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1. WO2002019514 - TEMPERATURE COMPENSATION OSCILLATOR

Publication Number WO/2002/019514
Publication Date 07.03.2002
International Application No. PCT/JP2001/007372
International Filing Date 28.08.2001
IPC
H03B 5/04 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
02Details
04Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03B 5/32 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
30with frequency-determining element being electromechanical resonator
32being a piezo-electric resonator
H03B 5/36 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
30with frequency-determining element being electromechanical resonator
32being a piezo-electric resonator
36active element in amplifier being semiconductor device
CPC
H03B 5/04
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
02Details
04Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03B 5/32
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
30with frequency-determining element being electromechanical resonator
32being a piezo-electric resonator
H03B 5/368
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
30with frequency-determining element being electromechanical resonator
32being a piezo-electric resonator
36active element in amplifier being semiconductor device
366and comprising means for varying the frequency by a variable voltage or current
368the means being voltage variable capacitance diodes
H03L 1/026
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
1Stabilisation of generator output against variations of physical values, e.g. power supply
02against variations of temperature only
022by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
026by using a memory for digitally storing correction values
H03L 1/028
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
1Stabilisation of generator output against variations of physical values, e.g. power supply
02against variations of temperature only
028of generators comprising piezo-electric resonators
Applicants
  • CITIZEN WATCH CO., LTD. [JP]/[JP] (AllExceptUS)
  • FUKAYAMA, Hiroyuki [JP]/[JP] (UsOnly)
  • SAKURAI, Yasuhiro [JP]/[JP] (UsOnly)
Inventors
  • FUKAYAMA, Hiroyuki
  • SAKURAI, Yasuhiro
Agents
  • OSAWA, Takashi
Priority Data
2000-26221531.08.2000JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) TEMPERATURE COMPENSATION OSCILLATOR
(FR) OSCILLATEUR A COMPENSATION DE TEMPERATURE
Abstract
(EN)
A temperature sensing circuit (13) measures the temperature of an oscillation circuit (47). A tertiary term voltage generating circuit of a control voltage generating circuit (23) generates a tertiary term voltage used as a control voltage according to the output voltage of the temperature sensing circuit (13). A frequency adjusting circuit (45) varies the oscillation frequency of the oscillation circuit (47) according to the control voltage. The tertiary term voltage generating circuit has a first MOS transistor (37) the source of which is connected to a first power supply line (25), a second MOS transistor (35) the source of which is connected to a second power supply line (26), and digital control voltage dividing circuits (31, 33) for generating first and second gate voltages according to the output voltage of the temperature sensing circuit (13). The first and second gate voltages are applied to the gates of the first and second MOS transistors (37, 35), respectively. The connection node (44) to which the drains are commonly connected are made the output end of the control voltage.
(FR)
La présente invention concerne un circuit de détection de température (13), qui mesure la température d'un circuit d'oscillation (47). Un circuit de production de tension à terme tertiaire faisant partie d'un circuit de production de tension de commande (23) produit une tension à terme tertiaire utilisée en tant que tension de commande, en fonction de la tension de sortie du circuit de détection de température (13). Un circuit de réglage de fréquence (45) fait varier la fréquence d'oscillation du circuit d'oscillation (47) en fonction de la tension de commande. Le circuit de production de tension à terme tertiaire comprend un premier transistor MOS (37), dont la source est connectée à une première conduite d'alimentation (25), un second transistor MOS (35), dont la source est connectée à une seconde conduite d'alimentation (26), ainsi que des circuits diviseurs de tension de commande numériques (31, 33), qui permettent de produire des premières et secondes tensions de grille, en fonction de la tension de sortie du circuit de détection de température (13). Ces premières et secondes tensions de grille sont respectivement appliquées aux grilles du premier et du second transistor MOS (37, 35). Le noeud de connexion (44) auquel les drains sont généralement connectés constitue l'extrémité de sortie de la tension de commande.
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