Analogue to digital signal conversion and storage system
AssigneeMorgan-Smith Electronics Ltd.
InventorPeter J. Morgan-Smith
Life of this patent
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Abstract
In an analogue to digital converter, the analogue signal applied thereto is sampled at successive time intervals and at each sample a digital signal is produced and the time interval between successive samples is not necessarily constant but is dependent upon the rate of change of amplitude of the analogue signal during said time interval. The digital signals may be applied to a counter to produce data representative of the time interval between successive samples and also to indicate whether the analogue signal has increased or decreased between successive samples. This data may then be recorded in a manner to provide substantially constant recording density.
Claims11
An analogue-to-digital signal conversion and storage system including means for sampling the analogue signal at successive time intervals and producing at each sample a digital signal, the interval between successive samples being dependent upon the rate of change of amplitude of the analogue signal during said time interval, timing means for determining the time interval between successive samples, storage means including a data buffer to which data from the system is supplied and from which data is applied to a recording means, the speed at which data is stored in the recording means being variable, and means for producing a control signal for adjusting said speed in response to the amount of data stored in the buffer, said signal being arranged to prevent overload of the buffer.
Dependencies are inferred from the claim text.