Hsinchu City, Taiwan
Hsinchu City, Taiwan

MediaTek Inc. is a fabless semiconductor company that provides system-on-chip solutions for wireless communications, HDTV, DVD and Blu-ray. Headquartered in Hsinchu, Taiwan, the company has 25 offices worldwide and was the 4th largest IC designer worldwide in 2013. Since its founding in 1997, MediaTek has been creating chipset solutions for the global market. MediaTek also provides its customers with reference designs. Wikipedia.


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A communication method that operates by determining a first set of physical parameters of a first channel by a coordinator in a wireless communication system; establishing communication with a first set of devices over the first channel; determining a protection period in accordance with a pre-determined rule; broadcasting a channel-adjustment message, wherein the channel-adjustment message comprises a set of instructions for indicating how to adjust from the first channel to a second channel, and the set of instructions comprise channel bandwidth information for indicating how to adjust to a bandwidth of the second channel and central frequency information for indicating how to adjust to a central frequency of the second channel; and communicating with a second set of devices over the second channel during the protection period.


Patent
MediaTek | Date: 2017-01-02

A method and an apparatus pertaining to improved multi-user multiple-input and multiple-output (MU-MIMO) communications and power saving for a set of wireless communication devices may involve transmitting a beacon frame to the set of wireless communication devices, with the beacon frame indicating a group identifier associated with a group of wireless communication devices of the set of wireless communication devices, where one or more wireless communication device associated with group is/are in powersave. An announcement frame may also be transmitted to the set of wireless communication devices, with the announcement frame indicating buffered packet to one or more wireless communication devices of the group of wireless communication devices associated with the group identifier. A response may be received from one or more wireless communication devices. A MIMO data packet may be transmitted to one or more wireless communication device in response to the receiving of the response.


An envelope extracting apparatus includes: a clock extracting device arranged to extract a clock signal of a receiving modulation signal according to a first biasing voltage; and an edge detecting device arranged to generate a detecting signal to indicate an envelope edge of the receiving modulation signal according to a delayed clock signal of the clock signal and a second biasing voltage; wherein the second biasing voltage or a delay time of the clock signal is adjustable.


An envelope extracting apparatus includes: a clock extracting device arranged to extract a clock signal of a receiving modulation signal according to a first biasing voltage; and an edge detecting device arranged to generate a detecting signal to indicate an envelope edge of the receiving modulation signal according to a delayed clock signal of the clock signal and a second biasing voltage.


An envelope extracting apparatus includes: a clock extracting device arranged to extract a clock signal of a receiving modulation signal according to a first biasing voltage; and an edge detecting device arranged to generate a detecting signal to indicate an envelope edge of the receiving modulation signal according to a delayed clock signal of the clock signal and a second biasing voltage; wherein the second biasing voltage or a delay time of the clock signal is adjustable.


A method and associated apparatus for determining residue transform tree for color components in a video sequence are provided. The method includes the steps of: determining an individual transform depth increase for each color component; and determining a transform tree for each color component according to the individual transform depth increase associated with each color components.


A method of indoor positioning using Fine Timing Measurement (FTM) avoiding co-located access point (AP) is proposed. In a wireless local area network, an AP obtains neighboring AP location information and determines a list of co-located BSSIDs. In a first option, an STA first selects an AP and query for AP location and co-located BSSID information using ANQP (Access Network Query Protocol). In a second option, the STA first selects an AP and initiates FTM protocol with the selected AP and thereby obtaining AP location and co-located BSSID information. Upon obtaining the AP location and the co-located BSSID list, the STA can initiates FTM protocol with additional non-co-located BSSs for determining an accurate STA location.


Patent
MediaTek | Date: 2017-05-17

A method and apparatus for deriving a sub-block motion vector for the current sub-block based on a motion-model function depending on the current sub-block location are disclosed. The derived sub-block motion vector is then used for encoding or decoding the sub-block. The motion-model function may correspond to an affine motion-model function or a bilinear motion-model function. In one embodiment, a new Merge mode can be used to apply prediction of a current block by applying prediction on the sub-block basis using the sub-block motion vector derived from the motion-model function. In another embodiment, an additional inter prediction mode can be used to apply prediction of a current block by applying prediction on the sub-block basis using the sub-block motion vector derived from the motion-model function.


A method and apparatus of deriving a temporal derived motion vector in a second direction based on a given motion vector in a first direction for motion vector prediction are disclosed. According to the present invention, a given motion vector for a current block is determined, where the given motion vector points from the current block in a first direction. A reference motion vector associated with a first reference block in a first reference frame is identified. Then, based on the reference motion vector and the given motion vector, a temporal derived motion vector is derived. The temporal derived motion vector points from the current block to a second reference block in a second reference frame in a second direction different from the first direction. The temporal derived motion vector is then used as one predictor for encoding or decoding of the motion vector of the current block.


Patent
MediaTek | Date: 2017-03-08

A method to indicate a rate is proposed. In this method, a first wireless device determines a rate indicator and then transmits a packet including the rate indicator to a second wireless device. In one embodiment, the rate indicator can be determined by the first wireless device. In another embodiment, the second wireless device can suggest a rate and send it to the first wireless device.

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