JP2674182B2 - Synchronous control bus system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronous control bus system for externally controlling each device.

2. Description of the Related Art In recent years, a bidirectional synchronous control bus system has become indispensable for popularization of home buses in homes and system upgrade of audio and video equipment.

An example of the conventional synchronous control bus system described above will be described below with reference to the drawings.

FIG. 4 is a system block diagram of a conventional synchronous control bus system. In FIG.
Reference numeral 1 is a remote control light receiving means for receiving an optical wireless remote control signal and converting it into an electric signal, 2 is a synchronous control bus connecting each device, 3 is a remote control signal line for sending the signal of the remote control light receiving means 1 to each device, 4 is a Bus control means for transmitting and receiving data via the synchronous control bus 2;
Reference numeral 5 is remote control code decoding means for decoding the electric signal obtained from the remote control signal line 3 and converting it into codes of 0 and 1, and 6 is for converting the bus data obtained from the bus control means 4 into command data and vice versa. A bus code converting means for converting command data into bus data; 7 a remote control converting means for converting remote control data obtained from the remote control code decoding means 5 into command data; 8 a bus control means 4;
And the data obtained from the remote control code decoding means 5 are converted into command data by the bus code conversion means 6 and the remote control code conversion means 7, respectively, to control own equipment, and conversely, the command data is converted to the bus code conversion means 6. It is device control means for converting the data into bus data by using the bus control means 4 and sending data via the synchronous control bus by the bus control means 4 to control other devices. Reference numerals 9 and 10 are devices each including the above means.

The operation of the synchronous control bus system configured as described above will be described below.

First, when controlling with an optical wireless remote controller, the optical wireless remote controller signal is converted into an electric signal by the remote controller light receiving means 1, and the remote controller electric signal is transferred to the remote controller code decoding means 5 by the remote controller signal line 3. The remote control code decoding means 5 converts the remote control electric signal into codes of 0 and 1 and transfers the remote control data to the device control means 8. The device control means 8
Then, the remote control data is converted into command data by the remote control code conversion means 7, and the equipment is controlled based on the command data. Further, the bus data obtained from the synchronous control bus 2 by the bus control means 4 is sent to the equipment control means 8, the bus data is converted into command data by the bus code conversion means 6, and the equipment is controlled based on the command data. To do.
When controlling other devices, the command data is converted into bus data by using the bus code converting means 6, and this is transferred to the synchronous control bus through the bus controlling means 4,
Control other equipment.

However, in the above configuration, in order to read the optical wireless remote control signal and control the synchronous control bus signal in the entire system, the remote control code decoding means dedicated to each device is used. The remote control code conversion means, the bus control means and the bus code conversion means are required, which leads to an increase in cost due to the system configuration.
As described above, the dedicated means for reading the remote control signal and the control of the bus signal are required, as shown in FIG. 3, for the remote control signal to represent 0 and 1 in pulse width, and for the bus signal to be synchronous. This is because there is a large difference between the signal transfer modes of the two. There are two types of code converting means because the code systems of both are different.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a synchronous control bus system in which bus control including reading of an optical wireless remote controller can be realized at low cost.

Means for Solving the Problems In order to solve the above problems, a synchronous control bus system of the present invention has a synchronous control bus connecting each device, a remote control light receiving means, a remote control code decoding means, and a bus control means. A plurality of remote control receiving devices, a bus control means for transmitting and receiving bus data, a code conversion means used for converting bus data to command data, and a device control means for controlling own device or giving a command to other devices by the transmitted and received data Composed of equipment.

With the present invention, since the optical wireless remote control signal is transferred on the same bus and the data code is the same as the command data of each device, the remote control code decoding means is not required for each device. Thus, the common bus code conversion means and the remote control code conversion means are sufficient.

Embodiment A synchronous control bus system according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a synchronous control bus system according to the first embodiment of the present invention. In FIG. 1, 11 is a remote control light receiving means for receiving an optical wireless remote control signal and converting it into an electric signal, and 12 is a remote control code for decoding the electric signal obtained from the remote control light receiving means 11 and converting it into a code of 0 and 1. Decoding means 13 is a bus control means for sending the code signal obtained from the remote control code decoding means 12 via a synchronous control bus, 14
Is the remote control light receiving means 11, the remote control code decoding means 12,
It is a remote control receiving device including a bus control means 13. Reference numeral 15 is a synchronous control bus connecting each device, 16 is a bus control means for transmitting and receiving data through the synchronous control bus 15, 17 is a bus data obtained from the bus control means 16 is converted into command data, and Conversely, code conversion means common to the remote control code for converting command data into bus data, 18 converts the bus data obtained from the bus control means 16 into command data using the code conversion means 17 to operate its own device. Device control means for controlling and, conversely, converting command data into bus data using the code conversion means 17, and sending data to another device via the synchronous control bus 16 by the bus control means 16, 19 is the above-mentioned The device A is composed of a bus control means 16, a code conversion means 17, and a device control means 18.

The operation of the synchronous control bus system configured as described above will be described below with reference to FIGS. 1, 2, and 3.

First, when controlling by an optical wireless remote controller, the optical wireless remote controller signal is converted into an electric signal by the remote controller light receiving means 11, and the electric signal is shown in FIG.
As shown in, the signal represents 0 and 1 in the pulse width.
This is converted into codes of 0 and 1 by using the remote control code decoding means 12, and this remote control data is placed on the synchronous control bus 15 by using the bus control means 13. Then, each device reads the data of the synchronous control bus 15 at the same time, and the case of the device A19 will be described.
The data of the synchronous control bus 15 is a bus control means.
It is received by 16 and transferred to the device control means 18. The transferred bus data is converted into command data by the code conversion means 17, and the device control means is based on this command data.
18 controls the device A19. If the content of the command data is not for the device A19, the command data is invalid.

Next, when the device A19 controls the device B20, the command data is converted into bus data by the code conversion means 17, the bus data is sent to the bus control means 16, and further the above-mentioned data is sent via the synchronous control bus 15. Command data is transmitted to the device B20 through the same process as described above, and the device B20 can be controlled. FIG. 2 shows a circuit diagram of the bus.

As described above, according to the present embodiment, by providing the remote control receiving device that puts the optical wireless remote control signal on the same bus, and by making the remote control data code and the control bus data code the same data code, No remote control code decoding means is required, and only one common code conversion means is required for the bus code conversion means and the remote control code conversion means.

EFFECTS OF THE INVENTION As described above, the present invention provides a remote control receiving device for loading an optical wireless signal on the same bus, and sets the remote control data code and the control bus data code to be the same data code. There is no need for code decoding means, and there is only two to one code conversion means.

[Brief description of the drawings]

FIG. 1 is a block diagram of a synchronous control bus system in the first embodiment of the present invention, FIG. 2 is a circuit diagram of a synchronous control bus, FIG. 3 is a waveform diagram of remote control signals and bus signals, and FIG. FIG. 1 is a block diagram of a conventional synchronous control bus system. 11 …… Remote control light receiving means, 15 …… Synchronous control bus, 13,16 …… Bus control means, 12 …… Remote control code decoding means, 14 …… Remote control receiving device, 18 …… Device control means, 19 …… Device A, 20 ... Equipment B, 17 ... Code conversion means.

Claims (1)

(57) [Claims] 1. A synchronous control bus connecting each device,
Remote control light receiving means for receiving an optical wireless remote control signal and converting it into an electric signal, remote control code decoding means for decoding the electric signal obtained from the remote control light receiving means and converting it into a code of 0 and 1, and the remote control code decoding means. From the remote control receiving device having a bus control means for sending the code signal obtained from the above through the synchronous control bus, a bus control means for transmitting and receiving data through the synchronous control bus, and the bus control means Code conversion means common to the remote control code for converting the obtained bus data into command data and vice versa, and commanding the bus data obtained from the bus control means using the code conversion means. Controls own equipment by converting to command data, conversely using the code conversion means for command data Converted into Sudeta, synchronous control bus system including a plurality of devices and a device control unit to send data to another device via the synchronous control bus by the bus control unit.