JP2964934B2 - Satellite data broadcast receiving system and method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite data broadcast, and more particularly to a satellite data broadcast receiving system capable of easily receiving all programs to be reserved when a large number of programs are reserved and received.

[0002]

2. Description of the Related Art At present, practical use of satellite data broadcasting is being studied.

[0003] Satellite data broadcasting has a maximum transmission rate of 17
The speed is as high as 60 Kbps, and a plurality of programs can be multiplexed and transmitted on one channel. Since satellite data broadcasting can transmit information several tens to several hundred times or more in comparison with the current transmission rate (14.4 Kbps) of personal computer communication using a telephone line, a new information providing medium It is expected as.

In satellite data broadcasting, due to the increase in transmission rate and the multiplexing of a plurality of programs, it is necessary to make a reservation for receiving a desired program in advance in order to receive the desired program.

In the current satellite data broadcasting receiving system, it is possible to make a reservation for reception of up to four programs, but this is a number specified by hardware specifications. When the reception of the reserved program ends, it is necessary to perform a reservation operation for the next program.

[0006]

As described above, since various kinds of information are transmitted in satellite data broadcasting, programs desired to be received by satellite data broadcasting receivers inevitably increase.

For this reason, it is required that the satellite data broadcast receiving system be able to reserve a large number of programs irrespective of the hardware specifications, and that all the reserved programs can be reliably received. Required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and makes it possible to reserve a large number of programs regardless of hardware specifications. It is an object of the present invention to provide a satellite data broadcast receiving system that enables all receptions to be performed with a simple operation.

[0009]

In order to achieve the above object, a satellite data broadcast receiving system according to the present invention comprises a parabolic antenna for receiving radio waves of satellite data broadcast, and a bit stream signal obtained by demodulating an output signal of the parabolic antenna. A satellite broadcast receiver that outputs the data, and when the program data for identifying the satellite data broadcast program is input, the program data is held as many as possible, and the satellite data broadcast signal is converted from the bit stream signal. A packet data receiving unit for extracting, and sequentially extracting the program of the held program data from the satellite data broadcast signal, and outputting a reception completion signal indicating completion of the extraction of the program when the extraction of the program is completed In the satellite data broadcast receiving system having the following, the reception schedule of a plurality of programs in the satellite data broadcast desired to be received is The program data of the program reserved for reception is transmitted to the packet data receiving unit as many as can be held in the packet data receiving unit, and each time the reception completion signal is confirmed, the program data of another program reserved for reception is transmitted. A personal computer for sequentially transmitting program data to the packet data receiving unit is provided.

The satellite data broadcast receiving method according to the present invention further comprises the steps of: receiving a radio wave of the satellite data broadcast by a parabolic antenna; outputting a bit stream signal from a satellite broadcast receiver for demodulating an output signal of the parabolic antenna; When program data for identifying a data broadcast program is input, the program data is held as much as possible, a satellite data broadcast signal is extracted from the bit stream signal, and further the satellite data broadcast signal is extracted. The program of the held program data is sequentially extracted from among them, and when the extraction of the program is completed, the program reserved for reception is received by the packet data receiving unit which outputs a reception completion signal indicating the completion of the extraction of the program. In the satellite data broadcast receiving method, a program in the satellite data broadcast desired to be received is stored in a personal computer in advance. The personal computer transmits the program data of the program reserved for reception to the packet data receiving unit as many as can be held by the packet data receiving unit, and confirms the reception completion signal. Each time the program data of another program reserved for reception is sequentially transmitted to the packet data receiving unit.

In the satellite data broadcast receiving system configured as described above, a plurality of desired programs are reserved for reception by the personal computer, and the personal computer transmits the program data of the reserved programs to the packet data receiving section. Is transmitted to the packet data receiving unit as many as can be stored in the packet data receiving unit, and thereafter, every time the reception completion signal is confirmed, the program data of another program reserved for reception is transmitted to the packet data receiving unit.

Therefore, it is possible to make a reservation for receiving a program up to the number of storage capacities of the storage device of the personal computer, and it is not necessary to perform a reservation operation in consideration of the reservable number from hardware specifications.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a satellite data broadcast receiving system according to the present invention.

In FIG. 1, a satellite data broadcast receiving system of the present invention includes a satellite broadcast receiving section 1 for receiving and demodulating a radio wave of a satellite broadcast, and packet data of a program reserved for reception from a received signal (multiplexed). A data broadcast decoding unit 3 for extracting a program (a unit of the received data), a personal computer 5 for holding program data for identifying a program reserved for reception, and executing a program reception reservation according to a processing program. ing.

The satellite broadcast receiving section 1 includes a parabolic antenna 1a.
And a satellite broadcast receiver 1b. The satellite broadcast receiver 1b selects a satellite broadcast from radio waves input to the parabolic antenna 1a, performs a reception process, demodulates the signal, and outputs a bit stream signal.

The data broadcast decoding unit 3 comprises a packet data receiving unit 3a and a reception control unit 3b. The packet data receiving unit 3a is configured to output a satellite data broadcast packet from a bit stream signal output from the satellite broadcast receiver 1b. Data is extracted, and packet data of a program reserved for reception is extracted from the data. The reception control section 3b is an interface section between the personal computer 5 and the packet data receiving section 3a. The program extracted by the packet data receiving unit 3a is transmitted to a reproducing unit or a recording unit (not shown) for recording and reproduction.

A personal computer 5 has a CPU 5b for performing a reservation process for receiving a desired program in accordance with a processing program, and a memory 5 which is used when the CPU 5b performs the process and temporarily stores data necessary for the process.
a hard disk 5c for holding a reception reservation processing program, reception-reserved program data, etc .; a display unit 5d for displaying processing results of program reservation processing and reservation program reception processing; And an input unit 5e for inputting the information.

In such a configuration, when making a reservation for reception, the personal computer 5 is operated by using the input unit 5e.
The user inputs a plurality of program data desired to be reserved for reception. In accordance with the processing program, the personal computer 5 transmits a number of pieces of program data that can be held by the packet data receiving unit 3a to the packet data receiving unit 3a via the reception control unit 3b among a plurality of input program data. The packet data receiving unit 3a holds the transmitted program data and receives the packet data of the held program.

When the reception of the reserved program is completed, the packet data receiving section 3 a
The personal computer 5 transmits the next program data reserved for reception to the packet data receiving section 3a every time the personal computer 5 confirms the reception completion signal.

The personal computer 5 and the packet data receiving section 3a repeat the above processing until the reception of all the reserved programs is completed, and when the reception of all the reserved programs is completed, the program reception processing by reservation is completed. I do.

Next, the procedure for receiving a reserved program in the satellite data broadcast receiving system will be described with reference to FIG.

FIG. 2 is a flowchart showing a processing procedure of a program receiving operation by the reception reservation of the satellite data broadcast receiving system shown in FIG.

In FIG. 2, first, a reservation for receiving N programs is made to the personal computer 5 using the input section 5e (step 200).

At this time, the packet data receiving section 3a is initialized by a command from the personal computer 5 (step 201).

Next, the program data to be reserved for reception is transmitted from the personal computer 5 to the packet data receiving section 3a, and the packet data receiving section 3a holds the maximum number M of program data that can be reserved (step 20).
2).

The personal computer 5 executes step 20
At step 202, the maximum number M held in the packet data receiving unit 3a is subtracted from the number N of programs reserved at 0, and the remaining number of reservations P is calculated (step 203).

When the reception of the program is started by the packet data receiving section 3a in the reserved order (step 2).
04), the personal computer 5 checks whether there is a reception completion signal returned from the packet data receiving unit 3a,
It is determined whether the reception of the reserved program has been completed (step 205).

When the reception completion signal is returned from the packet data receiving section 3a and the completion of the reception of the reserved program is confirmed, the personal computer 5 subtracts 1 from the remaining reservation number P reserved for reception, and outputs a new remaining program. Is set (step 206).

Then, the value of the remaining reservation number P calculated in step 206 is compared with 1 (step 207). If the value of the remaining reservation number P is 1 or more, the program data of the next program reserved for reception Is transmitted to the packet data receiving unit 3a (step 208), and the process returns to step 204 to execute step 20.
The processing up to 7 is repeated.

On the other hand, if the value of the remaining number of reservations P is less than 1 as a result of the processing in step 207, it is determined that all the programs reserved for reception in step 200 have been received, and the reservation of the satellite data broadcast is completed. Is terminated.

Therefore, a reservation for a plurality of programs to be received can be made only for the personal computer 5.
To provide a satellite data broadcast receiving system with good operability since reception of all programs reserved for reception is automatically performed and there is no need to perform operations in consideration of the number of programs that can be reserved according to hardware specifications. Can be.

[0033]

Since the present invention is configured as described above, the following effects can be obtained.

Reception reservation of a plurality of programs desired to be received is made in the personal computer, and the program data of the program reserved for reception is transmitted to the packet data reception unit by the number that can be held in the packet data reception unit. Each time the completion signal is confirmed, the program data of another program reserved for reception is transmitted to the packet data receiving unit, so that the reception reservation of a plurality of programs desired to be received is made only to the personal computer, and the reception reservation is made. Since all programs are automatically received and there is no need to perform operations in consideration of the number of programs that can be reserved based on hardware specifications, a satellite data broadcast receiving system with good operability can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a satellite data broadcast receiving system of the present invention.

FIG. 2 is a flowchart showing a processing procedure of a program receiving operation by receiving reservation of the satellite data broadcast receiving system shown in FIG.

[Explanation of symbols]

 Reference Signs List 1 satellite broadcast receiving section 1a parabolic antenna 1b satellite broadcast receiver 3 data broadcast decoding section 3a packet data receiving section 3b reception control section 5 personal computer 5a memory 5b CPU 5c hard disk 5d display section 5e input section

Claims (2)

(57) [Claims] 1. A parabolic antenna for receiving a radio wave of a satellite data broadcast, a satellite broadcast receiver for demodulating an output signal of the parabolic antenna to output a bit stream signal, and identifying the satellite data broadcast program. When program data is input, the program data is held as many as possible, the satellite data broadcast signal is extracted from the bit stream signal, and the program of the held program data is extracted from the satellite data broadcast signal. And a packet data receiving unit that outputs a reception completion signal notifying the completion of the extraction of the program when the extraction of the program is completed. A plurality of programs are reserved for reception, and program data of the reserved programs is transmitted to the packet data receiving unit. A personal computer that transmits the packet data to the packet data receiving unit by the number that can be held in the above, and sequentially transmits program data of another program reserved for receiving to the packet data receiving unit each time the reception completion signal is confirmed. Characteristic satellite data broadcast receiving system. 2. A program for receiving a radio wave of a satellite data broadcast by a parabolic antenna, outputting a bit stream signal from a satellite broadcast receiver for demodulating an output signal of the parabolic antenna, and identifying the satellite data broadcast program. When data is input, the program data is held as much as possible, a satellite data broadcast signal is extracted from the bit stream signal, and the program of the held program data is further extracted from the satellite data broadcast signals. By sequentially extracting, when the extraction of the program is completed, by a packet data receiving unit that outputs a reception completion signal indicating completion of the extraction of the program,
In a satellite data broadcast receiving method for receiving a program reserved for reception, a program in the satellite data broadcast desired to be received is reserved for reception in a personal computer in advance, and the personal computer receives the program reserved for reception. Is transmitted to the packet data receiving unit as many as can be held by the packet data receiving unit, and the program data of another program reserved for reception is transmitted to the packet data receiving unit every time the reception completion signal is confirmed. A satellite data broadcast receiving method, characterized by transmitting data sequentially.