Horizontal synchronizing device for television receivers

Claim 2

In a television horizontal sync system comprising an input terminal for receiving a horizontal synchronizing signal, and an oscillator circuit coupled to said input terminal, said oscillator circuit having a mechanical resonator for determining the frequency of oscillation of said oscillator circuit, wherein the improvement comprises a mechanical resonator formed of a piezoelectric ceramic material polarized in the direction of thickness thereof and having top and bottom electrodes attached to top and bottom surfaces perpendicular to the direction of said polarization respectively, said top electrode being longitudinally divided into a first top electrode and a second top electrode and said bottom electrode being longitudinally divided into a first bottom electrode and a second bottom electrode, said first bottom electrode facing said first top electrode and said second bottom electrode facing said second top electrode, said first top electrode being connected to said second bottom electrode so as to constitute a first terminal while said second top electrode is connected to said first bottom electrode so as to constitute a second terminal so that said resonator is made to effect bending vibration in the direction of the surfaces thereof, the oscillation frequency and phase of said oscillator circuit being brought into synchronism with the frequency and phase of said horizontal synchronizing signal, and a filter circuit coupled between said input terminal and said oscillator circuit, said piezoelectric ceramic resonator comprising an element of said filter circuit in addition to determining the frequency of oscillation of said oscillator circuit.

Claim 3

In a television horizontal sync system comprising an input terminal for receiving a horizontal synchronizing signal and an oscillator circuit coupled to said input terminal, said oscillator circuit having a mechanical resonator for determining the frequency of oscillation of said oscillator circuit, wherein the improvement comprises a mechanical resonator comprising a pair of laminated resonator elements formed of a piezoelectric ceramic material, each resonator element being oppositely polarized in the direction of thickness thereof, and having top and bottom electrodes attached to the surfaces perpendicular to the direction of said polarization so that said pair of resonator elements effects a flexing motion, the oscillation frequency and phase of said oscillator circuit being brought into synchronism with the frequency and phase of said horizontal synchronizing signal, and a filter circuit coupled between said input terminal and said oscillator circuit, said piezoelectric ceramic resonator comprising an element of said filter circuit in addition to deteRmining the frequency of oscillation of said oscillator circuit.

Claim 4

In a television horizontal sync system comprising an input terminal for receiving a horizontal synchronizing signal and an oscillator circuit coupled to said input terminal, said oscillator circuit having a mechanical resonator for determining the frequency of oscillation of said oscillator circuit, wherein the improvement comprises a mechanical resonator comprising a pair of laminated resonator elements formed of a piezoelectric ceramic material, each resonator element being oppositely polarized in the direction of thickness thereof, and having top and bottom electrodes attached to the surfaces perpendicular to the direction of said polarization so that said pair of resonator elements effects a flexing motion, the oscillation frequency and phase of said oscillator circuit being brought into synchronism with the frequency and phase of said horizontal synchronizing signal, and a filter circuit coupled between said input terminal and said oscillator circuit, said piezoelectric ceramic resonator comprising an element of said filter circuit in addition to deteRmining the frequency of oscillation of said oscillator circuit.

Claim 5

A television horizontal sync system for providing an output voltage in synchronism with the frequency and phase of a horizontal synchronizing signal comprising; a. an input terminal for receiving said horizontal synchronizing signal; b. an oscillating transistor coupled to said input terminal, said transistor having emitter, base and collector electrodes; c. a tank circuit coupled between the emitter and collector electrodes of said transistor; d. a feed back capacitor and a mechanical resonator connected in series between the emitter and collector electrodes of said transistor, the junction of said feed back capacitor and mechanical resonator being coupled to the base of said transistor, said mechanical resonator comprising a piezoelectric ceramic material polarized in the direction of thickness thereof and having top and bottom electrodes attached to top and bottom surfaces perpendicular to the direction of said polarization respectively, said top electrode being longitudinally divided into a first top electrode and a second top electrode and said bottom electrode being longitudinally divided into a first bottom electrode and a second bottom electrode, said first bottom electrode facing said first top electrode and said second bottom electrode facing said second top electrode, said first top electrode being connected to said second bottom electrode so as to constitute a first terminal and said second top electrode being connected to said first bottom electrode so as to constitute a second terminal, said resonator effecting bending vibration in the direction of the surfaces thereof; and e. output means coupled to said tank circuit for producing said output voltage in synchronism with the horizontal synchronizing signal applied to said input terminal.

Claim 6

A television horizontal sync system for providing an output voltage in synchronism with the frequency and phase of a horizontal synchronizing signal comprising; a. an input terminal for receiving said horizontal synchronizing signal; b. an oscillating transistor coupled to said input terminal, said transistor having emitter, base and collector electrodes; c. a tank circuit coupled between the emitter and collector electrodes of said transistor; d. a feed back capacitor and a mechanical resonator connected in series between the emitter and collector electrodes of said transistor, the junction of said feed back capacitor and mechanical resonator being coupled to the base of said transistor, said mechanical resonator comprising a piezoelectric ceramic material polarized in the direction of thickness thereof and having top and bottom electrodes attached to top and bottom surfaces perpendicular to the direction of said polarization respectively, said top electrode being longitudinally divided into a first top electrode and a second top electrode and said bottom electrode being longitudinally divided into a first bottom electrode and a second bottom electrode, said first bottom electrode facing said first top electrode and said second bottom electrode facing said second top electrode, said first top electrode being connected to said second bottom electrode so as to constitute a first terminal and said second top electrode being connected to said first bottom electrode so as to constitute a second terminal, said resonator effecting bending vibration in the direction of the surfaces thereof; and e. output means coupled to said tank circuit for producing said output voltage in synchronism with the horizontal synchronizing signal applied to said input terminal.

Claim 7

A television horizontal sync system as defined by claim 3 wherein said feed back capacitor is coupled between the base and collector electrodes of said transistor and the first and second terminals of said mechanical resonator are coupled to the base and emitter electrode of said transistor respectively.

Claim 8

A television horizontal sync system as defined by claim 4 which further comprises a transformer having a primary winding coupled between said input terminal and the emitter of said transistor and a secondary winding coupled between the second terminal of said mechanical resonator and the emitter of said transistor, and a filter capacitor coupled between said input terminal and the base of said transistor, said mechanical resonator determining the frequency of oscillation of said sync system and comprising an element of a filter circuit including said transformer and said filter capacitor.

Claim 9

A television horizontal sync system as defined by claim 3 wherein said feedback capacitor is coupled between the base and emitter electrodes of said transistor and the first and second terminals of said mechanical resonator are coupled to the base and collector electrodes of said transistor respectively.

Claim 10

A television horizontal sync system as defined by claim 6 which further comprises a transformer having a primary winding coupled between said input terminal and the emitter of said transistor and a secondary winding coupled between the second terminal of said mechanical resonator and the collector of said transistor, and a filter capacitor coupled between said input terminal and the base of said transistor, said mechanical resonator determining the frequency of oscillation of said sync system and comprising an element of a filter circuit including said transformer and said filter capacitor.

Claim 11

A television horizontal sync system for providing an output voltage in synchronism with the frequency and phase of a horizontal synchronizing signal comprising; a. an input terminal for receiving said horizontal synchronizing signal; b. an oscillating transistor coupled to said input terminal, said transistor having Emitter, base and collector electrodes; c. a tank circuit coupled between the emitter and collector electrodes of said transistor; d. a feed back capacitor and a mechanical resonator connected in series between the emitter and collector electrodes of said transistor, the junction of said feed back capacitor and mechanical resonator being coupled to the base of said transistor, said mechanical resonator comprising a pair of laminated resonator elements formed of a piezoelectric ceramic material, each resonator element being oppositely polarized in the direction of thickness thereof, and having top and bottom electrodes attached to the surfaces perpendicular to the direction of said polarization so that said pair of resonator elements effects a flexing motion; and e. output means coupled to said tank circuit for producing said output voltage in synchronism with the horizontal synchronizing signal applied to said input terminal.

Claim 12

A television horizontal sync system for providing an output voltage in synchronism with the frequency and phase of a horizontal synchronizing signal comprising; a. an input terminal for receiving said horizontal synchronizing signal; b. an oscillating transistor coupled to said input terminal, said transistor having Emitter, base and collector electrodes; c. a tank circuit coupled between the emitter and collector electrodes of said transistor; d. a feed back capacitor and a mechanical resonator connected in series between the emitter and collector electrodes of said transistor, the junction of said feed back capacitor and mechanical resonator being coupled to the base of said transistor, said mechanical resonator comprising a pair of laminated resonator elements formed of a piezoelectric ceramic material, each resonator element being oppositely polarized in the direction of thickness thereof, and having top and bottom electrodes attached to the surfaces perpendicular to the direction of said polarization so that said pair of resonator elements effects a flexing motion; and e. output means coupled to said tank circuit for producing said output voltage in synchronism with the horizontal synchronizing signal applied to said input terminal.

Claim 13

A television horizontal sync system as defined by claim 8 wherein said feed back capacitor is coupled between the base and collector electrodes of said transistor and the top and bottom electrodes of said mechanical resonator are coupled to the base and emitter electrode of said transistor respectively.

Claim 14

A television horizontal sync system as defined by claim 9 which further comprises a transformer having a primary winding coupled between said input terminal and the emitter of said transistor and a secondary winding coupled between the bottom electrode of said mechanical resonator and the emitter of said transistor, and a filter capacitor coupled between said input terminal and the base of said transistor, said mechanical resonator determining the frequency of oscillation of said sync system and comprising an element of a filter circuit including said transformer and said filter capacitor.

Claim 15

A television horizontal sync system as defined by claim 8 wherein said feedback capacitor is coupled between the base and emitter electrodes of said transistor and the top and bottom electrodes of said mechanical resonator are coupled to the base and collector electrodes of said transistor respectively.

Claim 16

A television horizontal sync system as defined by claim 11 which further comprises a transformer having a primary winding coupled between said input terminal and the emitter of said transistor and a secondary winding coupled between the bottom electrode of said mechanical resonator and the collector of said transistor, and a filter capacitor coupled between said input terminal and the base of said transistor, said mechanical resonator determining the frequency of oscillation of said sync system and comprising an element of a filter circuit including said transformer and said filter capacitor.