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Class 369 - Dynamic information storage or retrieval

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613 Subclasses


Subclasses list

Definition

A. This is the generic class for processes of and apparatus for the storage or retrieval of arbitrarily variable information (as defined in the glossary below) which is retained in a storage medium by variation of a physical characteristic thereof. The information is stored or retrieved by causing or sensing a variation of a physical characteristic of the storage medium by a transducer having relative motion along a continuous path.

(1) Note. The record carrier must have continuous physical extent over the path of movement and be able to store a time-varying information signal. Static or discrete systems are classified elsewhere (see References to Other Classes, below). (2) Note. The characteristic variation is one which must be retrievable by a transducer. Such variation producing only a directly perceptible indication (e.g., a graph), is classified elsewhere (see References to Other Classes, below).

B. This class includes processes and apparatus for the copying or editing of a storage medium within the above definition limited to such copying or editing including a step of storage or retrieval by relative motion.

C. This class includes the record carrier, per se, having particular information storage structure.

Lines with other classes and within this class

COMBINATIONS OF OTHER APPARATUS WHICH INCLUDE APPARATUS OF THIS CLASS

Significantly claimed subject matter external to this class, claimed in combination with apparatus under the class definition, is classified in the class appropriate to the external apparatus.

The combination of an audio signal producing device with the subject matter of this class is classified in this class, except the combination with telephone signal devices are classified elsewhere. (See References to Other Classes, below.)

Nominally claimed apparatus external to this class, claimed in combination with apparatus under the class definition, is classified herein. (See Subclass References to the Current Class, below.)

SUBCOMBINATIONS OF DYNAMIC INFORMATION STORAGE AND RETRIEVAL

This class includes elements and subcombinations peculiar to the subject matter of this class (e.g., a phonographic stylus and cartridge).

(1) Note. Subcombination devices of general utility such as piezoelectric transducers are classified elsewhere.

Electrical circuitry which may be used in dynamic storage or retrieval, but which is not unique thereto is found in the appropriate class for such circuitry.

Mechanisms forming subcombinations of storage or retrieval devices, are classified in the appropriate mechanical class.

DYNAMIC MAGNETIC INFORMATION STORAGE AND RETRIEVAL

Class 360 provides for information storage and retrieval by causing or sensing modification of a magnetic condition on a record. Class 360 is to be considered an integral part of Class 369 and follows the schedule hierarchy, retaining all pertinent definitions and class lines, thereof. Classification in Class 360 is evidenced by either explicit recitation or sole disclosure of magnetic structure.

ORGANIZATION OF THIS CLASS

For the organization of this class, see Subclass References to the Current Class, below.

 
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