SU1223301A1 - Device for detecting medium skewness - Google Patents

Abstract

The invention relates to a technique for storing information, to devices for measuring tape movement in magnetic recording apparatus using information recorded on a carrier. The purpose of the invention is to provide the possibility of not entering Tconal Input 2xgnol. mediating the number of carrier skews exceeding the allowable values. The playback signals of the magnetic recording apparatus are fed to the inputs of the playback amplifiers 1 and 2, then to shapers 3 and 4 pulses, at the output of which a sequence of square pulses is formed. The signal from the imaging unit 4 pulses goes through the delay line 7 and the imaging unit 8 of the pulse duration, which sets the permissible values of carrier skews, to the input of a 6 E membrane. If there is a skewing but-. The system exceeds the permissible value at the output of element 6 And a pulse signal appears, which is counted by a counter of 9 pulses and recorded by the block 10. 1 Cp f-ly, 1 ill. 9 to S 00 O9

Description

one

The invention relates to a technique for accumulating information, namely, devices for measuring the movement of a tape in magnetic recording apparatus using information recorded on a carrier.

The purpose of the invention is the provision of the possibility of directly counting the number of carrier skews, exceeding the limit values

The drawing shows strukt.5F-on the scheme of the device.

The device contains reproduction amplifiers 1 and 2, connected respectively to a shaper of 3 and 4 pulses. The output of the first driver 3 pulses is connected through the first driver 5 of pulse duration, to one of the inputs of element 6 I. The output of the second driver 4 of pulses is connected via delay line 7 and the second driver 8 of pulse duration to another input of element 6 A pulse counter 9 is connected to the registration unit 10.

In addition, the delay line 7 can be made adjustable to account for differences in the values of the phase shift angle between the channels of the test apparatus, varying from sample to sample.

The device works as follows.

The playback signals of the magnetic recording apparatus under test are fed to the corresponding inputs of the playback amplifiers 1 and 2, then to the shapers of 3 and 4 pulses. At the output of each of them, a sequence of rectangular pulses is formed. The signal from the second imager 4 pulses comes through the delay line 7 and the second imager 8 is long. Compiled by Yu.Kuzovlev Editor S. Patrusheva Tehred i.Popovsh

Order 1720/55 Circulation 543Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5

Branch PPP. Patent, Uzhgorod, st. Project, 4

22330Г2

of these pulses, which sets the allowable values of carrier skews to the input of element 6 I. If there is a media skew of the test apparatus exceeding the allowable value, the output of element 6 appears and a pulse signal appears, count the pulse counter 9 pulses and recorded in block 10. 10

Claims (2)

1. Device for detecting carrier skew, containing two 15, a playback amplifier, two pulse drivers, a delay line, and a recording unit, the output of the second pulse driver being connected to the delay line input, characterized in that, in order to enable the number of carrier skews exceeding the allowable values, to 25, the first and second pulse width formers are entered, and the permissible imbalance values are carried by E, Element I and Pulse Counter, and the output of the first reproduction amplifier is connected. 35 which through a pulse counter connected to the registration unit, the output of the second reproduction amplifier is connected to the input of the second pulse driver, the output of the delay line 40 and connected through the second driver of the pulse duration to another input of the element I. 2. The device according to claim 1, that is, that the delay line is filled with an adjustable one. Proofreader E.Roshko