JPH07162774A - Satellite broadcast reception reservation device - Google Patents

Abstract

PURPOSE:To minimize the cut of the last part of preceding broadcasting when the reception ending time of preceding reservation and the reception starting time of the next reservation are the same in a satellite broadcast receiver with a built-in timer reception reservation function for receiving satellite broadcast or the like by a rotary type antenna. CONSTITUTION:Signals received by the antenna 1 and subjected to channel selection and demodulation in a tuner part 3 are signal-processed in a signal processing part 4, video signals are inputted to a display part 5 and displayed, and reception reservation setting from an input part 6 is stored in a memory part 7. The data in a memory part are read through a control part 12, a required time is subtracted from the reception starting time in an arithmetic part 10 and the signal is outputted by a discrimination part 11 at the time. The azimuth of a satellite to be received next and the azimuth of the satellite received in advance are read from a storage part 8, a difference is computed in the arithmetic part 10 and the time required for rotating the antenna is computed and subtracted from the next reception starting time. The signal of the azimuth of the reception object satellite is outputted to an actuator 2 at the time and the antenna is rotated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite broadcast reception reservation device, and more particularly to a device for rotating an antenna before a reception start time reserved for timer reception when a rotary antenna is used.

[0002]

2. Description of the Related Art A satellite broadcast receiver (hereinafter abbreviated as receiver) that receives satellite broadcasts (BS or CS) using a variable azimuth antenna receives a control signal corresponding to a satellite of a designated channel. From the machine to the actuator,
Rotate the antenna and align it with the azimuth of the receiving satellite. At that time, if the position (azimuth) of the satellite received last time and the position of the satellite received this time are distant from each other, it takes time for the antenna to rotate to the azimuth of the satellite received this time and to receive the radio wave normally. Therefore, when the timer reception reservation is set, there is a problem that the first part of the broadcast cannot be received unless the operation is started earlier than the reception start time.

[0003]

In the above case, the timer reception program may cause the receiver to start its operation and rotate the antenna before the required time before the reserved time. Therefore, when the end time of the first received broadcast and the start time of the next received broadcast are the same, it is unavoidable that the last part of the previous broadcast is cut. However, although the time required to rotate the antenna varies depending on the rotation angle, if the operation is started before the time set uniformly regardless of the position of the satellite, the time required for the satellite of the previous broadcast, for example, When the distance (azimuth) to the satellite of the next broadcast is short, the problem remains that the last part of the previous broadcast is cut too early as a result. In view of such a point, the present invention compares the azimuth angle of a satellite for which a timer reception reservation has been set with the azimuth angle of a satellite before the timer reception, and compares the azimuth angle of a satellite before reception with the azimuth angle of a broadcasting set for reception reservation according to the difference in azimuth angle. It is to provide a means to delay the start time of reception and minimize the cut of the last part of the previous broadcast.

[0004]

In order to solve the above problems, the present invention inputs a timer reception reservation setting or the like in a satellite broadcast receiver having a timer reception reservation function and receiving a satellite broadcast or the like with a rotary antenna. Input unit, a memory unit that stores timer reception reservation settings, etc. from the input unit, a storage unit that stores the azimuths of multiple satellites, the azimuths of the last reception, and the timer reception program, and the time. The time required to rotate the antenna is calculated based on the ticking clock part, the azimuth at the time of the previous reception read from the storage part, and the azimuth of the satellite set for reception reservation read from the memory part, and the reception start set time is calculated. From the operation unit, a determination unit that compares the time value from the operation unit with the time from the clock unit, an actuator that rotates the antenna, and the memo. Unit, a storage unit, a clock unit, a calculation unit, a determination unit, and a control unit for controlling the actuator. Based on the signal from the determination unit, the azimuth signal read from the storage unit is input to the actuator, and the antenna is turned on. The present invention provides a satellite broadcast reception reservation device that can rotate.

[0005]

With the above-described structure, in the satellite broadcast reception reservation apparatus according to the present invention, the azimuth at the time of the previous reception is read from the storage unit before the time required for the reception start set time by setting the timer reception reservation. , Calculating the difference from the azimuth angle of the satellite reserved for reception, calculating the time required to rotate the antenna based on this calculated value, subtracting this calculated value from the reception start set time, and A signal is output and the antenna is rotated so that the azimuth angle of the satellite reserved for reception is obtained. As a result, the antenna ends the rotation at the azimuth angle of the satellite that receives the satellite at the reception start set time.

[0006]

Embodiments of the satellite broadcast reception reservation apparatus according to the present invention will be described in detail below. FIG. 1 is a block diagram of essential parts of an embodiment of a satellite broadcast reception reservation apparatus according to the present invention. In the figure, reference numeral 1 denotes an antenna, which is a rotating antenna for both BS / CS or for receiving a plurality of CSs. Reference numeral 2 denotes an actuator, which rotationally drives the antenna 1. A tuner unit 3 selects and receives a signal from the antenna 1. A signal processing unit 4 demodulates the signal from the tuner unit 3 and outputs a video signal and the like. A display unit 5 displays on the screen based on a video signal or the like from the signal processing unit 4. An input unit 6 is used for inputting timer reception reservation settings and the like. A memory unit 7 stores timer reception reservation settings and the like from the input unit 6. A storage unit 8 stores the azimuth angles of a plurality of satellites, the azimuth angles at the previous reception, the timer reception program, and the like. Reference numeral 9 is a clock section, which keeps time. A computing unit 10 subtracts a preset required time from the reception start setting time read from the memory unit 7, and also, based on a signal from the determination unit 11 described later, reads the previous reception time from the storage unit 8. The difference between the azimuth angle of the hour and the azimuth angle of the satellite for which the reception reservation is set, read from the memory unit 7, is calculated, and this calculated value is multiplied by the required time value to determine the time required for the rotation of the antenna 1. The calculated time is subtracted from the reception start time read from the memory unit 7, and the antenna rotation start time is output. The determination unit 11 includes a calculation unit 10
Is compared with the time from the clock unit 9, and a signal is output before the time required for the reception start set time, and the arithmetic unit 10
The antenna rotation start time is compared with the time from the clock unit 9, and a signal is output when they match. A control unit 12 controls each unit.

Next, the operation of the satellite broadcast reception reservation apparatus according to the present invention will be described. The radio wave caught by the antenna 1 is converted into a required intermediate frequency signal and input to the tuner unit 3,
The signal is demodulated into a video signal and an audio signal, and required signal processing is performed by the signal processing unit 4, and the video signal is input to the display unit 5 and displayed on the screen.

From the input section 6, for example, as shown in FIG.
CB S1 channel from 11:00 to 13:30 and JCSAT-2 J3 channel from 13:30 to 15:00.
Enter the reception reservation up to. These reservations are input and recorded in the memory unit 7 via the control unit 12. And the control unit
The required time set from the reception start time read from the memory unit 7 via the control unit 12 by the calculation unit 10 via 12,
For example, 1 minute is subtracted. This signal is input to the discriminating unit 11, compared with the time from the clock unit 9, and a signal is output when they match. Note that this "1 minute" is the azimuth angle of the satellite that is most eastward from the antenna 1 (for example, SCC-B shown in FIG.
The azimuth of the westmost satellite from 2 ° (BS, 110 east longitude)
It is a time obtained by adding a necessary margin to the time required for turning up to (°), but is not limited to 1 minute. Some of the satellites shown in Fig. 3 are under planning.

[0009] For example, at present, the first reservation order "BS-7"
When the "channel" is being received, the determination unit 11 outputs a signal at 10:59, which is one minute before 11:00, which is the reception start time of the second reservation order. Then, the azimuth data read from the storage unit 8 via the control unit 12 by the discriminating unit 11 uses the azimuth angle of the BS and the east longitude of 110 ° and the azimuth angle of the SCC-B and the east longitude.
162 ° is discriminated and these data are input to the arithmetic unit 10. The storage unit 8 stores the difference in azimuth angle between the satellites, for example, as the number of pulses.

In the arithmetic unit 10, the east longitude 110 ° to the east longitude 162 °
Azimuth difference up to + 52 ° (“+” indicates that the direction of rotation is east), and then the time required to rotate this 52 ° (for example, 20 seconds) ) Is, for example, 1
It is calculated by, for example, multiplying the reference time per pulse by the number of pulses. Then, from 11:00, which is the reception start time of the "SCC-B, S1 channel", the above-mentioned calculation time,
For example, subtract 20 seconds to calculate "11:59:40" and
Enter in 11. The discriminating unit 11 compares the time from the clock unit 9, outputs a signal when the current time becomes “11:59:40”, and outputs the azimuth angle of “SCC-B” read from the storage unit 8, A signal corresponding to 162 ° east longitude is sent to the actuator 2 and the antenna 1 is rotated to the corresponding azimuth angle. As a result, the BS-7 channel broadcast is received until 11:59:40.

The rotation of the antenna 1 from the reception of the second reservation order to the "JCSAT-2, J3 channel" of the third reservation order is also performed by the same calculation as described above.
Since the difference between the azimuth angle of “B”, 162 ° east longitude and the azimuth angle of “JCSAT-2”, 154 ° east longitude is 8 °, the time required to rotate this angle difference is more than 20 seconds. It is calculated as short, for example, “5 seconds”. Therefore, "SCC-B"
The rotation of the antenna 1 from "JCSAT-2" to JCSAT-2
The reception start time of the SAT-2 and J3 channels is 13: 3
It starts at 13:29:55, 5 seconds before 0. This allows the second
The reservation order broadcast will be received until 13:29:55.

[0012]

As described above, according to the satellite broadcast reception reservation apparatus of the present invention, the reception end time of the previous broadcast and the reception start time of the next broadcast are the same for a plurality of reception reservations. In this case, the rotation start time of the antenna is accelerated / delayed according to the difference in azimuth angle between the satellite to be received first and the satellite to be received next, and the antenna is set to be in time for the start time of the broadcast to be received next. Since it rotates, it is possible to minimize the cut at the end of the broadcast received first.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of a satellite broadcast reception reservation device according to the present invention.

FIG. 2 is an example of a timer reception reservation.

FIG. 3 is a conceptual diagram showing an azimuth angle of a satellite.

[Explanation of symbols]

 1 Antenna (rotary type) 2 Actuator 3 Tuner part 4 Signal processing part 5 Display part 6 Input part 7 Memory part 8 Storage part 9 Clock part 10 Calculation part 11 Discrimination part 12 Control part

Claims (3)

[Claims] 1. A satellite broadcast receiver that has a timer reception reservation function and receives satellite broadcasts and the like with a rotary antenna,
An input unit for inputting timer reception reservation settings, etc., a memory unit for storing timer reception reservation settings, etc. from the input unit, azimuths of multiple satellites, azimuths at the last reception, and timer reception programs etc. The storage unit, the clock unit that keeps time, the rotation time of the antenna based on the azimuth angle at the time of the previous reception read from the storage unit and the azimuth angle of the satellite set for reception reservation read from the memory unit. An arithmetic unit that calculates and subtracts the required rotation time from the reception start set time, a determination unit that determines by comparing the time value from the arithmetic unit with the time from the clock unit, an actuator that rotates the antenna, and A memory unit, a storage unit, a clock unit, a calculation unit, a determination unit, and a control unit that controls the actuator,
A satellite broadcast reception reservation device in which an azimuth signal read from a storage unit based on a signal from the determination unit is input to an actuator to rotate an antenna. 2. The arithmetic unit subtracts a required set time from the reception start set time read from the memory unit, and the discriminating unit compares the time from the arithmetic unit with the time from the clock unit. Based on the signal from the determination unit, the antenna rotation based on the azimuth angle at the time of the previous reception read from the storage unit by the calculation unit and the azimuth angle of the satellite set for reception reservation read from the memory unit. The required rotation time is calculated, and the required rotation time is subtracted from the reception start set time to calculate the rotation start time of the antenna. 2. The satellite broadcast reception reservation device according to claim 1, wherein the antenna is rotated via the actuator based on a signal from the discriminating unit after comparing and discriminating with the time. 3. The storage unit is configured to store the difference in azimuth angle between satellites by the number of pulses, and the arithmetic unit sets the azimuth angle at the time of previous reception and the reception reservation read from the memory unit. The antenna rotation required time is calculated based on the number of pulses between the azimuth angles of the satellite.
The satellite broadcast reception reservation device described.