33results about How to "Increase the number of bits" patented technology

The invention discloses an optimization method of ABR video coding code rate control. The method comprises quantification parameter optimization steps for a current coding frame as follows: obtaining coding information of a coded frame; obtaining an actual code rate of the current coding frame and a quantification parameter of the current coding frame according to the coded frame information; obtaining a code rate control error of the current coding frame; and adjusting the quantification parameter of the current coding frame that whether the code rate control error of the current coding frame is less than a set error is determined, if the code rate control error of the current coding frame is less than the set error, whether the current coding frame is a key frame is determined, if the current coding frame is the key frame, the quantification parameter is reduced in an error scope, and the bit number of the current coding frame is increased, if the current coding frame is not the key frame, the quantification parameter is increased in the error scope, and the bit number of the current coding frame is reduced, and, if the code rate control error of the current coding frame is greater than or equal to the set error, the optimization steps of the quantification parameter of the current coding frame are ended. The method can effectively reduce the code rate control error.

In a counter circuit of a control signal generating circuit, a selector circuit selects under control which is in accordance with a selector circuit control signal (CTR) a predetermined one in a signal VSYNC and a signal HSYNC, which are pulse signals, so as to input a pulse signal thus selected to a counter. The counter outputs a counted result of pulses of the inputted pulse signal. By use of the counted result, a VSYNC synchronization signal generating circuit or an HSYNC synchronization signal generating circuit generates a control signal to control the driving of image display.

The invention provides a power optimization method for a full duplex bidirectional relay system under asymmetrical speeds. The method comprises the following steps: step 1, a full duplex bidirectional relay communication system is established, and power distribution factors are initialized; step 2, state information of each node is measured, and the state information includes power of reception and transmission of each node, self-interference information of each node and channel coefficients during data exchange between the nodes; step 3, whether the power distribution factors need to be adjusted is determined according to the state information of the nodes and values of the power distribution factors, and the values of the power distribution factors are adjusted according to the determination result until an overall speed sum of the full duplex bidirectional relay communication system is the maximum; and step 4, power resources are distributed according to a power distribution scheme when the overall speed sum is the maximum. According to the invention, a relay cooperation communication mechanism in a full duplex mode is established; time slot cost is reduced; and the system throughput and transmission efficiency are increased.

The invention discloses an implement method of a high-speed shared control channel under a multiple-input multiple output mode, comprising the steps: a high-speed shared control channel structure is expanded under a condition that the multiple-input multiple-output mode is a double-current multiple-input multiple-output mode, and a size index and a modulating mode of an auxiliary transmission block are indicated under the double-current multiple-input multiple-output mode by using an invalid state of a channelizing code set mark in a mark channel structure. By the technical scheme, the implement method can satisfy the requirement of double-current transmission under the multiple-input multiple-output mode, an HS-SCCH channel bit number has no need to be additionally increased; and the coding gain of the prior HS-SCCH can not be reduced.

The invention discloses a non-destructive hidden transmission method for on-board data. The method comprises the following steps of: embedding low-speed data in an original high-speed remote sensing carrier image by modifying the adjacent-pixel difference histogram of the on-board high-speed remote sensing carrier image, and performing downlink transmission by virtue of a satellite high-speed data transmission system. A ground receiving end can correctly extract the low-speed data from the carrier image, and recover the original high-speed remote sensing carrier image in a non-destructive manner. According to the method disclosed by the invention, the utilization rate of a satellite data transmission system is increased and the hidden performance of on-board data transmission is enhanced on the premise of no increase of the complexity and the information transmission speed of the satellite data transmission system. Experimental results indicate that a high pure load embedding capacity in case of ensuring a good hidden performance can be obtained according to the method disclosed by the invention.

The invention discloses a biometric key generating method adapting to dynamic quantization. The method comprises the following implementation steps: 1, acquiring a human electrocardiograph signal, and performing wavelet transform de-nosing and normalization processing on the human electrocardiograph signal; 2, performing R-wave detection on the normalized electrocardiograph signal, and extracting a pulse spacing feature; 3, performing statistics to obtain a mean value and a variance of the pulse spacing feature, and calculating information entropy of the pulse spacing feature according to the variance; 4, adaptively and dynamically determining a quantization bit of the pulse spacing feature according to the information entropy of the pulse spacing feature; 5, performing quantization coding on pulse spacing according to the determined quantization bit to generate a biometric feature sequence; and 6, performing key negotiation on the generated biometric feature sequence through a sensor node and a coordinator node to generate a biometric key shared by the two nodes. Through adoption of the method, key randomness is ensured; the biometric key generation efficiency is increased; and the fault probability of identity authentication is lowered. The method can be applied to authentication among wireless body area network nodes.

The invention provides a backlight module circuit and a liquid crystal display device. The backlight module circuit comprises a plurality of partition backlight units and a control unit. Any partitionbacklight unit comprises a light-emitting diode in the light-emitting diode main area and a light-emitting diode in the light-emitting diode auxiliary area; the light emitting diode in the light emitting diode main area and the light emitting diode in the light emitting diode auxiliary area are connected to the control unit in parallel. The partition backlight unit is divided into a light-emitting diode main area and a light-emitting diode auxiliary area; a control switch is additionally arranged in each second light emitting diode group in the light emitting diode auxiliary area to adjust the brightness of the light emitting diode auxiliary area, so the gray scale number of the light emitting diodes in the light emitting diode main area and the light emitting diodes in the light emittingdiode auxiliary area after parallel connection is increased, and the backlight unit reaches a higher bit number; and thus, finer picture display of the liquid crystal screen is realized.

The invention relates to a communication method of a spread spectrum modulation based OFDM system. The communication method of the spread spectrum modulation based OFDM system comprises the steps of firstly grouping sub-carriers at a transmitting terminal according to a certain rule; then modulating the serial number of each spreading code, that is, selecting spreading codes by utilizing differentsignal source bit combinations, so as to realize the purpose of improving the transmission rate; and regarding each grouping block as a minimum granularity when a receiving terminal carries out signal detection. In order to reduce the calculation complexity of a maximum likelihood detection algorithm, frequency domain balancing is firstly carried out for each grouping block, then the Euclidean distance in the presence of the current spreading code is calculated, and finally a combination with the minimum Euclidean distance is selected to serve as a final detection result, so that the purposeof reducing the complexity is realized. As the signal source bit is adopted for selection of the spreading codes used by different grouping blocks, the data rate is improved efficiently.

The invention discloses a controlled quantum secure direct communication method based on five particles. A method of sending a particle to a receiver is adopted, and the transmission efficiency of communication is improved by reducing the number of particles transmitted in a quantum channel; and a sender retains 3 particles in the communication process, adopts a quantum state to encode 3 bits of information, thereby improving the encoding capacity, increasing the number of information bits exchanged by both communication parties, and improving the transmission efficiency by 60%.

The invention provides a codebook generation method and device and belongs to the technical field of wireless communication. The codebook generation method is applied to a terminal, and comprises thefollowing steps of when a plurality of PDSCHs (Physical Downlink Shared Channel) received in a current time slot are overlapped in a time domain, generating a codebook, and determining the bit numberand/or the feedback position of the HARQACK needing to be fed back according to hybrid automatic repeat request (HARQ) time sequence information for scheduling the downlink control information of thePDSCH and/or the time when the time domain allocation item corresponding to the PDSCH belongs to in the generation of the semi-static HARQACK codebook. The method is advantaged in that a codebook generation scheme suitable for PDSCH scheduling with time domain overlapping can be provided.

A multiplier of large number modulo multification is prepared as connecting REPC control unit to two write - read control ports of double port SRAM and able control port of REDC data channel separately for write - read control and calculation control; using double port synchronous random storage SRAM to store operation number of A, B, N and R in algorithm as well as intermediate result and final result of operation; using data channel to obtain data from two data write - read ports of double SRAM for finalizing operation of multification and addition of large number in algorithm.

The invention discloses an infrared remote control function signal generator which comprises a single chip, a keyboard, a reference voltage generating circuit and a waveform generator, wherein the infrared remote control function signal generator is characterized by also comprising a remote controller, an infrared receiver, a frequency band conversion controller, a summing circuit and a compression circuit; the remote controller transmits an infrared light signal to the infrared receiver after encoding and modulating the key information; the infrared receiver receives an infrared light signal emitted by the remote controller, converts the infrared light signal into an electric signal, demodulates, decodes, amplifies and outputs a control signal to the single chip; the keyboard outputs the control signal to the single chip; the single chip receives a control signal output by the infrared receiver and/or receives the control signal output by the keyboard, carries out processing conversion and outputs the signal to the frequency band conversion controller, the reference voltage generating circuit and the compression circuit, and the single chip also outputs a waveform selection control signal to the waveform generator.

The invention discloses an array substrate and a display panel. The array substrate comprises at least two pixel unit groups arranged along a first direction and a plurality of data signal lines, each pixel unit group at least comprises two pixel units arranged along a second direction, a preset included angle is formed between the second direction and the first direction, each data signal line is at least connected with one pixel unit, and each pixel unit group is at least correspondingly connected with two data signal lines. By increasing the number of the data signal lines correspondingly connected with the pixel unit groups, the transmission speed and transmission efficiency of data can be effectively improved, the effect of increasing the bit number is achieved, and then finer and smoother picture display is achieved.

The invention discloses a time-frequency pulse-shaping based time-delay multi-carriers modulation and demodulation method. The method is characterized in that a plurality of periodic symbol waveformscapable of carrying information are formed at a sending end; the symbol waveform is formed by H wavelets, a starting point of each wavelet is required to be placed in the lifetime of a first wavelet,and the symbol waveform is obtained by linear superposition after the starting points of the wavelets sequentially move from the starting point of the symbol waveform for a certain time period calleda time delay, wherein the wavelets refer to fundamental waves carrying the information, the fundamental waves comprise waveforms of three intervals, namely a front pulse information wave at an interval Tthetai1, a main wave without the information in an interval tthetai2 and a back pulse information wave in an interval Tthetai3; and the received symbol waveform is balanced, amplitude information of the information carried by the balanced symbol waveform is solved in each front and back pulse information wave interfaces in sequence, and then the amplitude information is converted into a binarynumber to complete a signal demodulation process at the receiving end. The method has the characteristics of higher transmission efficiency, lower demodulation complexity and the like.

The invention discloses a multi-sensor electronic scale landing detection system and method. The system comprises an electronic scale landing detection controller, a plurality of bidirectional multipath electronic switches and an upper computer, and a control switch or the upper computer triggers the electronic scale landing detection controller to control the bidirectional multipath electronic switches so as to realize switching between an electronic scale landing detection mode and a weighing mode. After a electronic scale landing detection mode is entered, a certain weight is loaded and unloaded at each sensor landing point of the electronic scale, whether each landing point falls to the ground and is true or not is judged according to the variation of two no-load signals before and after weight loading of the sensor, and after all the landing points are detected, a normal weighing mode of the electronic scale is entered.