Data recording system of magneto-optic type
First Claim
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1. A data recording apparatus of a magneto-optic type, comprising:
- control means for performing control of operation of each section for recording, reproducing and searching for data;
a program memory for storing a program for operating the control means;
an operating panel connected to the control means and provided with keys and buttons for entering data, designation and instructions;
a display unit connected to the control means and arranged to display an operation instruction, an operation status of the apparatus, an input monitor, a reproduction monitor and a search information monitor;
input terminals for entering analog signals of multiple channels;
A/D conversion means for converting the analog signals of multiple channels entered from the input terminal into digital signals in time series;
storage means playing a role as a first temporary storage buffer of analog-to-digital data during recording, as a second temporary storage buffer of digital-to-analog data during reproduction, and as an operation buffer for processing search conditions during a search;
a magneto-optic disk having a recording data section for storing analog signals digitized by the A/D conversion means and a condition data section as an index for the search in a particular sector;
a magneto-optic disk driver for writing and reading signals in and from the magneto-optic disk; and
D/A conversion means for converting signals read from the magneto-optic disk into analog signals.
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Abstract
Analog signals of multiple channels received by a terminal are passed through a filter, converted into digital signals by an A/D converter, and are stored temporarily on a RAM. The digital signals are then stored in a recording data section at a particular sector of a magneto-optic disk, while recording an ID number, real-time information on time to start and end recording, event information, trigger information, and so on in a condition data section at the identical particular sector as an index of a search. Upon the search for data, only the condition data section is searched for, thereby permitting a random access and search at a high speed.
18 Citations
6 Claims
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1. A data recording apparatus of a magneto-optic type, comprising:
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control means for performing control of operation of each section for recording, reproducing and searching for data; a program memory for storing a program for operating the control means; an operating panel connected to the control means and provided with keys and buttons for entering data, designation and instructions; a display unit connected to the control means and arranged to display an operation instruction, an operation status of the apparatus, an input monitor, a reproduction monitor and a search information monitor; input terminals for entering analog signals of multiple channels; A/D conversion means for converting the analog signals of multiple channels entered from the input terminal into digital signals in time series; storage means playing a role as a first temporary storage buffer of analog-to-digital data during recording, as a second temporary storage buffer of digital-to-analog data during reproduction, and as an operation buffer for processing search conditions during a search; a magneto-optic disk having a recording data section for storing analog signals digitized by the A/D conversion means and a condition data section as an index for the search in a particular sector; a magneto-optic disk driver for writing and reading signals in and from the magneto-optic disk; and D/A conversion means for converting signals read from the magneto-optic disk into analog signals. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification