SU746737A1 - Storage - Google Patents

Description

one

This invention sticks to memory devices.

A memory device on an ultrasonic delay line is known, which contains input signal converters, a delay element, an amplifier, and signal circuits i

However, a disadvantage of this device is that in order to synchronize operation in a wide temperature range, it is necessary to thermostat the delay element or use complex thermo-dependent synchronization devices.

The closest technical solution to the invention is a storage device on an ultrasonic delay line containing a key connected in series, a modulator, a first delay element and a driver of information pulses, the output of which is connected to the input of the modulator, a driver of clock pulses, the first output of which is connected to the inputs modulator, and the input - with the output of the clock selector

Pulses, the input of which is connected to the detector outputI.

However, this device does not provide stable operation in a wide range of temperatures and in the presence of impulse noise,

The purpose of the invention is to increase noise immunity and expand the temperature range of the device.

The goal is achieved by the fact that the device contains a series-connected pulse generator, a driver of control pulses and a write pulse generator, the output of which is connected to one of the key inputs, the input of the generator of pulses is connected to the second output of the clock generator of pulses pulses are connected to one of the inputs of information pulses.

FIG. 1 shows a structural diagram of the proposed device in FIG. 2 is a timeline explaining his work .S

The device contains a cycle of a clock pulse circulation consisting of a serially connected clock pulse generator 1, modulator 2, ..., first) delay element 3, amplifier 4, detector 5, clock pulse 6, the output of which is connected to the input of the driver 1 and a ring Circulation of the signal samples, consisting of the second delay element 7, the imager of 8 informational pulses, the discrete control of the height and duration of the circulating samples and blocks of 2-3-4-5-5, common with the cycle of the clock pulse.

The device also contains a generator 9 impediments; Synchronization for synchronization, control pulse driver 1O, write pulse selector 11 and key 12. Selector output 11 is connected to one of the inputs of key 12, the output of which is connected to the input of modulator 2. Generator input 9 is connected to one of the outputs of driver 1. One from the outputs of the imaging unit 10 is connected to one of the inputs of the imaging unit 8.

The device has inputs 13 and 14 and output 15.

The device works as follows.

The shaper 1 operating in the standby mode is supplied with an external single trigger pulse through the input 14. The shaper 1 generates a right angle pulse with the calling parameters -. tact pulse (see FIG. 2a). This pulse is converted into a radio pulse by means of a modulator 2, is delayed in a delay element 3, made on an ultrasonic delay line, and is attenuated in this way. The attenuation is compensated by the amplifier 4. The radio pulse is detected by the detector 5. The pulse of the clock from the VIEZ detector 5 through the selector 6 is fed to the input of the generator 1, which b will set the pulse parameters. A steady cycle of pulse is formed with a period equal to the delay time of the ultrasonic delay line T. (see Fig. 2a). The clock pulses are sent from the output of the former 1 to the input of the generator 9, which generates electrical oscillations With a period N, where N is the compression ratio of signals in the device (usually N 1OOO). With the arrival of the clock pulse, oscillations (generator 9 is broken and set

again only after the termination of the impulse. As a consequence, the oscillation phase of the generator 9 is strictly constant with respect to the tact pulse (see Fig. 26). The oscillations of the generator 9 are converted by the shaper 1O into a sequence of rectangular pulses with a period of following Tu Tk and a duration of 0.5 Tu (see Fig. 2c). The first control impulse, which follows the pulse of the clock, is allocated by the selector 11 and enters the master key 12, while unlocking it. At the output of the key 12, a sample of the signal is formed (see Fig. 2i), which through the modulator 2, the delay element 3, the amplifier 4 and the detector 5 enters the delay element 7, which has a delay time Tc Tu. Next, the sample is fed to the input of the imaging unit 8, in which its parameters are restored, and then again to the input of the modulator 2. Due to the fact that the circuits of the pulse pulse and signal sampling are different by the time d Tz, the sample goes to the input of the modulator 2 with a delay of dTz, and in its original place (relative to the pulse of the clock) a new sample will be recorded, and a tick further until the device is filled (see Fig. 2e). To prevent overheating. In order to get new samples to the old ones after filling the device, a pause is provided in the sequence of control pulses for the duration of the action of the clock pulse due to the breakdown of oscillations of the generator 9. To this end, the pulse duration of the clock pulse is equal to 2 ... 3. Tu. At the moment of pause, the shaper g is locked, the circulation ring is broken, and the very oldest sample, which falls due to a delay of L T3 at this interval of time for the shaper 8 to enter, stops the circulation. If necessary, the preservation of recorded signal samples delay element 7 is excluded from. signal circulation rings.

Due to the constant phase relations between the pulses of the cycle, the control pulses and the recorded signal samples, the change in the temperature of the ultrasonic delay line and the corresponding change in the delay time does not lead to out-of-sync recording and restoration of the signal samples. Changing the delay time only causes the amount of Sti6opoK recorded in the device to change. However, for real lines, this change does not exceed the units in 1 assemblies out of a thousand of recorded ones, which is negligible.

Claims (2)

1. USSR author's certificate N9 175740, cl. q 06 F 13/00, 1965. 2.Avtorskoy certificate of the USSR; № 204376, cl. G 11 C 21/00, 1967 (prototype). u n Yo  u. B n P Figg