51 results about "PD protocol" patented technology

The present invention relates to the technical field of decoding, in particular to a decoding method, storage device and decoder suitable for SOP packets of the USB-PD protocol. Described a kind of decoding method applicable to the SOP packet of USB-PD protocol, comprises the steps: after Preamble is received correctly, starts setting f, and b starts counting simultaneously; If the first K-code is received correctly, c counter adds 1 ;If the first K-code is not received correctly, set h to 1 when b>5; if a K-code packet matching event occurs when b<=5, then set d to 1; if 8<=b< =10 and h=1 when a K-code packet matching event occurs, set e to 1; when d=1, correct b to 5; when e=1, correct b to 10; when b=20 , set g to 1; when d=1 or e=1 or b=5, 10, 15, and 20 in the case of K-code packet matching, add 1 to c respectively; perform sop decoding when c>=3 ; Sop decoding result stored in j. Through this technical solution, the entire sop package can still be completely decoded in the case of any one K-code error or the last preamble error in a total of four K-codes.

The invention discloses an adapter device based on a PD protocol and a charging method. The device comprises a device entrance, a master control MCU, an LDO power supply module, a VBUS voltage detection unit, and a device exit. The device entrance is connected to a PD adapter power supply, and the device exit is connected to a traditional notebook. The VBUS voltage detection unit is between the device entrance and the device exit and is connected to the device entrance through CC1 and CC2 paths. The LDO power supply module and the VBUS voltage detection unit are connected to the master control MCU and are connected to the VBUS voltage detection unit. According to the adapter device and the charging method, a problem that an existing PD adapter can not be compatible with traditional notebook charging is solved, and the PD adapter power supply outputs specific voltage needed by the traditional notebook to the traditional notebook to carry out charging.

The invention discloses a rapid charging system and method based on a USB PD protocol. The system comprises an adapter and a power utilization device; the adapter comprises a first input port, a first output port and a voltage transformation rectification filter voltage stabilizing circuit, and the voltage transformation rectification filter voltage stabilizing circuit comprises a first data processing chip which is based on the USB PD protocol and in data communication with the power utilization device; the power utilization device comprises a second input port connected with the first output port, a rechargeable battery and a charging control circuit, and the charging control circuit comprises a second data processing chip which is based on the USB PD protocol and in data communication with the adapter, a BUCK voltage conversion circuit and a constant current charging circuit; both the first output port and the second input port are Type C standard USB ports or Micro USB ports. According to the rapid charging system and method, the power utilization device directly adjusts the magnitude of the output voltage of the adapter through the USB PD protocol to make the adapter enter a constant current output work mode of the designated parameter, charging efficiency is high, and the power loss and heating in the power utilization device are lowered.