SU462300A1 - Parallel code test pattern sensor - Google Patents

Description

The number of counters 6 is determined by the number of code and auxiliary outputs of the sensor.

In order to reduce the number of elements of the introduced control circuit, the capacity of each counter is equal, where K is the capacitance of the ring counter;

M - the number of "units (" zeros) from each output of the matching node.

By resetting the clock nm-puls generator, the text is reset to the initial state and issuing clock pulses from the driver 3 to the input of the driver 4 is permitted. Due to this, the text starts at the beginning of the phrase from the output of the Output. 1-Out In this, "units (zeros) from each of the code and auxiliary outputs are fed to the inputs of the corresponding ring counters Gi-6, i. During each cycle at the input of each counter, a strictly defined number of "one (zeros)" must be assigned, since it is determined by the structure of the text being formed. To the corresponding input of the circuit "And neireyvivo postavuyot pulses with frequency divider 2.

After issuing the last code combination of the generated test text, each ring counter is ziolien until the determined capacity. From the last output of the distributor of the imaging device 4 of the text of the IW instruction of the circuit “And the 8-n input of the unit 10 for the installation of ring counters receives an enabling pulse. The duration of the pulse is equal to the interval meladu by issuing the last code set of the text of the previous cycle and the first code combination. the text of the last one. If the text is not distorted, i.e., there are no errors in the code combinations on the auxiliary signals, then with the output of the last code combination of the text and the output of the analyzer 7, there appears a ni pulse of inhibiting the operation of the AND 8 circuit. accordingly, the absence of a signal and its output, which is a signal error.

provides continuous issuance of the text of the text.

The impulses of the divider 2, continuously arriving at the corresponding input of the unit 10 for installation of ring counters, after checking the output test text for the presence of a sensation, set to the initial state of the ring counters 6i-6 "before the beginning of the next cycle.

0 In the event of an error in the code combinations or in the auxiliary 1 1X signals at the time of the end of the cycle of the test text, the ring counters are not filled to the specified capacity. Respectively at the end

5 cycles at the output of the analyzer 7 there is no signal to prohibit the operation of the circuit "AND 8. The signal from the {output of the circuit" AND 8 is fed to the input of the display unit 9 and the blocking input of the matching device 5. When

This stops the test text being issued and provides an indication of the presence of

FUNCTIONS.

To restart the sensor, it is necessary to set it to its original state.

Subject invention

The sensor of the test combinations of parallel ode containing a master oscillator connected through a frequency divider and a clock driver to the inputs of the test text generator, whose code outputs are connected to a matching device, the outputs of which are outputs and sensor, characterized in that In order to ensure operative control of work, additionally introduced ring meters, whose outputs are connected to the corresponding inputs, are bitwise connected to the output output buses. m of the analyzer, the output of the latter through the circuit "And is connected to the display unit and the blocking input of the matching

5 of the device, and the unit for setting the counter to its initial state is connected to the frequency divider and the test text generator.