1. An electrically powered vehicle comprising:
a boost converter that boosts a power supply voltage and outputs a boosted voltage;
an inverter that receives the boosted voltage from the boost converter and controls a rotating electric machine for travel; and
a control device that performs control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both an accelerator and a brake with a brake pedal are not operated to be on, and which does not perform control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both the accelerator and the brake with the brake pedal are operated to be on.
2. The electrically powered vehicle of claim 1, further comprising:
an internal combustion engine;
an additional rotating electric machine;
a power distribution mechanism that distributes power produced by the internal combustion engine to the additional rotating electric machine and wheels; and
an additional inverter that receives the boosted voltage from the boost converter and controls the additional rotating electric machine;
wherein the rotating electric machine applies driving force to the wheels.
3. A control device of an electrically powered vehicle including a boost converter that boosts a power supply voltage and outputs a boosted voltage and an inverter that receives the boosted voltage from the boost converter and controls a rotating electric machine for travel, the control device comprising:
an acquisition unit that acquires information indicating a rotating state of the rotating electric machine, information indicating an operating state of an accelerator, and information indicating an operating state of a brake pedal; and
a control unit that performs control, based on the information acquired by the acquisition unit, to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both the accelerator and the brake with the brake pedal are not operated to be on, and which does not perform control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both the accelerator and the brake with the brake pedal are operated to be on.
4. The control device of an electrically powered vehicle of claim 3, further including an internal combustion engine, an additional rotating electric machine, a power distribution mechanism that distributes power of the internal combustion engine to the additional rotating electric machine and wheels, a boost converter that boosts a power supply voltage and outputs a boosted voltage, an additional inverter that receives the boosted voltage from the boost converter and controls the additional rotating electric machine, and wherein the rotating electric machine applies driving force to the wheels.
5. A computer readable medium storing a program causing a computer to execute a process for an electrically powered vehicle including a boost converter that boosts a power supply voltage and outputs a boosted voltage and an inverter that receives the boosted voltage from the boost converter and controls a rotating electric machine for travel, the process comprising:
acquiring information indicating a rotating state of the rotating electric machine, information indicating an operating state of an accelerator, and information indicating an operating state of a brake pedal; and
performing control, based on the information acquired by the acquisition unit, to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both the accelerator and the brake with the brake pedal are not operated to be on, and which does not performing control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both the accelerator and the brake with the brake pedal are operated to be on.
6. The computer readable medium storing a program causing a computer to execute a process for an electrically powered vehicle of claim 5, further including an internal combustion engine, an additional rotating electric machine, a power distribution mechanism that distributes power of the internal combustion engine to the additional rotating electric machine and wheels, an additional inverter that receives the boosted voltage from the boost converter and controls the additional rotating electric machine, and wherein the rotating electric machine applies driving force to the wheels.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An adaptive chrominance compensation method for the optimizing treatment of color images of electronic equipments, according to real-time recognition of primary-color voltages Er, Eg and Eb in the signals of original equipment and the location of color-gamut cells they belong to, voltage compensation is then performed based on the preset adaptive corresponding relations and compensation parameters, so as to achieve the chrominance compensation for imaging colors, wherein said method comprising the following steps:
dividing all the colors that can be reproduced by the equipment into T color-gamut cells (42 and 46), according to certain multiples of the size of Macadam Ellipse, in CIE chromaticity diagram and rgb chromaticity diagram, selecting the color represented by the central point of color-gamut cell (42 and 46) as the chrominance sample (SCj) of this cell, and stipulating a white color-gamut cell U1 as the cell whose chrominance sample is white light D65 with correlated color-temperature 6500K+18MPCD Minimum Perceptible Color Difference;
acquiring actual-object samples and signals of actual-object samples that can reflect the color characteristics in the predetermined area of the cell for each color-gamut cell;
reproducing the same actual-object sample on the screens of testing equipments according to different chrominance characteristics, namely, color hues, chroma, brightness and background, carrying out the test for contrasting and evaluating the viewing effect of the images and choosing the most optimized image as the best color reproduction image of the actual-object sample; choosing the best image of color reproduction (SOEj) from the optimized images of all the actual-object samples in the cell Uj according to some predetermined rules; choosing the best image of color reproduction for each color-gamut cell in the same way; and using the optimized color of chrominance sample (SOE1) that represents the best image of color reproduction in white color-gamut cell U1 as optimized white reference DE for white balance;
testing the optimized compensation coefficients of primary-color voltages when the common image of actual-object sample (SOCj) in color-gamut cell Uj is converted into the optimized image among the actual-object samples (SOEj) under the status of white balance DE, wherein said coefficients are increasing rate crj for red-primary-color voltage, increasing rate cgj for green-primary-color voltage and increasing rate cbj for blue-primary-color voltage and measuring the optimized compensation coefficients of primary-color voltages for all the T color-gamut cells;
setting the relationship of the optimized converting functions, which correspond to those optimized compensation coefficients of T groups of primary-color voltages, into fiducial-voltage generators or fiducial memories according to pre-acquired parameters of optimized white reference DE and said optimized compensation coefficients of each color-gamut cell (46), and performing adaptive compensation for each color-gamut cell (46) according to these optimized converting functions and different-amplification; recognizing the stochastic imaging signals received by the equipment in real time firstly and locating said signal to the color-gamut cell they belong to, in the application of the equipment, and then performing voltage compensation basing on preset optimized converting functions for this color-gamut cell.
2. The method according to claim 1, wherein each of said T color-gamut cells (46) is a small rectangular area whose sides are parallel to r axis and g axis of rgb chromaticiy diagram.
3. The method according to claim 1, wherein said test for contrasting and evaluating the viewing effect of the images further comprising the following steps:
having viewers to watch and remember the relative actual objects or original images before they take the contrast and evaluation test on the different images of the actual-object samples reproduced on equipment screens;
only selecting those images that approximately match with the viewers’ memory colors as the candidates for the best image, and giving pleasure grades to each candidate, after the viewers watched the different images of the actual-object samples reproduced on the screen;
comparing each image with all other images that belong to the same color-gamut cell, and giving higher grade to the one that viewers feel more beautiful in every two comparing images;
selecting one of the images as the best image of color reproduction (SOEj) for color-gamut cell Uj from all the optimized images of actual-object samples in that color-gamut cell, according to the following preset rule: the image selected by this plan accords with the common accepted conclusions made by multiple disciplines such as psychology and physiology; it meets the requirements that correction needs to be done in order to eliminate the affections of contrast effect of apposition colors; the chrominance deviation of this plan is in the range of the preset acceptable errors; in addition to the above requirements, the image receives the highest grades during each comparison of pleasure grade.
4. The method according to claim 1, wherein said different-amplification adaptive compensation in each color-gamut cell (46) comprises at least two different parameters’ optimized converting.
5. An adaptive chrominance compensation apparatus, which can optimize imaging colors of electronic equipments, according to real-time recognition of primary color voltages Er, Eg, Eb in the signals of original equipment and the location of color-gamut cells they belong to, voltage compensation is then performed based on the preset adaptive corresponding relations and compensation parameters, so as to achieve the chrominance compensation for imaging colors, wherein said apparatus comprising:
a color-gamut cells dividing and actual-object samples locating means for dividing all the colors that can be reproduced by the equipment into T color-gamut cells (46) in CIE chromaticity diagram and rgb chromaticity diagram, according to certain multiple of the size of Macadam Ellipse, establishing the relationship between the primary-color voltages Er, Eg, Eb of any signals and the color-gamut cell they belong to, locating this actual-object sample into the color-gamut cell it belongs to automatically according to the recognition results of each actual-object sample’s primary-color voltages Er, Eg and Eb, and thus acquiring and storing the actual-object samples and their signals that can reflect the color characteristics in the predetermined area of the color-gamut cell;
a testing means for comparing, selecting and testing the actual-object samples for each and every color-gamut cell, so as to acquire the best image of color reproduction and optimized compensation coefficients for primary-color voltages for all the T color-gamut cells.
a compensation means for recognising in real time the primary-color voltages Er, Eg, Eb of stochastic imaging signals received by the electronic equipment and locating them automatically into the color-gamut cell they belong to according to said corresponding relationship between signal’s primary-color voltages Er, Eg, Eb and the color-gamut cell they belong to as well as the corresponding relationship between color-gamut cell and optimized compensation coefficients, and performing the different-amplification adaptive compensation for each said color-gamut cell (46) according to said optimized converting functions of relative color-gamut cell.
6. The apparatus according to claim 5, wherein each of said T color-gamut cells (46) is a small rectangular area whose sides are parallel to r axis and g axis of rgb chromaticity diagram.
7. The apparatus according to claim 5, wherein said different-amplification adaptive compensation in each color-gamut cell (46) comprises at least two different parameters’ optimized converting.
8. The apparatus according to claim 5, wherein said compensation means comprises several compensators (4, 6, 11, 13, 18 and 20) that are corresponding to all the optimized compensation coefficients.
9. The apparatus according to claim 5, wherein said compensation means also comprises:
an input circuit comprising transistors (Pr1, Pr2, Pg1, Pg2, Pb1, Pb2) and resistors (Rr1, Rg1, Rb1) for inputting the signals such as primary-color voltages (Er, Eg, Eb) or color-minus-monochrome voltages ((Er\u2212Y), (Eg\u2212Y), (Eb\u2212Y)), and inputting this group of signals into primary-color-voltage generator (9) and one end of each voltage-superposed resistor;
a zero-reference-voltage generator (16) for converting the input black-level signal or brightness signal into a zero-reference-voltage signal with the same amplitude as that of the zero-level of primary-color voltages and then sending it to primary-color-voltage generator (9);
a primary-color-voltage generator (9) for converting the input signal comprising primary-color voltages or color-minus-monochrome voltages and zero-reference-voltage into an accurate primary-color-voltage signal by subtraction operation and sending this primary-color voltage to recognition-voltage generator (2) and each compensator;
a recognition-voltage generator (2) for converting the input primary-color-voltage signal into a group of recognition signals with the information of proportions of primary colors and then sending them to each location controller;
location controllers (3, 5, 10, 12, 17 and 19) comprising fiducial-voltage generators or fiducial memories, comparison units and recognition units, which will compare the input recognition signals with the preset or pre-stored fiducial voltage, for locating the color-gamut cell Uj to which this primary color proportion signal belongs according to the corresponding relationship between the primary color proportions and the color-gamut cell, and then corresponding location controllers outputting controlling signals and turning on a group of compensators that belong to the located color-gamut cell Uj, in which the outputs of this group of compensators are red-primary-color compensation current with value of crjErRr2, green-primary-color compensation current with value of cgjEgRg2 and blue-primary-color compensation current with value of cbjEbRb2,
voltage-superposed resistors, comprising resisters Rr2, Rg2 and Rb2, getting a compensated red-primary-color voltage (Er+crjEr) at the end of resistor Rr2 where the output circuit is connected, by adding a compensation voltage crjEr across resistor Rr2 created by red-primary-color compensation current with said signal Er from the input circuit; getting a compensated green-primary-color voltage (Eg+cgjEg) at the end of resistor Rg2 where the output circuit is connected, by adding a compensation voltage cgjEg across resistor Rg2 created by green-primary-color compensation current with said signal Eg from the input circuit; and getting a compensated blue-primary-color voltage (Eb+cbjEb) at the end of resistor Rb2 where the output circuit is connected, by adding a compensation voltage cbjEb across resistor Rb2 created by blue-primary-color compensation current with said signal Eb from the input circuit;
an output circuit comprising transistors Nr, Ng and Nb and resistors Rr3, Rg3 and Rb3, forming three emitter-followers, outputting said compensated primary-color voltages.