JPH0420555B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a satellite receiving device that selects and receives radio waves from a plurality of satellites, and more specifically, the present invention relates to a satellite receiving device that selects and receives radio waves from a plurality of satellites. The present invention relates to a satellite receiving device that prohibits reception.

(Prior art) A satellite receiving device that selects and receives radio waves from at least two or more satellites is a satellite receiving device that selects and receives radio waves from at least two or more satellites, as shown in the schematic diagram in _FIG . Radio waves from 1 ₁₈ are received by a parabolic antenna 2, passed through a feed horn 3 that switches between horizontal and vertical polarization, and supplied to a low noise amplifier 4 where they are amplified. The amplified output of the low noise amplifier 4 is converted to, for example, 1G by the block down converter 5.
The signal is converted into a frequency of Hz and supplied to a receiver 6 including a television receiver for reception. On the other hand, the satellite is equipped with a 24-channel transponder with a spacing of 40 MHz, for example. The antenna controller 7 receives the output from the receiver 6, supplies a drive output to the parabolic antenna 2, rotates the parabolic antenna 2 in the east-west direction according to the output from the receiver 6, and faces the designated satellite. The configuration is such that it is possible to select a so-called satellite.

In addition, 8 indicates an actuator that drives the parabolic antenna 2 in the east-west direction, and the feed horn 3
Although the actuator 8 and the actuator 8 are provided in the parabolic antenna 2, they are shown independently in FIG. 5 for the sake of explanation.

Further, the receiver 6 is configured to be able to selectively receive radio waves from a transponder within the satellite.

However, not all programs from satellites are necessarily suitable for children to watch.
There are some programs that parents, as parents, do not want their children to watch, and may want to prevent their children from receiving such radio waves. In this specification, prohibition of reception is referred to as lock or parental lock.

The lock in conventional satellite receivers is placed on the receiver itself. For this reason, when the receiver is locked, all functions of the receiver become inoperable, making it impossible to receive any radio waves.

(Object of the Invention) The present invention has been made in view of the above, and provides a satellite receiving device capable of eliminating the above-mentioned drawbacks and receiving radio waves other than radio waves from transponders prohibited by a lock. The purpose is to

(Structure of the Invention) As shown in the functional block diagram in FIG. It is provided with an antenna control means ₇₁ facing each other, a transponder specifying means 12 for specifying a transponder, and a transponder selecting means 13 for selecting radio waves from the transponder and making it receivable.

Furthermore, a storage means 14 is provided for storing a number corresponding to a transponder specified by the transponder specifying means 12 in response to a lock instruction from the lock instruction means 17. The number corresponding to the designated transponder is stored.

On the other hand, there is a detecting means 15 for comparing the stored contents of the storing means 14 and the number corresponding to the transponder selected by the transponder selecting means 13 to detect a match; The control means 16 substantially disables reception of radio waves from the transponder selected by the transponder.

(Operation) In the present invention as described above, the satellite designation means 11
The parabolic antenna 2 is driven by the antenna control means 7 ₁ by the output, and is made to face the satellite designated by the satellite designation means 11 . On the other hand, the output from the feed horn 3 of the parabolic antenna 2 is supplied to the transponder selection means 13, and the broadcast from the transponder selected by the transponder selection means 13 is received.

Further, when a lock instruction is given, the number corresponding to the transponder specified by the transponder specifying means 12 is stored in the storage means 14, and the control means 16 also controls the lock instruction means 17.
In response to the output, the antenna control means ₇₁ is made inoperative.

The number corresponding to the transponder selected by the transponder selection means 13 is stored in the storage means 14.
The detection means 15 compares the stored contents with the stored contents. If the number corresponding to the transponder selected by the transponder selection means 13 does not match the stored contents of the storage means 14 as a result of the comparison in the detection means 15, the detection means 15 does not generate an output, so that the selected transponder There is no problem in receiving radio waves from. When the stored content of the storage means 14 matches the number corresponding to the transponder selected by the transponder selection means 13, the detection means 15 generates an output. As a result, the output of the control means 16 substantially disables reception of radio waves from the transponder selected by the transponder selection means 13. Therefore, it becomes impossible to receive radio waves from the transponder specified by the transponder specifying means 12.

(Example of the invention) The present invention will be explained below with reference to Examples.

FIG. 2 is a block diagram showing the configuration of the main parts in one embodiment of the present invention.

In FIG. 2, the receiver 6 is provided with a control device 61 consisting of a microcomputer. The control device 61 essentially includes a CPU 61 ₁ , a ROM 61 ₂ that stores programs, and a RAM that stores data.
61 ₃ , an input port 61 ₄ , and an output port 61 ₅ , and the RAM 61 ₃ has a storage area S R for storing the number corresponding to the selected satellite and a storage area S _R for storing the number corresponding to the selected transponder. A storage area T _R , a storage area M for storing a recitation number for locking, a storage area T _L for storing a number corresponding to a locked transponder, and a flag area F for first to third flags are provided. .

Further, there is also a satellite designation switch 21, which is made up of, for example, a ten-key switch, and designates the number corresponding to the selected satellite, a transponder designation switch 22, which designates the number corresponding to the selected transponder, and a lock designation switch 23, which designates locking and changing the recited number. The output of is supplied to input port ₆₁₄ . The output of the satellite designation switch ₂₁ , the output of the transponder designation switch 22, and the output of the lock designation switch 23 supplied to the input port 614 are read into the CPU ₆₁₁ according to the program stored in the ROM ₆₁₂ , and are used for comparison, etc. Processing is done. The data processed by the CPU ₆₁₁ is sent to a transponder selection and demodulator 24 via an output port ₆₁₅ , and a switch inserted between the demodulator 24 and the receiver body 26 to selectively cut off video and audio signals. 25, a display device 27 having a display 27 ₁ for displaying a number corresponding to a satellite and a number corresponding to a transponder, and an indicator light 27 ₂ for indicating the status of the parental lock, and an antenna controller ₇ ; It is supplied according to a stored program. Note that hereinafter, the number corresponding to the satellite will be referred to as the satellite number, and the number corresponding to the transponder will be referred to as the transponder number.

The operation of the present invention configured as described above is carried out by ROM6
Based on the program stored in 1 ₂ ,
This will be explained using the flowchart shown in FIG.

As will become clear from the explanation of the flowchart to be described later, the satellite designation switch 21 also functions as a recitation number setting switch. Also, when the lock instruction switch 23 is pressed once, it is when the parental lock is performed, and when it is pressed twice in succession, it is when the recited number is changed. Furthermore, the flag "1" is a flag for identifying from the instruction to change the recitation number to the end, the flag "2" is a flag for identifying a new setting of the recitation number, and the flag "3" is a flag for identifying the recitation number change instruction to the end. This flag is used to identify when the parental lock is activated.

When the program is started, the flag is set to “1”
Initial settings including clearing "3" and setting a PIN number in storage area M are performed, and the system waits for the satellite designation switch 21, transponder designation switch 22, or lock designation switch 23 to be pressed.

If the satellite designation switch 21, transponder designation switch 22, and lock designation switch 23 are not pressed now, it is checked whether the lock designation switch 23 has been pressed once within a predetermined time (step a). In step a, it is determined that the lock instruction switch 23 has not been pressed once within the predetermined time, and it is checked whether the lock instruction switch 23 has been pressed twice within the predetermined time (step b). In step b, it is determined that the lock instruction switch 23 has not been pressed twice within a predetermined period of time, and then in step b,
It is checked whether the satellite indicator switch 21 has been pressed (step c). At step c, it is determined that the satellite indication switch 21 is not pressed, and after step c, it is checked whether the transponder indication switch 22 is pressed (step d). At step d, it is determined that the transponder instruction switch 22 is not pressed, and step a is executed following step d.

When the satellite designation switch 21 is pressed, the CPU 6
₁₁ , and following step c, it is checked whether the flag "1" is set (step e). Flag “1” at step e
When the flag "3" is not set, that is, when the lock instruction switch 23 is not pressed twice in succession, it is checked whether the flag "3" is set (step f). When the flag "3" is not set in step f, that is, when the parental lock has not been performed yet,
Following step f, the number of the satellite designated by the satellite designation switch 21 is displayed on the display ₂₇₁ and stored in the storage area _SR (step g). Next, code data corresponding to the satellite number designated by the satellite designation switch 21 is supplied to the antenna controller 7 (step h). The antenna controller 7 that received this code data controls the motor 8.
₁ , and the actuator 8 causes the parabolic antenna 2 to face the satellite designated by the satellite designation switch 21 in step c.

When the transponder designation switch 22 is pressed, it is recognized by the CPU ₆₁₁ , and following step d, the number of the transponder designated by the transponder designation switch 22 is displayed on the display ₂₇₁ and is also stored in the storage area _TR . memorized (step i). Data corresponding to the designated transponder number is then supplied to the demodulator 24;
It is tuned to the frequency of the designated transponder and demodulated. The output of the demodulator 24 is supplied to the receiver main body 26 via the switch 25 and is received (step j). After step j, it is checked whether flag "3" is set (step k). If the flag "3" is not set in step k, that is, if parental lock has not been established yet, step a is executed following step k.Therefore, the satellite selection and transponder selection are performed as described above. The desired radio waves are received.

Next, when the lock instruction switch 23 is pressed once, it is detected by the CPU 611, and the state of the flag "2" is checked following step a (step ₁ ). Flag “2” in step l
When the parent lock is not on, that is, when the parental lock is to be performed, the indicator light ₂₇₂ is made to blink after step 1 (step m). Following step m, the storage contents of storage area _TR are transferred to storage area _TL (step n), and a flag "3" is set (step o). Following step o, code data is supplied to the antenna controller 7 to lock the selected position of the satellite (step p). The antenna controller 7 that has received this coat data fixes the rotating position of the parabolic antenna 2 to the position immediately before it. Therefore, there is no new rotation of the parabolic antenna 2, and it is fixed to the satellite that was selected immediately before locking. Following step p, the switch 15 is turned off (step q).
As a result, a parental lock is performed in step n, and images and audio cannot be viewed. Therefore, in this state, when a satellite is designated by the satellite designation switch 21, the flag "3" has already been set.
Steps g and h are not executed and the antenna controller 7 does not drive the parabolic antenna 2.

Further, when the satellite designation switch 21 is pressed after performing the parental lock, step c is followed by step e and then step f.
In this case, since the lock instruction switch 23 has not been pressed twice in succession, the flag "1" is not set, and the flag "3" is set at step o, so the flag "3" is set at step f. It is determined that the satellite is standing, and following step f, the display on the display ₂₇₁ is shifted to the left (step r), and then the display of the number pressed on the satellite designation switch 21 is the lowest digit on the display ₂₇₁ . are displayed in sequence (step s). Following step s, it is checked whether the contents stored in the storage area M match the contents displayed on the display ₂₇₂ (step t). In this case, the designation by pressing the satellite designation switch 21 will be treated as the designation of the recitation number. By repeating this process, the recitation number is designated by pressing the satellite designation switch 21.

Next, even if the satellite designation switch 21 is pressed again while the parental lock is in place,
In this state, since the flag "3" is set, step r is executed and steps g and h are not executed. Therefore, the parabolic antenna 2 is not driven to rotate, no satellite is selected, and the instruction by pressing the satellite designation switch 21 is processed as an instruction for reciting a code number. Therefore, steps f, r, s and then t are executed, and step t
In this step, it is determined whether the stored contents of the storage area M match the recitation number designated by the satellite designation switch 21. If there is a mismatch, step d is executed after step t. New selection of satellites is prohibited as described above, but transponder selection is possible. Transponder designation switch 2
When a transponder is designated by step 2, steps i, j and k are executed following step d. In this case, flag “3” is set at step k.
is standing, and next to step k is the memory area.
The memory contents of T _R and the memory contents of storage area T _L are compared (step z). When the contents of both memories match in step z, the switch 25 is controlled to be in the OFF state following step z.
aa), then flash the indicator light 27 ₂ (step
ab), wait for execution of steps after step a. Therefore, when steps aa and ab are executed, receiver 6
In this case, no image is displayed and no sound is output. As a result, the parentally locked broadcast cannot be viewed unless the parental lock is released.

If it is determined in step z that the two stored contents do not match, the switch 25 is turned on (step ac) following step z, and then the indicator light ₂₇₂ is turned on (step ac).
ad), wait for execution of steps after step a. Therefore, when steps ac and ad are executed, the receiver 6 becomes in a state in which images and audio by broadcast radio waves from the selected transponder can be viewed. In this case, it is not possible to select a satellite, and only radio waves from transponders that are within the satellite that the parabolic antenna 2 is currently facing and are not parentally locked can be viewed.

In addition, in the parental lock state, the satellite designation switch 21 is pressed and steps e, f, r, s, and t are executed. If the recited numbers match,
Following step t, the state of the flag "1" is determined (step ae). When it is determined that the flag "1" is not set at step ae, that is, when the lock instruction switch 23 is not pressed twice in succession, the switch 25 is controlled to be on after step ae (step af). Then, code data for unlocking the selection of the satellite is supplied to the antenna controller 7 (step ag). The antenna controller 7 that has received this code data is controlled to be rotatable again. Following step ag, the indicator light ₂₇₂ is turned off (step ah), and then the flag "3" is reset (step ai). Following step ai, the memory contents of storage area T _L are cleared (step aj). As a result, the parentally locked transponder disappears, the parabolic antenna 2 is rotated via the antenna controller 7 in response to the satellite designation in step c, and the transponder is rotated in response to the transponder designation in step d. The designation is made.
In this case, following step k, the execution starts from step a, and steps z and aa to ad
will be bypassed.

As mentioned above, the parental lock can be canceled by inputting a PIN number that matches the PIN number stored previously, and the satellite can be specified using the satellite designation switch 21, and the specified transponder can be Designated switch 2
2 enables viewing of radio waves from the specified transponder.

Next, when it is determined in step b that the lock instruction switch 23 has been pressed twice in succession, a flag "1" is set following step b (step ak), and then the display on the display ₂₇₁ is turned off. (step al). Following step al, the indicator light ₂₇₂ is blinked (step am), and steps c and e are executed. In step e, it is determined that the flag "1" is set (this is a case where the lock instruction switch 23 is pressed twice in a row within a predetermined period of time to indicate that the recitation number is to be changed). , because the flag “1” is set in step ak),
Following step e, steps r, s, and t are executed. Therefore, in step c, the recitation number is designated by pressing the satellite designation switch 21. When the newly specified recitation number matches the stored contents of the storage area M in step t, the state of the flag "1" is checked following step t (step ae). In this case, it is determined in step ae that the flag "1" is set. This is the same as in step e. Following step ae, the flag "1" is reset (step an), then the flag "2" is set (step ao), and the display on the display ₂₇₁ is turned off (step ap). Subsequently, the updated recitation number is set by designation by pressing the satellite designation switch 21, and the lock designation switch 23 is pressed once. This pressing is determined in step a, and step l is executed following step a. In step l, since the flag "2" was set in step ao, the display 27 is displayed following step l.
₁ (in this case, the recitation number is displayed on the display ₂₇₁ ) is stored in the storage area M (step v). Therefore, the recitation number is stored in the storage area M. Following step v, the flag "2" is reset (step w), and then the indicator light ₂₇₂ is turned off (step x). step x
Subsequently, the contents stored in the storage areas S _R and _TR are displayed on the display ₂₇₁ (step y). Therefore, the display on the display ₂₇₁ is returned to the display before the recitation number was set. The updated recitation number is then newly stored in the storage area M in place of the old recitation number, and the recitation number is updated.

The operation of the embodiment of the present invention described above will be summarized as follows.

When the parental lock is not activated, a satellite designation switch 21 and a transponder designation switch 22 are used to select a satellite and a transponder.

To apply the parental lock, as shown in FIG. 4a, select the satellite and transponder to be locked (step bd) and press the lock instruction switch 23 once (step bb). This press causes the indicator light 27 ₂ to blink (step bc),
The transponder number selected in step ba is stored in the storage area T _L (step ba),
The parental lock will be applied. This lock also makes it impossible to change the satellite selection, making it virtually impossible to receive radio waves from the locked transponder.

When a transponder is selected while the parental lock is applied, the desired transponder is selected as shown in FIG. 4b (step ca). It is checked whether the transponder selected by this selection is equal to the parentally locked transponder (step CB), and if the result of this check is that they are equal, indicator light ₂ flashes,
The image cannot be seen and the audio output cannot be heard (step cc). As a result of the comparison in step cb, if they are not equal, the indicator light ₂₇₂ lights up, the image, etc. returns to normal (step cd), and normal viewing becomes possible. In this case, the satellite selection cannot be changed.

To release the parental lock from the parental lock state, as shown in FIG. 4c, the input from the satellite designation switch 21 is treated as a recitation number, and the recitation number is input (step da). It is checked whether the entered recitation number is equal to the memory contents of the memory area M (step db), and if they are equal, the indicator light ₂₇₂ is turned off (step dc), and the memory contents of the memory area T _L are locked. The transponder number that was previously stored is cleared (step dd). This releases the parental lock. Further, if the PIN number input in step db does not match the stored contents of the storage area M, the parental lock is not released and the PIN number must be input again.

When changing the recitation number, the lock instruction switch 23 is pressed twice in succession as shown in FIG. 4d (step ea). As a result, the display on the display ₂₇₁ disappears and the indicator light ₂₇₂ is made to blink (step eb). Next, enter the PIN number (step ec). The entered PIN number is stored in memory area M.
is checked (step
ed), when they are equal, the recitation number display on the display ₂₇₁ is extinguished (step ee). After step ee, enter the new PIN number (step ef),
Then, by pressing the lock instruction switch 23 once (step eg), the new recitation number is stored in the storage area M (step eh). Following this memorization, the indicator light ₂₇₂ is turned off (step ei), and the display ₂₇₁ displays the number of the selected satellite and the number of the selected transponder (step ei).
ej) It will happen.

(Effects of the Invention) As explained above, according to the present invention, the entire receiving device is not locked, but the designated transponder of the designated satellite is locked, and radio waves cannot be received from the designated transponder. It disappears. Further, since the driving of the antenna is stopped at the same time as the locking, radio waves from transponders other than the designated transponder of the designated satellite can be received. Furthermore, since the drive of the antenna is stopped, even if only a child remains behind and operates the antenna, there is no risk of an accident or damage to the antenna due to the drive of the antenna.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. 3 and 4 are flowcharts for explaining the operation in one embodiment of the present invention. FIG. 5 is a schematic configuration diagram showing an example of a satellite receiving device. 2...Antenna, 3...Feedhorn, 7 ₁
... Antenna control means, 11 ... Satellite designation means,
12...Transponder designation means, 13...Transponder selection means, 14...Storage means, 15...
. . . detection means, 16 . . . control means, 17 . . . locking means.

Claims (1)

[Claims] 1. Satellite designation means, antenna control means for driving an antenna in the direction of the designated satellite by the output of the satellite designation means, transponder designation means, transponder selection means for selecting radio waves from the transponder, and lock instruction means; The transponder number storage means stores the number corresponding to the transponder designated by the transponder designation means by a lock instruction, and the number corresponding to the transponder selected by the transponder selection means is compared with the stored contents of the transponder number storage means. and a detection means for detecting a coincidence, and an output from the lock instruction means to disable the antenna control means, and to substantially prevent the reception of radio waves from the transponder selected by the transponder selection means while the output from the detection means is being generated. 1. A satellite receiving device comprising: control means for disabling the satellite.