JPH07135491A - Data writer - Google Patents

Abstract

PURPOSE:To limit the number of times of data recorded on a recording medium from being recorded on other recording medium. CONSTITUTION:When a timer circuit 104 counts a time of 00-hour 00-minute, a maximum value NMAX is set to a variable N stored in a RAM 103. Data stored in a recording medium 106 are transferred to a memory card 108 and stored therein, then the variable N stored in the RAM 103 is decremented by one every time transfer is made once. When the variable N reaches 0, the transfer from the recording medium 106 to the memory card 108 is inhibited.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to, for example, newspapers, magazines,
Books, etc. are delivered or sold daily or regularly,
The present invention relates to a data writing device suitable for electronically distributing information centering on text (characters) using a satellite.

[0002]

2. Description of the Related Art Information on newspapers, magazines, books, etc. is often distributed in the state of being printed on paper. Further, in recent years, with the progress of data communication technology using public telephone networks, it has become possible to distribute such information by electronic means. For example, an online service is widely used in which a personal computer is used to access a database such as a newspaper via a public telephone network to retrieve necessary information.

In addition, a service of contracting with a service center in advance and having article information of a desired newspaper or magazine delivered by fax has already been put into practical use.

However, the distribution of information on paper has the following problems. (1) Not so much when reading one newspaper or one magazine, but when reading multiple newspapers or magazines, the amount is very bulky and inconvenient. (2) It is inconvenient for a family to subscribe to a newspaper, even if the number of family members is large, only one person can read it at the same time. (3) Since a large amount of paper is consumed, the consumption of wood and pulp increases. (4) It is necessary to secure a delivery member for transportation and delivery, which increases transportation costs. (5) Since automobiles, motorcycles, etc. are used for transportation and delivery and generate exhaust gas, there is a risk of environmental damage.

In addition, the distribution of information by an electronic method is
Since the access fee for accessing the center database is high and the communication cost is required, the cost is very high, and it is not easily available to the general public.

Furthermore, the method of sending by fax requires a lot of manual labor to select desired article information for each contractor at the service center, so that the information charge is also very high. It was not easy for the general public to use.

Therefore, the applicant of the present invention, via the communication satellite,
It was previously proposed that data of newspapers, magazines, books, etc. be transmitted to a contractor who has made a predetermined contract in advance.

[0008]

However, in the above proposal, the transmitted data may be copied and distributed to a person other than the contractor.

The present invention has been made in view of such a situation, and reduces the risk that the distributed data will be distributed to a person other than the contractor.

[0010]

A data writing device of the present invention is a time storing means for performing time counting operation with a first storage means for storing data (for example, recording medium 106 in FIG. 16) and outputting time information. (For example, the timer circuit 104 in FIG. 16),
The second storage means (for example, the memory card 10 in FIG. 16) to which the data read from the first storage means is transferred and stored.
8), a third storage unit (for example, RAM 103 in FIG. 16) that stores the number of times of data transfer from the first storage unit to the second storage unit, time information output from the time counting unit, and a third storage unit. A control means (for example, the CPU 100 in FIG. 16) for controlling the transfer of data from the first storage means to the second storage means is provided corresponding to the number of transfers stored in the storage means. .

This data writing device has a judgment means (for example, FIG. 2) for judging the continuity of the time information output by the time measuring means.
0 in the program step S31 to S37) is further provided, and when the transfer is within the range of the number of transfers stored in the third storage means, the determination means continuously outputs the time information. When it is determined that
It is possible to allow the transfer of data from the first storage means to the second storage means.

Further, a determining means (for example, steps S51 to S60 on the program of FIG. 21) for determining the interval of the time information output by the time measuring means is further provided, and the control means is
When the transfer is within the range of the number of transfers stored in the third storage means, when the determination means determines that the time information interval is larger than a predetermined reference value, the first
It is possible to allow the transfer of data from the storage means of the above to the second storage means.

Alternatively, a judgment means (for example, steps S81 to S90 in the program of FIG. 22) for judging the continuity and the interval of the time information output by the time measurement means is further provided, and the transfer is given to the control means by the third. When the determination means determines that the time information is continuous and the interval is larger than a predetermined reference value within the range of the number of transfers stored in the storage means, the first storage It is possible to allow the transfer of data from the means to the second storage means.

The above data may include article data.

[0015]

In the data writing device having the above construction, when the timer circuit 104 measures, for example, midnight, RA
The number of transfers stored in M103 is set to the maximum value. As a result, the user is allowed to transfer the data from the recording medium 106 to the memory card 108 within the set number of times. Since the maximum number of transfers stored in the RAM 103 is set according to the time information measured by the timer circuit 104, it is possible to reliably prevent the data from being copied more than the stored number of times.

[0016]

1 shows an example of the configuration of a data broadcasting system to which the data writing device of the present invention is applied. A newspaper company as an information provider has a large-scale computer 1. A paper space database is stored in the large-scale computer 1. This paper surface database includes article information for printing on newspapers, layout information, and the like. The data in this database is transmitted to the workstation 2 and edited there as required.

That is, article data is edited for each page (genre) so that the receiving side can easily retrieve it. For example, this editing creates a screen for search in which the layout is unchanged and only the headline is visible and the paper surface is reduced as it is. Furthermore, the search screen (headline) is associated with the article describing the details so that the article corresponding to the headline can be displayed. In this way, the data edited in a form that can be easily searched by the receiving side is transmitted to the broadcasting center (broadcasting station) 3 via the data line on the ground.

The broadcasting center 3 has a transmitting device as shown in FIG. 2, for example. That is, the data transmitted from the newspaper publisher is newspaper data, scramble key, common information,
It is made up of data such as the receiving device ID and contract contents. Of these, the newspaper data is the data scrambler 1
4 and is scrambled corresponding to the pseudo random sequence output from the PN (pseudonoise) generator 13 and output to the independent data channel multiplexing circuit 12. The pseudo-random sequence generated by the PN generator 13 is
It is set according to the scramble key supplied by the newspaper company.

In addition to the scramble key, the common information, the receiver ID and the contract content are supplied to the encryption circuit 11 and encrypted. The encrypted data is supplied to the independent data channel multiplexing circuit 12 as related information.

The independent data channel multiplexing circuit 12 is
The scrambled newspaper data supplied from the data scrambler 14 and the related information supplied from the encryption circuit 11 are multiplexed and output to the digital channel signal multiplexing circuit 15.

The above configuration constitutes an encoder 25 for generating data in an independent data channel, which will be described later with reference to FIG.

Digital channel signal multiplexing circuit 15
In addition, an audio signal transmitted as a digital channel signal, which will be described later with reference to FIG. 3, (at least a part of which is an audio signal accompanying a video signal described later).
Is entered. Digital channel signal multiplexing circuit 1
5 is an input audio signal (digital audio signal),
The data supplied from the encoder 25 is multiplexed and 4
The phase DPSK modulator 16 is supplied.

The 4-phase DPSK modulator 16 performs 4-phase DPSK modulation on the input data and outputs it to the video signal / digital channel signal multiplexing circuit 17. This video signal /
A video signal to be broadcast at the broadcast center 3 is also input to the digital channel signal multiplexing circuit 17. The audio signal input to the digital channel signal multiplexing circuit 15 is a digital signal, whereas the video signal input to the video signal / digital channel signal multiplexing circuit 17 is an analog signal.

The video signal / digital channel signal multiplexing circuit 17 frequency-multiplexes the input video signal and the signal supplied from the 4-phase DPSK modulator 16, and FM
Output to the modulator 18. The FM modulator 18 FM-modulates a predetermined carrier with the input signal and outputs it to the up converter 19. The up converter 19 frequency-converts the frequency of the input FM signal into a frequency on the order of gigahertz. FM output from the up converter 19
The signal is power-amplified by the power amplifier 20 and then supplied to the transmitting antenna 21 and is then transmitted to the satellite (broadcast satellite or communication satellite) 4 (FIG. 1).

FIG. 3 shows the frequency spectrum of the signal input to the FM modulator 18. As shown in the figure, the video signal has a frequency band up to about 4.5 MHz, and the signal output from the 4-phase DPSK modulator 16 is a signal having a frequency of 5.727272 MHz as a subcarrier. ing. That is, the video signal and the 4-phase DPSK signal are frequency-multiplexed and transmitted.

FIG. 4 shows the format (format in the A mode) of digital channel data which is 4-phase DPSK modulated. As shown in the figure, horizontal 6
One frame of data is composed of 2048-bit data of 4 bits and 32 bits in the vertical direction. A frame synchronization signal, a control signal, and a range bit signal are recorded in the first 2 bits × 32 bits range.

Since one frame of data is transmitted in 1 ms, the transmission rate is 2.048 Mbps.

The frame synchronization signal is a signal for synchronizing each frame. The control signal has 16 bits as a unit, and as shown in Table 1, the first 1 bit indicates which mode is the A mode or the B mode. The B mode will be described later. The following second and third bits indicate whether the television audio signal (audio signal accompanying the video signal) is a stereo signal, a monaural 1-channel signal, or a monaural 2-channel signal. It is done like this.

The fourth bit and the fifth bit are a monaural 1-channel audio signal, a stereo 1-channel audio signal, a monaural 1-channel audio signal, or an additional signal added in addition to television audio. Or a signal other than voice.
Bits 6 to 15 are extension bits for future use. The 16th bit is a code for indicating whether or not the audio output is suppressed.

[0030]

[Table 1]

Table 2 shows the first to fifth bits and the first bit.
It shows the more detailed contents of 6 bits. That is, when the first bit is 0, it means that the mode is A.
, The mode is B. When the second bit is 0 and the third bit is 0, the television audio signal is stereo, and when the second bit is 0 and the third bit is 1, the television audio signal is It represents that it is a monaural 2 channel signal (recorded in audio 1 and audio 2 in the format of FIG. 4). When the second bit is 1 and the third bit is 0, it means that the television audio signal is a monaural 1-channel signal (recorded in audio 1). The state where both the second bit and the third bit are 1 is not particularly used.

When the fourth bit is 0 and the fifth bit is 0, it means that the additional voice is stereo. When the fourth bit is 0 and the fifth bit is 1, the additional voice is added. It indicates that the sound is a monaural 2-channel signal (recorded in the sounds 3 and 4). Further, when the fourth bit is 1 and the fifth bit is 0, it indicates that the additional voice is a monaural 1-channel signal (recorded in the voice 3). When both the 4th bit and the 5th bit are 1, it indicates that a signal other than voice is transmitted.

Further, the 16th bit is set to 1 when the voice output is suppressed and is set to 0 when the suppression is released.

[0034]

[Table 2]

As shown in FIG. 4, in the first 2 × 32 bit range, the next 10 × 32 bit range, and the subsequent 3 × 10 × 32 range, the audio data of audio 1 to audio 4 respectively. Is recorded. 1
32 samples of audio data are arranged in each range of 0 × 32 bits. That is, the number of bits per sample is 1.
It is set to 0 bit. However, the analog audio signal is converted into 14-bit digital data per sample. Of these, the upper 10 bits of the significant digit are selected and transmitted as one sample of data. That is,
As shown in FIG. 5, the upper 10-bit data of the significant digit of the 14-bit data is selected, and therefore there are five ranges to be selected. The range bits recorded in the first range of 2 × 32 bits indicate which of the five ranges is 10 bits.

In the A mode, the audio data of one channel is arranged in this 10 × 32 bit range, but in the B mode, 20 × 3.
Audio data for one channel is arranged in a 2-bit range. That is, in the B mode, higher quality audio data can be transmitted.

The data of the independent data channel is arranged in the range of 15 × 32 bits next to the data of the voice 4, and the error correction code (C1) in the lateral direction is arranged in the last range of 7 × 32 bits. Are arranged.

The data of the independent data channel shown in FIG. 4 is transmitted in units of packets. FIG. 6 shows the format of this packet. As shown in the figure, one packet is composed of 288 bits, and the first 16 bits are used as a header, followed by 19 bits.
Substantial data is arranged in 0 bit, and the error correction code (C1) of the packet is arranged in the last 82 bits.
Of the 16-bit header, the first 5 bits are the service identification code, and the remaining 11 bits are the horizontal error correction code (check bit) (C1) of the service identification code.
It is said that As will be described later with reference to FIG. 11, the service identification code includes a code for identifying related information and newspaper data.

The service identification code of the header 16 is as follows:
Since 5 bits are prepared, 32 kinds of services can be logically identified. However,
As shown in FIG. 7, when all of the 5 bits are 0, the identification code is used when there is no data to be sent as a dummy packet. Therefore, in practice, 31 types of services can be identified by the remaining 31 types of identification codes.

The data for one frame shown in FIG. 4 is collected for nine frames, as shown in FIG. 8, thereby forming a super frame. The bit string of one packet is
It consists of 1 superframe of data.

As shown in the figure, in each frame, the data is sequentially transmitted in the vertical direction. Therefore, the burst error occurs in the vertical direction in FIG. Therefore, in order to strengthen against this burst error, the independent data channels in the range of 15 × 32 bits are multiplexed in the diagonal direction. As shown in FIG. 8, since the horizontal length of the independent data channel is 15 bits, there are 15 diagonal directions. The 288-bit packet shown in FIG. 6 corresponds to each of these directions. Therefore, the independent data channel
There are 15 positions of packets (15 channel packets). By thus multiplexing in the diagonal direction, the data forming each packet can be interleaved, and the burst error is strengthened.

FIG. 9 schematically shows the structure of a packet in the independent data channel. As shown in the figure, the relevant information output from the encryption circuit 11 shown in FIG. 2 is assigned to one of the 15 packets. Then, for example, newspaper data (newspaper data output from the data scrambler 14) of the newspaper companies A to I can be allocated to the remaining 14 packets. However, one newspaper company can use a plurality of packets at the same time. In the embodiment shown in FIG. 9, one packet is used as the related information, and the newspaper article data of the newspaper publishers A, B, and C is
Two packets are assigned to each.

FIG. 10 schematically shows the data for each of the 15 packet positions. As shown in the figure, in this embodiment, the related information is assigned to the first packet, and the data of newspaper publisher A to newspaper publisher I are assigned to the second to fifteenth packets, respectively. There is. That is, the related information and the newspaper data A to I are simultaneously transmitted to each home.

FIG. 11 shows a more detailed format of the packet. As shown in the figure, in the packet of 288 bits, the first 16 bits are used as a header, and identification data (service identification data in FIG. 6) such as related information and newspaper data is placed therein. Related information or newspaper data is arranged in 190 bits following the header, and an error correction code is arranged in the last 82 bits.

There are two types of related information, common information and individual information. Is the common information at the beginning of the common information,
A type identification code for identifying whether the information is individual information is assigned. Next, newspapers A, B, C, ...
A newspaper data identifier for identifying which of the newspaper data is assigned is assigned. Further, the data of the packet position to be used is arranged at the position following it. That is, the code indicating which of the positions 1 to 15 the packet data is assigned to is assigned here.

Further, a scramble key is assigned next. This scramble key is received by the data receiving device 6 described later, and the data scrambled by the data scrambler 14 of FIG.
Can be descrambled.

Next to the scramble key, a broadcast start time and a broadcast end time are further assigned. Next to the broadcast end time, other necessary codes can be assigned.

On the other hand, the type identification code is assigned to the head of the individual information, and the receiving device ID is assigned next to it. This receiving device ID is assigned to each data receiving device 6 of FIG. 1 placed in each home, for example. Next to this receiving device ID, the contract content of the contractor having this receiving device ID is assigned. Hereinafter, the receiving device ID and the contract content corresponding thereto are sequentially assigned.

As shown in FIG. 10, since the related information assigned to the first packet is always transmitted, the receiving side monitors this related information to detect the scramble key of a predetermined newspaper company or the like. , The broadcast start time and end time can be detected. Further, when the data receiving device having the receiving device ID included in the individually transmitted information during the predetermined period in which the common information is not transmitted matches the contract content, the newspaper data of the predetermined newspaper company is downloaded. It becomes possible to do.

On the other hand, newspaper data is divided into search page data and article page data. A start code is assigned to the data on the search page at the beginning (search page a). This start code is for example newspaper A
It means that the newspaper data of is started from here. Next to the start code, a newspaper data identifier is arranged. This newspaper data identifier is the newspaper publisher A,
It is a code for identifying which of B, C, ... Next to this newspaper data identifier, a type identification code for identifying the search page and the article page is assigned. And next,
Paper identification data is assigned. This paper surface identification data identifies paper surfaces (genres) such as political surface, economic surface, and sports surface.

The headline sentence is arranged next to the page identification data, and then the character size and font of the headline sentence and further the position data thereof are arranged.
Further, next to the position data, layout data indicating whether the headline text is vertically written or horizontally written is arranged. Further, next to that, a pointer for locating a position where a detailed article corresponding to the headline is described is arranged.

The above-mentioned search page a is the format of the first packet, but the second and subsequent packets may have the format shown on the search page b. That is, in this packet, the start code and the newspaper data identifier are omitted.

On the other hand, in the article page of the newspaper data, the type identification data is arranged at the head thereof, and the layout is arranged next to it (article page a). The layout is followed by an outline, and subsequently, article data representing detailed content of the article is arranged. When the outline or article data is long and cannot be accommodated in one packet, the packet shown on the article page b is added as necessary after the article page a described above. Then, an end code is added to the end position of the article data.

FIG. 12 schematically shows the search page and the article page. The search page is, as shown in FIG.
Only the headline is displayed. On the contrary,
As shown in FIG. 7B, the article page is displayed so that not only the headline but also the outline and further detailed article can be seen. When the contractor selects a predetermined headline on the search page by clicking, for example, with a mouse, the contractor selects the headline and the outline and article corresponding to the headline are displayed as shown in FIG. 12 (b). It is designed to be.

FIG. 13 shows the overall arrangement of each packet on the search page and article page. As shown in the figure, a search page packet is arranged prior to the article page packet, and each search page packet has a pointer for enabling access to the corresponding article page. It is arranged.

The above data is transmitted from the broadcasting center 3 in FIG. 1 to the satellite 4, and further transmitted from the satellite 4 to, for example, the receiver (contractor) in each home. In each home, the signal received by the outdoor device 5 is
It is converted into a predetermined intermediate frequency signal (IF signal). This I
The F signal is input to the data receiving device 6. The data received by the data receiving device 6 is demodulated there, supplied to the recording device 7, and recorded on a recording medium such as a Minidisc (trademark) 8. The user attaches this mini disk 8 to, for example, the portable terminal device 9,
The received data can be searched from the search page and the required article page can be displayed. Alternatively, the recording device 7
It is possible to read out the data recorded in, output to the television receiver 10 and display it if necessary.

FIG. 14 shows a configuration example of the data receiving device 6. As shown in the figure, the IF signal input from the outdoor device 5 is supplied to the BS tuner 32. The user sets in advance the broadcast time of the newspaper data contracted to the timer circuit 34. The timer circuit 34 has a built-in clock, and when the set time arrives, C
The signal is output to the processing circuit 35 including a PU, a ROM, a RAM and the like.

The processing circuit 35, when the signal is output from the timer circuit 34, the power-on / off control circuit 3
6 is controlled to turn on the power supply circuit 37. This allows
Power is supplied from the power supply circuit 37 to each unit, and the data receiving device 6 becomes operable.

Further, at this time, the processing circuit 35 causes the BS tuner 32 to pass through the BS tuner control circuit 31.
Control and select the channel through which the data of the newspaper company that has subscribed is transmitted. The BS tuner 32 receives the input I
The signal of the instructed channel is decoded from the F signal and output to the decoder 33. The decoder 33 decodes the data at the packet position containing the contracted newspaper data. The processing circuit 35 supplies the data decoded by the decoder 33 to the recording medium 42 via the recording medium driving circuit 41 of the recording device 7 to record the data. This recording medium 42 is
For example, it is composed of a hard disk. Alternatively, the processing circuit 35 records the output of the decoder 33 via the recording medium drive circuit 43 on the recording medium constituted by the mini disk 8, for example.

When a predetermined command is input, the processing circuit 35 reproduces the data recorded on the recording medium 42 or the mini disk 8 and supplies it to the video circuit 38 to convert it into a video signal. The signal output from the video circuit 38 is output to the television receiver 10 and displayed.
Alternatively, as described with reference to FIG. 1, by mounting the mini disk 8 in which newspaper data is recorded on the portable terminal device 9, a newspaper article can be viewed on the portable terminal device 9.

In this case, as described with reference to FIG. 12, since the newspaper data is composed of the search page and the article page, the search page (FIG. 12 (a)) is displayed first and the headline is displayed. By looking and selecting the necessary headline, the corresponding page of the article (FIG. 12B) can be displayed. Therefore, even if the display unit of the portable terminal device 9 or the television receiver 10 is small, it is possible to efficiently display information and quickly select and display a desired one.

The timer circuit 34 outputs a signal to the processing circuit 35 when the preset predetermined broadcast end time arrives. At this time, the processing circuit 35 controls the power supply circuit 37 via the power supply on / off control circuit 36 to stop the power supply to each unit. This completes the download of newspaper data.

If the user is receiving another channel during the broadcast time of the contracted newspaper data, the processing circuit 3
Reference numeral 5 causes the television receiver 10 to display a message prompting a channel change via the video circuit 38. Alternatively, a warning sound is generated. Furthermore, it is also possible to forcefully and automatically change the reception channel.

In the above, the user is allowed to set the time at which the data receiving device 6 operates, but when the power is on, the broadcasting of individual newspaper data included in the related information is started. If the broadcast time of the contracted newspaper data is automatically set in advance in the timer circuit by using the time and the broadcast end time, the user can set the time when the data receiving device 6 operates without the need to set the data. Even when the power of the receiving device 6 is turned off, it is possible to automatically receive the contracted newspaper data.

FIG. 15 shows the BS tuner 32 and the decoder 3
3 shows a more detailed configuration example of No. 3. The IF signal input from the outdoor device 5 is the FM demodulator 7 of the BS tuner 32.
Input to 1. A BS tuner control signal is input from the BS tuner control circuit 31 to the FM demodulator 71. The FM demodulator 71 demodulates the IF signal of the channel corresponding to the BS tuner control signal into a baseband signal and outputs it to the video signal / digital channel signal separation circuit 72. The video signal / digital channel signal separation circuit 72 separates the video signal and the digital channel signal from the input signal, and outputs the video signal to, for example, the television receiver 10 for display.

On the other hand, the digital channel signal separated by the video signal / digital channel signal separation circuit 72 is input to the 4-phase DPSK demodulator 73 and demodulated. The signal output from the 4-phase DPSK demodulator 73 is input to a digital channel signal separation circuit 74, where it is separated into a voice signal and an independent data channel signal. When the audio signal corresponds to the above-mentioned video signal, it is output to the television receiver 10.

On the other hand, the digital channel signal separation circuit 74 separates the independent data channel signal from the signal input from the 4-phase DPSK demodulator 73, and the decoder 33
To the newspaper data / related information separation circuit 81. The newspaper data / related information separation circuit 81 separates the newspaper data and the related information from the input signal, outputs the newspaper data to the data descrambler 87, and outputs the related information to the decoding circuit 82. The memory 83 has the decoder 33
Receiving device I assigned to (data receiving device 6)
D is stored in advance.

When the contract content of the receiving device ID matching the receiving device ID stored in the memory 83 is input as the related information, the decoding circuit 82 supplies the contract content to the contract condition comparing circuit 84, It is stored in the built-in memory 84A. Further, the decryption circuit 82 decrypts the scramble key transmitted as the related information (common information),
Output to the on / off switching circuit 85.

After that, when the data identifier is decoded from the inputted related information, this data identifier is supplied from the decoding circuit 82 to the contract condition comparison circuit 84.
The contract condition comparison circuit 84 changes the input data identifier to
The contract contents already stored in the memory 84A are compared. The contract contents include a data identifier of a newspaper that has been contracted in advance. The contract condition comparison circuit 84 determines that the data identifier stored in the memory 84A matches the data identifier supplied from the decoding circuit 82, unless the contract content includes payment of the contract fee and other prohibition conditions. , And outputs a control signal for switching the on / off switching circuit 85 to the on state. As a result, the scramble key output from the decoding circuit 82 is supplied to the PN generator 86 via the ON / OFF switching circuit 85.

The PN generator 86 generates a pseudo random sequence corresponding to the input scramble key. The data descrambler 87 descrambles the newspaper data supplied from the newspaper data / related information separating circuit 81 using the pseudo random sequence supplied from the PN generator 86. Then, the descrambled newspaper data is supplied to the recording device 7 and recorded in the recording medium 42 as the mini disk 8 or the hard disk as described above.

FIG. 16 shows another configuration example of the recording device 7. In this embodiment, the recording medium 106, such as a magneto-optical disk, is used as the recording medium driving circuit 10.
The data transmitted by the satellite 5 via the satellite 5 is recorded therein. Further, the data recorded on the recording medium 106 is read out as needed, and the memory card 108 is read via the drive circuit 107.
It is designed to be transferred to and stored in.

The CPU 100 controls the above-mentioned recording / reproducing operation in accordance with the program stored in the ROM 101, and stores the data necessary for the processing in the RAM 109. CPU 100 is a ROM
101, RAM 103, and timer circuit 104 together with I
It is formed on C102. The RAM 103 stores a maximum value that allows the number of times of data transfer from the recording medium 106 to the memory card 108, and the maximum value can be written only via the timer circuit 104. However, the CPU 100 can control the decrement of the maximum value and the reading of the stored value.

The display 110 is controlled by the CPU 100 and displays a message or the like.

Next, the operation will be described with reference to the flowchart of FIG. First, in step S1, the CPU 100 stores the data recorded in the recording medium 106 (this data is the one transmitted via the satellite 4 and received by the data receiving device 6) in the memory card 108. And determines whether a write command has been given. At this time, the date of the data to be transferred (the date when the data was received and recorded) is also designated.
If this command has not been input, the process proceeds to step S2, and various processes other than this transfer and writing are executed.

If it is determined in step S1 that transfer and writing are instructed, step S3
And the data transmitted via satellite 4 is received,
It is determined whether the data is written in the recording medium 106 via the recording medium driving circuit 105. When it is determined that the recording medium 106 is not written, the process proceeds to step S4 and the display 110 displays an error. That is, for example, a message such as "The specified instruction data is not received" is displayed on the display 110.
To display.

When it is determined in step S3 that the data is received, the process proceeds to step S5, and it is determined whether the ID of the medium is correct. That is, it is determined whether the ID of the memory card 108 is an ID as a recording medium that permits transfer. For example, ROM10
1 or the RAM 109 stores in advance the IDs of recording media that can be transferred (transfer is permitted).
The U100 reads the ID of the attached memory card 108 via the drive circuit 107, and determines whether the ID is included in the IDs of the recording media for which transfer is permitted. When it is determined that the read ID is not included in the recorded IDs, the process proceeds to step S6, in which a transferable medium (memory card in this embodiment) is not mounted. Execute the process. For example, the CPU 100 causes the display 110 to display a message such as “Please insert a proper memory card”.

If it is determined in step S5 that the ID of the mounted memory card 108 is included in the IDs for which transfer and writing are permitted, step S7
Then, the process proceeds to step S12 to read the variable N indicating the number of times of transfer and writing stored in the RAM 103, and determine whether the value is 0 or not. If the variable N is 0, step S8
Go to and execute the error display. That is, the CPU 100
Causes the display 110 to display a message such as “N _MAX data transfers have already been performed”. This allows the user to know that the data has already been read as many times as permitted.

That is, in this case, the recording medium 10
The data recorded in 6 has already been written N _MAX times in the memory card 1
Since the data is read in 08, it is not executed even if a transfer or write command is issued.

If it is determined in step S7 that the variable N is not 0, it means that the number of transfers and writes has not reached N _MAX times. Therefore, in this case, the process proceeds to step S9 and the CPU
Reference numeral 100 causes the data recorded in the recording medium 106 to be read, and transferred to and stored in the memory card 108. Furthermore, the CPU 100 causes the memory card 108 to read the data transferred and stored for confirmation. Then, in step S10, it is determined whether the data read from the memory card 108 is correct data. When it is determined that the data is not correctly written in the memory card 108, the process proceeds to step S11, and the media write failure process is executed. That is, the CPU 100
Causes the display 110 to display a message such as "memory card is abnormal".

In step S10, the memory card 1
When it is determined that the data is correctly written in 08, the process proceeds to step S12, and the variable N stored in the RAM 103 is decremented by 1. Then, in step S13, a transfer end process is executed. That is, the CPU 100 causes the display 110 to display a message such as “transfer is completed”.

As described above, the data recorded in the recording medium 106 the number of times N _MAX stored in the RAM 103 can be transferred to and stored in the memory card 108.

In the RAM 103, data is first transferred from the recording medium 106 to the memory card 108 in this way,
The number N _{MAX of} writing is stored, and writing of this value to the RAM 103 is executed as shown in the flowchart of FIG. 18, for example.

First, in step S21, it is determined whether it is midnight. That is, for example, the IC 102 including a one-chip microcomputer or the like has the timer circuit 104 built therein.
Always performs a timing operation. Then, when the midnight (00:00) is measured at midnight, a variable N stored in the RAM 103 is set to a preset value N _MAX . That is, the value N _MAX is written as a variable N at a predetermined address of the RAM 103. Also, at this time,
The date at that time is written in the variable DATE corresponding to the variable N. N _MAX can be 1 or 2, for example.

As described above, the value N _MAX is written to the variable N in the RAM 103 at midnight every day every day. Therefore, the user can transfer the data recorded in the recording medium 106 to the memory card 108 and store the data in the recording medium 106 only N _MAX times a day by the processing of FIG. 17 described above.

As described above, the variable N of the RAM 103 is set so that the timer circuit 104 has a predetermined time (00 in this embodiment).
Each time (00: 00), the specified value N _MAX
Will be updated. In other words, this variable N cannot be directly rewritten by the CPU 100 except when it is decremented. Therefore, the data recorded in the recording medium 106 cannot be transferred and stored in the memory card 108 more than the permitted number of times.

In the embodiment shown in FIG. 18, the timer circuit 1
The variable N is updated when 04 counts a predetermined time. Therefore, for example, the timer circuit 1
There is a possibility that the variable N of the RAM 103 may be intentionally updated by resetting 04 or the like. Therefore, for example, as shown in the flowchart of FIG. 19, the value N _MAX can be written in the variable N only when a predetermined condition is further satisfied.

That is, in this embodiment, step S
25 and step S27, step S2 of FIG.
The same process as in 1 and step S22 is executed. Then, in step S26 between steps S25 and S27, it is determined whether or not the flag F is 1, and only when the flag F is 1, the variable N is updated to the value N _MAX. Has been done.

The flag F can be set to 1 or 0 by the processing shown in FIGS.

In the embodiment shown in FIG. 20, the timer circuit 1
The continuity of the time information output by 04 is determined.

That is, first, in step S31, the variable T is set to (t + 1). The variable T is a variable for determining the continuity of the time information, and the variable t corresponds to the time of the time information output by the timer circuit 104 performing the time counting operation. That is, for example, at midnight (00:00), the value T is set to the variable T.

Next, in step S32, the hour is set, that is,
0, like 1:00, 2:00, 3:00, etc.
It waits until 0 minutes is timed, and when it is the hour, the process proceeds to step S33, and it is determined whether or not the variable T and the variable t corresponding to the time at the hour are equal. For example, in step S31, the variable T is set to 1 at 00:00.
When is set, it is determined whether or not the variable t corresponding to the time at the next hour is 1:00 at the next hour on the hour.

However, in step S33, if the value corresponding to the current time is 0, the variable t is 24
Is treated as.

In step S33, variable T and variable t
If it is determined that the variables T are equal to each other, the process proceeds to step S34, and it is determined whether or not the variable T is equal to 24. Variable T is 24
If the variable T is not equal to
Is incremented only. And again step S3
Go to 2 and wait until the hour.

As a result of repeatedly executing the above steps S32 to S35, the variable T is incremented by 1 every one hour. Similarly, the timer circuit 10
The variable t is also incremented by 1 when 4 is correctly performing the timing operation. Therefore, for example, the processing of steps S32 to S35 is repeatedly executed 24 times on the hour from 00:00 to 23:00.

Then, the variable T and the variable t are compared with each other 24 times, and if both match with each other 24 times, the process proceeds from step S34 to step S36, and the flag F is set to 1.

After that, returning to step S31, (t + 1) is set to the variable T (normally, this processing is performed at 00:00, so T = 1), and the subsequent processing is repeated.

Therefore, the timer circuit 104 starts from 1 o'clock to 24 hours.
When you correctly measure each hour up to the hour (midnight),
The flag F is set to 1.

On the other hand, the user has the timer circuit 104
When the variable t (current time) is set to a predetermined value by, for example, manually adjusting, the variable T and the variable t do not match in step S33. At this time, the process proceeds to step S37, and the flag F is set to 0. After that, the process returns to step S31, and the subsequent processes are repeatedly executed.

As described above, in this embodiment, the number corresponding to the time of the time measured by the timer circuit 104 is
The flag F is set to 1 only when sequentially incremented like 1, 2, 3, ..., 23, 24.

In this way, the state of the flag F set every 00:00 is determined in step S26 of FIG. 19, and when the flag F is set to 1, that is, in FIG. In the embodiment, when the time information is continuously obtained, the variable N is the value N.
It will be updated to _MAX .

FIG. 21 shows another embodiment in which the flag F is set. In this embodiment, step S5
1, the variable n corresponding to the number of times indicating that the interval of the time information output by the timer circuit 104 is a correct interval.
Are initialized to 0. Then, in step S52, counting of clocks output by the clock generation circuit incorporated in the timer circuit 104 is started. This clock counting is repeatedly executed until the arrival of the hour is detected in step S53.

When the arrival of the hour is detected in step S53, the count value C of the clock counted in one hour is compared with a predetermined reference value set in step S54. When the count value C of the clock is equal to or greater than the preset reference value, the process proceeds to step S55,
Increment the variable n by 1. When it is determined in step S54 that the count value C is smaller than the preset reference value, the process of incrementing the variable n in step S55 is skipped.

Next, in step S56, it is determined whether or not the time at the current time is zero hour. If it is not zero, the process proceeds to step S57, and the clock count value C
Is reset to 0, the process proceeds to step S52, and clock counting is restarted.

In step S54 described above, the reference value to be compared with the count value C of the clock is set to a value that is obtained when the clock is correctly counted in one hour, or a value that is close to that value and is smaller than that value. Has been done. For example, if this clock is generated once per second, the reference value is set to 3600 or a value slightly smaller than that.

Therefore, by repeatedly performing the processing of steps S52 to S57,
The number of times when the time interval measured by the timer circuit 104 is a correct interval is set in the variable n. This variable n
Becomes 24 every 24 hours when the timer circuit 104 is operating properly.

Therefore, when it is determined in step S56 that the midnight time has been clocked, step S5
Proceeding to 8, it is determined whether the variable n is equal to 24.
When the variable n is equal to 24, the process proceeds to step S59, and the flag F is set to 1. When the variable n is not equal to 24, the process proceeds to step S60, and the flag F is set to 0.

As described above, in this embodiment, it is determined whether the interval of the time information measured by the timer circuit 104 is correct, and if it is correct, the flag F is set to 1.

FIG. 22 shows another embodiment in which the flag F is set. In this embodiment, first, in step S81, the variable T is set to a value obtained by adding 1 to the value t corresponding to the time value at the current time. For example,
When the current time is midnight, 1 is set in the variable T.

Next, in step S82, the timer circuit 1
Counting of clocks generated by the clock generation circuit built in 04 is started. This clock is counted in step S
At 83, the hour continues until the hour is clocked.

When the hour is measured in step S83, the process proceeds to step S84, and it is determined whether or not the variable T and the variable t corresponding to the time value at the current time are equal. When the variable T is equal to the variable t, the process proceeds to step S85, and the count value C of the clock counted in step S82 is
It is determined whether or not it is equal to or greater than a preset reference value. If the count value C is greater than or equal to the reference value, step S8
After proceeding to step 6 and resetting the variable C to 0, step S8
Proceeding to 7, it is determined whether the variable T is equal to 24. If the variable T is not equal to 24, step S8
In step 8, the variable T is incremented by 1. Then, returning to step S82, the operation of counting the number of clocks for one hour is repeated.

By repeatedly executing the above steps S82 to S88, it is judged whether both the continuity and the interval of the time information measured by the timer circuit 104 are correct. When the time information is continuous and the intervals of the time information are correct, the variable T is set to 24 at the timing when 24 hours have passed. In this case, the process proceeds from step S87 to step S89, and the flag F is set to 1.

On the other hand, in step S84,
If it is determined that the variable T is not equal to the variable t, or if it is determined in step S85 that the count value C is smaller than the reference value, the process proceeds to step S90, and the flag F is set to 0.

As described above, in this embodiment, the flag F is set to 1 only when both the continuity and the interval of the time information output by the timer circuit 104 are normal.

As described above, the processing shown in FIGS.
The program stored in the ROM incorporated in the IC 102 is executed by the CPU also incorporated in the IC 102. Since it is generally not easy to change this program, it is possible to reliably limit the number of data transfers and recordings.

While the present invention has been described above by taking the case of transmitting newspaper data as an example, the present invention can be applied to the case of transmitting magazine, book, or other character data. Furthermore, in addition to character data, it is possible to transmit image data and voice data at the same time.

[0116]

As described above, according to the data writing apparatus of the present invention, the first storage means is associated with the time information output from the timekeeping means and the number of transfers stored in the third storage means. Since the transfer of the data from the first storage unit to the second storage unit is controlled, it is possible to prevent the data written in the first storage unit from being transferred and recorded more than necessary.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a data broadcasting system to which a data writing device of the present invention is applied.

2 is a block diagram showing a configuration example of a broadcast center 3 in FIG.

3 is a diagram illustrating a spectrum of data input to the FM modulator 18 of FIG.

4 is a digital channel signal multiplexing circuit 1 of FIG.
6 is a diagram illustrating a format of digital channel data in FIG.

FIG. 5 is a diagram illustrating range bits in the format of FIG.

FIG. 6 is a diagram for explaining a packet format of an independent data channel.

FIG. 7 is a diagram illustrating a function of the header of FIG.

[Fig. 8] Fig. 8 is a diagram for describing a diagonal multiplexing method in an independent data channel.

9 is a diagram illustrating data recorded in a packet of an independent data channel in FIG.

FIG. 10 is a diagram illustrating packet positions forming an independent data channel.

FIG. 11 is a diagram illustrating a detailed format of a packet.

FIG. 12 is a diagram illustrating a search page and an article page.

FIG. 13 is a diagram illustrating a relationship between a search page and an article page.

14 is a block diagram showing a configuration example of a data receiving device 6 in FIG.

15 is a block diagram showing a more detailed configuration of the BS tuner 32 and the decoder 33 of FIG.

16 is a block diagram illustrating another configuration example of the recording device 7 in FIG.

17 is a flowchart illustrating an operation of CPU 100 in FIG.

FIG. 18 is a flowchart illustrating an operation of CPU 100 in FIG.

19 is a flowchart illustrating an operation of CPU 100 in FIG.

20 is a flowchart showing an example of a process of setting a flag F in step S26 of FIG.

FIG. 21 is a flowchart showing an example of another process of setting the flag F in step S26 of FIG.

22 is a flowchart showing an example of still another process of setting the flag F in step S26 of FIG.

[Explanation of symbols]

 1 large-scale computer 2 workstation 3 broadcasting center 4 satellite 5 outdoor device 6 data receiving device 7 recording device 8 mini disk 9 portable terminal 10 television receiver 100 CPU 101 ROM 102 IC 103 RAM 104 timer circuit 106 recording medium 108 memory card 110 display

Claims (5)

[Claims] 1. A first storage means for storing data, a timing means for performing a timing operation and outputting time information, and a second storage means for transferring and storing the data read from the first storage means. Storage means, third storage means for storing the number of times of data transfer from the first storage means to the second storage means, time information output by the timekeeping means, and storage in the third storage means A data writing device, comprising: a control unit that controls the transfer of data from the first storage unit to the second storage unit according to the number of times of transfer performed. 2. A determination means for determining the continuity of the time information output by the timekeeping means is further provided, and the control means has the transfer within a range of the number of transfers stored in the third storage means. In this case, when the determination means determines that the time information is continuous, the transfer of data from the first storage means to the second storage means is permitted. 1. The data writing device according to 1. 3. A determination means for determining an interval of time information output by the timekeeping means is further provided, and the control means has the transfer within a range of the number of transfers stored in the third storage means. In one case, when the determination unit determines that the interval of the time information is larger than a predetermined reference value, the first storage unit outputs the second
2. The data writing device according to claim 1, wherein data transfer to the storage means is allowed. 4. The determination means for determining the continuity and the interval of the time information output by the timekeeping means is further provided, and the control means transfers the number of transfer times stored in the third storage means. In the case of being within the range, when the determination means determines that the time information is continuous and the interval is larger than a predetermined reference value, the first storage means moves to the second storage means. 2. The data writing device according to claim 1, wherein the data transfer is allowed. 5. The data writing device according to claim 1, wherein the data includes article data.