JP3092167U - TV receiver and control device - Google Patents

Abstract

(57) [Problem] To provide a control device in which the speed of data communication between a microcomputer for controlling the operation of a main body and a memory for storing setting data via a serial communication bus is improved. A response signal receiving port (23) for receiving a response signal from an EEPROM (12) is provided separately from an input / output port (22) in a microcomputer (11).
When data is transferred to the OM 12, the EEPROM 1
2 can be confirmed at the response signal receiving port 23. Therefore, the microcomputer 11 sends an EEPRO
When data is transferred to M12, the state of the input / output port 22 can be maintained at the output. As a result, since the state of the input / output port 22 is not switched when data is transferred from the microcomputer 11 to the EEPROM 12, the communication speed can be improved and the communication time can be reduced.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  This device stores a microcomputer that controls the operation of the main unit and setting data. And a control device in which the memory to be connected is connected by a serial communication bus, and the control device The present invention relates to a television receiver.

[0002]

[Prior art]

  Conventionally, various types of electric appliances such as TV, video, DVD player, etc. A microcomputer that controls the operation (hereinafter referred to as a microcomputer) and setting data And a memory (EEPROM) for storing a serial communication bus such as an IIC bus The control device connected by and is used. For example, on TV, the audio output level, Store various setting data such as screen brightness and color tone in EEPROM. Every time, the microcomputer operates based on the setting data stored in the EEPROM. It controls the production, voice output and screen display.

[0003]

[Problems to be solved by the device]

  However, in the conventional control device, data transfer from the microcomputer to the memory For details, see JP-A-4-33153, JP-A-10-207834, and JP-A-11-1. No. 26178 and Japanese Patent Laid-Open No. 2000-231516, It was carried out in the procedure shown below.

[0004]   The microcomputer has a clock port that outputs a clock and data input / output. I / O ports are connected to clock line and data line respectively It

[0005] Microcomputer inputs / outputs a specified amount (1 byte) of data via the data line Sent to memory, Switch the input / output port that the microcomputer sent data from output to input, At the input / output port switched to input above, the response signal (A CK), After checking the response signal above, return this input / output port from input to output, Return to above. The above-described processes 1 to 3 are repeated until the data transfer is completed.

[0006]   In this way, in data communication between the microcomputer and memory, I / O port Repeat the process of switching the state of output to output, input, output ... Therefore, the time required for data communication between the microcomputer and memory is long. There was a problem.

[0007]   The purpose of this device is to control the operation of the main unit and the setting data. Improve the speed of data communication via the serial communication bus with the memory that stores To provide a control device and a television receiver to which the control device is applied. .

[0008]

[Means for Solving the Problems]

  The control device of the present invention has the following configuration in order to solve the above problems.

[0009]   A microcomputer that controls the operation of the main unit and a memory that stores setting data In a control device in which and are connected by a serial communication bus,   Clock port that outputs a clock to the above microcomputer, the above memo I / O port that inputs and outputs data to and from the memory The response signal receiving port that receives the response signal is separately provided, and the serial communication bus Are connected to these ports.

[0010]   In this configuration, the clock port that outputs the clock to the microcomputer, An input / output port that inputs and outputs data to and from a memory, such as an EEPROM. And the response signal receiving port that receives the response signal from the above memory separately. It is provided. Therefore, when transferring data from the microcomputer to the memory, , The microcomputer displays the response signal from the memory to the memory. The status of the I / O port that sent the data is not changed from output to input. The response signal from the memory can be confirmed at the response signal receiving port.

[0011]   Therefore, when transferring data from the microcomputer to the memory, Since the computer does not switch the state of the I / O port from output to input, the data The communication speed can be improved and the data communication time can be shortened.

[0012]

[Embodiment of device]

  An embodiment of a control device according to the present invention will be described below.

[0013]   FIG. 1 is a block diagram showing the configuration of a television receiver to which the control device according to the present invention is applied. FIG. The TV receiver 1 selects from broadcast waves received by an antenna (not shown). Receiver that extracts the selected channel signal (video signal and audio signal) 2, a display unit 3 for displaying a video based on the video signal extracted by the reception unit 2, and a reception unit 3. A voice output unit 4 for outputting a voice based on the voice signal extracted by the unit 2 and a main body Operation unit 5 for performing input operation and control unit 10 for controlling the operation of the main body of the television receiver 1 And are equipped with.

[0014]   The control unit 10 corresponds to the control device in this invention. The receiving unit 2 is a so-called chu And extracts the signal of the channel selected by the operation unit 5. Operation part 5 Is not only a switch for input operation to the main unit, but also a remote control not shown A receiving unit for receiving the control command transmitted from the device is also included. Control unit Reference numeral 10 denotes a reception unit 2, a display unit 3, and a voice according to an input operation on the operation unit 5. It functions as a control device that controls the operation of the output unit 4.

[0015]   FIG. 2 is a block diagram showing the configuration of the control unit. The control unit 10 includes a micro controller. Operation of computer 11 (hereinafter referred to as microcomputer 11) and main body of television receiver 1 An EEPROM 12 for storing setting data used for control is provided. EEPR On the OM 12, a voice level indicating the volume of the voice output from the voice output unit 4 and a display Setting data for setting the screen brightness, hue, and the like in the unit 3 is stored.

[0016]   As shown in FIG. 2, a clock port 21 for outputting a clock to the microcomputer 11 , Input / output port 22 for inputting / outputting data, and response from EEPROM 12 A response signal reception port 23 that receives a signal is provided. Clock port 2 1 is connected to the EEPROM 12 via a clock line 25 (SCL25), The input / output port 22 and the response signal receiving port 23 are connected to the data line 26 (SDA2 It is connected to the EEPROM 12 via 6). Input / output port 22 and response signal The SDA 26 connected to the reception port 23 is the same data line.

[0017]   Although not shown in FIG. 2, the microcomputer 11 is provided with a plurality of input / output ports 22. Elements other than the EEPROM 12 provided in the controller 10 (not shown) It is configured to be able to perform data communication also with.

[0018]   Data communication between the microcomputer 11 and the EEPROM 12 is via an IIC bus. It is carried out by Shin. In addition, the microcomputer 11 has a clock clock for counting clocks. Interface 11a is provided.

[0019]   Next, the data transfer operation from the microcomputer 11 to the EEPROM 12 will be described. To do. 3 and 4 are flowcharts showing a data transfer operation from the microcomputer to the EEPROM. 3 is a row chart, FIG. 3 shows the operation of the microcomputer, and FIG. 4 shows the operation of the EEPROM. It is a flowchart.

[0020]   The microcomputer 11 outputs the states of the clock port 21 and the input / output port 22. And the state of the response receiving port is input (s1). At this time the clock counter The count value of 11a has been reset. The microcomputer 11 synchronizes with the clock When 1 byte data is transmitted from the input / output port 22 (s2), the response signal is received. The response signal from the EEPROM 12 is confirmed at the port 23 (s3). Concrete Specifically, the input / output port 2 while counting clocks with the clock counter 11a When data is transmitted from 2 and the count value of the clock counter 11a reaches 9, (1 Once the byte data is sent), the data output from the I / O port 22 At the same time as stopping, the response signal receiving port 23 receives a response from the EEPROM 12. Check the answer signal.

[0021]   On the other hand, the EEPROM 12 is transmitted from the microcomputer 11 via the SDA 26. When receiving 1-byte data (s11), a response message is sent to the microcomputer 11. No. is returned (s12). EEPROM12 is a 1-byte data received in s11. Data in a predetermined area. In addition, the EEPROM 12 sends a response signal to the SDA 26. Is sent.

[0022]   The microcomputer 11 could not confirm the response signal from the EEPROM 12 in s3. In this case, it is judged that an error has occurred in the data transmission to the EEPROM 12, Error processing is performed (s4). On the contrary, the response signal from the EEPROM 12 is confirmed in s3. Then, the count value of the clock counter 11a is reset (s5), and the EEP It is determined whether the data transfer to the ROM 12 is completed (s6). My The controller 11 determines that the data transfer to the EEPROM 12 is not completed in s6. When it is determined, the process returns to s2 and the above process is repeated. Also, in s6, the EEPROM12 When it is determined that the data transfer to the is completed, this processing is ended.

[0023]   In this way, the data from the microcomputer 11 in the control unit 10 to the EEPROM 12 is When transferring data, the microcomputer 11 outputs the status of the I / O port 22 as before. , Input and output are not switched alternately, and that state is kept at output. Therefore, the time required for switching the state of the input / output port 22 can be eliminated. . As a result, it is possible to transfer data from the microcomputer 11 to the EEPROM 12. The transmission speed can be improved and the communication time can be shortened.

[0024]   In addition, in the television receiver 1, between the microcomputer 11 and the EEPROM 12, Since the data communication time in the The voice output in the voice output unit 4 is smoothly performed.

[0025]   In the above embodiment, the television receiver 1 is used as an example to control the device according to the present invention. However, the control device according to the present invention is not limited to the TV, and the video / DVD It can be applied to various types of electrical appliances such as layers.

[0026]

[Effect of device]

  As described above, according to the present invention, the response from the memory is given to the microcomputer. Since the response signal receiving port for receiving signals is provided separately from the input / output port, B) When transferring data from the computer to the memory, Continue to hold in output. That is, the data from the microcomputer to the memory Since the state of the I / O port is not switched during the transfer of data, the communication speed can be improved. Therefore, the communication time can be shortened.

[0027]   Further, in the television receiver of this invention, a microcomputer, a memory and Display of images on the display by shortening the data communication time between Also, the voice output section can smoothly output the voice.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a television receiver to which a control device according to the present invention is applied.

FIG. 2 is a block diagram showing a configuration of a control unit.

FIG. 3 is a flowchart showing an operation of the microcomputer in transferring data from the microcomputer to the EEPROM.

FIG. 4 is a flowchart showing the operation of the EEPROM in transferring data from the microcomputer to the EEPROM.

[Explanation of symbols]

1-TV receiver 2-Receiver 3-Display 4-Voice output section 5-Operation part 10-Control unit 11-Microcomputer 11a-clock counter 12-EEPROM 21-clock port 22-I / O port 23-Response signal receiving port 25-clock line (SCL) 26-Data line (SDL)

Claims (5)

[Scope of utility model registration request] 1. A control unit in which a microcomputer for controlling the operation of the main body and an EEPROM for storing setting data are connected to each other by a serial communication bus, and a video image corresponding to a broadcast signal of a selected channel and In a television receiver that outputs audio, the control unit sends to the microcomputer a clock port that outputs a clock, an input / output port that inputs and outputs data to and from the EEPROM, and a response signal from the EEPROM. The response signal receiving ports for receiving are provided separately, the serial communication bus is connected to these ports, and the state of the input / output port is not switched every time a predetermined amount of data is sent from the input / output port. The presence of the response signal from the EEPROM at the response signal receiving port TV receiver to confirm. 2. A control device in which a microcomputer for controlling the operation of the main body and an EEPROM for storing setting data are connected by a serial communication bus, a clock port for outputting a clock to the microcomputer, and the EEPROM. Between the input / output port for inputting / outputting data and the response signal receiving port for receiving the response signal from the EEPROM are separately provided, and the serial communication bus is connected to these ports and Each time a predetermined amount of data is sent, without changing the state of the input / output port,
A control device for confirming the presence / absence of a response signal from the EEPROM at the response signal receiving port. 3. A control device in which a microcomputer that controls the operation of the main body and a memory that stores setting data are connected by a serial communication bus, and a clock port that outputs a clock to the microcomputer, and the memory. And a response signal receiving port for receiving a response signal from the memory, and the serial communication bus is connected to these ports. 4. The microcomputer checks the presence / absence of a response signal from the memory at the response signal receiving port without switching the state of the input / output port each time a predetermined amount of data is transmitted from the input / output port. The control device according to claim 3. 5. The control device according to claim 3, wherein the memory is an EEPROM.