting a key scan type intersection switch are arranged corresponding to each operation button.

Next, a key group of the key operation unit 15 of the remote operation unit 1 and data transmitted by each key will be described. Here, the operation key group of the key operation unit 15 is 6
When the operation key is composed of
It is assumed that there are a total of six keys of "A", "U", "E", "O", and "F". The number of operation keys is 6
Not only the number but also a required number can be provided.

Then, each of these operation keys "A" to
“F” indicates each contact 1 of the key switch of the key operation unit 15.
5A to 15F are assumed to correspond to each other. Further, the voltage information of the battery 11 of the remote control unit 1 is set in advance, for example, as “voltage 1” to “voltage 5” corresponding to each level (described in detail in FIG. 3 described later). Do).

FIG. 2 is a time chart showing an example of transmission code data used in the system of the present invention. In the waveforms in the figure, a to a indicate the type of each key of the key operation unit 15, voltages 1 to 5 indicate voltage information, T0 indicates a time width of a start bit, and T1 to T4 indicate a time of a bit of each code. .

In the system of the present invention, the key operation unit 15
When any one of the operation keys "A" to "F" is pressed, the transmission code data of "A" to "F" shown in FIG. 2 is transmitted corresponding to the key. Each transmission code data includes a start bit having a time width T0 generated first,
It is composed of a binary code pulse that follows.

In the case of FIG. 2, since 11 types of code data are required, 4-bit data is used, and after the start bit T0, during the time T1 to T4,
4-bit data changed by “H” or “L” is added and encoded. For example, the code data of the operation key “A” is “0000”, and the code data of “A” is “100”.
The code data of “0” and “c” is “0100”, the code data of “d” is “1100”, the code data of “o” is “0010”, and the code data of “f” is “1010”.

Similarly, the voltage information of the battery 11 is as follows: code data of “voltage 1” is “0110”, and “voltage 2” is “1”.
“110”, “voltage 3” is “0001”, “voltage 4” is “1011”, and “voltage 5” is “0101”. In this way, the transmission code data is transmitted by the start bit T0,
It is coded as 4-bit data following it,
The corresponding code data is transmitted from the transmission section 14 of the remote operation section 1 of FIG. 1 to the system body section 2 on the receiving side.

Next, a case of a dry battery will be described as an example of the voltage information. FIG. 3 shows two 1.
3 shows a voltage curve when 5 V dry batteries are connected in series.
In the figure, the horizontal axis indicates time, the vertical axis indicates dry cell voltage on the left side, and the voltage level on the right side.

As shown in FIG. 3, in the case of a 1.5 V battery, the cut-off voltage is about 0.9 V, so that two 1.
In the case of a 5V dry battery, 0.9 × 2 = 1.8V.
Therefore, the maximum voltage from 3 V to around 1.8 V is divided into five equal parts, and the voltage codes shown in FIG. It is determined as shown in.

More specifically, 2.8 V or more is set as "voltage 1" and converted into code data of "0110". Next, the voltage below 2.8V to 2.6V or more is referred to as "voltage 2".
Is assigned as voltage code data “1110”,
Similarly, a voltage of less than 2.6 V to 2.4 V or more is referred to as “voltage 3”, a voltage of less than 2.4 V to 2.2 V or more is referred to as “voltage 4”, and a voltage of less than 2.2 V is referred to as “voltage 3”. As “5”, “0101” of the voltage code data of FIG. 2 is assigned in advance.

Thus, the voltage code data shown in FIG. 2 is determined. Then, the battery 11 of the remote control unit 1
When the voltage becomes, for example, 2.8V, the code data of "voltage 1" is transmitted, and when it becomes 2.6V, the code data of "voltage 2" is transmitted.

The above is the description of the configuration of the remote control unit 1 in the wireless system of the present invention and the transmission code data to be used. A voltage display unit 23 and six LEDs 24A respectively corresponding to the six operation keys “A” to “F” on the remote operation unit 1 side are provided on the system body unit 2 on the reception side.
To 24F.

The voltage display unit 23 is a single display screen in FIG. 1 and is located at a corresponding position between the full F and the empty E, for example, similarly to the display of the current amount of gasoline in a car. , The format of displaying the voltage of the analysis result. In a system provided with a display unit, such as some high-end models, the display unit can be used, and in that case, a separate voltage display unit 23 is not particularly necessary. The six LEDs 24A to 24F correspond to the contacts 15A to 15F of the key switches provided on the key operation unit 15 of the remote operation unit 1, respectively.

In this embodiment, the operation key "A" of the key operation unit 15 corresponds to the contact 15A, the operation key "A" corresponds to the contact 15B,..., The operation key "F" corresponds to the contact 15F. are doing. Therefore, on the receiving side, when the transmission code data "A" shown in FIG. 3 is received, the LED 24A is turned on. When the data "A" is received, the LED 24B is turned on. When the data "F" is received, the LED 24F is turned on. It is lit.

The above is the outline of the configuration of the system body 2 on the receiving side, the voltage display, and the lighting operation of the LEDs 24A to 24F corresponding to the operation commands in the wireless system of the present invention. Next, the operation of the wireless system of the present invention will be described.

In this embodiment, every time any one of the operation keys is pressed on the key operation unit 15 of the remote operation unit 1, voltage information is transmitted. Before performing the function, the voltage information is transmitted first. When an arbitrary operation key, for example, the key "A" is pressed by the user, the contact 15A of the corresponding key switch operates, and an output signal is generated and transmitted to the microcomputer 13.

Based on this signal, the microcomputer 13 detects that the operation key "A" is pressed in an interrupt flow, and the clock oscillator 13D in the microcomputer 13 starts oscillating. Microcomputer 13
First detects the voltage of the battery 11 input to the A / D converter 12 with a built-in constant voltage circuit, and as shown in FIG.
(Corresponding data of “voltage 5”), and
Is transmitted to the system body 2 on the receiving side via the.

The output of the A / D converter 12 with the built-in constant voltage circuit does not change even if the voltage (VDD) of the battery 11 fluctuates. Next, the microcomputer 13 transmits the original transmission purpose code, that is, the code data of “A” assigned to the operation key “A” (the start bit in FIG. 3 and the 4-bit “0000” data). Send.

In the system main unit 2 on the receiving side, the receiving unit 2
1 receives the transmitted code data, the microcomputer 22 of the main body analyzes the code data of the voltage received first, and transmits the analysis result data to the voltage display unit 23. The microcomputer 22 similarly analyzes the code data sent after the voltage information, that is, the original transmission code data of the operation key "A", and, based on the analysis result data, the six LEDs 24A to 2A.
The corresponding LED in 4F is selected and turned on.

When the operation key "A" is pressed as in the previous example, the contact 15A corresponding to the operation key "A" is activated, and the transmission code data of "A" in FIG. 3 is received. You.
As a result, the output of the LED 24A corresponding to this data becomes "L", the LED 24A is turned on, and the operation command actually instructed is displayed.

Such an operation is performed while the operation key "A" is being pressed on the transmission side (contact 15A of the key switch).
Is ON)). Therefore, the voltage information of the remote operation unit 1 having an independent power supply is displayed on the voltage display unit 23 of the system body unit 2 on the receiving side. Next, the operation on the transmitting side will be described by a flow.

FIG. 4 is a flowchart showing a flow of main processing when the operation key is pressed on the remote control unit 1 side in the wireless system of the present invention. In the figure,
S1 to S11 indicate steps.

In step S1, the remote control unit 1
It waits until one key on the key operation unit 15 is pressed. When the microcomputer 13 knows that the key has been pressed by an interrupt, it oscillates the clock oscillator 13D to start the operation, and compares the voltage input to the A / D converter 12.

At step S2, it is determined whether or not the voltage input to the A / D converter 12 is 2.8 V or more.
If it is 2.8 V or more, the process proceeds to the next step S3, and the code of voltage 1 is transmitted. Further, as a result of the determination in step S2, the voltage input to the A / D converter 12 becomes 2.8.
If not, go to step S4.

In step S4, it is determined whether or not the voltage is equal to or higher than 2.6V. If the voltage is equal to or higher than 2.6V, the process proceeds to the next step S5, and the code of voltage 2 is transmitted. Step S4
If it is not 2.6 V or more as a result of the determination at step S6, the process proceeds to step S6.

In step S6, it is determined whether or not the voltage is 2.4 V or more. If the voltage is 2.4 V or more, the process proceeds to the next step S7, and the code of voltage 3 is transmitted. Step S6
If it is not 2.4 V or more as a result of the determination made in step 2, the process proceeds to step S8.

Similarly, in step S8, the voltage is 2.2 V
It is determined whether or not this is the case. If it is 2.2 V or more, the process proceeds to the next step S9, the code of the voltage 4 is transmitted, and the process proceeds to step S11. 1. The result determined in step S8.
If not, the process proceeds to step S10, and the voltage 5
Submit the code.

If the result of determination in step S8 is not 2.2 V or more, a code of voltage 5 is transmitted in step S10, and the flow advances to the next step S11. Step S11
The code originally assigned to the operation key (each contact 15
A to 15F).

The above steps S1 to S11 are repeated while one key on the key operation unit 15 is being pressed. The system body 2 on the receiving side analyzes the transmitted code data and displays the voltage information on the voltage display 2.
In the case of the operation command which is the original purpose, that is, the code data of the operation keys "A" to "K", the corresponding LEDs 24A to 24F are turned on, respectively. Therefore, the description by the flow is omitted.

The above is the description of the wireless system of the present invention. In a system using a remote control unit, voltage information of a remote operation unit having an independent power source (battery 11) can be displayed on a reception side. Thus, it is possible to know the remaining life of the battery, thereby preventing an erroneous operation instruction due to a voltage drop or the like. But,
The present invention may be modified as follows, and the present invention includes all the following cases.

In this embodiment, the voltage data is transmitted each time the operation key is pressed.
For example, the transmission may be performed only when the voltage changes. As the voltage display section on the receiving side, an FL tube, a liquid crystal display, an LED, a CRT display, and other known display devices can be freely combined and used.

Next, another embodiment of the present invention will be described. The previous embodiment is a case where the transmitting side having an independent power source is a remote commander, but the second embodiment is characterized in that it is applied to a wireless microphone. First, the case of a wireless microphone will be described.

Referring to FIG. 1, the remote control unit 1
Will be added to the wireless microphone. Further, the configuration of the system main unit 2 is added to the receiving-side system. The operation is the same as in the above-described embodiment.

Next, in the case of a wireless speaker,
The configuration of the remote operation unit 1 in FIG. 1 is added to a wireless speaker, and the configuration of the system main unit 2 is added to a system on the receiving side. Its operation is based on the wireless
Similar to a microphone.

In the case of the wireless microphone or the wireless speaker, voltage data may be transmitted when the system or the microphone is switched on, or the voltage may be transmitted once every predetermined time or when the voltage is changed. It may be transmitted only when it changes. In each of the above embodiments, the system main body unit displaying the voltage information, the remote control unit having an independent power supply, the wireless microphone, the wireless speaker, and the like are connected in a wireless manner. There is a feature in the point.

Next, still another embodiment will be described. In this embodiment, the basic configuration and operation are the same as those of the above wireless system.

In this embodiment, a unit having an independent power supply and a main unit having a display device are connected by using a connecting device such as a cord instead of wireless (wireless connection). It is characterized in that voltage information data is transferred. Here, a case of an electronic device using a detachable IC card, for example, an electronic system notebook will be described.

FIG. 5 is a functional block diagram for explaining the main configuration of the electronic apparatus according to the present invention. In the figure, 3 is an IC card such as a RAM expansion card, 31 is its RAM, 32 is a lithium battery, 4 is a main body such as an electronic system notebook or a pocket computer, 41 is its A / D converter, 42 is a microcomputer, 43 Indicates a display device.

FIG. 5 shows a case where the present invention is applied to an electronic organizer. As an information storage means capable of recording / reproducing information, an independent power supply of a lithium battery 32 is provided on the side of the expandable RAM card 3, and the voltage of this battery is
The data is transmitted to the main body 4 via the connector and displayed on the display device 43, so that the user can confirm it. In this case, processes such as battery voltage detection and coding are executed under the control of the microcomputer 42 of the main body 4.

[0051]

According to the wireless system of the first and second aspects, the voltage information of the battery incorporated in the remote controller is encoded and transmitted, and the voltage information is displayed on the voltage information display means of the system main body. I have to. Therefore, the user can accurately know how much the battery of the remote control unit can be used, and can replace the battery at an appropriate time.

In the electronic device according to the third aspect, in a system using information storage means such as an IC card, it is possible to know the voltage information of the battery, and the same effect as the wireless system according to the first aspect is obtained. .

[0053]

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing an embodiment of a main configuration of an electronic system to which a wireless system according to the present invention is added.

FIG. 2 is a time chart showing an example of transmission code data used in the wireless system of the present invention.

FIG. 3 shows a voltage curve when two 1.5V batteries are connected in series at a constant load.

FIG. 4 is a flowchart showing a main processing flow when an operation key is pressed on the remote operation unit 1 side in the wireless system of the present invention.

FIG. 5 is a functional block diagram illustrating a main part configuration of the electronic apparatus according to the invention.

[Explanation of symbols]

1 Remote control unit, 11 batteries, 12 A with built-in constant voltage circuit
/ D converter 13 Microcomputer of remote control unit 13A CPU, 13B ROM, 13C RAM 13D clock oscillator, 14 transmission unit 15 Key operation unit, 15A to 15F Contact points of key switch 2 System body unit on receiving side, 21 Receiving unit 22 Microcomputer of main unit, 22A CPU, 22B ROM, 22C RAM, 22D clock oscillator, 23 voltage display unit, 24A to 24F LED

Claims (3)

[Claims] 1. A battery, a detecting means for detecting voltage information of the battery, and an audio signal transmitted in response to an operation of an operating means,
Transmitting means for transmitting the voltage information detected by the detecting means; receiving means for receiving the audio signal and the voltage information transmitted from the transmitting means; and voltage information based on the voltage information received by the receiving means. A wireless microphone system comprising display means for displaying. 2. A battery, detecting means for detecting voltage information of the battery, transmitting means for transmitting the voltage information detected by the detecting means, and receiving means for receiving an audio signal transmitted from the system main body. A wireless speaker unit that outputs an audio signal received by the receiving unit; a receiving unit that receives voltage information transmitted from a transmitting unit in the wireless speaker unit; and a voltage information received by the receiving unit. And a display means for displaying voltage information based on the system. 3. A memory card comprising: a memory means; a battery for supplying power to the memory means; an interface means for supplying an output signal from the memory means and a voltage of the battery; An electronic apparatus comprising: a detection unit configured to detect a voltage of a battery supplied by the system; and a display unit configured to display voltage information based on the voltage detected by the detection unit.