Digital measuring system

Claim 2

Digital measuring system for determining the position of the center of two specifically set measuring points in an object to be successively detected during the measuring operation, said system having a digital detecting device which generates pulses during the measuring operation and a counting device which receives said pulses from said digital detecting device so as to count said pulses so that the value to be measured is determined by the number of pulses counted thereby, wherein the improvement comprises a measuring point detecting device which generates a first pulse when the preceding one of said two measuring points is detected thereby while a second pulse is generated by said measuring point detecting device when the succeeding one of said two measuring points is detected thereby, a gate circuit connected to the output of said digital detecting device and the output of said measuring point detecting device and having a first, a second and a third output terminal, and a pulse decreasing device adapted to erase alternating pulses in the series of input pulses received thereby so as to generate output pulses the number of which is reduced to half the number of said input pulses received thereby, said first output terminal of said gate circuit being directly connected to the input of said counting device while said second output terminal is connected to said counting device through said pulse decreasing device with said third output terminal being kept disconnected from either of said counting device and said pulse decreasing device, said gate circuit being so controlled by said measuring point detecting device that the output pulses from said digital detecting device are directly supplied through said first terminal to said counting device so as to be counted thereby when the measuring operation is commenced at a predetermined reference point with said counting device being reset to zero while said output pulses are switched to be supplied to said counting device through said second terminal and said pulse decreasing device when said first pulse from said measuring point detecting device is supplied to said gate circuit so that the output pulses of said pulse decreasing device are counted by said counting device, the supply of said output pulses from said digital detecting device through said second terminal and said pulse decreasing device to said counting device being stopped by said second pulse generated by said measuring point detecting device and supplied to said gate circuit, thereby permitting the position of the center of said two measuring points to be determined by the number of pulses received and counted by said counting device.

Claim 3

System according to claim 1, wherein said gate circuit comprises a first differential circuit connected to said measuring point detecting device, an inverter circuit and a second differential circuit connected in series to said inverter circuit, said inverter circuit being connected to said measuring point detecting device, a first and second flip-flop circuits each having a setting and a resetting input terminals and a first and second output terminals so that an output is generated at said first output terminal when an input is applied to said setting input terminaL with said second output terminal being kept zero while an output is generated at said second output terminal and the output at said first output terminal is made zero when an input is applied to said resetting input terminal, said setting input terminal of said first flip-flop circuit being connected to the output of said first differential circuit while said resetting input terminal thereof is connected to the output of said second differential circuit, said setting input terminal of said second flip-flop circuit being connected to the output of said second differential circuit, resetting means connected to said resetting input terminal of each of said first and second flip-flop circuits, and a first and second AND circuits, said second output terminal of said first flip-flop circuit being connected to said first and second AND circuits while said first output terminal of said second flip-flop circuit is connected to said second AND circuit and said second output terminal thereof is connected to said first AND circuit, the output of said first AND circuit being connected to said first output terminal of said gate circuit and the output of said second AND circuit is connected to said third output terminal thereof while the output of said first output terminal of said first flip-flop circuit being connected to said second output terminal of said gate circuit.

Claim 4

Digital measuring system for setting an origin in the measurement to the center of two specifically set measuring points in an object to be successively detected during the measuring operation, said system having a digital detecting device which generates pulses during the measuring operation and a counting device which receives said pulses from said digital detecting device so as to count said pulses so that the value to be measured is determined by the number of pulses counted thereby, wherein the improvement comprises a measuring point detecting device which generates a first pulse when the preceding one of said two measuring points is detected thereby while a second pulse is generated by said measuring point detecting device when the succeeding one of said two measuring points is detected thereby, a gate circuit connected to the output of said digital detecting device and the output of said measuring point detecting device and having a first, a second and a third output terminal, and a pulse decreasing device adapted to erase alternating pulses in the series of input pulses received thereby so as to generate output pulses the number of which is reduced to half the number of said input pulses received thereby, said first output terminal of said gate circuit being directly connected to the input of said counting device while said second output terminal is connected to said counting device through said pulse decreasing device with said third output terminal being kept disconnected from either of said counting device and said pulse decreasing device, said gate circuit being so controlled by said measuring point detecting device that the output pulses from said digital detecting device is supplied to said third output terminal when the measuring operation is commenced at a reference point with said counting device being reset to zero thereby keeping the same inoperative, while said output pulses are supplied through said second output terminal and said pulse decreasing device to said counting device when said first pulse from said measuring point detecting device is supplied to said gate circuit thereby permitting the output pulses from said pulse decreasing device to be counted by said counting device, the output pulses of said digital detecting device being switched to be supplied directly to said counting device through said first output terminal of said gate circuit when said second pulse from said measuring point detecting device is supplied to said gate circuit thereby permitting the origin in the measurement to be set to the center of said two measuring points by virtue of the fact that the number of pUlses supplied from said pulse decreasing device to said counting device and counted thereby within the range between said two measuring points is reduced to half the number of pulses supplied from said digital detecting device within said range while no pulses are supplied to said counting device until the preceding one of said two measuring points is detected, the output pulses from said digital detecting device being directly supplied to said counting device after the succeeding one of said two measuring points has been detected.

Claim 5

Digital measuring system for setting an origin in the measurement to the center of two specifically set measuring points in an object to be successively detected during the measuring operation, said system having a digital detecting device which generates pulses during the measuring operation and a counting device which receives said pulses from said digital detecting device so as to count said pulses so that the value to be measured is determined by the number of pulses counted thereby, wherein the improvement comprises a measuring point detecting device which generates a first pulse when the preceding one of said two measuring points is detected thereby while a second pulse is generated by said measuring point detecting device when the succeeding one of said two measuring points is detected thereby, a gate circuit connected to the output of said digital detecting device and the output of said measuring point detecting device and having a first, a second and a third output terminal, and a pulse decreasing device adapted to erase alternating pulses in the series of input pulses received thereby so as to generate output pulses the number of which is reduced to half the number of said input pulses received thereby, said first output terminal of said gate circuit being directly connected to the input of said counting device while said second output terminal is connected to said counting device through said pulse decreasing device with said third output terminal being kept disconnected from either of said counting device and said pulse decreasing device, said gate circuit being so controlled by said measuring point detecting device that the output pulses from said digital detecting device is supplied to said third output terminal when the measuring operation is commenced at a reference point with said counting device being reset to zero thereby keeping the same inoperative, while said output pulses are supplied through said second output terminal and said pulse decreasing device to said counting device when said first pulse from said measuring point detecting device is supplied to said gate circuit thereby permitting the output pulses from said pulse decreasing device to be counted by said counting device, the output pulses of said digital detecting device being switched to be supplied directly to said counting device through said first output terminal of said gate circuit when said second pulse from said measuring point detecting device is supplied to said gate circuit thereby permitting the origin in the measurement to be set to the center of said two measuring points by virtue of the fact that the number of pUlses supplied from said pulse decreasing device to said counting device and counted thereby within the range between said two measuring points is reduced to half the number of pulses supplied from said digital detecting device within said range while no pulses are supplied to said counting device until the preceding one of said two measuring points is detected, the output pulses from said digital detecting device being directly supplied to said counting device after the succeeding one of said two measuring points has been detected.

Claim 6

Digital measuring system according to claim 3 for determining the distance between the center of a first set of two measuring points and the center of a second set of two measuring points in which the origin in the measurement is set to the center of said first set of two measuring points wherein the improvement comprising the fact that said gate circuit is controlled by said measuring point detecting device such that the output pulses from said digital detecting device are switched to be supplied to said second output terminal of said gate circuit when the preceding one of the two measuring points in said second set is detected by said measuring point detecting device so as to generate a first pulse therein to be supplied to said gate circuit after the succeeding one of of the two measuring points in said first set has been detected by said measuring point detecting device thereby supplying the output pulses from said pulse decreasing device to said counting device, the output pulses from said digital detecting device being switched to be supplied to said third output terminal of said gate circuit when the succeeding one of the two measuring points in said second set is detected thereby stopping the supply of the output pulses from said digital detecting device to either of said counting device and said pulse decreasing device so that the measurement is terminated when the number of pulses indicative of the center of the two measuring points in said second set has been supplied to said counting device by virtue of the fact that the number of pulses supplied to said counting device through said pulse decreasing device within the range between the two measuring points in said second set is reduced to half the number of pulses from said digital detecting device within said range.

Claim 7

System according to claim 4, wherein said gate circuit comprises a first differential circuit connected to said measuring point detecting device, a converter circuit and a second differential circuit connected in series to said converter circuit, said converter circuit being connected to said measuring point detecting device, a first flip-flop circuit having a setting input terminal, a resetting input terminal and a first and second output terminals, an output being generated at said first output terminal when an input is supplied to said setting input terminal with said second output terminal being kept zero while an output is generated at said second output terminal and the output at said first output terminal is made zero when an input is applied to said resetting input terminal, a second flip-flop circuit having a setting input terminal, an inverting input terminal and a first and second output terminals, an input being generated at said first output terminal of said second flip-flop circuit when an input is applied to said setting input terminal thereof with said second output terminal being kept zero, said second flip-flop circuit being inverted each time an input is applied to said inverting input terminal thereby alternately generating an output at said first and said second output terminal, said setting input terminal of said first flip-flop circuit being connected to said first differential circuit while said resetting input terminal of said first flip-flop circuit and said inverting input terminal of said second flip-flop circuit are connected to said second differential circuit, resetting means being connected to said resetting input terminal of said first flip-flop circuit and said setting input terminal of said second flip-flop circuit, and a first and a second AND circuit, said second output terminal of said first flip-flop circuit being connected to said first and second AND circuits while said first output terminal of said second flip-flop circuit is connected to said second AND circuit and said second output terminal of said second flip-flop circuit is connected to said first AND circuit, the output of said first AND circuit and the output of said second AND circuit being connected to said first and said third output terminal of said gate circuit while said first output terminal of said first flip-flop circuit is connected to said second output terminal of said gate circuit.

Claim 8

Digital measuring system according to claim 2 for determining the position of the center each of a plurality of sets of two measuring points to be successively detected during the measuring operation in which the position of the center of the two measuring points of a first set in said plurality of sets is determined, wherein the improvement comprises a further counting device connected to said digital detecting device adapted to count the output pulses from said digital detecting device at all times during the measuring operation regardless of the operation of said gate circuit, a counting control circuit connected to said further counting device and said counting device controlled by said gate circuit so as to transmit the content of said further counting device to said counting device controlled by said gate circuit at a given time, a register control circuit with the inputs thereof being connected to the output of said counting device controlled by said gate circuit and the output of said second differential circuit while one of the outputs is connected to said counting control circuit, a registering device connected to the other of the outputs of said register control circuit for storing the content of said counting device controlled by said gate circuit, and a recording printer device connected to said registering device for recording the content of said registering device, said gate circuit and said register control circuit being so controlled by said measuring point detecting device that the output pulses from said digital detecting device are supplied through said first output terminal of said gate circuit to said counting device controlled by said gate circuit with said further counting device being supplied with output pulses directly from said digital detecting device when the measuring operation is commenced at a predetermined reference point with said counting device and said further counting device being reset to zero, the output pulses from said digital detecting device being switched to be supplied through said second output terminal of said gate circuit and said pulse decreasing device to said counting device while said further counting device is supplied with the output pulses directly from said digital detecting device when said first pulse is supplied from said measuring point detecting device to said gate circuit upon detecting the preceding one of the two measuring points of the first set in said plurality of sets, the output pulses from said digital detecting device being switched to be supplied directly to said counting device through said first output terminal of said gate circuit while said register control circuit is actuated simultaneously with the switching of the output pulses from said second output terminal to said first output terminal so as to transmit the content of said counting device to said registering device so as to store the same therein and record the same in said recording printer device when said second pulse is applied to said gate circuit from said measuring point detecting device upon detection of the succeeding one of the two measuring points in said first set, said register control circuit further supplying to said counting control circuit a demand upon completion of the storing of the coNtent of said counting device in said registering device so as to transmit the content of said further counting device to said counting device controlled by said gate circuit, the content recorded in said recording printer device being indicative of the position of the center of the two measuring points in said first set of said plurality of sets while the content transmitted from said further counting device to said counting device controlled by said gate circuit is indicative of the position of the succeeding one of the two measuring points of said first set thereby permitting the position of the center of two measuring points in the respective succeeding sets to be successively indicated in said recording printer device by repeating the above procedure.