A clock control circuit, a PCB board and a controller thereof

Abstract

The utility model discloses a clock control circuit, PCB board and controller thereof, including power input unit, main control unit, display unit, speech processing unit, motor drive unit and motor part, power input unit is electric connection with main control unit, speech processing unit and motor drive unit respectively, main control unit is electric connection with display unit and speech processing unit respectively, motor drive unit is electric connection with speech processing unit and motor part respectively, when main control unit sends prompt signal to speech processing unit, speech processing unit feedback motor drive unit controls motor part action, through setting speech processing unit and motor drive unit, make electronic clock increase action prompt while voice prompt, improve the prompt effect of electronic clock significantly.

Description

Technical Field

[0001] This utility model relates to the field of electronic clock technology, and in particular to a clock control circuit, PCB board and controller thereof. Background Technology

[0002] Existing electronic clocks are relatively limited in functionality, and their overall information display is less than ideal. Most of these clocks only offer basic time display functions, lacking diverse auxiliary features. Although some electronic clocks have attempted to incorporate voice functionality to improve user experience, the overall display effect remains significantly inadequate. This deficiency is mainly reflected in the inability to fully and effectively deliver the expected information display, making it difficult for users to obtain satisfactory information notifications.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a clock control circuit, which, by setting up a voice processing unit and a motor drive unit, enables the electronic clock to add action prompts while providing voice prompts, thereby significantly improving the prompting effect of the electronic clock.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A clock control circuit includes a power input unit, a main control unit, a display unit, a voice processing unit, a motor drive unit, and a motor unit. The power input unit is electrically connected to the main control unit, the voice processing unit, and the motor drive unit. The main control unit is electrically connected to the display unit and the voice processing unit. The motor drive unit is electrically connected to the voice processing unit and the motor unit. When the main control unit sends a prompt signal to the voice processing unit, the voice processing unit responds by controlling the motor drive unit to operate the motor unit.

[0007] In the clock control circuit, the main control unit includes a first control chip U1, a crystal oscillator unit, and a button unit for setting the internal time of the first control chip U1. Pins 1 and 14 of the first control chip U1 are respectively connected to the power input unit. Pins 4 and 5 of the first control chip U1 are respectively connected to the crystal oscillator unit. Pins 7, 8, 9, 10, 12, 13, 19, 20, 21, 22, 23, and 24 of the first control chip U1 are respectively connected to the display unit. Pins 15 to 18 of the first control chip U1 are respectively connected to the button unit. Pin 25 of the first control chip U1 is connected to the voice processing unit.

[0008] In the clock control circuit, the power input unit includes a current sampling section, a first step-down section, and a second step-down section. The input terminals of the first step-down section and the current sampling section are connected to an external input voltage terminal. The output terminal of the current sampling section is connected to pin 14 of the first control chip U1. The output terminal of the first step-down section is connected to the input terminal of the second step-down section and the motor drive unit, respectively. The output terminal of the second step-down section is connected to pin 1 of the first control chip U1 and the voice processing unit, respectively.

[0009] In the clock control circuit, the voice processing unit includes a second control chip U2, a first transistor Q1, and a speaker. Pin 2 of the second control chip U2 is connected to the base of the first transistor Q1. The speaker is connected to the collector of the first transistor Q1 and the power input unit. The emitter of the first transistor Q1 is grounded. Pins 3 and 4 of the second control chip U2 are connected to the power input unit. Pin 7 of the second control chip U2 is connected to pin 25 of the first control chip U1. Pins 6 and 8 of the second control chip U2 are connected to the motor drive unit.

[0010] In the clock control circuit, the motor drive unit includes a third control chip U3. Pins 1 and 3 of the third control chip U3 are connected to pins 8 and 6 of the second control chip U2, pin 4 of the third control chip U3 is connected to the power input unit, and pins 5 and 8 of the third control chip U3 are connected to the negative and positive terminals of the motor.

[0011] In the clock control circuit, the main control unit includes a temperature measurement unit, which is connected to pins 26 to 27 of the first control chip U1; the temperature measurement unit is used to measure the operating temperature of the clock control circuit.

[0012] In the clock control circuit, the temperature measurement unit includes a thermistor RT1, a third resistor R3, and a fifth capacitor C5. One end of the thermistor RT1 is connected to pin 26 of the first control chip U1, and the other end of the thermistor RT1 and one end of the third resistor R3 are connected to pin 27 of the first control chip U1. One end of the fifth capacitor C5 at the other end of the third resistor R3 is connected to pin 28 of the first control chip U1, and the other end of the fifth capacitor C5 is grounded.

[0013] In the clock control circuit, the display unit includes a second socket J2, a third socket J3, and a common cathode digital tube SM1. Pins 7, 8, 9, 10, 12, 13, 19, 20, 21, 22, 23, and 24 of the first control chip U1 are respectively connected to the second socket J2. Pins 1 to 12 of the common cathode digital tube SM1 are respectively connected to the third socket J3. The second socket J2 and the third socket J3 are connected.

[0014] This application also provides a PCB board printed with the clock control circuit described above.

[0015] This application also provides a controller that uses the clock control circuit described above for operation control.

[0016] Beneficial effects:

[0017] This invention provides a clock control circuit. Traditional electronic clocks rely solely on screen display or simple buzzers for alerts, which are ineffective in noisy environments or for users with visual impairments, and lack sufficient interactivity. Therefore, this circuit replaces the single buzzer with voice playback, using a voice processing unit to broadcast information in natural language, enhancing clarity. Furthermore, by combining a motor drive unit and motor components, physical motion is generated. When the voice processing unit sends a control signal to the motor drive unit, the motor components will produce physical motion, generating specific tactile or visual stimuli, thereby improving the clock's alerting effect. Attached Figure Description

[0018] Figure 1 A circuit block diagram of the clock control circuit provided by this utility model;

[0019] Figure 2 The circuit structure diagram of the clock control circuit provided by this utility model.

[0020] Explanation of key component symbols: 1-Power input unit, 2-Main control unit, 3-Display unit, 4-Voice processing unit, 5-Motor drive unit, 6-Motor section. Detailed Implementation

[0021] This utility model provides a clock control circuit, a PCB board, and a controller thereof. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] In the description of this utility model, it should be understood that the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0023] Please see Figures 1 to 2 This utility model provides a clock control circuit, including a power input unit 1, a main control unit 2, a display unit 3, a voice processing unit 4, a motor drive unit 5, and a motor section 6. The power input unit 1 is electrically connected to the main control unit 2, the voice processing unit 4, and the motor drive unit 5. As the power center of the circuit, the power input unit 1 provides power support to the main control unit 2, the voice processing unit 4, and the motor drive unit 5, ensuring the stable operation of each unit. The main control unit 2 is electrically connected to the display unit 3 and the voice processing unit 4. The motor drive unit 5 is electrically connected to the voice processing unit 4 and the motor section 6. When the main control unit 2 sends a prompt signal to the voice processing unit 4, the voice processing unit 4 responds to the motor drive unit 5. The motor unit 6 is controlled to move. The motor drive unit 5 is located at the intermediate node between the voice processing unit 4 and the motor unit 6. After receiving the control signal from the voice processing unit 4, it converts the electrical signal into an action command that the motor can execute. Since traditional electronic clocks only display the time on the screen or use a simple buzzer alarm, the prompting effect is poor in noisy environments, visually impaired user scenarios, etc., and lacks interactivity. Therefore, voice playback is used to replace the monotonous buzzing sound. The voice processing unit 4 uses natural language to improve the clarity of information transmission. In addition, the motor drive unit 5 and the motor unit 6 form physical actions. When the voice processing unit 4 feeds back the control signal to the motor drive unit 5, the motor unit 6 generates physical actions (such as vibration, rotation, swing, extension and retraction) to form special tactile or visual stimulation, thereby improving the prompting effect of the electronic clock.

[0024] The working principle of this application is as follows: The main control unit 2 generates time data based on the internal crystal oscillator circuit and transmits it to the display unit 3 in real time for visualization. At this time, the system is in a normal timing state. When the alarm time, timed task, or other preset event set by the user arrives, the main control unit 2 sends an electrical signal to the voice processing unit 4. This signal contains information such as the prompt type (e.g., alarm clock, hourly chime) and voice content instructions. When the voice processing unit 4 receives the prompt signal, it calls the built-in voice library or externally stored audio file to drive the speaker to play the voice prompt. While the voice is playing, the voice processing unit 4 feeds back a control signal to the motor drive unit 5. The motor drive unit 5 converts the signal into current or voltage pulses to drive the motor 6 to perform preset actions: if the motor 6 is a vibration motor, it can produce a vibration effect to enhance tactile cues; if it is a rotary motor, it can drive the decorative parts of the clock casing (e.g., hands, dolls) to move, forming visual feedback; if it is a multi-axis motor, it can combine with the voice content to achieve dynamic demonstration (e.g., the motor drives the hands to swing when chiming).

[0025] like Figures 1 to 2 As shown, the main control unit 2 further includes a first control chip U1, a crystal oscillator unit, and a button unit for setting the internal time of the first control chip U1. Pins 1 and 14 of the first control chip U1 are respectively connected to the power input unit 1. Pins 4 and 5 of the first control chip U1 are respectively connected to the crystal oscillator unit. Pins 7, 8, 9, 10, 12, 13, 19, 20, 21, 22, 23, and 24 of the first control chip U1 are respectively connected to the display unit 3. Pins 15 to 18 of the first control chip U1 are respectively connected to the button unit. Pin 25 of the first control chip U1 is connected to the voice processing unit 4.

[0026] In this embodiment, the crystal oscillator unit is connected to pins 4 and 5 of the first control chip U1. The crystal oscillator unit provides a precise time reference for the chip by generating a stable oscillation signal. The crystal oscillator utilizes the piezoelectric effect of quartz crystals to convert electrical energy into mechanical energy and then back into electrical energy, generating a highly stable periodic oscillation signal. This signal is input to the clock circuit inside the first control chip U1, and after frequency division and other processing, forms the system clock required for chip operation, ensuring the accuracy of timekeeping and the synchronous operation of various functional modules. The button unit is connected to pins 15 to 18 of the first control chip U1, enabling human-computer interaction. Users can operate the buttons, such as setting the time, adjusting the alarm, or switching modes. The electrical signals generated by the button actions are transmitted to the corresponding pins of the control chip. After receiving the signal, the chip parses the user's instructions and executes the corresponding operations, realizing personalized settings for the clock function. Pins 7, 8, 9, 10, 12, 13, 19, 20, 21, 22, 23, and 24 of the first control chip U1 are connected to the display unit 3. The first control chip U1 transmits the processed time data, alarm status, setting information, etc., to the display unit 3 in the form of electrical signals through these pins, driving the display unit 3 to perform visual presentation, such as displaying the current time and date on an LED / LCD screen. Pin 25 of the first control chip U1 is connected to the voice processing unit 4. When the preset time trigger condition (such as alarm time, timed task time) is reached, the first control chip U1 sends a prompt signal to the voice processing unit 4 through pin 25, including information such as prompt type and voice content command, and starts the voice broadcast function.

[0027] In this embodiment, the first control chip U1 is a microcontroller chip with the model number HD8P820-SSOP28.

[0028] In one embodiment, the crystal oscillator unit includes a crystal oscillator X1, a third capacitor C3, and a fourth capacitor C4. One end of the crystal oscillator X1 is connected to one end of the third capacitor C3 and pin 5 of the first control chip U1, the other end of the third capacitor C3 is grounded, and the other end of the crystal oscillator X1 is connected to one end of the fourth capacitor C4 and pin 4 of the first control chip U1.

[0029] In one embodiment, the button unit includes a first button S1, a second button S2, a third button S3, and a fourth button S4. One end of the first button S1, one end of the second button S2, one end of the third button S3, and one end of the fourth button S4 are sequentially connected to pins 18, 17, 16, and 15 of the first control chip U1. The other ends of the first button S1, the second button S2, the third button S3, and the fourth button S4 are grounded.

[0030] like Figures 1 to 2 As shown, the power input unit 1 further includes a current sampling section, a first step-down section, and a second step-down section. The input terminals of the first step-down section and the current sampling section are connected to an external input voltage terminal. The output terminal of the current sampling section is connected to pin 14 of the first control chip U1. The output terminal of the first step-down section is connected to the input terminal of the second step-down section and the motor drive unit 5, respectively. The output terminal of the second step-down section is connected to pin 1 of the first control chip U1 and the voice processing unit 4, respectively.

[0031] In this embodiment, the input terminal of the current sampling unit is connected to the external input voltage terminal to monitor the current state of the circuit in real time. The current sampling unit uses a resistor to sample the external input voltage terminal, converting the current signal in the circuit into a voltage signal. The converted voltage signal is transmitted to pin 14 of the first control chip U1, providing current data to the first control chip U1 so that the main control unit 2 can monitor and manage the power consumption of the circuit. For example, when an overcurrent occurs in the circuit, the main control unit 2 can take timely protective measures based on the sampled data to avoid damage to circuit components. The first step-down unit is connected to the external input voltage terminal and performs the function of initial voltage reduction. It reduces the external input 5V voltage to 4.5V, and through a step-down circuit (such as a switching power supply step-down topology or a linear step-down circuit), reduces it to an intermediate voltage suitable for subsequent circuit use. This intermediate voltage is supplied to the motor drive unit 5 to provide the power required for the motor to operate; on the other hand, it is transmitted to the second step-down unit as its input voltage. The second step-down section takes the intermediate voltage output from the first step-down section as input and further performs step-down processing, reducing the voltage to a value that meets the operating requirements of the first control chip U1 and the voice processing unit 4, namely 3.3V. The processed stable voltage is then sent to pin 1 of the first control chip U1 and the voice processing unit 4, respectively.

[0032] In this embodiment, the first step-down section is a step-down rectifier circuit composed of a first diode D1 and a first capacitor C1.

[0033] In this embodiment, the second step-down section is a step-down rectifier circuit composed of a second diode D2 and a second capacitor C2.

[0034] like Figures 1 to 2 As shown, the voice processing unit 4 further includes a second control chip U2, a first transistor Q1, and a speaker. Pin 2 of the second control chip U2 is connected to the base of the first transistor Q1. The speaker is connected to the collector of the first transistor Q1 and the power input unit 1. The emitter of the first transistor Q1 is grounded. Pins 3 and 4 of the second control chip U2 are connected to the power input unit 1. Pin 7 of the second control chip U2 is connected to pin 25 of the first control chip U1. Pins 6 and 8 of the second control chip U2 are connected to the motor drive unit 5.

[0035] In this embodiment, the second control chip U2 parses and processes the prompt signals sent by the main control unit 2, ensuring the accuracy of the content retrieved from the voice library. It can also adjust parameters such as volume and speed of voice playback according to different commands, making the voice prompts more user-friendly and meeting diverse user needs. The introduction of the first transistor Q1 effectively solves the problem of insufficient chip output signal power. Through current amplification, sufficient driving capability is provided to the speaker, ensuring that the speaker can clearly play the voice content. Even in noisy environments, users can clearly hear the prompts, improving the effectiveness of the voice prompts. The connection design between the voice processing unit 4 and the motor drive unit 5 allows for close coordination between voice prompts and motor actions. In scenarios such as alarm clock triggering and timed reminders, the motor unit 6 performs actions (such as vibration and rotation) simultaneously with the voice broadcast.

[0036] In one embodiment, the second control chip U2 is an audio management chip with model number 5Q35.

[0037] like Figures 1 to 2 As shown, the motor drive unit 5 further includes a third control chip U3. Pins 1 and 3 of the third control chip U3 are connected to pins 8 and 6 of the second control chip U2, pin 4 of the third control chip U3 is connected to the power input unit 1, and pins 5 and 8 of the third control chip U3 are connected to the negative and positive terminals of the motor unit 6, respectively.

[0038] In this embodiment, the second control chip U2 is responsible for receiving instructions, processing signals, and outputting power signals to drive the motor. Its pins 1 and 3 are connected to pins 8 and 6 of the second control chip U2, respectively, to receive control signals from the voice processing unit 4. Pin 4 is connected to the power input unit 1 to obtain a stable operating voltage, providing energy for the chip's internal logic operations and power drive. Pins 5 and 8 are connected to the negative and positive terminals of the motor section 6, respectively, controlling the motor's operating state by outputting different current directions and magnitudes. After receiving the prompt signal from the main control unit 2 and completing voice processing, the second control chip U2 sends motor control instructions to the third control chip U3 via pins 6 and 8. These instructions include information such as motor operating mode (e.g., forward rotation, reverse rotation, start / stop, speed adjustment), and are transmitted to the corresponding pins of the third control chip U3 in the form of electrical signals.

[0039] Specifically, when the voice processing unit 4 activates the voice prompt function, the second control chip U2 synchronously sends a motor control signal to the third control chip U3. For example, in an alarm clock trigger scenario, the second control chip U2 sends a "motor start and forward rotation" command, which is transmitted to pins 1 and 3 of the third control chip U3 via pins 6 and 8. After receiving the signal, the third control chip U3 uses its internal logic circuit to decode and analyze the signal, identifying the specific motor control command. According to the command requirements, the internal drive circuit of the chip generates the corresponding control signal, adjusting the output state of pins 5 and 8. The third control chip U3 outputs a drive signal to the motor unit 6 via pins 5 and 8. If the motor needs to rotate forward, the chip outputs a high level on pin 8 and a low level on pin 5, forming a current loop to drive the motor to rotate forward; if the motor needs to rotate in reverse, the pin level state is changed to reverse the current direction; if the motor speed needs to be adjusted, the chip can use pulse width modulation technology to change the duty cycle of the output signal, controlling the average operating voltage of the motor, thereby achieving speed regulation.

[0040] In this embodiment, the third control chip U3 is a driver chip with the model number DR8020.

[0041] like Figures 1 to 2 As shown, the main control unit 2 further includes a temperature measuring unit, which is connected to pins 26 to 27 of the first control chip U1. The temperature measuring unit is used to measure the operating temperature of the clock control circuit. The operating temperature of the clock control circuit is collected in real time by the temperature measuring unit. When the operating temperature reaches the preset temperature threshold, the first control chip U1 will make corresponding shutdown control to avoid the clock control circuit from overheating.

[0042] like Figures 1 to 2As shown, the temperature measuring unit further includes a thermistor RT1, a third resistor R3, and a fifth capacitor C5. One end of the thermistor RT1 is connected to pin 26 of the first control chip U1, and the other end of the thermistor RT1 and one end of the third resistor R3 are connected to pin 27 of the first control chip U1. One end of the fifth capacitor C5 at the other end of the third resistor R3 is connected to pin 28 of the first control chip U1, and the other end of the fifth capacitor C5 is grounded.

[0043] In this embodiment, the thermistor RT1 has high sensitivity to temperature changes and is used to acquire the operating temperature of the clock control circuit. The third resistor R3 and the fifth capacitor C5 form an RC circuit, which effectively ensures the stability and purity of the voltage signal. The voltage divider circuit ensures that temperature changes are linearly reflected as voltage changes, while the filter capacitor eliminates the influence of external interference on the signal and reduces measurement errors.

[0044] like Figures 1 to 2 As shown, the display unit 3 further includes a second connector J2, a third connector J3, and a common cathode digital tube SM1. Pins 7, 8, 9, 10, 12, 13, 19, 20, 21, 22, 23, and 24 of the first control chip U1 are respectively connected to the second connector J2. Pins 1 to 12 of the common cathode digital tube SM1 are respectively connected to the third connector J3. The second connector J2 and the third connector J3 are connected. By setting the second connector J2 and the third connector J3, it is convenient to quickly connect and disconnect the common cathode digital tube SM1 and the first control chip U1, and it is convenient to replace the common cathode digital tube SM1.

[0045] This application also provides a switching power supply PCB board with the clock control circuit described above printed on it.

[0046] This application also provides a controller that uses the clock control circuit described above for operation control.

[0047] In summary, traditional electronic clocks rely solely on screen displays or simple buzzers for alarms, which are less effective in noisy environments or for users with visual impairments, and lack sufficient interactivity. Therefore, this circuit replaces the single buzzer with voice playback, using the voice processing unit 4 to broadcast information in natural language, enhancing clarity. Furthermore, by combining the motor drive unit 5 and the motor component 6, physical action is achieved. When the voice processing unit 4 sends a control signal to the motor drive unit 5, the motor component 6 will generate physical action, producing unique tactile or visual stimulation, thereby improving the clock's alerting effect.

[0048] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A clock control circuit, characterized in that, The device includes a power input unit, a main control unit, a display unit, a voice processing unit, a motor drive unit, and a motor unit. The power input unit is electrically connected to the main control unit, the voice processing unit, and the motor drive unit. The main control unit is electrically connected to the display unit and the voice processing unit. The motor drive unit is electrically connected to the voice processing unit and the motor unit. When the main control unit sends a prompt signal to the voice processing unit, the voice processing unit responds by having the motor drive unit control the motor unit to operate.

2. The clock control circuit according to claim 1, characterized in that, The main control unit includes a first control chip U1, a crystal oscillator unit, and a button unit for setting the internal time of the first control chip U1. Pins 1 and 14 of the first control chip U1 are respectively connected to the power input unit. Pins 4 and 5 of the first control chip U1 are respectively connected to the crystal oscillator unit. Pins 7, 8, 9, 10, 12, 13, 19, 20, 21, 22, 23, and 24 of the first control chip U1 are respectively connected to the display unit. Pins 15 to 18 of the first control chip U1 are respectively connected to the button unit. Pin 25 of the first control chip U1 is connected to the voice processing unit.

3. The clock control circuit according to claim 2, characterized in that, The power input unit includes a current sampling section, a first step-down section, and a second step-down section. The input terminals of the first step-down section and the current sampling section are connected to an external input voltage terminal. The output terminal of the current sampling section is connected to pin 14 of the first control chip U1. The output terminal of the first step-down section is connected to the input terminal of the second step-down section and the motor drive unit, respectively. The output terminal of the second step-down section is connected to pin 1 of the first control chip U1 and the voice processing unit, respectively.

4. The clock control circuit according to claim 2, characterized in that, The voice processing unit includes a second control chip U2, a first transistor Q1, and a speaker. Pin 2 of the second control chip U2 is connected to the base of the first transistor Q1. The speaker is connected to the collector of the first transistor Q1 and the power input unit. The emitter of the first transistor Q1 is grounded. Pins 3 and 4 of the second control chip U2 are connected to the power input unit. Pin 7 of the second control chip U2 is connected to pin 25 of the first control chip U1. Pins 6 and 8 of the second control chip U2 are connected to the motor drive unit.

5. The clock control circuit according to claim 4, characterized in that, The motor drive unit includes a third control chip U3. Pins 1 and 3 of the third control chip U3 are connected to pins 8 and 6 of the second control chip U2, pin 4 of the third control chip U3 is connected to the power input unit, and pins 5 and 8 of the third control chip U3 are connected to the negative and positive terminals of the motor.

6. The clock control circuit according to claim 2, characterized in that, The main control unit includes a temperature measurement unit, which is connected to pins 26 and 27 of the first control chip U1; the temperature measurement unit is used to measure the operating temperature of the clock control circuit.

7. The clock control circuit according to claim 6, characterized in that, The temperature measuring unit includes a thermistor RT1, a third resistor R3, and a fifth capacitor C5. One end of the thermistor RT1 is connected to pin 26 of the first control chip U1, and the other end of the thermistor RT1 and one end of the third resistor R3 are connected to pin 27 of the first control chip U1. One end of the fifth capacitor C5, which is connected to the other end of the third resistor R3, is connected to pin 28 of the first control chip U1, and the other end of the fifth capacitor C5 is grounded.

8. The clock control circuit according to claim 2, characterized in that, The display unit includes a second connector J2, a third connector J3, and a common cathode digital tube SM1. Pins 7, 8, 9, 10, 12, 13, 19, 20, 21, 22, 23, and 24 of the first control chip U1 are respectively connected to the second connector J2. Pins 1 to 12 of the common cathode digital tube SM1 are respectively connected to the third connector J3. The second connector J2 and the third connector J3 are connected.

9. A PCB board, characterized in that, The PCB board is printed with a clock control circuit as described in any one of claims 1-8.

10. A controller, characterized in that, The controller uses a clock control circuit as described in any one of claims 1-8 for operation control.

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