Method and apparatus for indicating information on a chart recorder
AssigneeKokusai Chart Corporation
InventorsHiroto Hayashi, Shouji Togashi, Keiichi Takano
Life of this patent
Estimating the term…
Abstract
A chart recorder apparatus wherein information is indicated by using light emitting devices which are disposed to access the rear surface of a chart on which measured signals of a chart recorder are recorded on a front surface thereof. Various types of information are projected and indicated without otherwise compromising features of a chart recorder and thereby enhancing functionality of a compact chart recorder having a small display area.
Claims26
A method of indicating information on a chart recorder comprising the steps of:
- recording measured signals on a front surface of a chart;
- projecting information on to a rear surface of said chart using a light beam;
- and
- displaying said information and said measured signals on said front surface of said chart, wherein said information is transmitted from said rear surface through said chart and appears on said front surface.
A method of indicating information on a chart on which measured signals are recorded, said method comprising the steps of:
- projecting information onto a rear surface of said chart using a light emitting device;
- and
- displaying said information on a front surface of said chart,
- wherein said information is transmitted from said rear surface through said chart and appearing on said front surface.
A method of indicating information on a chart recorder comprising the steps of:
- projecting on to a rear surface of a chart of said chart recorder digital information and of a channel for the digital information using a light emitting device;
- and
- displaying the digital information and channel thereof on a front surface of said chart.
An information indicating apparatus comprising:
- indicating means for providing information using at least one light emitting means mounted to access a back surface of a chart on which measured signals are recorded on a front surface;
- means for transmitting beams from said light emitting means through said chart;
- and
- means for displaying said front surface of said chart to obtain said information.
An information indicating apparatus comprising:
- indication means for providing digital information using light emitting means mounted to access a back surface of a chart on which measured signals are recorded;
- means for transmitting beams from said light emitting means through said chart;
- means for displaying said digital information on a front surface of said chart to obtain said digital information;
- and
- means for utilizing said digital information to set and display parameters and measured data.
An information indicating apparatus for use with a chart recorder comprising:
- digital indication means for providing information using light emitting means mounted adjacent a back surface of a chart on which measured signals are recorded on a front surface thereof;
- retention means for retaining signal processing data for signal inputs, said inputs comprising signals from a thermocouple, RTD, and DC voltages;
- signal selection means for selecting a specific signal according to digital information indicated by said digital indication means;
- and
- means for utilizing indications provided by said digital indication means to set and display parameters and measured data.
An information indicating apparatus for use with a chart recorder comprising:
- digital indication means for providing information using light emitting means mounted to access a back surface of a chart on which measured signals are recorded on a front surface thereof;
- retention means for retaining signal processing data for signal inputs, said inputs comprising thermocouple, RTD, and DC voltages;
- signal selection means for selecting a specific signal from signal retained by said retention means according to digital information indicated by said digital indication means;
- selection means for setting maximum and minimum scale values whereby said maximum and minimum scale values for an input signal recorded on said chart are specified according to digital information indicated by said digital indication means;
- and
- means for utilizing indications provided by said digital indication means to set and display parameters and measured data.
An information indicating apparatus for use with a chart recorder, comprising:
- indication means for providing information using light emitting means mounted near a back surface of a chart on which measured signals are recorded on a front surface thereof;
- means for providing said light emitting means with digital information of recorded signals and channel for said digital information;
- means for causing said light emitting means to project said information on said back surface of said chart so that light beams from said light emitting means are transmitted through said chart to thereby appear on said front surface of said chart to show said information and said channel.
Dependencies are inferred from the claim text.