SU949682A1 - Device for digital magnetic recording and reproducing of multichannel asynchronous data - Google Patents

Description

(54) DEVICE FOR DIGITAL MAGNETIC RECORDING

AND MULTICHANNEL REPRODUCTION

ASYNCHRONOUS INFORMATION

one

The invention relates to magnetic recording, in particular, to devices for digital magnetic recording and reproduction of multi-channel asynchronous information.

A device is known for registering multi-channel asynchronous information 5 onto magnetic media containing analog and digital signal switches, analog-digital converter, parallel code-to-serial converter, recording channel switch, recording unit and synchronization unit 1.

The disadvantage of this device is the need to use a multi-channel magnetic recorder.

A device for digital magnetic recording and reproducing multi-channel asynchronous information is also known, which contains a pulse sequence combining unit associated with an analog-to-digital converter, a parallel-to-serial converter, a clock generator, and a marker pulse generator, and connected to a write signal conditioner, driver playback signal.

associated with a pulse sequence splitter and a shift register 2.

A disadvantage of the known device is the insufficient recording density and the lack of control of fidelity playback.

The purpose of the invention is to increase the recording density and control the fidelity of reproducing multi-channel asynchronous information.

Claims (1)

This goal is achieved by introducing a serially connected priority determination unit, an address generator and an information sequence combining unit, a serially connected channel selection unit, a buffer register and a playback accuracy control unit, the input of which is connected to the device for digital magnetic recording and playback of multichannel asynchronous information. output bus information, and the information inputs of the unit combining information sequences connect enes with input buses, and its output is connected to the data input of the converter parallel to serial, the priority determination unit inputs are connected to the busbars synchronization timing marker and inputs channel selection unit are respectively connected to the synchronizing outputs of the marker and the block separation marker sequences. The drawing shows a block diagram of a device for magnetic recording and reproduction of multi-channel asynchronous information. The device contains input and output information 1 and 2 and synchronization buses 3 connected in series 4 clock pulse generator, pulse sequence combining unit 5, recording signal generator 6, serially connected playback signal generator 7 pulse sequence separator block 8 and shift register 9, converter 10 parallel code in serial, and driver 11 marker pulses, the inputs of which are connected to the generator output 4 clock pulses, and the output You are connected to the inputs of the pulse sequence combining unit 5, bus 12 and 13, the synchronization output and the marker pulse output, connected respectively to the synchronization and marker outputs of the pulse sequence separation unit 8 and to the synchronizing and marker inputs of the shift register 9, in addition, are connected in series the priority determining unit 14, the address generator 15 and the information sequence combining unit 16, connected in series to the channel selection unit 17, bu The black register 18 and the playback accuracy control unit 19, the input of which is connected to the output information bus 2, the information inputs of the combining unit 16 of information sequences are connected to the input buses 1, and its output is connected to the information input of the parallel code converter 10 to the serial inputs of block 14 determining the priority is connected to the synchronization buses 3, the synchronization and marker inputs of the channel selection block 17 are connected to the synchronization and marker outputs, respectively 8 eye separation pulse sequences. The device works as follows. Multichannel asynchronous information in a parallel code is fed to the information inputs of the unit 16 combining information sequences from the input information sections 1. The priority determining unit 14 based on signals from the synchronization sections 3 generates control signals of the address generator 15, which controls the operation 16 of combining information sequences. The multichannel asynchronous information from the output of the information sequence combining unit 16 is converted into a serial code by a parallel code converter 10 into a serial one, from the output of which the signal arrives at the input of the pulse sequence combining unit 5, to the other inputs of which the signals from the 4 clock pulse generator and marker AND pulses. From the output of the pulsed sequence combining unit 5, the signal is fed to the writing signal shaper 6. The output signal from the imaging unit 7 of the reproduction signal is supplied to the pulse sequence separation unit 8, at the outputs of which asynchronous information, synchronization and marker pulses are generated. The multichannel asynchronous information is converted into a parallel code by the shift register 9, from the output of which goes to the channel selection unit 17, from the output of which, via the buffer register 18, information signals are sent to the output information bus 2 and to the input of the playback accuracy control unit 19. The use of the invention makes it possible to increase the magnetic recording density of multi-channel asynchronous information with a significant difference in the information arrival speeds from various information sources, as well as to control the accuracy of reproduction of each information channel. An apparatus for digital magnetic recording and reproduction of multichannel asynchronous information, comprising input and output information buses and synchronization buses, serially connected clock pulses, pulse sequence combining unit, recording signal generator, serially connected reproduction signal generator, pulse sequence separator, and register shift, parallel code to serial converter and form or marker pulses, the inputs of which are connected to the output of the clock pulse generator, and the outputs are connected to the inputs of the pulse sequence combining unit, the sync output and marker pulse buses connected respectively to the clock and marker outputs of the pulse sequence separator and to the clock and marker inputs of the register shift, characterized in that, in order to increase the recording density and control the fidelity of reproduction, Prioritization unit, address shaper and information sequence combining unit, serially connected channel selection block, buffer register and playback fidelity block whose input is connected to the output information bus, the information inputs of the combining information sequence block connected to the input buses and its output connected to the information input of the parallel code to serial converter, the inputs of the priority determination unit are connected to the synchronization buses, the synchronization and marker inputs of the channel selection unit are connected respectively to the synchronization and marker outputs of the pulse sequence separation unit. Sources of information taken into account in the examination 1 USSR author's certificate number 657456, cl. G 11 B 5/04, 13.10.77. 2 USSR author's certificate No. 487411, cl. G 11 B 5/00, 04/16/73.