JPH0256193A - Remote controller - Google Patents

Abstract

PURPOSE:To remarkably suppress the consumption of a battery by stopping the transmission of a command signal from an light emitting element for an approximately dead period after an equipment to be controlled receives the command signal. CONSTITUTION:When a channel up and down key is depressed as a key 2, the key 2 is continued to be pressed under the command of this mode, or since an action to switch the channel is decided at the interval of 0.5-0.7 second on a TV side 10, a command signal 31 is intermittently outputted. Namely, the output of a cancel interval signal generation circuit 23 is stopped its transmission for a specific interval. In this case, within 0.5-0.7 second of the dead period being a cancel time, the unnecessary consumption of a battery 9 can be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a remote controller suitable for use as an infrared remote controller or the like.

[Summary of the invention]

The present invention relates to a remote controller suitable for use in an infrared remote controller, etc. In a remote controller that transmits a command signal from a light-emitting element to a controlled device, the present invention has a substantially dead period after the controlled device receives the command signal. By stopping the transmission of command signals, unnecessary battery consumption is suppressed and the life of the battery is extended.

[Conventional technology]

Wireless remote controllers are known that use radio waves, ultrasonic waves, and infrared rays, but recent remote controls transmit command signals using on/off pulses of infrared rays.

Figure 4 shows the conventional infrared digital remote controller (
1) shows the system diagram.

In Fig. 4, a remote controller (11 is used to control power on/off, TV receiver channel up/down, volume up/down, or video tape recorder (VT)
R) has keys (2) for picture search, etc., and when these keys (2) are pressed, the key data for each key (2) is created in the key decoder (3), and the data encoder (4) in the next stage is generated. ) and the data code (4a) as shown in Figure 5B.
) is formed and supplied to the transformer (5), and the data code (4
a) modulates the carrier (6a) to form a command signal (5a) in units of one frame as shown in FIG. The signal is transmitted via infrared rays to a controlled device (10), for example, a television receiver. Note that (9) is a battery for driving each circuit of the remote controller (1).

In the controlled device (10) of the television receiver, a light receiving element (11) such as a photodiode receives the infrared rays of the command signal, amplifies it with an amplifier (12), and limits it with a limiter (13). , a wave detector (14) detects the waves, and a decoder (15) decodes the data. Decoder (15)
TV reception @! fi (10) Main body key (16)
The key human power from is input directly. Decoder (15
) according to the data decoded by the pulse generator (1
7), a flip-flop circuit (1B>), a digital-to-analog converter (19), etc. are operated to perform channel up/down, switch changeover, polygon amplifier down, etc.

As shown in FIG. 6, the above-mentioned remote controller (1) has become thinner and is now being made into a card, for example. In FIG. 6, the light emitting elements (81, etc.) are flattened, and the battery (9) uses one button-type battery.

[Problem to be solved by the invention]

Remote controller explained in the above conventional technology (1)
According to , each circuit (3) to (7) provided in the remote controller (1) can be made into a low power consumption circuit by converting it into an IC, but it is possible to make it a low power consumption circuit by turning on the LED of the light emitting element (8). In addition, since it consumes a considerable amount of power to emit infrared rays, a normal remote controller (LE
I) In order to drive the lighting, another battery is designed to be used, with a total of two batteries.

However, in a case where the number of batteries is 1 (card-type remote controller 11 that can only be used with I&I), it is necessary to reduce unnecessary consumption of the battery.

The present invention was made in view of the above-mentioned problems, and its purpose is to prolong the life of the battery and to provide a remote control that can operate with low power such as a solar battery.

(Means for Solving the Problems) As an example of the remote controller of the present invention is shown in FIG. 1, the remote controller ( 1
1, transmission of the command signal is stopped for approximately a dead period after the controlled device (10) receives the command signal.

[Effect]

According to the remote controller of the present invention, the light emitting element is controlled to be turned off using dead period data retrieved according to key operation data, and battery consumption is reduced because the light emitting element stops emitting light during the dead period of the controlled device. It can be reduced significantly.

〔Example〕

An embodiment of the infrared remote controller of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a system diagram showing an embodiment of the remote controller of the present invention, and parts corresponding to those in FIG. 4 are given the same reference numerals and redundant explanation will be omitted.

In FIG. 1, keys (2) are configured in a matrix, and a plurality of column lines are connected to a key scanning circuit (20) configured as an IC.
A plurality of row lines are connected to an IC-based key decoder (3) and data encoder (4). Key decoder (
3) and the outputs of the data encoder (4) are supplied to an IC-based data output circuit (21).

The key decoder, data encoder (3), (4), key scanning circuit (20), and output port ll8 (21) are controlled by a microcomputer (hereinafter referred to as CPU) (22).C)
) Ll (22) is a key decoder, data encoder (3
).

Based on the key data from (4), power 1 on”“
Off”, play, stop, channel up and down,
Command data such as poll up/down and picture search mode is supplied to the cancellation section call generation circuit (23). This cancellation interval signal generation circuit (23), the operation of which will be described later, generates cancellation time data determined in accordance with each mode such as the above-mentioned channel amplifier down that the controlled device (10) has. This is done so that the section is not output. This cancellation time is defined as when the controlled device (10) receives a predetermined command and immediately enters the operating state, or in some modes, when the operator presses a key in such a way that chattering occurs.
In order to cause a permanent state such as double operation or transition to another operation mode, a dead period of a predetermined time is actively provided after receiving a command, and then the content of the command is determined. In each of the above modes, for example, the cancellation time at power on/off is 500n15. Cancellation time for channel up/down is 0.3~0.
7s, 100-120w for picture-search
/s, and these values vary depending on the type of equipment.

Such a cancel interval generating circuit (23) is supplied to an AND gate circuit (24) together with the output of the output circuit (21) via an inverter (23a), and only when the AND condition is satisfied, L E D (drive transistor 81) is supplied to the AND gate circuit (24). (2
Bias the base of 6) through the resistor (25).

The emitter of the drive transistor (26) is a resistor (27)
The collector is connected to the cathode side of the LED (81), and the anode side of the LED i81 is connected to the battery (9) and the VOO terminal of the transmitting IC (2B). are key decoder, data encoder (3), (4), key scanning circuit (20), output circuit (21), CPU (22), cancel section signal generation circuit (23), and AND gate circuit (24).
etc. are integrated into an IC.

The operation of the ridge configuration will be explained with reference to the flowchart in FIG. 2 and the waveform diagram in FIG. 3.

In the remote controller (1) in Fig. 2,
For example, if a power-on key is pressed as shown in the first step STt, the key scanning circuit (20) performs a key search and the CPU (22) performs a key search in the second step ST2.
As shown in the figure below, it is determined whether this command is being executed for the first time. If it is the first command, the power-on command signal (5a) that is output over many frames while the power-on key is pressed as shown in Fig. 3A, is as shown in Fig. 3B. Send 2 frames. Next, the key scanning circuit (20)
, scan the key (2), perform a key search as shown in the fourth step ST4, check whether the power key is "off" as shown in the fifth step STs, and if YES, the fourth Step S T4; if No, first step S
Returned to T1.

In the above case, the power-on state was explained, but the power-off state, stop state, play state, etc. can also be applied.

Therefore, in this flow, only two frames worth of command data are sent to the television receiver of the controlled device (1o) to determine the power-on state, so the remote controller (1) side is The power consumed by the battery (9) during the non-operating section (30) can be saved.

Next, if you press the channel up/down key as key (2), the command contents for this mode (2)
continues to be pressed, but the TV receiver (10) side judges the channel switching operation at intervals of 0.5 to 0.7 seconds, so the command and signal (31) are also as shown in the third diagram. Output is intermittent. Keys for modes like this (2
) is pressed, in the second step ST2 after the key search is performed in the first step ST1, since not only the first command is pressed, the next sixth step ST
In e, the CPU (22) determines whether it is an intermittent command or not.
If the sixth step STε is YES, the seventh step S
Tv transmits 2 frames as shown in the third diagram, and waits until the next channel is selected on the TV receiver (10).
．． Stop transmitting for 5-0.7 seconds. That is, the transmission in the section in which the cancel section signal generation circuit (23) is output is stopped (eighth step 5Te). After 0.5 to 0.7 seconds have elapsed, the process returns to the first step ST1. This 0.5~0.
The 7 seconds can be considered as cancellation time.

Wear can be reduced.

Furthermore, consider the case where a picture search key or the like of a VTR or the like is pressed. In this case, a series of commands as shown in Figure 3F are output, but the VTR side has a cancellation time (31) determined at the time of receiver design, and during this period, even if a command is received, the VTR will not be able to perform a picture search. No judgment is made, therefore, as shown in FIG. 2, the first step ST1→
If the CPU (22) determines that it is not an intermittent command after passing from the second step ST2 to the sixth step STe, it transmits two frames as shown in the waveform of FIG. (31
), the process returns to the first step ST1. Therefore, in this case as well, unnecessary battery consumption during the cancel time period can be suppressed.

Furthermore, since the power consumption is low, a low power solar cell can also be used.

In this example, a card-type remote controller has been described, but the present invention is not limited to such a remote controller, and may be applied to other remote controls. The present invention is not limited to the embodiments on the ridges, and various modifications can be made without departing from the gist of the present invention.

[Effects of the Invention] According to the remote controller of the present invention, battery consumption can be significantly reduced and battery life can be extended. It will also be possible to use solar cells as a remote controller.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the remote controller of the present invention, FIG. 2 is a flowchart of the remote controller of the present invention, FIG. 3 is a waveform diagram of the remote controller of the present invention, and FIG. 4 is a conventional remote controller. Controller system diagram! @
5 is a transmission signal waveform diagram of FIG. 4, and FIG. 6 is an external perspective view of a conventional card remote controller. (1) is the remote controller, (2) is the key, (3)
is a key decoder, (4) is a data encoder, (5) is a modulator, (6) is a carrier generator, (7), (12
) is an amplifier, (8) is a light emitting element, (9) is a battery, (10
) is a controlled device, (11) is a light receiving element, (15) is a decoder, (22) is a CPU, and (23) is a cancellation section signal generation circuit. l-1ba, A

Claims (1)

[Claims] In a remote controller that transmits a command signal from a light emitting element to a controlled device, the transmission of the command signal is stopped for a substantially insensitive period after the controlled device receives the command signal. A remote controller characterized by being configured in the following manner.