JP2002149430A - Method for updating program of digital broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that only one memory is used when program update is not performed in a conventional manner in a method for performing program update by doubly using memories for program storage. SOLUTION: When program update is not performed, a memory other than a memory in which a program which is being operated at present is stored is made available for the other purpose. Thus, it is possible to realize the valid use of the memory.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program updating method for a digital broadcast receiver having a function of updating a control program of the digital broadcast receiver.

[0002]

2. Description of the Related Art A conventional digital broadcast receiver program updating method has a dual program storage memory for safely updating a program when a program updating function is implemented. The memory is used only when updating a program, and is usually not used at all. This is an uneconomic technique in which a memory required for storing data for application programs and the like is separately prepared.

[0003]

SUMMARY OF THE INVENTION The present invention provides a method for safely updating a program by having a double memory for storing a program, in which a program which is currently running when a program is not updated is stored. The memory which is not the memory can be effectively used for other purposes, and it is not necessary to prepare a separate memory, and it is possible to safely update the program.

[0004]

In order to solve the above-mentioned problems, a digital broadcast receiver program updating method according to the present invention comprises an antenna for receiving a radio wave, a tuner for receiving a target radio wave, From the received digital broadcasting radio waves, a filter for selecting a target program or data, and data that has been selected by the filter, data determination means for determining whether the data for program update or other data and to select, An application data construction unit that connects the data determined by the data determination unit to the data used by the application program so that the data can be used from the application program; and an application for realizing functions such as a program guide and data broadcasting. Stores programs and data constructed by the application data construction means. And RAM2 of fit, and program construction means for constructing a program collects the determined data and the program update data in said data judgment means, and temporarily stores RAM1 programs constructed, the RA
CRC and C of program update data stored in M1
program checking means for calculating the check-sum, memory writing means for writing to a program storage memory stored in the RAM 1, memory switching means for exchanging address assignments of two memories, and storing a program. Memory 1 and memory 2 prepared for the purpose of being electrically rewritable and capable of holding written data even when power is not supplied, and memories storing programs to be started when the system is started up Is automatically selected to control the memory switching means, a non-volatile memory that stores the memory in which the program to be started is stored in the memory 1 or the memory 2, Startup memory checking means for checking whether the contents are legitimate programs, and a normal system A boot mode determining unit that determines whether the program is booted or booted for the purpose of updating a program and switches the boot mode; and a boot failure notifying unit that notifies a user when the program written in the memory cannot be booted due to an error. Memory that is the reverse of the memory in which the activated program is stored, for example, the activated program is stored in the memory 1
A program update method for a digital broadcast receiver, which enables the memory 2 to store data used by an application when it is stored in the memory 2, and further allows the program to be updated safely.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first invention of the present invention updates a receiver control program in a digital broadcast receiver program updating method incorporating means for updating a digital broadcast receiver program updating method control program. For the purpose of realizing functions safely, in the case of a configuration with double memory for storing programs, one memory that does not store programs can be used for other purposes except when updating the program. This is a method for updating a program of a digital broadcast receiver, and the memory can be used efficiently.

According to a second aspect of the present invention, there is provided an antenna for receiving a radio wave, a tuner for receiving a target radio wave, and a filter for selecting a target program or data from the received digital broadcast radio wave. Connecting data determined by the filter to determine whether it is data for program update or other data out of the data selected by the filter, and data determined to be used by the application program by the data determination means. An application data construction unit constructed to be used together from an application program, an application program for realizing functions such as a program guide and a data broadcast, and a device for storing data constructed by the application data construction unit. And the data determination means determines that the data is data for program update. A program construction means for collecting data to construct a program, a RAM 1 for temporarily storing the constructed program, a program inspection means for calculating a CRC and a Check-Sum of the program update data stored in the RAM 1, A memory writing unit for writing to a program storage memory stored in the RAM 1, a memory switching unit for exchanging address assignments of two memories, and an electrically rewritable prepared for storing a program; Automatically select memory 1 and memory 2 that can hold written data without power supply, and memory that stores programs to be started when the system is started, and control memory switching means And the memory in which the program to be started is stored Mori 1 or memory 2
Non-volatile memory, a boot memory checking means for checking whether the content of the program to be booted is a legitimate program, and whether to boot the system for the purpose of normal system startup or program update at boot time A boot mode determining unit that switches the boot mode, and a boot failure notifying unit that notifies a user when the program written in the memory cannot be started due to an abnormality, and a memory in which the started program is stored. Allows the reverse memory to be used for other purposes, for example to store data used by the application, and to allow the program to be updated safely.

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.

In FIG. 1, 1 is an antenna for receiving a radio wave, 2 is a tuner for receiving a target radio wave, 3
Is a filter for selecting a target program or data from the received digital broadcasting radio wave, and 4 is a data determining means for determining whether the data selected by the filter is data for program update or other data and selecting the data. Reference numeral 5 denotes an application data construction unit that connects the data determined by the data determination unit to data used by the application program and constructs the data so as to be usable from the application program, and 6 realizes functions such as a program guide and data broadcasting. An application program 7 for storing data constructed by the application data construction means, and a RAM 2 and 8 for constructing a program by collecting data determined as program update data by the data determination means. Construction means, 9 temporarily stores the constructed program RAMs 1 and 10 are memory writing means for writing to a program storage memory stored in the RAM 1, 11 is a memory switching means for exchanging addresses of two memories, and 12 is prepared for storing a program. It is a memory that is electrically rewritable and can hold written data without power supply, and is, for example, a FlashROM.

Reference numeral 13 denotes a memory similar to the memory of the above-mentioned 12;
14 automatically selects a memory in which a program to be started up is stored when the system is started up, and starts up determining means for controlling the memory switching means. 15 checks whether or not the content of the program to be started is a legitimate program. Memory test means 16 is a non-volatile memory holding a memory storing a program to be started, either a memory 1 or a memory 2, for example, an EEPROM.

Reference numeral 17 denotes a program checking means for calculating CRC and Check-Sum of the program update data stored in the RAM 1; and 18, at the time of startup, judges whether the system is to be started up normally or for the purpose of updating the program. The start mode determining means 19 for switching the mode is a start failure notifying means for notifying the user when the program written in the memory is abnormal and cannot be started.

[0011] From the radio wave received by the tuner, necessary data is sent to the data judging means by the filter. The data determination means determines whether the data sent from the filter is data for program update or not. The data determined by the data determination means as data for updating the program is collected by the program construction means and constructed into an operable program. The constructed update program is temporarily stored in the RAM 1 and CRC or Chech-Sum or other calculations are performed by the program checking means.

The result of the calculation is written in a non-volatile memory, and is used by the boot memory checking means when the system is booted. When the program check is completed, the program checking means notifies the memory writing means, and the memory writing means reads the program from the RAM 1. The memory switching means writes from the activation determination means to the memory opposite to the memory in which the currently activated program is stored. When the writing of all the programs is completed, the memory writing means writes in the non-volatile memory which memory is the memory in which the program to be started next time is written.

The data judged by the data judging means to be not program update data is sent to the application data constructing means, constructed in a form usable by the application, and stored in the RAM 2. The application reads out data that should be kept even when the power is turned off, for example, data of a program guide, from the RAM 2 as needed, and passes it to the memory writing means. The memory writing means writes data in the direction opposite to the memory in which the currently running program is stored.

At the time of system startup, the boot determination means reads from the non-volatile memory which memory contains the program to be started and notifies the memory switching means, and the memory storing the program to be started executes the program execution. Maps to an address that does not hinder. When the switching of the memory is completed, the startup memory inspection means first reads the contents of the memory in which the program to be started is stored, and executes the CRC or Check.
-Calculation is performed by Sum or another method, and the result is compared with the calculation result of the program checking means stored in the nonvolatile memory.

If the calculation results match, it is determined that normal startup is possible, and the system is started based on a normal startup sequence. If the calculation results do not match,
Check the opposite memory. If the calculation results match, the data is changed so that the program starts from the memory in which the correct program to be started is stored in the nonvolatile memory, and the memory switching means is notified.

If it is determined that neither the memory 1 nor the memory 2 contains a correct program, a notice is sent to the start failure notifying means and the user is notified that the start has failed.

There are two types of activation, a program update mode and a normal mode, which are determined by the activation mode determination means. In the case of the program update mode, the data determination means
Discarding the application data or keeping the application program itself running prevents writing of the program update data and writing of the data used by the application to the same memory at the same time.

In FIG. 2, reference numeral 11 denotes the memory switching means, which can exchange addresses of two memories. Reference numerals 12 and 13 denote the memories 1 and 2 which are electrically rewritable memories provided for the purpose of storing programs and capable of holding written data without power supply. For example Fl
ashMemory.

When a program for controlling the digital broadcast receiver is recorded in the memory 1, the memory 1 is located at, for example, Address 0x00000000 to 0x3fffffff. At this time, the memory 2 is arranged at Address 0x40000000 to 0x7fffffff, and data can be written or read using this address.

Next, when the memory is switched through the memory switching means, the memory 1 becomes, for example, Address 0x40000000 to 0x
7fffffff, the memory 2 is located at Address 0x00000000 to 3fffffff.

When updating the receiver control program, for example, assuming that the current receiver control program is stored in the memory 1 and is operating, if the received new receiver control program is written from Address 0x40000000, it is stored in the memory 1. 2 will be written. When the memory is switched using the memory switching means after the writing is completed,
This time, Memory 2 becomes Address 0x00000000 and Memory 1
Becomes Address 0x40000000, so that the new receiver control program written in the memory 2 operates. Memory 1
Since the old receiver control program written in the file is unnecessary, the application program can be used for data storage.

When a new receiver control program is to be updated in this state, the received receiver control program can be written to the memory 1 by writing the received receiver control program to Address 0x40000000.

As described above, when updating the receiver control program, it does not matter which memory is to be written, and when updating the receiver control program, the memory opposite to the memory in which the program is written is used. Other than the above, application programs and the like can be used for purposes such as data storage.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to FIG.

In FIG. 3, 1 is an antenna for receiving a radio wave, 2 is a tuner for receiving a target radio wave, 3
Is a filter for selecting a target program or data from the received digital broadcasting radio wave, and 4 is a data determining means for determining whether the data selected by the filter is data for program update or other data and selecting the data. Reference numeral 5 denotes an application data construction unit that connects the data determined by the data determination unit to data used by the application program and constructs the data so as to be usable from the application program, and 6 realizes functions such as a program guide and data broadcasting. An application program 7 for storing data constructed by the application data construction means, and a RAM 2 and 8 for constructing a program by collecting data determined as program update data by the data determination means. Construction means, 9 temporarily stores the constructed program RAMs 1 and 10 are memory writing means for writing to a program storage memory stored in the RAM 1, 11 is a memory switching means for exchanging addresses of two memories, and 12 is prepared for storing a program. It is a memory that is electrically rewritable and can hold written data without power supply, and is, for example, a FlashROM.

13 is a memory similar to the memory of the above 12;
14 automatically selects a memory in which a program to be started up is stored when the system is started up, and starts up determining means for controlling the memory switching means. 15 checks whether or not the content of the program to be started is a legitimate program. Memory test means 16 is a non-volatile memory holding a memory storing a program to be started, either a memory 1 or a memory 2, for example, an EEPROM.

Reference numeral 17 denotes program checking means for calculating the CRC and Check-Sum of the program update data stored in the RAM 1. At startup, 18 determines whether it is a normal system startup or a startup for program update purposes. Start mode determining means for switching modes, 19 is a start failure notifying means for notifying a user when a program written in a memory is abnormal and cannot be started, and 20 is a receiving means for recording information for uniquely identifying all receivers. A device identifier storage means 21 is a communication means for transmitting and receiving the update status of the receiver control program and the update result through a telephone line or the like, and a communication means 22 for receiving information sent from the receiver and managing the information. It is a center.

When the receiver updates the receiver control program, the receiver identifier obtained by sequentially extracting information such as the operation progress, the version number of the receiver control program, and the success or failure of the update from the receiver identifier storage means. To the communication means. The communication means transmits the information to the center via a telephone line or the like. The center manages this information for each receiver identifier, so that the user can know the update status of the receiver control program performed by the user, the result, and in the unlikely event that the update of the receiver control program fails, the It is possible to give appropriate advice to the user.

Also, the version number of the receiver control program operating on the digital broadcast compatible receiver on the market is managed, and, for example, a version of the receiver control program having a malfunction in the receiver operation is operating. It is possible to provide appropriate advice and support to the user using the receiver.

(Embodiment 3) Hereinafter, a second embodiment of the present invention will be described with reference to FIG. In FIG. 4, 1 is an antenna for receiving a radio wave, 2 is a tuner for receiving a target radio wave, 3 is a filter for selecting a target program or data from the received digital broadcast radio wave,
4 is data determination means for determining whether data for program update or other data is selected from the data selected by the filter, and 5 is data determined by the data determination means to be data used by an application program. , An application data construction means for constructing the application data to be used from an application program; 6, an application program for realizing functions such as a program guide and data broadcasting; 7, data constructed by the application data construction means. RAMs 2 and 8 for storing the data determined by the data determination means as the data for program update and program construction means for constructing the program, and 9 RAM for temporarily storing the constructed program.
AM1 and 10 are memory writing means for writing to a program storage memory stored in the RAM1, and 11 is 2
A memory switching means for changing the address assignment of a certain memory; a memory which is provided for storing a program and which is electrically rewritable and capable of holding written data without power supply; For example, FlashROM.

13 is a memory similar to the memory of the above 12;
14 automatically selects a memory in which a program to be started up is stored when the system is started up, and starts up determining means for controlling the memory switching means. 15 checks whether or not the content of the program to be started is a legitimate program. Memory test means 16 is a non-volatile memory holding a memory storing a program to be started, either a memory 1 or a memory 2, for example, an EEPROM.

17 is a program checking means for calculating the CRC and Check-Sum of the program update data stored in the RAM 1, and 18 is a boot-up program which determines whether it is a normal system boot-up or a boot-up for program updating. Start mode determining means for switching modes, 19 is a start failure notifying means for notifying a user when a program written in a memory is abnormal and cannot be started, and 20 is a receiving means for recording information for uniquely identifying all receivers. A device identifier storage means 21 is a communication means for transmitting and receiving the update status of the receiver control program and the update result through a telephone line or the like, and a communication means 22 for receiving information sent from the receiver and managing the information. The center 23 is a generally used non-volatile memory such as an SD card or a multimedia card. Ricardo, 24 is a nonvolatile memory card reading means having an ability to read and write to the nonvolatile memory card.

In the first embodiment, when the update of the receiver control program is not executed in the memory in which the receiver control program is not recorded, for example, the application program writes data such as a program table, If the receiver control program is updated from that state, the stored information is discarded, and it is necessary to newly receive and store after updating the receiver control program.

Therefore, a non-volatile memory card which is widely commercially available and means for reading / writing from / to the memory card are prepared. When updating the receiver control program, first, for example, data stored by an application program or the like is stored. The data is copied to the nonvolatile memory card using the nonvolatile memory card reading / writing means.

Thereafter, the receiver control program is updated, and after the update is over, the data previously written from the nonvolatile memory card is again overwritten on the memory in which the receiver control program before the update is recorded.
At this time, since the addresses of the memory 1 and the memory 2 have been switched by the memory switching means as described in the first embodiment, there is no need to instruct which memory to write. Good.

In this way, even when the receiver control program is updated, it is possible to safely update the receiver control program without discarding the data accumulated by the application program and the like. .

[0037]

As described above, according to the digital broadcast receiver program updating method of the present invention, an antenna for receiving a radio wave, a tuner for receiving a target radio wave, and a received digital broadcast radio wave are provided. A filter for selecting a target program or data, a data determination unit for determining whether the data selected by the filter is data for program update or other data and selecting the data, and an application for the data determination unit. An application data construction means for connecting data determined to be used by the program and constructing the data to be usable from the application program; an application program for realizing functions such as a program guide and data broadcasting; A RAM 2 for storing data constructed by the data construction means, A program construction means for collecting data determined as program update data by the data determination means to construct a program, a RAM 1 for temporarily storing the constructed program, and a CRC of the program update data stored in the RAM 1 Checking means for calculating the memory and Check-Sum, memory writing means for writing to a program storage memory stored in the RAM 1, memory switching means for exchanging addresses of two memories, and storing a program. 1 and 2 which are electrically rewritable and can hold written data even without power supply, and a program to be started when the system is started. A start determination unit for automatically selecting a memory and controlling a memory switching unit; Memory or memory 1 program to be started is stored the memory 2
Non-volatile memory, a boot memory checking means for checking whether the content of the program to be booted is a legitimate program, and whether to boot the system for the purpose of normal system startup or program update at boot time And a boot failure notifying unit that informs the user when the program written in the memory cannot be started due to an abnormality, so that, for example, some trouble may occur during the update of the program. Even if the power is turned off, the power supply is normally started, and after the power supply is started, the memory prepared for updating the program can be used for purposes other than updating the program, such as an application.

Further, by providing communication means for exchanging information with the center via a telephone line or the like, the status of the program being updated by the user, the result of the update, and the like can be fed back to the maker side, and received. In the event of a failure to update the device control program, or when continuing to use a faulty receiver control program, it is possible to provide appropriate advice to those users and receive digital broadcasts safely and comfortably. It will be possible to have you use the machine.

Further, by having a removable non-volatile memory card and a means for reading and writing from and to the non-volatile memory card, data accumulated by an application program or the like can be discarded even when the receiver control program is updated. Therefore, it is possible to safely update the receiver control program.

[Brief description of the drawings]

FIG. 1 is a block diagram of a program update method of a digital broadcast receiver according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a memory switching method of the digital broadcast receiver according to the first embodiment of the present invention.

FIG. 3 is a block diagram of a method for updating a program of a digital broadcast receiver according to a second embodiment of the present invention.

FIG. 4 is a block diagram of a method for updating a program in a digital broadcast receiver according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Tuner 3 Filter 4 Data judgment means 5 Application data construction means 6 Application 7 RAM2 8 Program construction means 9 RAM1 10 Memory writing means 11 Memory rewriting means 12 Memory 1 13 Memory 2 14 Activation judgment means 15 Startup memory inspection Means 16 Non-volatile memory 17 Program check means 18 Start-up mode determination means 19 Start-up failure notification means 20 Receiver identifier storage means 21 Communication means 22 Center 23 Non-volatile memory card 24 Non-volatile memory card read / write means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04B 1/16 G06F 9/06 610Q 5K061 H04N 5/44 640H 7/08 H04N 7/08 Z 7/081 F Term (reference) 5B018 GA04 HA03 MA01 QA20 5B076 AC03 BA01 BA03 BB04 BB06 CA06 5B082 DE06 5C025 AA21 AA25 BA25 BA27 BA30 DA01 DA05 5C063 AA01 AB03 AB07 AC01 AC10 CA23 CA29 CA34 CA36 DA03 DA07 DA13 EB1 EB50 CB50 BB50

Claims (6)

[Claims] 1. A digital broadcast compatible receiver incorporating means for updating a digital broadcast compatible receiver control program, in order to safely realize a function of updating the receiver control program, a memory for storing the program is duplicated. A method for updating a program in a digital broadcast receiver which enables one of the memories that does not store a program to be used for purposes other than updating the program except when updating the program. 2. An antenna for receiving a radio wave, a tuner for receiving a target radio wave, a filter for selecting a target program or data from a received digital broadcast radio wave, and a filter selected by the filter. Among the data, data determining means for determining and selecting data for program update or other data, and the data determined by the data determining means to be used by the application program can be used by the application program. Data construction means constructed as described above, an application program for realizing functions such as a program guide and data broadcasting, a RAM 2 for storing data constructed by the application data construction means, and the data judgment Means to collect data determined to be program update data Program construction means for constructing a RAM, and a RAM 1 for temporarily storing the constructed program
A program checking means for calculating CRC and Check-Sum of the program update data stored in the RAM 1; a memory writing means for writing to the program storage memory stored in the RAM 1; Memory switching means for exchanging the address assignment of the memory, and memories 1 and 2 which are electrically rewritable and are provided for storing a program, and which can hold written data without power supply. At the time of system startup, a memory storing a program to be started is automatically selected, and a boot determination means for controlling a memory switching means; and whether the memory storing the program to be started is memory 1 or memory 2 And the contents of the program to be started are legitimate programs Startup memory checker for checking the program, bootup mode determiner that switches between bootup modes by determining whether to start up the system normally or at the time of program update at bootup, and a program written in the memory starts up abnormally A start failure notifying means for notifying the user when the program cannot be executed, and a memory opposite to the memory storing the started program, for example, when the started program is stored in the memory 1, the memory 2 is used for another purpose. For example, a method for updating a program of a digital passive receiver, which can store data used by an application and can safely update the program. 3. A digital broadcast-compatible receiver incorporating means for updating a digital broadcast-compatible receiver control program, when the receiver control program is updated, the update state of the program is determined by a telephone line connected to the receiver. A digital broadcast receiver program updating method for notifying a download result accumulation center of a digital broadcast receiver through the program so that the manufacturer can check the state of the receiver of the user. 4. A digital system according to claim 2, further comprising communication means for exchanging information with a center via a telephone line or the like, wherein a state of a program being updated by a user can be fed back to a manufacturer. How to update the broadcast receiver program. 5. A program updating method for a digital broadcast receiver according to claim 4, wherein a result of a download performed by a user can be fed back to a maker. 6. In addition to the above-mentioned claim 2, by having a removable nonvolatile memory card and a means for reading / writing from / to the nonvolatile memory card, for example, when the control program is not updated, for example, the application program is executed by the receiver control program. Even if the data stored in the unrecorded memory is temporarily backed up to a non-volatile memory card, the receiver control program is updated, and then the backed up data is written back, the application program can be updated even if the receiver control program is updated. A method for updating a program of a digital broadcast receiver, which makes it possible to guarantee stored data.