Bestechnic (shanghai) Co., Ltd.

Shanghai Huali Microelectronics Corporation

Semiconductor Manufacturing International (shanghai) Corporation

Beijing Xiaomi Pinecone Electronics Co., Ltd.

Fei Luo

Weifeng Tong

Liang Zhang

Qianli Ma

Junhong Liu

Lei Yang

Guanghui Yang

Tianxu Wu

Bin Luo

Hua Li

Cheng Yang

Mingliang Xu

Jingang Wu

Wenjie Li

Hua Zeng

GuoFang Xuan

Yifeng Xiao

Liheng Zhou

Guanqie Gao

Chunxia Xiao

Embodiments of wireless audio systems and methods for operation mode switch of wireless headphones are disclosed herein. In one example, a wireless audio system includes a first wireless headphone and a second wireless headphone. The first wireless headphone is configured to establish a first short-range wireless link with an audio source; transmit, to a second wireless headphone, link information associated with the first short-range wireless link; and remove the first short-range wireless link with the audio source in response to the second wireless headphone successfully establishing a second short-range wireless link with the audio source based on the link information. The second wireless headphone is configured to receive, from the first wireless headphone, the link information associated with the first short-range wireless link; and establish the second short-range wireless link with the audio source based on the link information.

Operation mode switch of wireless headphones

A method realizes synchronous playing of audio data from an audio source by two or more wireless speakers. The method includes receiving at each of the wireless speakers first audio data packets sent by the audio source and determining a respective first time point for the receiving of the first audio data packets; processing the first audio data packets at each of the wireless speakers to generate respective second audio data packets, the second audio data packets each including audio data to be played with a fixed data length; setting a delayed play time and obtaining a playing time point at each of the wireless speakers, the obtaining of the playing time point being based on the respective first time point and the respective delayed play time; and playing the second audio data packets at each of the wireless speakers at the respective playing time point.

Method, device, loudspeaker equipment and wireless headset for playing audio synchronously

A method for synthesizing an omni-directional parallax view includes: obtaining parallaxes between an original image data pair, wherein the parallaxes include a horizontal parallax and a vertical parallax; determining a target viewpoint based on a base line between the original image data pair; obtaining a target pixel of the target viewpoint in original image data based on the horizontal parallax and the vertical parallax; and synthesizing a target view of the target viewpoint based on the target pixel.

Method and apparatus for synthesizing omni-directional parallax view, and storage medium

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, wireless transceiver includes a first antenna, a second antenna, and a radio frequency (RF) module. The first antenna and second antenna are configured to establish communication links with an audio source and another wireless transceiver. The RF module is configured to receive audio information from the audio source based on a first communication link using the first antenna and the second antenna and receive audio play information from the another wireless transceiver based on a second communication link using the first antenna and the second antenna. A data transmission proportion of the first communication link allocated between the first antenna and the second antenna is dynamically adjusted based on qualities of data communicated by the first antenna and the second antenna through the first transmission link. A data transmission proportion of the second communication link allocated between the first antenna and the second antenna is dynamically adjusted based on qualities of data communicated by the first antenna and the second antenna through the second transmission link.

Wireless audio system and method for wirelessly communicating audio information using the same

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a first wireless headphone and a second wireless headphone. The first wireless headphone is configured to receive, from an audio source, audio information using a first type of short-range wireless communication; and in response to successfully receiving the audio information from the audio source, transmit an audio information message including the audio information using a second type of short-range wireless communication different from the first type of short-range wireless communication. The second wireless headphone is configured to receive, from the audio source, the audio information using the first type of short-range wireless communication; receive, from the first wireless headphone, the audio information message using the second type of short-range wireless communication; and in response to at least one of (i) successfully receiving the audio information from the audio source and the first wireless headphone successfully receiving the audio information from the audio source, or (ii) successfully receiving the audio information message from the first wireless headphone, transmit an acknowledgement message to the audio source.

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, wireless transceiver includes a first antenna, a second antenna, and a radio frequency (RF) module. The first antenna is configured to establish a first wireless communication link with an audio source. The second antenna is configured to establish a second wireless communication link with another wireless transceiver. The RF module is configured to receive audio information from the audio source using the first wireless communication link and transmit audio play information to the another wireless transceiver using the second wireless communication link. A first RF radiation field of the first antenna has a higher intensity in a first direction than a second direction orthogonal to the first direction, and a second RF radiation field of the second antenna has a higher intensity in the second direction than the first direction.

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a first and a second wireless headphones. The first wireless headphone is configured to receive, from an audio source, audio information using a short-range wireless communication, and in response to successfully receiving the audio information from the audio source, transmit a first error correcting message including an error correcting code generated based on the audio information to a second wireless headphone. The second wireless headphone is configured to receive the audio information from the audio source using the short-range wireless communication, attempt to correct the received audio information based on the first error correcting message, and determine that the received audio information fails to be corrected. In response to the determination, the first wireless headphone is further configured to transmit a second error correcting message including the received audio information to the second wireless headphone.

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a first wireless headphone and a second wireless headphone. The first wireless headphone is configured to receive, from an audio source, audio information using a first type of short-range wireless communication; in response to successfully receiving the audio information from the audio source, generate an error correcting code based on the audio information; and transmit an error correcting message including the error correcting code without transmitting the audio information. The second wireless headphone is configured to receive, from the audio source, the audio information using the first type of short-range wireless communication; receive, from the first wireless headphone, the error correcting message including the error correcting code; and in response to successfully receiving the audio information directly from the audio source or based on the error correcting code, transmit a first status message (STAT) to the first wireless headphone. The first wireless headphone is further configured to receive, from the second wireless headphone, the first STAT. One of the first and second wireless headphones works in a snoop mode to communicate with the audio source based on communication parameters of another one of the first and second wireless headphones.

Embodiments of wireless audio systems, wireless transceivers, and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a primary wireless transceiver and a secondary wireless transceiver. The primary wireless transceiver includes a first radio frequency (RF) module configured to transmit, audio information at a first frequency. The primary wireless audio transceiver further includes a second RF module configured to transmit the audio information at a second frequency. The secondary wireless audio transceiver includes a third RF module configured to receive, the audio information at the first frequency. The secondary wireless transceiver further includes a fourth RF module configured to receive the audio information at the second frequency. At least one of the primary wireless audio transceiver or the secondary wireless audio transceiver includes a control module configured to determine a criterion corresponding to switching a transmission frequency from the first frequency to the second frequency is met. The control model is further configured to switch the transmission frequency.

Wireless audio transceivers

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a first wireless headphone and a second wireless headphone. The first wireless headphone is configured to establish a first short-range wireless link with an audio source and a second short-range wireless link with a second wireless headphone; transmit, to the audio source over the first short-range wireless link, a first global acknowledgement (ACK) message indicative of whether the first wireless headphone and the second wireless headphone successfully receive audio information transmitted by the audio source; in response to a mode switch event, transmit, to the second wireless headphone over the second short-range wireless link, status information associated with the first short-range wireless link; in response to the second wireless headphone successfully receiving the status information, transmit, to the second wireless headphone over the second short-range wireless link, a switch start message to switch modes of the first and second wireless headphones; and after transmitting the switch start message, transmit, to the second wireless headphone over the second short-range wireless link, a first local ACK message indicative of whether the first wireless headphone successfully snoops the audio information. The second wireless headphone configured to establish a third short-range wireless link with the audio source based on link information associated with the first short-range wireless link for snooping the audio information transmitted over the first short-range wireless link; receive, from the first wireless headphone over the second short-range wireless link, the status information; receive, from the first wireless headphone over the second short-range wireless link, the switch start message; after receiving the switch start message, receive, from the first wireless headphone over the second short-range wireless link, the first local ACK message; and transmit, to the audio source over the third short-range wireless link based on the status information, a second global ACK message indicative of whether the first wireless headphone and the second wireless headphone successfully receive the audio information based on the first local ACK message.

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a first and a second wireless headphones. The first wireless headphone is configured to receive, from an audio source, audio information using a short-range wireless communication; in response to successfully receiving the audio information, generate an error correcting code based on the audio information; and transmit an error correcting message including the error correcting code. The second wireless headphone is configured to receive, from the audio source, the audio information using the short-range wireless communication; receive, from the first wireless headphone, the error correcting message including the error correcting code; and in response to successfully receiving the audio information based on the error correcting code, transmit an ACK message to the audio source. One of the first and second wireless headphones works in a snoop mode to communicate with the audio source based on communication parameters of another one of the first and second wireless headphones.

A test layout, a system, and a method for detecting leakage current are disclosed. The test layout module includes M PN junction diode leakage current test units formed in the FEOL process, parallel-connect with a classical leakage current test unit formed in the metal layer; wherein, P-regions of the PN junction diodes are connected to a high potential, N-regions of the PN junction diodes are connected to a low potential, the junction areas of the PN junction diodes are different each other, each of the PN junction diode leakage current test units is controlled by one switch respectively, the positive integer M is greater than or equal to 1. Through paralleling the PN junction diodes formed in the FEOL process with the classical leakage current test unit in the metal layer, not only the required test layout area utilized to detect the leakage current in the metal layer is reduced, but also the detecting accuracy is further enhanced.

System, method and test layout for detecting leakage current

The present invention discloses a method of forming an annular storage structure of a magneto-resistive memory. It relates to the manufacturing process of the semiconductor devices. The method includes the following steps: a silicon oxide layer and a silicon nitride layer is formed on the thin-film layer of a magnetic channel junction; a circular silicon nitride trench is formed; a poly-silicon thin film is deposited to cover the silicon nitride trench, the annular poly-silicon structure is formed by plasma etching back; the remaining silicon nitride thin film is removed to form the annular poly-silicon hard mask; the poly-silicon hard mask is used when the magnetic channel junction thin film layer is etched by plasma etching. At last, the unit structure of magnetic channel junction is formed. The advantages of the above technical solutions are: the diameter of the round photo-resist pattern is larger; it is possible to use the photo-etching with normal resolution, thus the method reduces the cost of production enhances market competitiveness and obtains significant economic benefits.

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Shanghai, China

Fei Luo