Abstract: A method of transmitting data via a serial communication line and a serial communication device are disclosed. The method of transmitting data via a serial communication line includes: generating a signal to be transmitted based on a predetermined serial communication protocol, and transmitting the data through the signal to be transmitted via the serial communication line; wherein the signal to be transmitted includes a start symbol, an end symbol, and a data frame of the data to be transmitted, the data frame is a variable-length byte frame, for each byte data, if the byte data is a positive numerical value, the variable-length byte frame is generated by omitting all bits 0 before a first bit 1 of a binary equivalent of the positive numerical value.

Abstract: A method of transmitting data via a serial communication line and a serial communication device are disclosed. The method of transmitting data via a serial communication line includes: generating a signal to be transmitted based on a predetermined serial communication protocol, and transmitting the data through the signal to be transmitted via the serial communication line; wherein the signal to be transmitted includes a start symbol, an end symbol, and a data frame of the data to be transmitted, the data frame is a variable-length byte frame, for each byte data, if the byte data is a positive numerical value, the variable-length byte frame is generated by omitting all bits 0 before a first bit 1 of a binary equivalent of the positive numerical value.

Abstract: A projector includes a main body, sub-body having an optical engine system, and a telescopic electric suspension arm, of which a first end is fixed in the main body, and a second end is connected to the sub-body. When the electric suspension arm retracts, the projector is in a closed position, where the sub-body and the electric suspension arm are both placed in the main body; and when the electric suspension arm extends, the projector is in an open position, and the sub-body moves out from the main body.

Abstract: A projector includes a main body, sub-body having an optical engine system, and a telescopic electric suspension arm, of which a first end is fixed in the main body, and a second end is connected to the sub-body. When the electric suspension arm retracts, the projector is in a closed position, where the sub-body and the electric suspension arm are both placed in the main body; and when the electric suspension arm extends, the projector is in an open position, and the sub-body moves out from the main body.

Abstract: A projector includes a main body, sub-body having an optical engine system, and a telescopic electric suspension arm, of which a first end is fixed in the main body, and a second end is connected to the sub-body. When the electric suspension arm retracts, the projector is in a closed position, where the sub-body and the electric suspension arm are both placed in the main body; and when the electric suspension arm extends, the projector is in an open position, and the sub-body moves out from the main body.