RU2065204C1 - Device for input and output of pictures of objects - Google Patents

Abstract

FIELD: TV devices. SUBSTANCE: device has TV detector 1, analog- to-digital converter 2, multiplexer 7, memory unit 3, digital-to-analog converter 4, video control unit 5, address generation unit 6. Dividers unit 8 is introduced to accomplish the goal of invention. EFFECT: possibility to scale TV picture. 1 dwg

Description

 The invention relates to television and can be used in image research.

 A device (1) is known that contains a television sensor, an analog-to-digital converter, a random access memory, an address generation unit, a digital-to-analog converter, and a video control unit.

 The device provides for storing images and their output to the screen of the video control unit.

 The disadvantage of this device is the inability to change the scale of the television image.

 The closest in technical essence is the device (2) containing a television sensor, an analog-to-digital converter, a multiplexer, a random access memory unit, a digital-to-analog converter and a video control unit and an address generation unit connected to the memory unit.

 The disadvantage of this device is the inability to change the scale of the television image.

 The objective of the invention is to provide an input-output device with the ability to change the scale entered in the memory of the television image.

 The block diagram of the device shown in the drawing.

 The device contains a television sensor 1 (TV sensor), analog-to-digital converter 2 (ADC), a random access memory unit 3, a digital-to-analog converter 4 (DAC), a video control unit 5, an address generation unit 6, a multiplexer 7, a divider unit 8.

 Blocks 1, 2, 3, 4, 5 are connected in series. The first and second control inputs of the device are connected to the control input of the multiplexer and the recording control input of block 3.

 The device operates as follows.

 The video signal from the output of sensor 1 enters through the ADC 2, where it is converted into digital form by block 3, the TV sensor 1, also generates the clock signals: (SSI) and frame (CSI) clock pulses, as well as sampling pulses along the line.

 The clock signals are fed to the inputs of blocks 2, 4, 6, 7, 8 to synchronize the operation of the device, the television image is stored when a signal is received at the control input of block 3 that allows recording corresponding to the frame of the recorded image. The address signals for block 3 are generated by block 6, consisting of a row counter and a column counter. When accessing block 3 in the television standard, block 6 generates row and column addresses for the RAM matrix using the clock received at its sync input. In this case, the column counter counts the sampling pulses along the line and is reset to the initial state of the SSI, and the line counter counts the clock pulses of the SSI and is reset to the initial state of the SSI. Thus, the appeal is organized according to the matrix principle: the address of the row and column uniquely determines the cells of the matrix of block 3.

 In normal mode, the clock input of block 6 through the multiplexer 7 receives the clock signals from the sensor 1.

 In the image scaling mode (when applying the corresponding signal to the control input of the multiplexer 7), the clock signals arrive at the clock input of block 6 through the blocks 7 and 8 connected in series.

 Block 8 includes dividers that produce a division of the sequence of sampling pulses along the line and the SSI sequence (the period of repetition of the CSI by block 8 does not change).

 As a result, block 6 changes the addresses in accordance with the division coefficient n 1, 2, k, depending on the design of the dividers in block 8, therefore, in the scaling mode, each image element entered in block 3 is displayed on the screen of block 5 in the scale p1.

 A complete TV signal for block 5 is formed by converting the digital signal into an analog form in DAC 4.

 Thus, the introduction of new features allows you to expand due to the introduction of a zoom mode of the entered image.

Claims (1)

 A device for input and output images of objects containing a television sensor, the first output of which is connected to the information input of the analog-to-digital converter, the second output of the television sensor is connected to the clock inputs of the analog-digital and digital-to-analog converters, the control input of the multiplexer is the first control input of the device, the output of the forming unit the address is connected to the address input of the random access memory block, the recording control input of which is the second control input of the device a, the output of the digital-to-analog converter is connected to a video control unit, characterized in that the device comprises a divider unit, the output of which is connected to the information input of the multiplexer, the output of which is connected to the sync input of the address generation unit, the output of the analog-to-digital converter is connected to the information input of the RAM block, output which is connected to the information input of the digital-to-analog converter, the second output of the television sensor is connected to the sync inputs of the multiplexer and unit d residents.