Zgmicro Nanjing Ltd.

Wuxi Vimicro Corporation

Nanjing Zgmicro Company Limited

Sea Pioneers Technologies Co., Ltd.

Sea Pioneer Technologies Co., Ltd.

Bin Xu

Jige Chen

David Xiaodong Yang

Yue Wu

Bo Xia

Li Kang

Jingyang Li

Chao Luo

This application discloses a wet gas flow rate metering method and device thereof. The Coriolis mass flowmeter measures a total mass flow rate Q, a mixed density ρ, and a medium temperature T; a combination of sensors measures a differential pressure ΔP between an inlet and an outlet; a flow rate calculation module performs multi-physical field coupling calculation to obtain an average gas density ρ; according to the mixed density ρ, the average gas density ρ, and a liquid density ρ, a mass liquid content ηof a mixed medium is calculated, and the total mass flow rate Qis corrected by the mass liquid content η, the medium temperature T and the average pressure P to obtain a corrected total mass flow rate Q′. According to the total mass flow rate Q′ and the mass liquid content η, a two-phase flow rate is calculated.

Wet gas flow rate metering method based on a coriolis mass flowmeter and device thereof

A self-excited wet gas flow measuring device, including a housing (), the housing () is provided with a wet gas inlet (), a dry gas outlet () and a liquid outlet (); the middle of the housing () is mounted with a mist catching filter screen to divide a hollow cavity inside the housing () into a dry gas region () and a wet gas region (); the wet gas inlet () and the liquid outlet () are both disposed in the wet gas region (), and the dry gas outlet () is disposed in the dry gas region (); a gas flowmeter () for metering the transmitted dry gas is provided at the dry gas outlet (), a control device () is provided within the wet gas region (), and a detection counting device () is provided at the liquid outlet ().

Self-excited wet gas flow measuring device

A technique for Bluetooth wireless communication is described. According to one aspect of the technique, Bluetooth data from a data source is received in a first wireless device through an antenna and a Bluetooth radio frequency transceiver thereof via a Bluetooth connection with the data source. The Bluetooth data is used to generate a modulation signal according to a narrowband orthogonal multi-carrier modulation technology. The modulation signal is transmitted to a second wireless device through the antenna and the Bluetooth radio frequency. The antenna and the Bluetooth radio frequency transceiver are time-multiplexed by the Bluetooth connection between the first wireless device and the data source, and the wireless connection between the first wireless device and the second wireless device. The described technique can be advantageously used for expanding the distance of Bluetooth wireless propagation of Bluetooth devices.

Techniques for expanding communication range between wireless devices

A Bluetooth receiving method, a Bluetooth receiver, and a Bluetooth audio device are disclosed in the present invention. The Bluetooth receiving method includes: obtaining load data and a CRC result of the load data, and processing the load data based on signal quality of each of a plurality of data segments in one or more pre-stored load data having failed CRC results when the CRC result of the load data fails and a remaining retransmission time for the load data is no longer available. The signal quality is determined based on a signal angle difference before and after judgment for each of the plurality of data segments in each load data during demodulation. By using solutions provided in the present invention, damage caused by a data loss to a voice or audio can be concealed, and data reliability of limited retransmission of Bluetooth can be effectively improved, thereby improving Bluetooth communication performance.

Bluetooth receiving method, bluetooth receiver, and bluetooth audio device

Techniques for broadcasting audio data from one device to multiple devices are described. A sound source device is configured for broadcasting audio data on a plurality of first time blocks in a first broadcast interval, and, one or more receiving and forwarding devices are configured for receiving the audio data from the sound source device and/or other receiving and forwarding devices on one or more second time blocks in a second broadcast interval, where the receiving and forwarding devices forward the audio data on one or more third time blocks in the second broadcast interval after the audio data packet is received correctly. The first broadcast interval is synchronously aligned with the second broadcast interval, and the aligned first and second broadcast intervals are used to transmit the same audio data. Thereby, reliable audio data communication from one point to multiple points can be realized.

Audio data communication system

A method, a device and a system for audio data communication are provided in the present invention. The method comprises: encoding audio data at a fixed interval to obtain a plurality of frames of encoded audio data; broadcasting M frames of the encoded audio data on a broadcast anchor time slot of a first time slot at a predetermined broadcast interval; and playing the audio data after delaying a predetermined time from an anchor of the first broadcast anchor slot. The predetermined time is configured for synchronous playback of the audio data at a local end and one or more opposite ends, the predetermined broadcast interval is M times of the fixed interval, M is a positive integer, the predetermined time is X times of the broadcast interval, and the X is a positive integer. Thereby, synchronous playback of audio data from one point to multiple points can be realized.

Method, device and system for audio data communication

Techniques pertaining to an adaptive/configurable IF wireless receiver are disclosed. Such an adaptive/configurable IF wireless receiver can be used in a Bluetooth device. According to one embodiment of the present invention, a wireless receiver is designed to include a low noise amplifier configured to amplify an input RF signal; an adjustable local RF synthesizer configured to provide a local RF clock signal with variable frequency; a RF mixer configured to down convert the amplified RF signal to an analog IF signal by mixing the local RF clock signal with the amplified RF signal; a filter configured to filter the analog IF signal; an analog to digital converter configured to convert the filtered analog IF signal to a digital IF signal; an adjustable digital local IF synthesizer configured to provide a digital local IF clock signal with variable frequency; a digital mixer configured to down convert the digital IF signal to a baseband signal by mixing the digital local IF clock signal with the digital IF signal; and an IF configuration unit provided to configure the adjustable local RF synthesizer to vary the frequency of the local RF clock signal, and configure the adjustable digital local IF synthesizer to vary the frequency of the digital local IF clock signal.

Growing community of inventors

Jiangsu, China

Bin Xu