Apparatus for forming video
(57) Abstract:The invention relates to automatic control and computer engineering. The purpose of the invention is the simplification of the device. The inventive device includes formers 1, 2 and 3 addresses, the switch 4, block 5 RAM, block 6 forming the video signal, block 7 comparison. 4 Il. The invention relates to automation, computer and television technology and can be used in systems for displaying graphical information output on the display device of the television type.The purpose of the invention is the simplification of the device.In Fig. 1 presents a functional diagram of the device of Fig. 2 functional diagram of the memory block of Fig. 3 unit of comparison, Fig. 4 television three-dimensional geometric objects.The device contains the first 1, second 2 and third 3 shapers address, the switch 4, block 5 RAM, block 6 forming the video signal, block 7 comparison. The driver of the address contains the registers 8, 9 and 10, an adder 11, a switch 12. There are 13 second, third 14 and fourth 15 control inputs, the fourth group of 16 information inputs, the second information input 17, the first upravlyayut.Unit 5 RAM contains drives 24-27, item, OR 28. Position 29 marked its address input, 30 inputs permissions read (fetch), 31 out of the block.Unit 7 comparison contains registers 32-35, Comparators 36-39.Formula affine display of three-dimensional space to three-dimensional space as follows:
xzua1xe+ b1ye+ C1ze+1< / BR>yzuand2xe+ b2ye+ C2ze+2(1)
zzuand2xe+ b3ye+ C3ze+3< / BR>In the case of a raster scan image affine mappings of the plane into the plane of the screen are reduced to
yizuAND2xei+ 2i. (2)
Similarly, for the amount of expression (1) is reduced to
yizuAND2xei+ 2i; (3)
zizu= AND3xei+ 3i.The device operates as follows.Microprocessor-based transmitter (not showing the/SUP> depending on the relative positions of the simulated image and the visual system of the observer, the numerical values before displaying the next i-th row of the scan image is recorded in the registers 8 and 9.Full address of the current memory cell of the memory block is determined by the value of xi, yi, ziwhich are formed in the same formers 1, 2 and 3.Shaper 1 xzuworks as follows.The calculated values of the coefficients of projective transformations AND1IN1recorded respectively in the registers 8 and 9 in the intervals STP and THD are installed on the first information input of the adder 11, which, depending on the values of significant discharge on its control input is configured to either summation or subtraction, on the information input of the register 10 through the switch 12, which for STP and THD is connected to the second information input to the information input of the register 10.During the display of the i-th line of the image scanning output of the adder 11 is connected to the information input of the register 10, performed on the TPS-triggers the recording of information is hell.The sum AND1xej+ 1i(see (3)) is formed at the output of the register 10, which, acting on the second information input of the adder 11, is formed with a value AND1and gives the result AS1xej+1+ 1ithat after a period of time equal to the period of the frequency of the current at the control input of the register 10, is overwritten on his way out. At the output of the imaging unit 1 is formed xi,jzuequal to the expression (3).Similarly, the outputs of the generators 2, 3 coordinate yzu, zzuformed values of yzui,j, zzui,j. The inputs of the groups 22 and 23 serves values AND2iIN2iAND3iIN3irespectively, which are recorded in the registers of the formers 2 and 3 according to the control signals supplied respectively to the control inputs of these groups 22 and 23. Switch 4 is used for connecting the address input unit 5 memory while displaying information to the outputs of the generators 1, 2 and 3, and when the initial information input in block 5 of RAM to the address bus write personalised.In block 6 the formation of the video information output unit 5 is input.The drives 24-27 listed bitmap image planes, for example, shown in Fig. 4. Through the element 28 to the output unit 5 is transmitted to the information from the drive to the control input of which the signal is present resolution. These control signals are generated in block 7.At the first inputs of the Comparators 36-39 are signals xzui,jor yzui,j, zzui,jand the second is stored in registers 32-35 signs of the respective faces that are there before displaying the image and correspond to the geometric location in three-dimensional coordinate system x, y, z its faces. In the case shown in Fig. 3, these values are x0; z 0; x1y y1.Thus, there is a transformation of the three-dimensional values of the current coordinates of xzu, yzu, zzuproduced according to expressions (3) relevant formers 1, 2, 3, in a two-dimensional coordinate values (numbers of rows and columns) drives 24-27.The proposed device allows to exclude from its structure N processors, processing each face separately, and perform geometric transformations transforming depending on irginia (1)).The proposed solution allows high accuracy to perform geometric transformations generated on a television screen image. Apparatus FOR FORMING a VIDEO signal containing the first to the third formers addresses, switch, block RAM, the output of which is connected to the information input processing unit of the video signal whose output is the output of the device, the address input of the memory block is connected to the output switch, the first and second information inputs which are connected respectively to the outputs of the first and second shapers addresses, information and control inputs from the first to the third formers addresses are respectively informational inputs from the first to the third groups and control inputs from the first to the third groups of devices, information input and control input record block RAM are respectively the first information and control inputs of the device, third information input and the control input of the switch are respectively the second information and control inputs of the device, engraved processing unit of the video signal is trovatelli address, characterized in that it contains a block of comparison, the outputs of which are connected to the enable inputs of the read memory block, the information inputs of the first group unit of comparison is connected to the outputs of shapers address, data inputs of the second group unit of comparison are informational inputs of the fourth group of devices, the second synchronator which are second control inputs shapers address, the fourth information input switch is connected to the output of the third driver addresses.
SUBSTANCE: device has base address selector, registers, delay elements, elements of OR groups, OR elements, memory block, reverse counter, comparator.
EFFECT: higher speed of operation.
FIELD: computer-related technologies.
SUBSTANCE: in accordance to method, progress bar indicator is formed and displayed at display device; progress bar is divided in several portions; beginning parameters of process progress are set; process is launched, while pointer of process progress is set at beginning zero position; value of movement of process progress indicator during a period is calculated as well as current value of movement of process progress indicator, after that process progress pointer is moved for value of movement of process progress indicator; it is checked, whether process has finished execution, and, if it has, process progress pointer is moved to end position on the scale.
EFFECT: detailed indication of progress of processes being executed.
8 cl, 3 dwg
SUBSTANCE: device can be used in medical diagnostics to produce contrast images of tissues in optical coherent tomography. Device for producing contrast optical coherent tomography images has optical coherent tomograph with prod. Prod of optical coherent tomograph is provided with device measuring value of pressure of prod against tested object.
EFFECT: improved efficiency; higher contrast of images of human tissues.
5 cl, 6 dwg