초록 ▼

A special data including communication wire continuous dominant levels of a number of N more than the transceiving bit number of n of communication wire continuous dominant levels, set in a character as one unit of communication data, can be transceived by a widely-used serial communication interfac

A special data including communication wire continuous dominant levels of a number of N more than the transceiving bit number of n of communication wire continuous dominant levels, set in a character as one unit of communication data, can be transceived by a widely-used serial communication interface such that a predetermined transmission rate is changed to n/N times the transmission rate only when the special data is transmitted, whereby the special data can be easily transceived at a low cost.

대표청구항 ▼

What is claimed is: 1. A method for transmitting communication data at a predetermined transmission rate by Universal Asynchronous Receiver/Transmitter (UART), the method comprising: only when a special data having a bit number of N more than a transceiving bit number of n, set in a character as on

What is claimed is: 1. A method for transmitting communication data at a predetermined transmission rate by Universal Asynchronous Receiver/Transmitter (UART), the method comprising: only when a special data having a bit number of N more than a transceiving bit number of n, set in a character as one unit of the data, is sent, changing the predetermined transmission rate to n/N times the predetermined transmission rate. 2. The method for transmitting the communication data according to claim 1, wherein the special data is fabricated by communication wire continuous dominant levels of a number of N more than the transceiving bit number of n of communication wire continuous dominant levels, set in a character as one unit of the communication data. 3. A device for transmitting communication data, the device comprising: a data control unit for transmitting the data at a predetermined transmission rate by Universal Asynchronous Receiver/Transmitter (UART) and a serial communication interface for transmitting the data from the data control unit to a communication wire, wherein only when a special data having a bit number of N more than a transceiving bit number of n, set in a character as one unit of the data is sent, the predetermined transmission rate is changed to n/N times the predetermined transmission rate. 4. The device for transmitting the communication data according to claim 3, wherein the special data is fabricated by communication wire continuous dominant levels of a number of N more than the transceiving bit number of n of communication wire continuous dominant levels, set in the character as one unit of the data. 5. A method for transmitting communication data at a predetermined transmission rate by Universal Asynchronous Receiver/Transmitter (UART), the method comprising: when an intercharacter time is required between characters, which are one unit of the data, transmitting the data after adding a bit number satisfying the intercharacter time to a stop bit number in the characters defined on a transceiving side, wherein the characters together with the added bit number are transmitted in a communication frame. 6. A method for transmitting the communication data according to claim 5, wherein the intercharacter time between the characters is a time duration of a communication wire recessive level. 7. The method according to claim 5, wherein said added bit number satisfies intercharacter time between two characters of said characters transmitted in a single communication frame, wherein said one unit of data comprises a respective character, the stop bit and the added bit number satisfying the intercharacter time, and wherein said one unit of data is transmitted in the single communication frame after the bit number satisfying the intercharacter time is added to the stop bit. 8. A device for transmitting communication data, the device comprising: a data control unit for transmitting the data at a predetermined transmission rate by Universal Asynchronous Receiver/Transmitter (UART) and a serial communication interface for sending the data from the data control unit to a communication wire, wherein when an intercharacter time is required between characters, which are one unit of the data, the data are transmitted after adding a bit number satisfying the intercharacter time to a stop bit number in the characters defined on a transceiving side, wherein the characters together with the added bit number are transmitted in a communication frame. 9. The device for transmitting the communication data according to claim 8, wherein the intercharacter time between the characters is a time duration of a communication wire recessive level. 10. The device according to claim 8, wherein said added bit number satisfies intercharacter time between two characters of said characters transmitted in a single communication frame, wherein each character forms said one unit of data, wherein said one unit of data comprises a respective character, the stop bit and the added bit number satisfying the intercharacter time, and wherein said one unit of data is transmitted in the single communication frame after the bit number satisfying the intercharacter time is added to the stop bit. 11. The device according to claim 8, wherein the device executes said transmitting of the data without involving a microcomputer processing unit for the intercharacter time. 12. A method for transmitting communication data at a predetermined transmission rate by Universal Asynchronous Receiver/Transmitter (UART), the method comprising: transmitting data comprising a plurality of characters in a communication frame, wherein, each of the plurality of characters is one unit of said data, wherein said one unit of data comprises at least one stop bit, and wherein, when an intercharacter time is required between said plurality of characters, prior to said transmission, adding a bit number satisfying the intercharacter time to said at least one stop bit, wherein said one unit of data further comprises the intercharacter time.