JP3525023B2 - Digital broadcast receiving system and digital broadcast recording system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving terminal device for receiving a digital broadcast and outputting a reproduction signal thereof (hereinafter,
The present invention relates to a digital broadcast receiving system composed of a set top box (abbreviated as STB) and a digital broadcast recording system composed of an STB and a recording device such as a VTR for recording a reproduction signal output from the STB.

[0002]

2. Description of the Related Art FIG. 5 is a set top box (STB) for receiving a conventional digital broadcast and outputting a reproduction signal thereof.
FIG. 1 is a diagram showing an example of a digital broadcast recording system including a recording device such as a VTR that records a reproduction signal output from 110 and the STB, in which 111 is an antenna for receiving a digital broadcast and 112 is an antenna 11.
1 is a tuner for selecting and outputting one of a plurality of transponders of a digital broadcast received. Reference numeral 113 denotes a transport decoder that selects and outputs one of a plurality of channels included in one transponder output by the tuner 112, and 114 denotes a digital signal of a specific channel output by the transport decoder 113 as an analog video image. , And an AV decoder that reproduces and outputs an audio signal. Further, 115 is a digital signal output from the transport decoder 113, or AV
It is an output unit that outputs the analog video and audio signals output by the decoder 114 to the outside. A system controller 117 controls the operations of the tuner 112, the transport decoder 113, and the output means 115. A user input unit 116 is used by the user to input control signals such as channel selection and program recording reservation. 118
Is a timer that receives a program recording reservation from the user input unit 117, holds it, and outputs a control signal for executing reservation to the system controller 117 when the reservation time comes.

Reference numeral 120 denotes a monitor that receives analog video and audio signals output from the AV decoder 114 and displays and outputs video and audio. 133 is a transport decoder 113 output from the output means 115 of the STB 110.
The digital signal output by the AV decoder 11 or
4 is a recording unit for recording the analog video and audio signals output by 4. A system controller 135 controls the operation of the recording unit 133.

Next, the operation of the conventional digital broadcast recording system will be described. When reserving a program display for digital broadcasting, the timer 118 holds and manages the inputted program display reservation information, and when the start time of the display target program arrives, the timer 118 controls the system controller 117 to execute reservation. Output a signal. System controller 11
7 is a tuner 1 in response to a control signal from the timer 118.
12 and the transport decoder 113 are operated.
The tuner 112 selects and outputs one of the transponders received by the antenna 111. The transponder normally includes programs of 4 to 6 channels, and the transport decoder 113 selects and extracts one of a plurality of channels included in the transponder received from the tuner 112, and extracts the selected channel. Output to. The AV decoder 114 reproduces the signal from the transport decoder 113 into video and audio and outputs it to the monitor 120.

In order to reserve a program recording for digital broadcasting, a program recording including input of information such as start time, end time, broadcast channel, etc. of a program desired to be recorded from a user input section 116 to a timer 118 on the STB 110 side. Make a reservation. The timer 118 holds and manages the input program recording reservation information, and outputs a control signal for executing reservation to the system controller 117 when the start time of the recording target program arrives. The system controller 117 is
In response to the control signal from the timer 118, the tuner 112,
The transport decoder 113 is controlled to select the channel of the recording target program, and the transport decoder 113 is selected.
The output unit 115 outputs the signal output from the recording device 130 or the signal output from the AV decoder 114 to the recording device 130. On the other hand, on the recording device 130 side, the recording device 1
The system controller 135 of 30 operates the recording unit 133 in response to the control signal received from the system controller 117 of the STB 110 side, and records the signal from the output means 115 of the STB 110 digitally or in analog form.

[0006]

The conventional digital broadcast recording system is configured as described above, and when the program display reservation or the program recording reservation is made for the digital broadcast program, when the program start time comes, the control from the timer is performed. The system controller on the STB side selects the reserved display channel in response to the signal, and at the same time, the output means or the monitor operates. Therefore, when the channel selected by the control signal is a transponder channel different from the transponder currently selected and output by the tuner, the transponder selected and output by the tuner must be switched and 0. Since it takes about 5 seconds, the program before the channel switching or the video during the channel switching is displayed or recorded before the program of the reserved channel is displayed or recorded, and the desired program is displayed from the start of the reserved program. Is not displayed or recorded.

Here, setting the tuner and previously turning on the power before the start time of the program is carried out by the current VCR. However, in the case of STB, since the program may be viewed even after the reservation is set, the tuner cannot be set in advance.

The present invention has been made to solve the above-mentioned problems, and the program before channel switching and the video during switching are displayed or recorded before the program of the reserved channel is displayed or recorded. It is an object of the present invention to provide a digital broadcast receiving system and a digital broadcast recording system that can avoid the inconvenience that a desired program is not displayed or recorded from the time of starting a reserved program.

[0009]

In order to solve the above-mentioned problems, a digital broadcast receiving system according to the present invention (Claim 1) receives a digital broadcast, and receives a digital broadcast signal from the received digital broadcast signal. A tuner for selecting and outputting one transponder signal, a transport decoder for selecting and outputting one channel signal from the one transponder signal output by the tuner, and a channel signal output by the transport decoder. A decoder for decoding and converting into an analog signal, an output means for outputting a digital signal output by the transport decoder or an analog signal output by the decoder, a timer for making a program display reservation or a program recording reservation for digital broadcasting, and
In a digital broadcast receiving system comprising a receiving terminal device having a system controller for controlling the operation of the tuner, the transport decoder and the output means, the timer and the system controller in the receiving terminal device are used for the program display reservation or the program recording reservation. Before the set program start time, the tuner is set so that the tuner selects and outputs a transponder signal including the channel of the program set in the program display reservation or the program recording reservation. .

A digital broadcast recording system according to the present invention (claim 2) receives a digital broadcast, selects a signal of a predetermined transponder from the received digital broadcast signal, and outputs the tuner. The tuner outputs the signal. A transport decoder that selects and outputs a signal of a predetermined channel from the signal of the predetermined transponder, a decoder that decodes a signal of the channel output by the transport decoder and converts it into an analog signal, and outputs by the transport decoder A receiving terminal device having an output means for outputting a digital signal or an analog signal output by the decoder, and a system controller for controlling the operations of the tuner, the transport decoder and the outputting means, and the output signal of the receiving terminal device is recorded. Record In a digital broadcast recording system including a timer for making a program recording reservation of a digital broadcast and a recording device having a system controller for controlling the operation of the recording unit, a system controller in the receiving terminal device and the timer in the recording device And the system controller of the transponder including the channel of the program set by the tuner in the program display reservation or the program recording reservation before the recording start time set in the program display reservation or the program recording reservation. The signal is set to be selected and output.

[0011]

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1. 1 is a diagram showing a configuration of a digital broadcast receiving system according to a first embodiment of the present invention. In the figure, 11 is an antenna for receiving digital broadcast, 12 is output signals of a plurality of transponders for digital broadcast received by antenna 11. It is a tuner that selects and outputs one of the above. A transport decoder 13 selects and outputs one of a plurality of channels included in the output signal of one transponder output from the tuner 12,
Reference numeral 14 is an AV decoder for reproducing a digital signal of a specific channel output from the transport decoder 13 into analog video and audio signals and outputting the reproduced signals. Also, 1
Reference numeral 5 is an output means for outputting the digital signal output by the transport decoder 13 or the analog video and audio signals output by the AV decoder 14 to the outside.
Reference numeral 16 is a user input unit through which the user inputs a control signal for channel switching or the like. A system controller 17 receives a control signal from the user input unit 16 and controls the operations of the tuner 12, the transport decoder 13, the AV decoder 14, and the output means 15.
A timer 18 receives a program recording reservation input from the user input unit 16 and holds it, and outputs a control signal for executing reservation to the system controller 17 when the reservation time comes. As described above, the STB 10 is composed of the tuner 12, the transport decoder 13, the AV decoder 14, the output means 15, and the system controller. A monitor 20 receives the video and audio signals output from the AV decoder 14 and displays the video and audio.

Next, the operation will be described. Tuner 12
Selects and outputs one of the output signals of the plurality of transponders received by the antenna 11. The output signal of the transponder normally includes programs of 4 to 6 channels, and the transport decoder 13 is a tuner 12
One of the plurality of channels included in the output signal of the transponder received from is selected and extracted, and this is output to the AV decoder 14. The AV decoder 14 reproduces the signal from the transport decoder 13 into video and audio and outputs it to the monitor 20 or the like. When recording a digital broadcast program, the signal output from the transport decoder 13 or the signal output from the AV decoder 14 is output to a recording device such as a VTR by the output means 15.

When a program display reservation or a program recording reservation is made for a digital broadcast program, when the program start time comes, the system controller 17 on the STB 10 side responds to the control signal from the timer 18 to change the reserved display channel. Simultaneously with the selection, the output means 15 or the monitor 20 also operates. Therefore, when the channel selected by the control signal is different from the channel currently selected and output by the transport decoder and the transponder is different from that channel, the tuner 12 must be operated to switch the transponder. During this period, the output means 15 or the monitor 20 has already been operated, and before the program of the reserved channel is displayed or recorded, the program before the channel switching, the video being switched, etc. are displayed or recorded and reserved. A desired program is not displayed or recorded from the start of the program.

In the digital broadcast recording system according to the first embodiment, the timer 18 starts the reservation start 1 when the timer has a program reservation as shown in the flowchart of FIG.
A control signal for selecting a display channel is output to the system controller 17 seconds before, and the channel of the program reserved in the timer 18 is different from the channel currently set in the transport decoder 13, and the transponder is transposed. When the tuner 12 needs to switch the transponder, which is different from the one currently set for the port decoder 13, the system controller 17 switches the transponder currently set by the tuner 12 to make a reservation. Set to select the transponder of the selected program channel. Next, the timer 18 operates the monitor 20 or the system controller 1 at the program start time.
7, a control signal for starting recording is output to the system controller 17, and the system controller 17 outputs the transport decoder 13 and the output means 1.
5, the transport decoder 13 selects and extracts the channel of the reserved program from the plurality of channels included in the transponder received from the tuner 12, outputs it to the output means 15, and outputs it from the output means 15. The program is output as a digital signal or an analog signal to a recording device such as a VTR. Therefore, when a program display reservation or a program recording reservation is made for digital broadcasting, the channel of the reserved program is set to the transport decoder 1
3, which is on a different transponder and is different from the channel currently set to 3.
Even when it is necessary to switch the transponders, the transponders are switched before the start of the program, and the monitor 20 or the output means 15 starts to operate at the start of the program. Avoid the inconvenience that the program before channel switching or the video being switched is displayed or recorded before the program of the reserved channel is displayed or recorded, and the desired program is not displayed or recorded from the beginning of the reserved program. can do.

As described above, in the digital broadcast receiving system according to the first embodiment, the digital broadcast is received,
Tuner for selecting and outputting one transponder signal from the received digital broadcast signal, transport decoder for selecting and outputting one channel signal from the one transponder signal output by the tuner, and transport decoder Decoder that decodes the signal of the channel output by and converts it to an analog signal,
Output means for outputting a digital signal output by the transport decoder or an analog signal output by the decoder, a timer for making a program display reservation or a program recording reservation for digital broadcasting, and the operation of the tuner, the transport decoder and the output means. In a digital broadcast receiving system consisting of a receiving terminal device having a system controller for controlling, the timer and the system controller in the receiving terminal device, before the start time of the program set in the program display reservation or program recording reservation, Since the tuner is set to select and output the signal of the transponder including the channel of the program set in the program display reservation or the program recording reservation, the program of the reserved channel is displayed or It is displayed or recorded video or the like in the program and switching before channel switching is before the bounded, the desired program from the time of reserved program starts can be avoided a disadvantage that it is not displayed or recorded.

In the first embodiment, the tuner 12 is set to select the signal of the transponder including the program set in the timer before the start time of the program. It goes without saying that the transport decoder 13 can also be set to switch the channel and select the program channel set in the timer before the time. In this case, a more complete display or recording is secured at the start of the program.

The time for outputting the control signal for selecting the display channel before the program start time set in the timer 18 is 1 second in the first embodiment, but it is not limited to this. An appropriate time can be set in consideration of the time required for the tuner to switch the transponder.

Embodiment 2. 3 is a diagram showing a configuration of a digital broadcast recording system according to a second embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. Further, 33 is a digital signal output from the output means 15 and output from the transport decoder 13,
Alternatively, analog video output by the AV decoder 14,
And a recording unit for recording audio signals. A user input unit 34 is used by the user to input a control signal such as channel switching. A system controller 35 receives a control signal from the user input unit, controls the operation of the recording unit 33, and exchanges control signals with the system controller 17 on the STB side. 36 is a user input unit 3
It is a timer that receives a program recording reservation input from 4 and holds it, and outputs a control signal for executing reservation to the system controller 35 when the reservation time comes.

Next, the operation will be described. When recording a digital broadcast program, the timer 36 outputs a control signal for executing reservation based on the recorded program reservation input from the user input unit 34 to the system controller 35 on the recording device 30 side. The system controller 35 outputs the control signal to the system controller 17 on the STB side, and the system controller 17 controls the tuner 12 and the transport decoder 13 according to the control signal to select the channel of the recording target program. The output unit 15 is operated to output the signal output from the transport decoder 13 or the signal output from the AV decoder 14 to the recording unit 33 by the output unit 15. Further, the system controller 35 on the recording device 30 side operates the recording unit 33 in response to the control signal to output the output unit 1.
The signal from 5 is digitally recorded or analog recorded. As described above, even when the input unit 34 and the timer 36 are provided on the recording device 30 side, the two system controllers work together to simultaneously receive the control signal from the timer 36,
The system controller 17 on the STB side selects the reserved display channel and operates the output means 15, and the system controller 35 on the recording device side operates the recording device 33 to start recording. The currently selected channel is the tuner 12
Is different from the channel belonging to the transponder being selected and output, the transponder must be switched, and during this period, the output means 15 has already been operated and recording is started in the recording unit 33, and the program of the reserved channel is recorded. There is an inconvenience that a program before channel switching, a video being switched, and the like are previously recorded, and a desired program is not recorded at the start of the reserved program.

In the digital broadcast recording system according to the second embodiment, as shown in the flowchart of FIG. 4, when the timer 36 has a program recording reservation for digital broadcast,
The timer 36 outputs a display channel selection control signal to the system controller 17 via the system controller 35 one second before the reservation starts, and the channel of the reserved program belongs to the transponder currently selected and output by the tuner 12. When the transponder needs to be switched unlike the channel, the system controller 17 switches the transponder of the tuner 12 in advance. Next, the timer 36 outputs a recording start control signal to the system controller 35 when the program start time arrives, the control signal is output from the system controller 35 to the system controller 17, and the system controller 17 transports the decoder. 13 and the output means 15 are operated, the transport decoder 13 selects and extracts the channel of the reserved program from the plurality of channels included in the transponder received from the tuner 12, outputs the selected program channel to the output means 15, and outputs it. A desired program from 15 is output as a digital signal or an analog signal to a recording device such as a VTR, and the system controller 35 operates the recording section 33 to record the signal from the output means 15. Therefore, when a program recording reservation of a digital broadcast is made in the timer 36 provided on the recording device 30 side, the channel of the reserved program is different from the channel currently set in the transport decoder 13, Even if the transponder is different from the currently set channel and it is necessary to switch the transponder in the tuner 12, the transponder is switched and the recording is performed before the reserved recording starts. Since the part 33 does not record before the start of recording, a desired program is recorded in the recording part 33 from the reserved recording start time. That is, it is possible to avoid the inconvenience that a program before channel switching, a video being switched, and the like are recorded before a program of a reserved channel is recorded, and a desired program is not recorded from the start of the reserved program. .

As described above, in the digital broadcast recording system according to the second embodiment, the digital broadcast is received,
A tuner for selecting and outputting a signal of a predetermined transponder from a received digital broadcast signal, a transport decoder for selecting and outputting a signal of a predetermined channel from the signal of the predetermined transponder output by the tuner, and a transport decoder Decoder that decodes the signal of the channel output by and converts it to an analog signal,
A receiving terminal device having output means for outputting a digital signal output by the transport decoder or an analog signal output by the decoder, and a receiving terminal device having a system controller for controlling the operations of the tuner, the transport decoder, and the output means, and the receiving device. A digital broadcast recording system comprising a recording unit for recording an output signal of a terminal device, a timer for making a program recording reservation of a digital broadcast, and a recording device having a system controller for controlling the operation of the recording unit. The system controller, and the timer and the system controller in the recording device, cause the tuner to set the program display reservation or the tuner before the recording start time set in the program display reservation or the program recording reservation. Since it is set to select and output the signal of the transponder including the channel of the program set in the group recording reservation, the program before the channel switching or the program being switched before the program of the reserved channel is recorded. It is possible to avoid the inconvenience that a desired program is not recorded from the time when the reserved program is started because the video or the like is recorded.

In the second embodiment, the timer 36
Outputs a control signal for selecting a display channel to the system controller 17 via the system controller 35 one second before the reservation starts, and the system controller 17 switches the transponder of the tuner 12 so that when the program start time comes, the system controller 17 A control signal for starting recording is output to the system controller 17 via 35,
The system controller 17 operates the output means 15, and the system controller 35 causes the recording unit 3 to operate.
However, the timer 36 outputs the control signal for selecting the display channel and the control signal for starting the operation of the output means to the system controller 35 one second before the reservation starts, and these control signals are sent to the system controller. 35 is output to the system controller 17, and the system controller 17 operates the tuner 12, the transport decoder 13, and the output means 15, and the tuner 1
2, the transponder is switched, and the transport decoder 13 selects the reserved program channel,
The extracted program is output to the output means 15, and the desired program is output from the output means 15 as a digital signal or an analog signal V.
When the program start time comes, a recording start control signal is output to the system controller 35, and the system controller 35
May operate the recording unit 33.

Further, in the second embodiment, the recording device 30
Although the timer 36 is provided only on the side, the timer is also provided on the STB side as in the first embodiment (see FIG. 1), and the timer information received by the timer 36 on the recording device 30 side is set to the timer on the STB side. With such a configuration, it is possible to perform the same processing as in the first embodiment.

The time for outputting the control signal for selecting the display channel before the program start time set in the timer 18 is set to 1 second in the second embodiment as in the first embodiment. However, the present invention is not limited to this, and it goes without saying that an appropriate time can be set in consideration of the time required for the tuner to switch the transponder.

[0025]

As described above, according to the digital broadcast recording system of the present invention (Claim 1), a digital broadcast is received, and one transponder signal is selected from the received digital broadcast signals and output. A tuner, a transport decoder for selecting and outputting a signal of one channel from the signal of the one transponder output by the tuner, a decoder for decoding a signal of a channel output by the transport decoder and converting it into an analog signal, Output means for outputting a digital signal output by the transport decoder or an analog signal output by the decoder, a timer for making a program display reservation or a program recording reservation for digital broadcasting, and the operation of the tuner, the transport decoder and the output means. Control system In the digital broadcast receiving system comprising a receiving apparatus having a roller, the said timers and a system controller in the receiving terminal apparatus,
Before the start time of the program set in the program display reservation or the program recording reservation, the tuner selects the signal of the transponder including the channel of the program set in the program display reservation or the program recording reservation, Since it is set to output, the program before the channel switching or the video being switched is displayed or recorded before the program of the reserved channel is displayed or recorded, and it is desired from the start of the reserved program. There is an effect that it is possible to avoid the inconvenience that the program to be displayed is not displayed or recorded.

Further, according to the digital broadcast recording system of the present invention (claim 2), a tuner for receiving a digital broadcast, selecting a signal of a predetermined transponder from the received digital broadcast signal, and outputting the selected signal is provided. A transport decoder that selects and outputs a signal of a predetermined channel from the signal of the predetermined transponder that is output, a decoder that decodes the signal of the channel output by the transport decoder and converts it into an analog signal, and the transport decoder A receiving terminal device having an output means for outputting a digital signal to be output or an analog signal output by the decoder, and a system controller for controlling the operations of the tuner, the transport decoder, and the output means, and the output signal of the receiving terminal device. Record In a digital broadcast recording system including a recording unit, a timer for making a program recording reservation of a digital broadcast, and a system controller for controlling the operation of the recording unit, a system controller in the receiving terminal device and a recording device in the recording device The timer and system controller are
Before the recording start time set in the program display reservation or the program recording reservation, the tuner selects the signal of the transponder including the channel of the program set in the program display reservation or the program recording reservation,
Since it is set to output, the program before channel switching or the video during switching is displayed or recorded before the program of the reserved channel is recorded, and the desired program from the start of the reserved program This has the effect of avoiding the inconvenience of not being recorded.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a digital broadcast receiving system according to a first embodiment of the present invention.

FIG. 2 is a flow chart diagram for explaining a channel setting process at the time of program display reservation in the digital broadcast receiving system according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a digital broadcast recording system according to a second embodiment of the present invention.

FIG. 4 is a flowchart diagram for explaining a channel setting process at the time of program recording reservation in the digital broadcast recording system according to the second embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of an example of a conventional digital broadcast recording system.

[Explanation of symbols]

10 Set Top Box (STB) 11 Digital broadcasting receiving antenna 12 STB side tuner 13 Transport decoder 14 AV decoder 15 Output means 16 STB user input section 17 STB side system controller 18 STB side timer 20 monitors 30 recording device 33 recording section 34 User input section on recording device side 35 System controller on the recording device side 36 Timer on recording device side

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Claims (2)

(57) [Claims] 1. A tuner for receiving digital broadcasting, selecting a signal of one transponder from the received digital broadcasting signal and outputting the selected signal, and selecting a signal of one channel from the signal of the one transponder output by the tuner. Output decoder, a decoder for decoding a signal of a channel output by the transport decoder and converting it into an analog signal, an output means for outputting a digital signal output by the transport decoder or an analog signal output by the decoder A digital broadcast receiving system comprising a receiving terminal device having a timer for making a program display reservation or a program recording reservation for digital broadcasting, and a system controller for controlling the operation of the tuner, the transport decoder and the output means, The timer and the system controller in the receiving terminal device set the tuner in the program display reservation or the program recording reservation before the start time of the program set in the program display reservation or the program recording reservation. A digital broadcast receiving system characterized by being set so as to select and output a transponder signal including a program channel. 2. A tuner for receiving digital broadcasting, selecting a signal of a predetermined transponder from the received digital broadcasting signal and outputting the signal, and selecting a signal of a predetermined channel from the signal of the predetermined transponder output by the tuner. Output decoder, a decoder for decoding a channel signal output by the transport decoder and converting it into an analog signal, and an output means for outputting a digital signal output by the transport decoder or an analog signal output by the decoder. And a receiving terminal device having a system controller for controlling the operations of the tuner, the transport decoder, and the output means, a recording unit for recording the output signal of the receiving terminal device, a timer for making a program recording reservation for digital broadcasting, and Recording section In a digital broadcast recording system including a recording device having a system controller for controlling the operation of the system, the system controller in the receiving terminal device, the timer and the system controller in the recording device are set in the program display reservation or the program recording reservation. The tuner is set to select and output the signal of the transponder including the channel of the program set in the program display reservation or the program recording reservation before the recording start time that is set. Characteristic digital broadcast recording system.