JP2017215229A5

JP2017215229A5 -

Info

Publication number: JP2017215229A5
Application number: JP2016109833A
Authority: JP
Filing date: 2016-06-01
Publication date: 2019-05-30
Anticipated expiration: 2036-06-01

Description

本発明の電子時計の一態様は、モーター駆動回路を含むことを特徴とする。
この態様によれば、少なくとも１つの第１出力端子を、第１駆動信号用と第２駆動信号用とに兼用できるため、いずれの第１出力端子も兼用されない場合に比べて、第１出力端子数を減らすことが可能になる。このため、構成（電子時計）の小型化が可能になる。
また、本発明のモーター駆動回路の一態様は、１つのコイルと２つの入力端子を有する２極ステップモーターを駆動するための第１駆動信号を出力する第１制御回路と、２つのコイルと４つの入力端子を有する４極ステップモーターを駆動するための第２駆動信号を出力する第２制御回路と、前記２極ステップモーターの前記２つの入力端子、または、前記４極ステップモーターの前記４つの入力端子のうちの２つの入力端子、のいずれか一方に接続される２つの第１出力端子と、前記第１制御回路および前記第２制御回路と、前記第１出力端子と、の間に配置され、前記第１出力端子に前記２極ステップモーターが接続された場合には前記第１駆動信号の供給を行い、前記第１出力端子に前記４極ステップモーターが接続された場合には前記第２駆動信号の供給を行う切替回路と、を含む。 One aspect of the electronic watch of the present invention is characterized by including a motor drive circuit.
According to this aspect, the at least one first output terminal can be used both for the first drive signal and for the second drive signal, so that the first output terminal can be compared to the case where neither of the first output terminals is used at the same time. It is possible to reduce the number. For this reason, downsizing of the configuration (electronic watch) is possible.
In one aspect of the motor drive circuit according to the present invention, a first control circuit for outputting a first drive signal for driving a two-pole step motor having one coil and two input terminals, and two coils and 4 A second control circuit for outputting a second drive signal for driving a four-pole step motor having one input terminal, the two input terminals of the two-pole step motor, or the four of the four-pole step motor Disposed between two first output terminals connected to any one of two input terminals of the input terminals, the first control circuit and the second control circuit, and the first output terminal. And the first drive signal is supplied when the two-pole step motor is connected to the first output terminal, and when the four-pole step motor is connected to the first output terminal. Comprising a switching circuit for supplying the second driving signal.

Claims

A first control circuit that outputs two first drive signals for driving a first step motor having one coil;
a second control circuit for outputting n (n is an integer from p + 1 to 2p) second drive signals for driving a second step motor having p (p is an integer of 2 or more) coils;
m (m is an integer not less than n and not more than n + 1) number of first output terminals,
Supply of the two first drive signals to the two first output terminals of the m, and the n second drive signals to the n first output terminals of the m Selection means for selectively supplying
And a motor drive circuit characterized by comprising:

The motor drive circuit according to claim 1, wherein the first control circuit, the second control circuit, the m first output terminals and the selection means are integrated in an IC.

3. The motor drive circuit according to claim 1, wherein the selection means is a third control circuit which operates the first control circuit and the second control circuit alternatively.

The motor drive circuit according to any one of claims 1 to 3, wherein m is the same value as n.

The m first output terminals include two second output terminals,
The selection means is a switching circuit that switches the input to the two second output terminals between the two first drive signals and the two second drive signals among the n. Including
The motor drive circuit according to claim 4, characterized in that:

A storage circuit storing switching information for controlling the switching circuit;
The switching circuit switches the input to the two second output terminals based on switching information stored in the storage circuit.
The motor drive circuit according to claim 5, characterized in that:

Including input terminals,
The switching circuit switches the input to the two second output terminals based on a signal received by the input terminal.
The motor drive circuit according to claim 5, characterized in that:

The switching circuit is configured to switch a switch for switching the input to the two second output terminals between the two first drive signals and the two second drive signals of the n. 5. The motor drive circuit of claim 4 including:

A movement comprising the motor drive circuit according to any one of claims 1 to 8.

An electronic watch comprising the motor drive circuit according to any one of claims 1 to 8.

  A first control circuit for outputting a first drive signal for driving a two-pole step motor having one coil and two input terminals;
  A second control circuit for outputting a second drive signal for driving a four-pole step motor having two coils and four input terminals;
  Two first output terminals connected to any one of the two input terminals of the two-pole step motor or two input terminals of the four input terminals of the four-pole step motor;
  The first drive signal is disposed between the first control circuit, the second control circuit, and the first output terminal, and when the two-pole step motor is connected to the first output terminal. A switching circuit that supplies the second drive signal when the four-pole step motor is connected to the first output terminal;
  And a motor drive circuit characterized by comprising: