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 when the geometric transformation of the formed image. The device contains conditioners addresses, a switch, a memory block, the block forming device, the unit of comparison. 3 C.p. f-crystals, 4 Il.

The invention relates to automatic control and computer engineering and can be used to display graphic information from the computer.

The purpose of the invention is the simplification of the device.

In Fig. 1 shows the structural diagram of the device of Fig.2 block diagram of the memory block of Fig.3 is a structural block circuit diagram of the comparison; Fig.4 explains the principle of the formation of the video.

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, 10, an adder 11, a switch 12, a register 13, block 14 permanent memory, the adder 15.

Unit 5 RAM contains the first 16 to 19 fourth drives, item, OR 20.

Unit 7 comparison sbtet as follows.

When recording information in block 5 RAM address and control signal recording are formed computers (not shown). When reading data from the block 5 in the process of forming the video signal address is formed by blocks 1, 2, 3, and the enable signal fetching unit 7 comparison for each of the drives 16-19. The address switching signal to the input unit 5 RAM memory carries out the switch 4 managed by a computer.

Shapers 1-3 addresses when calculating the read address information of the block 5 is carried out by a projective transformation. For this address is calculated as follows:

Xij=1/(a1i(j-1)+b1i)+c1i,

Yij= 1/(a2i(j-1)+b2i)+c2i, (1) Zij= 1/(a3i(j-1)+b3i)+c3iwhere i is the row number of the raster, i=;

j the column number (the element on the line), j=;

a, b, c conversion factors, which in the beginning of each line are recorded respectively in the registers 8, 9, 10 formers 1, 2, 3 addresses.

In block 6 the formation of the video information output unit 5 is added to the television signal synchromesh, acting on synchroscope unit 6, and postobama in Fig. 4, shown in Fig.2. In drives 16-19 listed bitmap image planes shown in Fig.4. Through the element OR 20 on the output unit 5 is transmitted to the information from the drive to the control input of which the signal is present resolution sampling information from him.

Unit 7 consists of Comparators 25-28, at the first information inputs which are the signals from the outputs of the formers 1, 2, 3, and the second is stored in registers 21-24 signs of the respective faces of the displayed object that is recorded there before displaying and correspond to the geometric location in three-dimensional coordinate system X, Y, Z its faces. In the case shown in Fig.4, these values will be: X=0, Z=0, X=X1Y=Y1.

So it converts the three-dimensional current values of the coordinates X, Y, Z, generated according to expression (1), in a two-dimensional coordinate values (numbers of rows and columns) drives 16-19, which allows limited to three shapers address instead of N shapers, processing each face separately, and to perform a geometric transformation of an image that can be transformed depending on angle of observation.

1. DEVICE FOR CREATION the od which is connected to the information input processing unit of the video signal, the output which is the output of the device, the address input of the memory block is connected to the output switch, the first, second and third information input of which is connected respectively to the outputs of the first, second and third formers address, data inputs and control inputs of the group from the first to the third formers addresses are respectively informational inputs from the first to the third groups and the control inputs of the group of devices, data input and control input record block RAM are respectively the first information and control inputs of the device, the fourth 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 to the third managing input device, wherein the device comprises 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 grupped shapers addresses.

2. The device under item 1, characterized in that the imaging unit address includes first to fourth registers, the first and second adders, the switch and the unit's permanent memory, the output of which is connected to the first information input of the second adder, the second information and the control inputs of which are connected respectively with the first and second outputs of the third register, the output of the second adder is the output of the shaper, the outputs of the first register is connected to information inputs of the first adder, the control input of which is connected to the output of the fourth register is connected to the address input of the unit's permanent memory, the information input of the fourth register is connected to the output switch, the control inputs of the fourth register and switch are respectively first and second control inputs of the shaper, the output of the first adder connected to the first information input of the switch, the second information input connected to the output of the second register, information and control inputs from the first to third registers are respectively informational inputs and control inputs of the group of the former.

3. The device under item 1, characterized by the output unit, the inputs of the element OR is connected to the outputs of the drives, the information input information input unit inputs the control record the control input record block, the address inputs address input unit, and the enable inputs read inputs resolution block was read.

4. The device according to p. 1, wherein the Comparer includes first to fourth registers, first to fourth Comparators, the outputs of which are outputs of the unit, the first information inputs of the Comparators are the first information input unit, the second information inputs of the Comparators are connected to the outputs of registers, information inputs which are second information input unit.

 

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