SU488204A1 - Device for monitoring switch information storage on magnetic media - Google Patents

Description

The device works as follows.

The address of the magnetic head 8, which needs to record or reproduce information, is entered into a multi-bit register 1. The resolution signal from one of the outputs of the decoder 3 is fed to the input of one of the elements of the switch 7, the output of which allows the recording current from the outputs of the recording amplifiers 9, 10 through an appropriate magnetic head 8. The input signal of this element of the switch allows the signals reproduced by the corresponding magnetic head to enter the reproduction amplifier 11.

When the service information recording permission signal is sent to the interconnected inputs of the elements And 6, the state of the register 1 is overwritten into 1POL: the real register 12. This rewriting takes place in the recording mode, the service information on the 5th information track performed on. a small part of the naked. Then, the mode of reproduction is carried out with the sequential selection of all magnetic heads. At the same time, only one head, the address of which is contained in register 12, must reproduce the service information that serves for users of the switchboard. If, in this mode, the head, which is contained in register 12, “has not reproduced the service information, this indicates a failure | equal to the corresponding output of the decoder 3, the switch element. A 7 or. of the magnetic head 8, Pr1ep1 tstvuyuschaya for recording or vosproizvedenii this goshov.kOi. If service and information; qi is also reproduced by a magnetic head, the address of which does not correspond to the state of register 12, this corresponds to another type of malfunction by permanent resolution of the record-1V.proiz.ed. "; And this head or the closure of the head selection circuits, the address of which is contained in register 12, and the head that reproduces the service information.

The track with the service information is determined by block 5, the inputs of which are connected to the outputs of registers 1 and 12. Block 5 outputs a signal if the state of registers 1 and 12 is the same, i.e. the track on which the service information is to be recorded The output of block 5 is connected to the input of block 13 of the indication of no recording on the track on which the recording should be, and to the input of block 14 indicating the presence of recording on the track on which there should be no recording.

Block 13 gives an impulse in case if this information was not reproduced on the track on which the service information is to be recorded. This pulse arrives at the input of the error code generation unit 15 and at the input of the element OR 16. For example, the arrival of this pulse at the input of the unit 15 will cause the first of two lights to go on or an error code will appear in block 4 chained data at the appropriate time. The recording presence indication unit 14 gives an impulse if the service of information, which serves to control the switch, is reproduced by a head that should not have recorded this information. Im.pulse from the output of block 14 is fed to the input element "OR 16 and

the input unit 17 generating the error code. When a pulse arrives at the input of block 17, it lights up (for example, the second of two error signs in display unit 2, or data transfer unit 4, code 10 is transmitted at the appropriate time. Pulse from the output of the element "OR 16 is fed to the input of the trigger 18, transfer by the data transfer unit 4 to the memory or to the digital print of the number of the head that recorded the service information, the number of the head that mistakenly reproduced the service information, and the number of the head that did not reproduce and reproduce

service information and error sign. After the end of the search in the playback mode of addresses of all magnetic heads, the service information is erased and recorded on the (and + 1) -th information track. After that, the magnetic heads are searched in the playback mode, then the process is repeated.

Claims (1)

Invention Formula A device for monitoring an information storage switch on a magnetic carrier containing the first and second blocks for generating an error code, a bus for interrogating signals, reproducing and enabling recording of service information and a register with a decoder, a display unit and the first inputs of a data transmission unit connected to the output, a control input which is connected to the start-up unit, characterized in that, in order to expand the scope of application and simplify the device, it contains an additional register connected To its inputs are elements "AND, the first inputs of which are connected to the outputs of the register, and the second ones are connected with a bus signal for recording service information, a display unit corresponding to the state of registers, display units for the presence and absence of recording and the element OR connected to their outputs connected to the inputs of the first and second blocks of generation of the error code, and the output to the start-up unit, with the first inputs of the display unit corresponding to the state of the registers connected to the register, the second inputs connected to the second inputs of the transmission unit data and outputs the additional register, the first inputs of blocks indicating the presence and absence of the recording connected to the output of the indication unit correspondence state register, the second input - to a tire reproducing service data, and a third input of the block indicating absence zanisi coupled to bus interrogation signal. Sssi.