JPS607295A - Transmission system - Google Patents

Abstract

PURPOSE:To reduce the number of time of transmission by adding a check sum code corresponding to the sum between a custom code and an operating state setting code in the remote control of an air-conditioner so as to reduce the operating state setting data thereby setting once plural kinds of the operating states. CONSTITUTION:When a key circuit 1 is operated and a desired operating state is set, an operating state setting code in response to the contents of the setting is generated from a generating circuit 3 and stored respectively in a check sum code generating circuit 7 and a serial signal generating circuit 8. The operating state setting code is modulated by a modulating circuit 9 and transmitted from a lighting circuit 10 to an air-conditioner main body. The air-conditioner main body checks the custom code of the received operating state setting data and the operating state setting code by the check sum code for whether or not the operating state setting code is in error. As a result of discrimination, when the custom code corresponds to the air-conditioner, the operating state setting code is received at first.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a transmission method used for remote control of, for example, an air conditioner.

[Technical background of the invention]

Conventionally, a remote control device used for remote control of an air conditioner, for example, has a leader code for specifying the head, a custom code for selecting the target device (air conditioner), an inverted code for this custom coat 9, and a code for setting the operating status. Data consisting of an operating state membrane 53 code, an inverted code of this operating state setting code, etc. is transmitted to the air conditioner main body as operating state setting data. However,
When the air conditioner itself, which is the target equipment, receives the operating status setting data, it compares the custom code with its inverted code to determine whether there is an error in the custom code.
Furthermore, the operating status setting code and its inverted code are compared to determine whether there is an error in the operating status setting code, and whether there is an error in either code and whether the custom code is compatible with the air conditioner in question. If it is compatible, it accepts the operating state setting code and sets the operating states accordingly.

[Problems with background technology]

By the way, custom code and operating state setting code °
In order to check this, each inverted code is added, but the data becomes very long.

If the data is long, the transmission time increases, and the reception control time on the air conditioner main body side becomes correspondingly longer, which may interfere with other controls of the air conditioner main body. In addition, if the transmission time increases, the life of the remote control device (DN power supply battery) will be extremely shortened.Therefore, the operating status setting code is designed to only set one operating status, thereby reducing the data as much as possible. However, when setting multiple types of operating conditions, data must be transmitted multiple times, which ultimately increases the transmission time and causes the problems described above. Put it away.

[Purpose of the invention]

This invention was made in view of the above circumstances,
The purpose of this is to shorten the length of the transmitted data as much as possible, and also to reduce the number of data transmissions, thereby shortening the transmission time and shortening the reception control time of the target device. An object of the present invention is to provide an excellent transmission method that can avoid adverse effects on other controls, and can also extend the life of a power battery of a remote control device.

[Summary of the invention]

This invention provides a custom code and an operating state setting code P.
A checksum code corresponding to the sum of the custom code and the operating status setting code is added to each reverse coat 90 for checking, thereby shortening the operating status setting data. be. Fortunately, this shortening allows the operating state setting code to be extended, allowing multiple types of operating states to be set at once, thereby reducing the number of transmissions.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a control circuit of a remote control device according to the present invention. In FIG. 1, reference numeral 1 denotes a key circuit which supplies various command signals according to user's operations to a transmission control circuit 2 and an operating state setting code generation circuit 3, respectively. The transmission control circuit 2 generates a reader code generation circuit 4, a custom code generation circuit 5, a checksum reader code generation circuit 6, a checksum code generation circuit 7, and the above-mentioned operating status setting code generation circuit in response to commands from the key circuit 1. 3, respectively.

The reader code generation circuit 4 generates a reader code to indicate that the operating state setting data starts from here and to synchronize subsequent codes.The reader code is sent to the serial signal generation circuit 8. Supplied. The custom code generation circuit 5 generates a custom code for selecting the air conditioner itself, which is the target device, and the custom code is transmitted to the checksum code generation circuit 7 and the serial signal generation circuit 8.
are supplied to each. Operating status setting code generation circuit 3
1 generates an operating state setting code in response to a command from the key circuit 1, and the operating state setting code is supplied to a checksum code generating circuit 7 and a serial signal generating circuit 8, respectively. The checksum reader code generation circuit 6 generates a checksum reader code for separating an operating state setting code from a checksum code to be described later, and the checksum reader code is supplied to the serial signal generation circuit 8. The checksum code generation circuit 7 calculates the sum of the supplied custom code and the operating state setting code, and generates, for example, the lower 4 bits of the sum as a checksum code for the custom code and the operating state setting code. The sum code is supplied to the serial signal generation circuit 8.

On the other hand, the serial signal generation circuit 8 replaces various supplied codes in a prescribed order and outputs them serially.
The serial signal is supplied to the modulation circuit 9 as operating state setting data.

The modulation circuit 9 modulates the supplied operating state setting data and supplies it to the light emitting circuit 10.

The light emitting circuit 10 blinks in response to the modulated operating state setting data, thereby transmitting the operating state setting data to the air conditioner main body through light.

Next, the operation in the above configuration will be explained.

Now, when a desired operating state is set by operating the key circuit 1, an operating state setting code corresponding to the setting is generated from the operating state setting code generating circuit 3. In this case, if the operating state to be set is, for example, "operating off", a 1-bit operating state setting code as shown in FIG. 2(a) is issued, and the operating state to be set is, for example, "operating on". If it is a plurality of codes including , a multi-bit operating state setting code as shown in FIG. 4. A leader code, a custom code, and a checksum reader code are generated from the custom code generation circuit 5 and the checksum reader code generation circuit 6, respectively.These codes are supplied to the serial signal generation circuit 8.At this time, the custom code is 1 which is also supplied to the checksum code generation circuit 7, the checksum code generation circuit 7 is IE
As shown in Figure 3, the supplied custom code (4 bits) is a hexadecimal value, and the operating status setting code is divided into 4 bits each and each is a hexadecimal value, and the custom code expressed by the hexadecimal value is Calculate the sum of the code and the operating status setting code. In this case, the custom code is "A" in hexadecimal value, and the operating status setting code is 16.
, the numerical value of a is "D + 6 + 1", so the sum is "I E ". Therefore, the sum of the custom code and the operating state setting code is represented by 5 bits, and the lower 4 bits ("E"') are output as the checksum code. This checksum code is supplied to the serial signal generation circuit 8.

The serial signal generation circuit 8 arranges the already supplied operating state setting code and the subsequently supplied reader code, custom code, checksum reader code, and checksum code in a prescribed order, and generates the output as shown in FIG. Output as format operating status setting data. This operating state setting code is modulated by the modulation circuit 9 and transmitted from the light emitting circuit 1o to the air conditioner main body.

The air conditioner main body uses a checksum code to check whether or not there is an error in the custom code and operating state setting code of the received operating state setting data. As a result of this check, if there are no errors in the custom code and the operating state setting code, it is then determined whether the custom code corresponds to the air conditioner concerned.

As a result of this 411 determination, if the custom code corresponds to the air conditioner concerned, then the operating state setting code is accepted, that is, the operating state is set according to the contents of the operating state setting code.

In this way, a very short checksum code that is the sum of both codes can be used to check the custom code and the operating status setting code.

Since it is added, the operating state setting data can be significantly shortened. Furthermore, this shortening allows the operating state setting code to be extended, allowing multiple types of operating states to be set at once, and reducing the number of transmissions. Therefore, the transmission time can be shortened, the reception control time of the air conditioner main body can be shortened, and an adverse effect on other controls can be avoided. Moreover, the life of the power supply battery of the remote control device can be extended.

〔Effect of the invention〕

As described above, according to the present invention, the length of data to be transmitted can be shortened as much as possible, and the number of data transmissions can also be reduced. It is possible to provide an excellent transmission method that can shorten the reception control time to avoid adverse effects on other controls, and can also extend the life of the power battery of the remote control device.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a configuration diagram of a control circuit of a remote control device, and FIG.
) (b) is a diagram showing an example of the operating state setting code, FIG. 3 is a diagram for explaining the operation of the check sum go 69 generation circuit, and FIG. 4 is a diagram showing the formatter of the operating state setting data. 3... Operating status setting code generation circuit, 5... Custom code generation circuit, 7... Checksum code generation circuit.

Claims (2)

[Claims] (1) A leader code for specifying the beginning, a custom code for selecting the target device, an operating status setting code for setting the operating status, a checksum reader code for code separation, and the above custom code and operating status setting code. A transmission method characterized in that data consisting of a custom code and a checksum code for checking the operating state setting code is transmitted as the operating state setting data. (2) The transmission method according to claim 1, wherein the operating state setting code has a variable length.