JPS63276337A - Download system - Google Patents

Abstract

PURPOSE:To display whether or not a program data from a broadcast station is to be down-loaded into a personal computer by measuring the quantity of a stored content of a received program data and comparing it with a memory capacity possible for down-loading in the personal computer. CONSTITUTION:A user sends a program number desiring down-load to a personal computer 12 via a keyboard 12 through a 2-way interface 11 to a CPU 8. The CPU 8 stores the program number into a memory 10 and when the program data is sent from a broadcast station, the data is stored in the memory 7. In such a case, the CPU 8 calculates the total data number transferred to the personal computer 12 from the program memory 7 by using the count of a data counter 9 and displays the disabled down-load onto a display device 14 if the capacity of the program data to be down-loaded exceeds the capacity of the memory area possible for down-loading to the personal computer and displays the time required for down-loading when it is possible.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improvement of a download system for receiving and storing programs and data sent from a broadcasting station and downloading them to data processing means such as a personal computer. .

[Conventional technology]

Conventional download systems are capable of converting program data sent from broadcasting stations into text broadcasts, as described in "Development of Telesoftware Experimental System Using One-Coding Transmission Method Teletext Broadcasting" (Broadcasting Technology, 1986, pp. 286-291). When the user instructs the receiver to start downloading, the data transfer (download) from the teletext receiver to the computer starts immediately.However, the amount of data downloaded from the teletext receiver to the computer is limited. , it could not be detected by the computer until the download was completed.

[Problem that the invention seeks to solve]

In the above conventional technology, the personal computer cannot know the amount of data to be downloaded prior to downloading. Therefore, even if the downloadable memory area of the personal computer is smaller than the capacity of the data to be downloaded and downloading is impossible, there is a problem in that the personal computer starts downloading.

Further, data transfer from a teletext receiver to a personal computer often uses an R8-232C line that is installed in many personal computers. However, the data transfer speed of the R8-2320 line is usually 9600 bps at the maximum, and for example, it takes about 55 kbytes to transfer 64 Kbytes of data.
It takes seconds. In the conventional technology, since the amount of data to be transferred is not known before the transfer starts, the user has to wait until the data transfer is completed, and there is a problem in that the user does not know when the data transfer will end and feels uneasy.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to avoid downloading data if the amount of data to be downloaded is larger than the downloadable memory area of the personal computer, or to An object of the present invention is to provide a download system that notifies users of the time required for downloading in advance and relieves the user of anxiety during the waiting time until the download is completed.

[Means for solving problems]

The above object is to provide a download system having a function of receiving program data sent from a broadcasting station and storing the data to be downloaded in a program memory; A content amount transfer means is provided, and the downloading computer is equipped with a memory capacity comparison means that compares the amount of memory content transferred from the download system with the downloadable memory capacity in the computer, and a memory capacity comparison means that compares the amount of memory content transferred from the download system with the downloadable memory capacity in the computer, and a method for comparing the amount of memory content transferred from the download system. This is achieved by providing a time calculation means for calculating the time required for downloading.

[Effect]

The storage content amount measuring means of the received program data measures the capacity of the program data to be downloaded stored in the program memory. The storage content amount transfer means transfers the program data capacity measured by the storage content amount measuring means to the personal computer. The memory capacity comparison method in your computer is based on the program data capacity.
If the memory capacity is less than the downloadable memory capacity of the computer, the computer stops downloading. Therefore, even if the downloadable memory capacity of the personal computer is smaller than the capacity of the program data to be downloaded and the download is impossible, the problem of starting the download does not occur.

Further, the time calculation means within the personal computer calculates the time required to transfer the program data based on the capacity of the program data and the program data transfer speed from the download system to the personal computer, and displays the time required to transfer the program data prior to the transfer of the program data. . This allows the user to know in advance how much time it will take to complete the program data transfer, thereby eliminating the anxiety of not knowing when the download will end.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a teletext telesoft receiver according to an embodiment of the present invention.

1 is a broadcast station, 2 is a TV antenna, 3 is a TV tuner, 4
is a teletext decoder, 5 is a program search device, 6 is a gate,
7 is a program memory, 8 is a CPU, 9 is a data number counter,
10 is a program number memory, 11 is a two-way interface, 12 is a personal computer, 13 is a keyboard, and 14 is a display.

TV radio waves sent from a broadcasting station 1 are received by a TV tuner 3 via a TV antenna 2. The teletext decoder 4 is
The data packet of the TV double signal or teletext sent from the TV tuner 3 is extracted.

First, the user instructs the program number of the program he wishes to download to the personal computer 12 via the keyboard 13. The computer 12 sends this program number to the two-way interface 1.
1 to CPU8. The CPU 8 stores this program number in the program number memo IJ 10, and at the same time sends a program search start signal S to the program search device 5 and clears the data number counter 9. When the program search start signal S is input, the program search device 5 searches the program number memory 10 for a program with the same program number from the teletext packet data sent from the teletext decoder 4, and when the number is retrieved, The gate 6 is opened and the program data is stored in the number memory 7. The data number counter 9 increases by 1 each time 1 bit data is transferred from the gate 6 to the program memory 7.

When the program search device 5 finishes transferring the last data of the desired program, it closes the gate 6 and sends a program transfer end signal E to the CPU 8. The CPU 8 uses the value of the data number counter 9 to calculate the total number N of data to be transferred from the program memory 7 to the personal computer 12. To calculate N, for example, if the program data is packetized and one packet has 272 bits, of which the check code is 82 bits, the prefix is 14 bits, and the remaining 176 bits are valid data blocks, (1)
Calculate using formulas.

N (bits) =-・C(bits) −
-(1) Here, C is the value of the data number counter 9. Next, the CPU 8 transfers the value of N to the personal computer 12 via the bidirectional interface 11, and then waits for a response from the personal computer 12.

When the personal computer 12 receives N, it updates the storage capacity iM (bits) of the downloadable memory area inside the personal computer 12.
) and N, and perform the following processing based on the comparison result.

(b) When M<N, the capacity of the program data to be downloaded exceeds the capacity of the computer's downloadable memory area.
A display 14 is used to notify the user that downloading is not possible. Furthermore, a download cancel command is sent to the CPU 8 via the bidirectional interface 11.

When M≧N, the personal computer 12 calculates the transfer time T of the program data from the program memory 7 to the personal computer 12 using the formula Iwa).

T(Sl=”'danto ・・・・・・(2)R(b
itl) where R is the data transfer rate of the bidirectional interface 10. Next, using the display 14, the user is informed that the time required to complete the download is T(S). Furthermore, the bidirectional interface 11
A download start command is sent to the CPU 8 via.

The CPU 8 performs the following processing according to commands sent from the personal computer 12.

(c) When a down O-do cancel command is received, the program data is not transferred from the program memory 7 to the personal computer 12, and the system waits for designation of the received program number.

) Program memory 7 when download start command is received
program data is transferred to the personal computer 12 via the two-way interface 11. After the transfer is completed, the system waits for the reception number to be specified.

FIG. 2 is a block diagram of a second embodiment in which the present invention is applied to telesoftware using a data channel of satellite broadcasting. 20 is a broadcasting station, 21 is a broadcasting satellite, 4 is a parabolic antenna, Yoshi is a B8 tuner, and Tomi is a data channel decoder.

Radio waves sent from broadcasting station Canada are 1. It is received by a BS tuner n via a broadcasting satellite 21 and a parabolic antenna 22. The BS tuner path demodulates the received radio waves and sends them to the PC.
The M audio channel is extracted and sent to the data channel decoder Sae. The data channel decoder decodes the control signal of the PCM audio channel and extracts the data channel from the PCM audio channel. The subsequent operations are the same as in the first embodiment. The data channel corresponds to the teletext data packet in the first embodiment.

As described above, in this embodiment, if the capacity of the program data to be downloaded is larger than the capacity of the downloadable memory area of the personal computer, the download can be automatically canceled. Furthermore, when executing a download, the user can know in advance how long the download will take, which eliminates the anxiety of not knowing when the download will end.

〔Effect of the invention〕

According to the present invention, in the downloading PC,
By comparing the capacity of the data to be downloaded and the capacity of the downloadable memory area of the computer before executing the download, the capacity of the downloadable memory area of the computer is smaller than the capacity of the data to be downloaded. Since failures such as not being able to download all the data can be prevented, this has the effect of improving download efficiency. In addition, by calculating the time required for downloading based on the transfer speed at the time of downloading and the amount of data to be downloaded, and notifying the user in advance, this eliminates the user's anxiety of not knowing when the download will finish. This has the effect of improving the ease of use of the download system.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are block diagrams each showing an embodiment of the present invention. 4... Teletext decoder 5... Program search device 6.
...Gate 7...Program memory 8...c
pu 9...Data number counter 10...
・Program number memory 11...Two-way interface 12...PC 13...Keyboard 1
4...Display

Claims (1)

[Scope of Claims] 1. Means for receiving program data sent from a broadcasting station, program selection means for extracting a specific program designated in advance from the program data, and a program for storing data of the specific program. A download system comprising a memory and means for transferring the contents of the program memory to a data processing means such as a personal computer, comprising means for measuring the amount of stored contents stored in the program memory, and measuring the amount of the stored contents stored in the program memory. A download system characterized in that the amount of data is transferred to data processing means such as the personal computer. 2. The download system according to claim 1, wherein the measured amount of the stored content is transferred before the content of the program memory is transferred. 3. In the download system according to claim 1 or 2, the capacity of the downloadable memory area in the data processing means such as a personal computer is
A download system characterized in that, if the amount is less than the amount of stored content, data is not transferred from the program memory to the data processing means. 4. In the download system according to claim 1 or 2, the time required to transfer the contents of the program memory is calculated from the amount of the stored contents and the transfer speed of the data transfer means, and A download system characterized by displaying on a data processing means.