Method and means for recording of information
AssigneeSimrad A.S.
InventorKjell Oystein Ramberg
Life of this patent
Estimating the term…
Abstract
A method and means for recording auxiliary information, e.g. temperature readings, on echo sounder recorders or similar display devices, in addition to the normal recording, said information being presented as the distance of a recorded mark from a point of reference. In order to always secure a clear representation of such information, according to the invention the normal record on the display is blanked out or reduced in intensity adjacent said mark.
Claims14
A method for controlling the recording of auxiliary information on a recording medium along with echo sounding signals, comprising the steps of:
- storing data representative of said auxiliary information;
- changing the value of the stored data;
- detecting a first predetermined value of the stored data and generating a first signal indicative thereof;
- detecting a second predetermined value of the stored data and generating a second signal indicative thereof;
- generating a marking signal representative of said auxiliary information in response to said second signal;
- amplifying said marking signal and the echo sounding signals for recording;
- reducing the amplitude of the echo sounding signals in response to said first signal;
- and
- restoring the amplitude of said echo sounding signals after a period determined by the interval between said first and second signals, whereby said marking signal is recorded on said recording medium and the normal record adjacent said marking signal provides a contrasting background thereto.
Apparatus for controlling the recording of auxiliary information on a recording medium along with echo sounding signals, comprising:
- means for storing data representative of said auxiliary information, the value of said stored data being changed in response to control signals;
- first means for detecting a first predetermined value of the changed data in said means for storing and for generating a first signal indicative thereof;
- second means for detecting a second predetermined value of the changed data and for generating a second signal indicative thereof;
- means for generating a marking signal representative of said auxiliary information in response to said second signal;
- means for amplifying said marking signal and the echo sounding signals for recording;
- means for reducing the amplitude of the amplified echo sounding signals in response to said first signal;
- and
- means for restoring the amplitude of said echo sounding signals after a period determined by the interval between said first and second signals, whereby said marking signal is recorded on said recording medium and the normal record adjacent said marking signal provides a contrasting background thereto.
Dependencies are inferred from the claim text.