公开(公告)号：US10986322B1

公开(公告)日：2021-04-20

申请号：US17082636

申请日：2020-10-28

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Xiao-Yu Chen ,  Gang Shen ,  Yang Lu ,  Dong-Yu He

IPC: H04N9/73 ,  H04N9/31

Abstract: An image white balance processing method is provided. The image white balance processing method includes: calculating color coordinate points; when it is determined that the color coordinate points are in a first given region, calculating a plurality of weighted averages according to a plurality of coordinate components and a plurality of weight values of color coordinate points of a white given image region, and when it is determined that the color coordinate points are in a second given region, calculating a plurality of averages according to a plurality of coordinate components of color coordinate points of a green given image region; calculating an estimated coordinate point; and calculating a plurality of white balance gains according to the number of a plurality of white given image regions and green given image regions, the plurality of weighted averages, and the estimated coordinate point to compensate for the plurality of given image regions.

公开(公告)号：US20230394156A1

公开(公告)日：2023-12-07

申请号：US18204618

申请日：2023-06-01

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Tian-Yuan Zhang ,  Yang Lu ,  Gang Shen ,  Dong-Yu He

IPC: G06F21/57 ,  G06F13/16

CPC classification number: G06F21/575 ,  G06F13/1668

Abstract: An embedded electronic device and a boot method are provided. A processor of the embedded electronic device is configured to execute following steps based on a first boot procedure: verifying whether a second memory device safely corresponds to a first memory controller; in response to that the second memory device safely corresponds to the first memory controller, deciphering and verifying stored data of the second memory device through the first memory controller; and in response to that the second memory device does not safely correspond to the first memory controller, verifying whether the second memory device safely corresponds to a second memory controller.

公开(公告)号：US11870774B2

公开(公告)日：2024-01-09

申请号：US17316962

申请日：2021-05-11

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Hong-Hai Dai ,  Yang Li ,  Dong-Yu He ,  Jiayuan Tan

IPC: H04L9/40 ,  G06F21/32

CPC classification number: H04L63/0861 ,  G06F21/32 ,  H04L63/0428 ,  H04L63/166

Abstract: A method for authentication data transmission and a system thereof are provided. The method is operated in a computer system that is connected to a biometric device, and a secure channel is established there-between according to a security protocol. The computer system can receive encrypted biometric feature data from the biometric device based on a request. In a secure environment built in the computer system, the biometric feature data is decrypted and biometric features can be extracted. A comparison result is generated after comparing the biometric features with feature data in a database. The comparison result can be transmitted to the biometric device. The comparison result is then encrypted in the biometric device according to the security protocol. The biometric device can therefore transmit the encrypted comparison result to the computer system via the secure channel.

公开(公告)号：US11803366B2

公开(公告)日：2023-10-31

申请号：US17231119

申请日：2021-04-15

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Dong-Yu He ,  Meng-Yao Gu ,  Jian Sun

IPC: G06F9/44 ,  G06F8/654 ,  H04L9/32 ,  H04L9/40 ,  G06F21/57 ,  H04L9/30

CPC classification number: G06F8/654 ,  G06F21/572 ,  H04L9/3073 ,  H04L9/3252 ,  H04L63/0435 ,  H04L63/0442 ,  H04L63/123 ,  G06F2221/033

Abstract: A firmware updating system and method are provided. The firmware updating method includes configuring a host to digitally sign a firmware to be updated, and configuring an electronic device to perform an authorization verification on an update tool, and only the update tool that passes the verification has an update permission. The update tool uses an encryption algorithm to encrypt the firmware to be updated that includes a digital signature. After the encryption is completed, the host sends the update tool to the electronic device through the update tool. The electronic device then uses a decryption algorithm to decrypt the received firmware to obtain the firmware to be updated including the digital signature, and write the firmware to be updated into a firmware storage area to be updated. The electronic device then verifies the digital signature in the firmware to be updated.

公开(公告)号：US20240385677A1

公开(公告)日：2024-11-21

申请号：US18626619

申请日：2024-04-04

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Song Wang ,  Dong-Yu He ,  Jian Sun ,  Hui Li

IPC: G06F1/3287 ,  G06F1/3209

Abstract: A circuit sleep method includes: writing all data stored in a memory unit into a current data-backup block and performing a check calculation on the data written into the current data-backup block to obtain a first verification value; powering down the circuit to make the circuit enter a sleep mode; restarting the circuit and determining whether the processing unit has written all the data stored in the memory unit into the current data-backup block before the circuit enters the sleep mode; performing the check calculation on the data stored in the current data-backup block to obtain a second verification value and comparing the first verification value with the second verification value; and writing back the data stored in the current data-backup block to the memory unit in a case that the first verification value and the second verification value are the same.

公开(公告)号：US11778196B2

公开(公告)日：2023-10-03

申请号：US17548658

申请日：2021-12-13

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Dong-Yu He ,  Jing Sun ,  Jian Sun

IPC: H04N19/14 ,  H04N19/172 ,  H04N19/124 ,  H04N19/146

CPC classification number: H04N19/14 ,  H04N19/124 ,  H04N19/146 ,  H04N19/172

Abstract: A method for compressing video signals based on adaptive compression rate and a circuit system thereof are provided. In the method, a digital signal processor is used to process a video so as to frame-by-frame obtain statistical data, for example, a maximum of compressed data. The maximum of compressed data of a previous frame is used to determine a compression state of a current frame. The compression state of the frame allows the processor to decide a direction to adjust a compression ratio. Next, statistical data of the previous frame is used to decide a stride to adjust the compression ratio. The statistical data can be a maximum of compressed data and a quantization table scale referred to rendering a prediction curve that allows the processor to determine the stride. A compression ratio is then determined according to the direction and the stride of adjustment.