JP2004289645A - Composite electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite electronic apparatus capable of initializing by a single operation, reducing processing loads imposed on microcomputers, and saving its memory capacity required for processing. <P>SOLUTION: An initial set value is stored in the ROM 12 of the microcomputer 12, the necessary initial set value is written in an EEPROM 13 when an initialization command is inputted, and the microcomputer 1 transmits an initialization command to the microcomputer 2 when the initialization of a functional block of TV and VCR is finished. When the microcomputer 2 receives the initialization command, the microcomputer 2 writes the initial set value stored in the ROM 22 in an EEPROM 23 and initializes a DVD functional block. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a TV (abbreviation of "TeleVision"), a VCR (abbreviation of "Video Cassette Recorder"), a DVD (abbreviation of "Digital Versatile Disk" and its recording / reproducing device), and an HDD ("Hard Disk Drive"). ), And a composite electronic device in which electronic devices such as a composite electronic device are integrated.
[0002]
[Prior art]
2. Description of the Related Art In recent years, composite electronic devices in which electronic devices related to video information such as TVs, VCRs, DVDs, and HDDs are combined and integrated have been put to practical use. By integrating such electronic devices, there is an advantage that the devices themselves can be made more compact than when each electronic device is used alone, and information can be transmitted between the devices at high speed.
[0003]
Such a composite electronic device includes a microcomputer for controlling each functional block such as a TV, a VCR, a DVD, and an HDD. A specific functional block-for example, a microcomputer for controlling the VCR also has a main control that also controls the entire device. And other functional blocks-for example, a microcomputer that controls a DVD is used as a sub-control unit to transmit and receive control signals between them to control devices.
[0004]
In the electronic devices described above, for example, in the case of a TV, sound quality adjustment values such as volume and image quality adjustment values such as brightness and brightness are initialized at the time of factory shipment or at the time of failure. As the initial setting value, data is set assuming an average use situation when using the device, and the user actually uses the device and changes the initial setting value to a desired value. For example, in Patent Literature 1, data of a predetermined fixed value is written in a copy address of a nonvolatile memory, and the microcomputer sets a fixed value stored in the nonvolatile memory when the set value is the fixed value. It is described that a factory setting value in a ROM is read and transmitted to a corresponding circuit unit. In Patent Document 2, data corresponding to each program of a main microcomputer and a sub-microcomputer and a discrimination code corresponding to the program are written in one nonvolatile memory. If the discrimination code is a predetermined value, the data and the discrimination code are read out from the sub-microcomputer, and if the discrimination code is any other value, the data and the discrimination code are transferred to the sub microcomputer and It is described that if the value is a predetermined value, processing is performed using the data.
[0005]
[Patent Document 1]
Registered Utility Model No. 3077824 [Patent Document 2]
JP-A-9-6607
[Problems to be solved by the invention]
In Patent Document 1 described above, there is no problem when used for a single electronic device. However, in a composite electronic device, an initialization process is required for each microcomputer of each functional block, which complicates the work and reduces the work efficiency accordingly. There is a risk. Even when the operator needs to perform initialization due to a device failure or the like, it is necessary to transmit an initialization command for each microcomputer, which increases the operation burden.
[0007]
In addition, with the increase in performance and multifunctionality of the composite electronic device, the items required for the initialization process have been dramatically increased, and the initialization process is performed by one non-volatile memory as in Patent Document 2. This means that the processing load on the main microcomputer increases and the processing time for initialization increases.
[0008]
Therefore, an object of the present invention is to provide a composite electronic device that can perform initialization processing of the composite electronic device with a single operation, can reduce the processing load on the microcomputer, and can save the memory capacity required for the processing. Things.
[0009]
[Means for Solving the Problems]
The composite electronic device according to the present invention is a composite electronic device including a specific function block having a main storage unit and a main control unit, and a function block having a sub storage unit and a sub control unit, wherein the main storage unit is Means for storing at least an initial setting value of the specific function block, wherein the main control unit reads the initial setting value from the main storage unit in response to an initialization signal and initializes the specific function block; Means for transmitting an initialization signal of another function block to the sub-control unit after the completion of the initialization of the specific function block, and the sub-storage unit stores an initial setting value of the function block. The sub control unit reads the initial setting value from the sub storage unit in response to the initialization signal of the function block transmitted from the main control unit, and initializes the function block. Characterized in that it comprises a.
[0010]
Another composite electronic device according to the present invention is a composite electronic device including a specific functional block having a main storage unit and a main control unit, and a functional block having a sub storage unit and a sub control unit, wherein the main storage unit Stores at least an initial setting value of the specific function block, the main control unit transmits an initialization signal of another function block to the sub control unit in response to an initialization signal, Means for reading out the initial setting value from the main storage unit after the initialization of the functional block is completed and initializing the specific function block, and the sub-storage unit comprises an initial setting value of the functional block. The sub control unit reads the initial setting value from the sub storage unit in response to the initialization signal of the function block transmitted from the main control unit, and initializes the function block. hand Characterized in that it comprises a.
[0011]
Further, in the composite electronic device, the main storage unit stores an initial setting value of each function block, and the sub storage unit stores an initial setting value of the function block read from the main storage unit. Is written. Furthermore, the main storage unit and the sub-storage unit store an initial set value in a nonvolatile memory.
[0012]
With the above-described configuration, when the main control unit of the specific function block receives the initialization signal, the initialization signal of another function block is transmitted. If performed once, the initialization processing of all functional blocks is performed. In addition, since the initialization processing of each functional block is performed by each control unit, the processing load is not applied only to the main control unit.
[0013]
The main storage unit stores at least the initial setting value of the specific function block, and the sub-control unit stores the initial setting value of the function block, thereby distributing the initial setting value. And the memory capacity of each storage unit can be small, and the cost can be reduced accordingly.
[0014]
Furthermore, by storing the initial setting value of each function block in the main storage unit and writing the initial setting value of the function block read from the main storage unit in the sub-storage unit, the initial setting value can be stored in the main storage unit. The storage unit can be centrally managed, and the work of setting the initial set values can be performed efficiently. Further, by writing the initial setting value only when necessary in the secondary storage unit, the memory capacity of the secondary storage unit can be saved. Furthermore, if the main storage unit and the sub-storage unit include a nonvolatile memory and store the initial set value in the nonvolatile memory, the storage process and the update process of the initial set value can be easily performed. become.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments according to the present invention will be described in detail. Note that the embodiments described below are preferred specific examples for carrying out the present invention, and therefore, various technical limitations are made. However, the present invention is particularly limited in the following description. It is not limited to these forms unless otherwise specified.
[0016]
FIG. 1 is an overall block diagram of an embodiment according to the present invention. In this example, a composite electronic device in which three functional blocks, TV, VCR, and DVD, are compositely integrated is shown. The TV and the VCR are controlled by one microcomputer.
[0017]
The functional blocks of the TV and VCR have a microcomputer 1 as a main control unit. The microcomputer 1 has a CPU 10 for performing arithmetic processing, a RAM 11 for temporarily storing data and the like necessary for arithmetic processing, a program and setting data. And the like are provided in the ROM 12. An EEPROM 13 is connected to the microcomputer 1 as an external memory, and programs and setting data are written as necessary. When the TV broadcast signal is received by the tuner 14 and input to the microcomputer 1, the broadcast signal is processed by the CPU 10 of the microcomputer 1 and transmitted to the video / audio signal processing unit 15. The video / audio signal processing unit 15 performs processing for displaying on the monitor 16. When the operator operates the remote controller 17, the operation signal is transmitted to the remote controller receiver 18 and input to the microcomputer 1. Then, necessary processing is performed in response to the operation signal. The information recorded on the video cassette 30 is read by the recording head 31, processed by the recording / reproducing unit 32, input to the microcomputer 1, processed like a TV broadcast signal, and displayed on the monitor 16. . When recording a TV broadcast program, the video and audio signals input from the tuner 14 to the microcomputer 1 are transmitted to the recording / reproducing unit 32, processed so as to be recordable, and recorded on the video cassette 30 by the recording head 31. Is done.
[0018]
The functional block of the DVD includes a microcomputer 2 as a sub-control unit. The microcomputer 2 includes a CPU 20 for performing arithmetic processing, a RAM 21 for temporarily storing data and the like necessary for arithmetic processing, programs and setting data, and the like. A written ROM 22 is provided. An EEPROM 23 is connected to the microcomputer 2 as an external memory, and programs and setting data are written as necessary. The information recorded on the optical disk 24 is read by the pickup 25, processed by the recording / reproducing unit 26, and transmitted to the digital signal processing unit 27. The video signal and the audio signal analogized by the digital signal processing unit are transmitted to the TV function block and displayed on the monitor 16. When recording a TV broadcast program, the analog video and audio signals are transmitted from the TV function block to the DVD function block, digitized by the digital signal processing unit 27, and can be recorded by the recording / reproducing unit 26. And recorded on the optical disc 24 by the pickup 25.
[0019]
In the ROM 12 of the microcomputer 1, initial setting values relating to functional blocks of the TV and the VCR are written. For example, an initial setting value is written for each of the items illustrated in the tables shown in FIGS. 2A and 2B. If different initial setting values are required for the same item depending on the area of use and the specifications of the device, the setting values are also written. In this manner, the ROM 12 stores the initial setting values corresponding to all cases.
[0020]
Then, the CPU 10 reads and writes necessary initial setting values from the ROM 12 to the EEPROM 13 which is a nonvolatile memory connected as an external memory. When the user changes the initial setting value, the changed setting value is written and stored. Since the set values written in the EEPROM 13 are retained even when the power of the entire device is turned off, when the power is supplied, the microcomputer 1 reads the set values from the EEPROM 13 and performs processing.
[0021]
When the initialization command is input to the microcomputer 1, the microcomputer 1 reads necessary initial setting values from the ROM 12 and rewrites the setting values in the EEPROM 13. For example, as shown in FIG. 3A, when the initial setting value is written in the ROM 12, and as shown in FIG. 3B, when the setting value is written in the EEPROM 13, the initialization processing is performed. Then, as shown in FIG. 3C, the set values in the EEPROM 13 are rewritten to the initial set values written in the ROM 12. Thus, the set value can be returned to the state at the time of factory shipment.
[0022]
The initialization command is received by the remote control receiving unit 18 by operating the remote control 17, for example, and is input to the microcomputer 1. A key for an initialization command may be set in the remote controller 17, or an initialization command signal may be transmitted when a specific combination key is operated simultaneously. The call may be transmitted by operating a specific key continuously for a predetermined time or longer, or may be transmitted only when the power is supplied. Further, the initialization command may be automatically transmitted after the microcomputer 1 or the microcomputer 2 returns from the reset state.
[0023]
In the ROM 22 of the microcomputer 2, similarly, initial setting values regarding functional blocks of the DVD are written. For example, an initial setting value is written for each of the items as exemplified in the table shown in FIG. As in the case of the ROM 12, initial setting values corresponding to all cases are stored. Then, the CPU 20 reads out the necessary initial setting values from the EEPROM 22 and stores them in the EEPROM 23, and when the user changes the setting values, the changed values are written into the EEPROM 23.
[0024]
As will be described later, when an initialization command for the functional blocks of the DVD is transmitted to the microcomputer 2, the microcomputer 2 reads the necessary initial setting values from the ROM 22, rewrites the setting values in the EEPROM 23, and resets the factory default settings. Return the set value to.
[0025]
Next, the initialization processing flow will be described with reference to FIG. The left side shows the processing flow in the TV and VCR functional blocks, and the right side shows the processing flow in the DVD functional block.
[0026]
First, the remote controller 17 is operated to transmit an initialization command, for example, at the time of factory shipment (S100). The initialization command is received by the remote control receiver 18 of the device body (S101), and the initialization command is input to the microcomputer 1 (S102). Then, the microcomputer 1 starts the initialization processing of the TV and VCR function blocks (S103), and reads necessary initial setting values from the ROM 12 in the microcomputer 1 (S104). The read initial setting value is written to the EEPROM 13 (S105), and initialization in the TV and VCR function blocks is performed based on the initial setting value (S106). When the initialization processing in the TV and VCR function blocks is completed (S107), it is checked whether there is another microcomputer that requires the initialization processing (S108). If there is, the initialization command of the corresponding microcomputer is transmitted. (S109). Whether or not the initialization processing is necessary is checked by, for example, whether or not an initialization end signal has been transmitted from another microcomputer.
[0027]
When the microcomputer 2 receives the initialization command when the initialization command of the microcomputer 2 is transmitted (S110), the microcomputer 2 starts the initialization process of the DVD functional block (S111). Then, necessary initial setting values are read from the ROM 22 in the microcomputer 2 (S112), and the read initial setting values are written to the EEPROM 23 (S113), and initialization in the DVD function block is performed based on the initial setting values. Processing is performed (S114). When the initialization process in the DVD functional block ends (S115), an initialization end signal is transmitted to the microcomputer 1 (S116). Upon receiving the initialization end signal (S117), the microcomputer 1 returns to S108 and checks whether there is another microcomputer that needs initialization processing. If there is no microcomputer that requires the initialization process, an end process is performed (S118).
[0028]
FIG. 5 shows another initialization processing flow. First, the remote controller 17 is operated to transmit an initialization command (S200). The initialization command is received by the remote control receiving unit 18 of the device main body (S201), and the initialization command is input to the microcomputer 1 (S202). Next, it is checked whether there is another microcomputer that needs initialization processing (S203), and if there is, an initialization command for the microcomputer is transmitted (S204). Whether or not the initialization process is necessary is checked based on whether or not an initialization end signal has been transmitted from another microcomputer, as in FIG.
[0029]
The initialization process when the initialization command of the microcomputer 2 is transmitted is the same as in FIG. When the microcomputer 2 receives the initialization command (S205), the microcomputer 2 starts initialization processing of the DVD functional block (S206). Then, necessary initial setting values are read from the ROM 22 in the microcomputer 2 (S207), and the read initial setting values are written to the EEPROM 23 (S208), and initialization in the DVD function block is performed based on the initial setting values. Processing is performed (S209). When the initialization process in the DVD functional block ends (S210), an initialization end signal is transmitted to the microcomputer 1 (S211).
[0030]
Upon receiving the initialization end signal (S212), the microcomputer 1 returns to S203 and checks whether there is another microcomputer that needs initialization processing. If there is no microcomputer requiring the initialization process, the initialization process of the TV and VCR function blocks is started (S213). The necessary initial setting values are read from the ROM 12 in the microcomputer 1 (S214), and the read initial setting values are written to the EEPROM 13 (S215). Then, initialization processing in the TV and VCR function blocks is performed according to the initial setting values (S216), and when the processing is completed, the termination processing is performed (S217).
[0031]
As a method of transmitting and receiving a signal related to initialization between the microcomputer 1 and the microcomputer 2, for example, there are a method using a terminal and a method using I2CBUS communication. 6, the terminal A of the microcomputer 1 is set as an initialization start signal output terminal, the terminal B of the microcomputer 2 is set as an initialization start signal input terminal, and the output of the terminal A is used. Rise from L to H, the microcomputer 2 starts the initialization process. Also, the terminal C of the microcomputer 2 is set as an initialization end signal output terminal, the terminal D of the microcomputer 1 is set as an initialization end input terminal, and the output of the terminal C rises from L to H to end the initialization. The microcomputer 1 receives the signal.
[0032]
As shown in FIG. 7, an initialization start signal and an initialization end signal are transmitted and received by using a CLOCK terminal and a DATA terminal of the I2CBUS set in the microcomputer 1 and the microcomputer 2. When transmitting an initialization start signal, the initialization start signal is transmitted from the DATA terminal of the microcomputer 1 in a communication format as shown in FIG. When transmitting an initialization end signal, an initialization end signal is transmitted from the DATA terminal of the microcomputer 2 in a communication format as shown in FIG.
[0033]
In the example described above, the initial setting values are written in the ROM of the microcomputer of each functional block. However, the initial setting values of all the functional blocks may be written in the ROM 12 of the microcomputer 1 as the main control unit. . In this case, when the initialization process is performed by another microcomputer, the necessary initialization value may be written from the ROM 12 into the EEPROM of the microcomputer to perform the initialization process. Since it is not necessary to write the initial setting value to another microcomputer, the memory capacity of the ROM of the other microcomputer can be saved, and the initial setting value can be centrally managed by the ROM of the main control unit.
[0034]
【The invention's effect】
As described above, according to the present invention, when the main control unit of the specific function block receives the initialization signal, the main control unit of the specific function block transmits the initialization signal of another function block. If performed once, the initialization processing of all functional blocks is performed. Further, since the initialization processing of each functional block is performed by each control unit, the processing load is not applied only to the main control unit.
[0035]
The main storage unit stores at least the initial setting value of the specific function block, and the sub control unit stores the initial setting value of the function block, thereby distributing the initial setting value. The memory capacity of each storage unit can be small, and the cost can be reduced accordingly.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of an entire block of an embodiment according to the present invention.
FIG. 2 is a table regarding initialization items according to the embodiment of the present invention.
FIG. 3 is a table regarding initial setting values at the time of initialization according to the embodiment of the present invention.
FIG. 4 is a processing flow of an embodiment according to the present invention.
FIG. 5 is another processing flow of the embodiment according to the present invention.
FIG. 6 is a diagram illustrating an example of transmission and reception between microcomputers according to the embodiment of the present invention.
FIG. 7 is an explanatory diagram relating to another example of transmission and reception between microcomputers according to the embodiment of the present invention.
FIG. 8 is an explanatory diagram relating to an example of a communication format for transmission and reception between microcomputers.
[Explanation of symbols]
1 microcomputer 10 CPU
11 RAM
12 ROM
13 EEPROM
14 Tuner 15 Video / audio signal processing unit 16 Monitor 17 Remote control 18 Remote control receiving unit 2 Microcomputer 20 CPU
21 RAM
22 ROM
23 EEPROM
24 optical disk 25 pickup 26 recording / reproducing unit 27 digital signal processing unit 30 video cassette 31 recording head 32 recording / reproducing unit

Claims (4)

A composite electronic device including a specific function block having a main storage unit and a main control unit and a function block having a sub storage unit and a sub control unit, wherein the main storage unit has at least an initial setting value of the specific function block. The main control unit reads the initial setting value from the main storage unit in response to an initialization signal to initialize the specific function block, and initializes the specific function block. Means for transmitting an initialization signal of another functional block to the sub-control unit after completion, the sub-storage unit stores an initial setting value of the functional block, and the sub-control unit Means for reading out the initial setting value from the sub-storage unit in response to an initialization signal of the function block transmitted from the main control unit and initializing the function block. Complex electronic equipment. A composite electronic device including a specific function block having a main storage unit and a main control unit and a function block having a sub storage unit and a sub control unit, wherein the main storage unit has at least an initial setting value of the specific function block. Wherein the main control unit transmits an initialization signal of another functional block to the sub-control unit in response to an initialization signal, and after the initialization of the other functional block ends, Means for reading out the initial setting value from the main storage unit and initializing the specific function block, the sub-storage unit stores the initial setting value of the function block, and the sub-control unit Means for reading out the initial setting value from the sub-storage unit in response to an initialization signal of the function block transmitted from the main control unit and initializing the function block. Electronic devices. The main storage unit stores an initial setting value of each function block, and the sub-storage unit stores an initial setting value of the function block read from the main storage unit. The composite electronic device according to claim 1. 4. The composite electronic device according to claim 1, wherein the main storage unit and the sub-storage unit store an initial setting value in a nonvolatile memory.

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