Scan deflection circuit device

Claim 2

In a multi-line image reproducing assembly having a horizontal deflection coil, a circuit device for changing the line rate of the assembly without changing the horizontal dimensions of the reproduced image, said circuit device comprising: junction means connectable with a D.C. source of voltage; adjustment means for varying the voltage level from said source of D.C. voltage supplied to said junction means, and circuit means connected to the horizontal deflection coil of said image reproducing assembly and to said junction means, said circuit means being responsive to a selected voltage level supplied from said source through said junction means for causing scan deflection signals to be produced across said coil, said circuit means including means for maintaining the peak magnitude of said signals substantially constant regardless of changes in the selected voltage level and for changing the frequency of occurrence of said signals in response to changes in the selected voltage level whereby changes in the selected voltage level changes the horizontal line rate of said assembly without changing the horizontal dimension of said reproduced image.

Claim 3

A circuit device according to claim 1 wherein said means for maintaining the peak magnitude includes first means connected with said voltage source through said junction means and responsive to a selected voltage level for controlling the shape of said deflection signals and second means connected with said voltage source through said junction means and responsive to said selected voltage level for controlling the frequency of occurrence of said signals and for also affecting the shape of said signals whereby both said first and second means are substantially simultaneously responsive to a change in the selected voltage level for maintaining the peak magnitude of said signals constant while changing the frequency of occurrence thereof.

Claim 4

A circuit device according to claim 2 wherein said second means includes a linear voltage controlled oscillator connected with said voltage souce through said junction means and with said first means.

Claim 5

A circuit device according to claim 3 wherein said first means includes voltage establishing means connected with said voltage source through said junction means for establishing a voltage level substantially equal to the selected voltage level supplied from said source.

Claim 6

A circuit device for controlling at least one dimension of scan in an image reproducing assembly having a scan deflection coil, said circuit device comprising a junction connectable with a voltage source; adjustment means for varying the voltage level supplied through said junction from a connected voltage source and circuit means connected between said scan deflection coil and said junction, said circuit means being responsive to a selected voltage level supplied from said junction for causing scan deflection signals to be produced across said deflection coil, said circuit means including means for maintaining the peak magnitude of said signals substantially constant regardless of changes in the selected voltage level, for increasing the frequency of occurrence of said signals with an increase in the selected voltage level, and for decreasing the frequency of occurrence of said signals with a decrease in the selected voltage level whereby said increases and decreases in the selected voltage level respectively increases and decreases the scan rate in said assembly without changing at least one dimension of the image reproduced by said assembly.

Claim 7

A circuit device for controlling at least one dimension of scan in an image reproducing assembly having a scan deflection coil, said circuit device comprising a junction connectable with a voltage source; adjustment means for varying the voltage level supplied through said junction from a connected voltage source and circuit means connected between said scan deflection coil and said junction, said circuit means being responsive to a selected voltage level supplied from said junction for causing scan deflection signals to be produced across said deflection coil, said circuit means including means for maintaining the peak magnitude of said signals substantially constant regardless of changes in the selected voltage level, for increasing the frequency of occurrence of said signals with an increase in the selected voltage level, and for decreasing the frequency of occurrence of said signals with a decrease in the selected voltage level whereby said increases and decreases in the selected voltage level respectively increases and decreases the scan rate in said assembly without changing at least one dimension of the image reproduced by said assembly.

Claim 8

In a multi-line rate image producing assembly having a horizontal deflection coil, a circuit device for changing the line rate of the assembly without changing the horizontal dimensions of the reproduced image, said circuit device comprising: a junction connectable with a voltage source; adjustment means for varying the voltage level supplied to said junction from a connected voltage source; and circuit means connected with the horizontal deflection coil of said image reProducing assembly and said junction, said circuit means being responsive to a selected voltage level supplied thereto for causing scan deflection signals to be produced across said deflection coil, the frequency of occurrence and magnitude of said signals being dependent upon said selected voltage level whereby changes in the selected voltage level changes the line rate of the assembly without changing the horizontal dimensions of the reproduced image.

Claim 9

In a multi-line rate image producing assembly having a horizontal deflection coil, a circuit device for changing the line rate of the assembly without changing the horizontal dimensions of the reproduced image, said circuit device comprising: a junction connectable with a voltage source; adjustment means for varying the voltage level supplied to said junction from a connected voltage source; and circuit means connected with the horizontal deflection coil of said image reProducing assembly and said junction, said circuit means being responsive to a selected voltage level supplied thereto for causing scan deflection signals to be produced across said deflection coil, the frequency of occurrence and magnitude of said signals being dependent upon said selected voltage level whereby changes in the selected voltage level changes the line rate of the assembly without changing the horizontal dimensions of the reproduced image.

Claim 10

In a multi-line rate image reproducing assembly, a circuit device for changing the line rate of the assembly without changing the horizontal dimensions of the reproduced image, said circuit device comprising: a junction connectable with a voltage source; adjustment means for varying the voltage level supplied to said junction from a connected voltage source; signal producing means connected with said junction for producing an oscillatory signal having a frequency which is dependent upon and directly proportional to a selected voltage level supplied from said junction; and circuit means connected with said junction and said signal producing means and responsive to the selected voltage level and to said oscillatory signal for producing a horizontal scan deflection signal having a frequency of occurrence substantially equal to the frequency of said oscillatory signal and a peak magnitude which is directly proportional to the selected voltage level and inversely proportional to the frequency of said oscillatory signal whereby changes in the selected voltage level changes the frequency of occurrence of said scan deflection signal and therefore the line rate of said assembly without changing the peak magnitude of said scan deflection signals and therefore without changing the horizontal dimensions of the reproduced image.

Claim 11

In a multi-line rate image reproducing assembly, a circuit device for changing the line rate of the assembly without changing the horizontal dimensions of the reproduced image, said circuit device comprising: a junction connectable with a voltage source; adjustment means for varying the voltage level supplied to said junction from a connected voltage source; signal producing means connected with said junction for producing an oscillatory signal having a frequency which is dependent upon and directly proportional to a selected voltage level supplied from said junction; and circuit means connected with said junction and said signal producing means and responsive to the selected voltage level and to said oscillatory signal for producing a horizontal scan deflection signal having a frequency of occurrence substantially equal to the frequency of said oscillatory signal and a peak magnitude which is directly proportional to the selected voltage level and inversely proportional to the frequency of said oscillatory signal whereby changes in the selected voltage level changes the frequency of occurrence of said scan deflection signal and therefore the line rate of said assembly without changing the peak magnitude of said scan deflection signals and therefore without changing the horizontal dimensions of the reproduced image.

Claim 12

A circuit device according to claim 7 wherein the peak magnitude of said scan deflection signals is a linear function of the selected voltage level and an equal but inverse linear function of frequency of occurrence of said oscillatory signal whereby potential changes in the magnitude of said deflection signals caused by changes in the selected voltage and frequency of occurrence substantially cancel out causing the magnitude to remain substantially constant.

Claim 13

A circuit device according to claim 8 wherein said signal producing means includes a linear voltage controlled oscillator.