KR100289700B1 - Command Transceiver of Wireless Device - Google Patents

Abstract

The present invention relates to an apparatus for accurately transmitting and receiving commands between wireless devices. Despite the abnormally received command among the conventional wireless devices, an exclusive OR operation is performed on the upper byte of the received command and the lower byte of the command, and the received command is performed if the result is "0". Therefore, there is a drawback that a malfunction occurs between wireless devices. Accordingly, in the present invention, all the commands used in each wireless device are stored in each wireless device, and when a specific wireless device receives a command, the received command is processed as normal reception if the received command is among pre-stored commands. Accordingly, even when the frequency band of the channel being used and the frequency band of another channel overlap between the wireless devices, the command can be accurately transmitted and received.

Description

Command Transceiver of Wireless Device

The present invention relates to an apparatus for transmitting and receiving commands of a wireless device, and more particularly, to an apparatus for accurately transmitting and receiving commands between wireless devices.

In communication between general wireless devices, as shown in FIG. 1, the overlapping portion 6 is generated by overlapping the frequency band 2 of a channel being used between the wireless devices and the frequency band 4 of another channel. In such a case, in the overlapping portion 6 of the frequency band 2 of the channel being used, the receiving wireless device cannot normally receive a command transmitted from the transmitting wireless device.

For example, between wireless devices that transmit and receive 16-bit commands, the wireless device on the transmitting side sends an 8-bit command transmission start signal, an upper byte of the command (byte, 8 bits), and a lower byte of the command in order.

The receiving wireless device receives the 8-bit command transmission start signal sent from the transmitting wireless device, the high byte of the command, and the low byte of the command to nibble the high byte of the command and the low byte of the command. Exclusive OR operation on the unit. When the exclusive OR operation result is "0", the receiving wireless device transmits a command normal reception message to the transmitting wireless device, so that the transmitting wireless device transmits the next command. On the other hand, if the exclusive OR operation result is not "0", the receiving wireless device transmits a command abnormal reception message to the transmitting wireless device, so that the transmitting wireless device retransmits the command. In this case, the 16-bit instruction is configured to be "0" when performing an exclusive OR operation on the upper byte of the instruction and the lower byte of the instruction.

Meanwhile, the frequency band 2 of the channel being used and the frequency band 4 of the other channel overlap between the wireless devices, and the command transmitted from the wireless device on the transmitting side may be received by the wireless device on the receiving side in a modified state. . Despite the abnormally received command, the receiving wireless device performs an exclusive OR operation on the upper byte of the command and the lower byte of the command in nibble units, and determines that the command is normally received when the result is "0". Thereafter, the receiving wireless device executes an abnormally received command.

Therefore, despite the abnormally received instruction between the conventional wireless devices, the exclusive instruction is performed on the upper byte of the received instruction and the lower byte of the instruction, and the received instruction is performed only if the result becomes "0". Therefore, there is a drawback that a malfunction occurs between wireless devices.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and all the commands used in each wireless device are stored in each wireless device, and when a specific wireless device receives a command, the received command is written. It is an object of the present invention to provide a command transmission / reception device of a wireless device that processes a normal reception of a command when it is among stored commands.

In order to achieve the above object, the present invention provides a wireless device for transmitting and receiving commands, the wireless device comprising: a storage unit for storing all of the commands used; A key input unit which inputs and selects a command to transmit; Transmitting and receiving unit for transmitting and receiving a command; At the time of transmission, the command selected from the key input unit is extracted from the storage unit and transmitted to the outside through the transceiver. And a control unit that executes the command normally.

1 is a diagram illustrating a phenomenon in which a frequency band of another channel overlaps with a frequency band of another channel in use;

2 is a block diagram illustrating an embodiment of an apparatus for transmitting and receiving a command of a wireless device according to the present invention;

3 is a flowchart showing step by step an embodiment of a method for transmitting a command of a wireless device according to the present invention;

Figure 4 is a flow chart showing step by step an embodiment of a method of receiving a command of a wireless device according to the present invention.

<Description of the symbols for the main parts of the drawings>

2: Frequency band of channel in use 4: Frequency band of other channel

12, 22: key input unit 14, 24: transceiver

16, 26: antenna 18, 28: storage unit

20, 30: Micom 100, 200: 1st, 2nd wireless device

Hereinafter, an embodiment of the present invention for achieving the above object in detail.

2 is a block diagram illustrating an embodiment of an apparatus for transmitting and receiving a command of a wireless device according to the present invention, and includes first and second wireless devices 100 and 200. In this case, the first wireless device 100 includes a key input unit 12, a transceiver unit 14, an antenna 16, a storage unit 18, and a microcomputer 20. In addition, the second wireless device 200 includes a key input unit 22, a transceiver unit 24, an antenna 26, a storage unit 28, and a microcomputer 30.

In the figure, the storage unit 18 in the first wireless device 100 stores all the instructions used.

The key input unit 12 provides a key signal according to the key input to the microcomputer 20 to select a command for transmission by the user.

The transceiver 14 transmits and receives commands through the antenna 16. At this time, the transmission and reception unit 14 modulates the command provided from the microcomputer 20 and transmits it to the outside. In addition, when receiving, the transceiver 14 demodulates an externally modulated command and provides it to the microcomputer 20.

At the time of transmission, the microcomputer 20 extracts a command selected from the key input unit 12 from the storage unit 18 and transmits the command to the outside through the transceiver unit 14 and the antenna 16. In addition, the microcomputer 20 normally executes the received command when the command received from the outside through the antenna 16 and the transceiver unit 14 is among the commands previously stored in the storage unit 18.

Operation of the second wireless device 200 is similar to that of the first wireless device 100. However, when the second wireless device 200 operates as the transmitting side, the first wireless device 100 may operate as the receiving side and vice versa. In addition, when another wireless device operates as a transmitting side, the first and second wireless devices 100 and 200 may operate as a receiving side and vice versa.

For example, assuming that the first wireless device 100 operates on the transmitting side and the second wireless device 200 operates on the receiving side, the microcomputer 20 in the first wireless device 100 transmits and receives a transmitter as shown in FIG. 3. In operation 52, the command transmission start signal is transmitted to the second wireless device 200 through the antenna 16. Subsequently, the command high byte is transmitted to the second wireless device 200 through the transceiver 14 and the antenna 16 (54). Subsequently, the command low byte is transmitted to the second wireless device 200 through the transceiver 14 and the antenna 16 (56). Thereafter, it is checked whether the command normal reception message is received from the second wireless device 200 through the antenna 16 and the transceiver unit 14 (58). As a result of checking in the step 58, if the command normal reception message is not received, set the retransmission mode to send the command again through the antenna 16 and the transceiver unit 14, and if the command normal reception message is received, The transmission is performed through the antenna 16 and the transceiver unit 14 (60).

Next, the microcomputer 30 in the second wireless device 200 checks whether the command transmission start signal is received from the first wireless device 100 through the antenna 26 and the transceiver unit 24 as shown in FIG. 4. 62). When the command transmission start signal is received, it is checked whether the command higher byte is received through the antenna 26 and the transceiver unit 24 (64). When the command high byte is received, the received command high byte is stored in the storage unit 28 (66). It is checked (68) whether the command low byte is received via the antenna 26 and the transceiver 24. When the command low byte is received, the received command low byte is stored in the storage unit 28 (70). An exclusive OR operation is performed on the stored upper byte of the command and the lower byte of the command in nibble units (72). It is checked if the result of the exclusive OR operation of step 72 is " 0 " (74). If the result of the check in step 74 is " 0 ", it is checked whether the stored higher byte and the lower byte of the instruction are among the stored instructions (76). In step 76, the command normal message is transmitted to the first wireless device 100 through the transceiver unit 24 and the antenna 26 (78). Thereafter, the microcomputer 30 performs the received command execution (80). At this time, if the check result in step 74 is not "0", the command abnormal message is transmitted to the first wireless device 100 through the transceiver 24 and the antenna 26 (82).

As described above, the present invention stores all the commands used in each wireless device in each wireless device, and when a specific wireless device receives the command, when the received command is among the pre-stored commands, the command is normally received. Do it. Therefore, even when the frequency band of the channel being used and the frequency band of another channel overlap between the wireless devices, the command can be accurately transmitted and received.

Claims (1)

For each wireless device that sends and receives commands: At least one or two or more of the wireless devices may include a storage unit which stores all of the instructions used; A key input unit which inputs and selects a command to transmit; Transmitting and receiving unit for transmitting and receiving a command; At the time of transmission, the command selected from the key input unit is extracted from the storage unit and transmitted to the outside through the transceiver. When receiving, when the command received from the outside through the transceiver unit is among the commands previously stored in the storage unit, the received command is received. Command transmitting and receiving device of a wireless device including a control unit for executing a command normally.