44 results about "Low fidelity" patented technology

Apparatus and methods for digital video data compression via a scalable, multi-resolution approach. In one embodiment, the video content may be encoded using a multi-resolution and/or multi-quality scalable coding approach that reduces computational and/or energy load on a client device. In one implementation, a low fidelity image is obtained based on a first full resolution image. The low fidelity image may be encoded to obtain a low fidelity bitstream. A second full resolution image may be obtained based on the low fidelity bitstream. A portion of a difference image obtained based on the second full resolution image and the first full resolution may be encoded to obtain a high fidelity bitstream. The low fidelity bitstream and the high fidelity bitstream may be provided to e.g., a receiving device.

Embodiments according to the present invention allow multiple parties equipped with telecommunications devices (endpoint devices) of similar or differing audio capabilities to join in a conference call and enjoy the fidelity associated with their equipment. Rather than operating with the frequency and fidelity limits of traditional telecommunications circuits (for example, about 300-3500 Hz), at least a portion of a conference bridge according to the present invention operates at higher frequencies. Conference participants using high-fidelity endpoint devices hear each other with greater clarity and reproduction accuracy. Conference participants using conventional interfaces send and receive lower-fidelity audio, but it affects only their own participation and not that of the entire conference. Participants can connect via for example, wireline, wireless Public Switched Telephone Network (PSTN), or via networks such as the Internet. Multiple voice encoding schemes are accommodated.

The present invention addresses the problem of transmitting optical signals with high extinction ratios using low-power drive signals. At present, low-power optical transmitters typically operate with modulation extinction ratios of, at best, about 10 dB. Embodiments of the present invention may achieve extinction ratios exceeding 20 dB using low-power drive signals of under 20 mW at data rates on the order of Gbits/sec. In addition, the modulation may be achieved with both low-power and low-fidelity drive waveforms, enabling conventional and often noisy high-speed, low-power electronics to generate high-extinction, high-fidelity optical waveforms.

Methods of encoding and decoding video in a low-fidelity mode are described. A coding unit level low-fidelity flag is present in the bitstream to signal whether low-fidelity mode is enabled for a particular coding unit or not. If enabled, then, for that coding unit, the chroma quantization parameter is determined using the luma quantization parameter adjusted by a low-fidelity-mode offset. If not enabled, then, for that coding unit, the chroma quantization parameter is determined using the luma quantization parameter without adjustment by the low-fidelity-mode offset. The chroma quantization parameter is then used in the scaling of quantized chroma transform domain coefficients. Use with luma or other video components is also proposed.

During synchronization of data between a remote device and a local device, it can be determined if a value for a property on a remote device has changed since a last synchronization of the property between the remote device and a local machine. A remote representation of a property value is compared to a local representation associated with the same property value. If the representations are identical, it can be determined that the property value did not change on the remote device. If, however, they are not identical then the property value must have changed after the remote representation was generated.

The invention discloses a multi-fidelity design optimization method for a shell structure of an autonomous underwater vehicle. A multi-fidelity method of an addition bridging function based on a Kriging model is adopted, a multi-start optimization method and a unique self-adaptive model updating strategy are combined, and accordingly design optimization of the shell structure is conducted. The multi-fidelity method is adopted to construct an agent model of which the maximum stress of the shell structure avoids the instability of the critical load, when the agent model is constructed, a large amount of low-fidelity calculation and analysis are used, the precision of the model is improved, and meanwhile the total calculation cost of the optimization process of the structure design is reduced. During sequence optimization, a new agent model is adopted to update the strategy; meanwhile, an optimum point of the current model and an MSE maximum point of the current model are added into high and low fidelity sampling points; through the MSE maximum point of the added model, the global space can be sufficiently explored, and accordingly the total precision of the agent model is improved; accordingly, an optimum design scheme is obtained, and the precision and efficiency of design optimization are improved.

During synchronization of data between a remote device and a local device, it can be determined if a value for a property on a remote device has changed since a last synchronization of the property between the remote device and a local machine. A remote representation of a property value is compared to a local representation associated with the same property value. If the representations are identical, it can be determined that the property value did not change on the remote device. If, however, they are not identical then the property value must have changed after the remote representation was generated.

Rendering of objects techniques can include a method, a system, and a graphics device. The method can include receiving data for one or more objects. The data for each object can include a fidelity code, wherein the fidelity code indicates object fidelity level. The method further can include computing pixels touched by each received object based on a pixel grid associated with the fidelity code of the object. The method further can include providing pixel data for objects having fidelity code indicating a lower fidelity object.

A method for improving characteristics of acoustic and vibration transducers, including integrated microphones and integrated transducers of vibrations, is disclosed. The method consists in the use of a low-fidelity acoustic or vibration transducer for converting an acoustic signal into an analog electrical signal, an analog-to-digital converter for converting the analog electrical signal into a digital signal and a digital processor for correcting and enhancing the latter signal. The resulting digital representation of the acoustic signal is analogous to that attainable by using a high-fidelity transducer.

A component-based adaptation system is provided in which the operation of an application or the data being used by the application is adapted according to an application-specific or a user-specific policy. Following a request for a document by an application, the requested document is retrieved and converted into an application-independent format. The data of the document is then supplied to the application according to a user-specific or application-specific policy. The application of the policy may result in a lower fidelity version or a subset of the data of the requested document being supplied to the application. The policy may also govern the updating of the data supplied to the application. The data supplied to the application may be updated following the occurrence of a tracked event in the application or according to a background policy governing the supply of updated data without reference to the user's operation of the application. All of the adaptations are implemented without modifying the source code of the application and without modifying the document as it is permanently stored on a data server.

The invention relates to a design method of a high-fidelity and non-uniform shark-imitating groove microstructure of a large wind power generator blade, in particular to a method for performing differentiation design on the high-fidelity and non-uniform shark-imitating groove microstructures according to different radial region linear speeds of different fan blades so as to achieve efficient bionic resistance and noise reduction. The design method has the advantages that the fact that 'Reynolds number uses wing chord as characteristic length changes in the wind wheel radial direction' is fully considered when resistance and noise reduction structure design is performed on the large wind power generator blade, the method is scientific and reasonable compared with existing uniform design; the design method of the high-fidelity and non-uniform shark-imitating groove microstructure can ensure efficient actual using effect compared with existing abstract and simplified low-fidelity shark-imitating resistance and noise reduction structure design.

The invention discloses a high-efficiency and high-fidelity transient adhesive tape transfer printing method without an adhesion promoter, and mainly solves the problems of low transfer printing efficiency, low fidelity and high operation difficulty of an existing PDMS-based transfer printing technology. According to the implementation scheme, the method comprises the following steps: 1) preparinga monocrystalline silicon film on an SOI substrate; 2) preparing photoresist anchor points on the monocrystalline silicon thin film, and etching the buried oxide layer of the SOI substrate; 3) picking up a monocrystalline silicon film on the SOI substrate by using a transient adhesive tape; 4) coupling the transient adhesive tape with the monocrystalline silicon film with a receiving substrate; 5) soaking the coupled system in acetone solution, pulling out the soaked system, and drying the soaked system to remove residues dissolved in the adhesive tape, thereby completing high-efficiency andhigh-fidelity transfer printing. The method changes a traditional transfer printing mode, improves the reliability of the transfer printing technology, reduces the process difficulty and cost, achieves the higher transfer printing efficiency and fidelity, and can be used for manufacturing heterogeneous integrated chips.

A wrist-worn device monitors movements of a user with a flexible circuit member. The flexible circuit member is fault tolerant. It may contain extra and/or redundant traces as well as the ability to store data on RAM if the flash memory fails or if some or all trace connections between the processor and flash memory fail. Data stored on the RAM may or may not contain less fidelity. Lower fidelity data may be used to alleviate issues arising if the RAM has less storage capacity than the flash memory.

The embodiment of the invention discloses a dual-viseme mouth shape synthesis method. The method is used for solving the technical problem of lower fidelity of a pronunciation mouth shape of a reproduction part of an existing mouth shape synthesis technology. The method comprises the steps that viseme classification is performed on the pronunciation in standard Chinese, and the pronunciation is classified into 13 categories; corresponding mouth shape videos are recorded according to the viseme classification; a basic mouth shape viseme library is established according to an original mouth shape video; the basic mouth shape viseme library is subjected to dual-viseme treatment to obtain a basic mouth shape dual-viseme library; a speech recognition technology is used for recognizing newly input speech to obtain a text material, after the text material is subjected to initial consonant or simple or compound vowel recognition, the mouth shape viseme corresponding to each initial consonant or simple or compound vowel is searched for in the basic mouth shape dual-viseme library, and the mouth shape visemes are inserted into corresponding points in time to form a discrete mouth shape sequence, and the discrete mouth shape sequence is subjected to smoothing to obtain a continuous mouth shape sequence.