JP2009212972A - Broadcast receiving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for performing video recording with an optimal resolution meeting a panel resolution. <P>SOLUTION: The invention relates to a broadcast receiving method in a broadcast receiver capable of performing outputting, with a plurality of resolutions, onto a panel having a display capability of a predetermined resolution. The broadcast receiving method is characterized in that the resolution of the panel is acquired, a resolution of a video-recording target program is determined, and video recording is carried out with an optimal resolution based on a result of the acquisition and a result of the determination. Furthermore, the broadcast receiving method is characterized in that a warning message is presented to prompt video recording with an optimal resolution in response to an instruction, from the outside, for video-recording broadcast of a resolution exceeding the resolution of the panel. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a broadcast receiving method such as a digital broadcast receiver.

  In recent years, not only in the world of TV broadcasting, the flow of digitization has been accelerating more and more and has had a great impact on our lives. Compression technology such as MPEG is progressing day by day, and it has become possible to easily transmit and receive large volumes of data that were previously unthinkable. In the world of TV broadcasting, users seeking high quality and high image quality have increased, and HDTV broadcasting has gained citizenship. However, not all products are compatible with HDTV broadcasting, and there is a mix of model lineups that take various applications into account. While the number of choices has increased, it has become difficult to accurately grasp the product specifications of the TV you have purchased, and there is a high possibility that you will perform incorrect (not meaningful) operations. For example, a TV with a WXGA panel may record a full HD program on the built-in HDD.

  Relatedly, in Patent Document 1, as an overview, in a monitor device having a display capability of a plurality of resolutions and an AV device capable of outputting to the monitor device at a plurality of resolutions, the resolution currently being displayed is acquired from the monitor device. There is described an AV device characterized in that it has means and outputs an operation screen in accordance with the acquired resolution.

However, there has been a problem that a technique for detecting the panel resolution and handling the optimum resolution according to the panel resolution is not disclosed.
JP 2007-89013 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a technique for recording video with an optimal resolution that matches the panel resolution.

  In order to solve the above problems, a broadcast receiving method of the present invention is a broadcast receiving method in a broadcast receiving apparatus capable of outputting at a plurality of resolutions to a panel having a display capability of a predetermined resolution. It acquires, determines the resolution of a program to be recorded, and executes recording at an optimal resolution from the acquisition result and the determination result.

  According to the present invention, it is possible to obtain a technique for recording with an optimal resolution in accordance with the panel resolution.

  Embodiments of the present invention will be described below.

A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a block diagram showing a configuration of an example of a digital broadcast receiving apparatus according to the present invention.
<Broadcast receiving device>
As shown in FIG. 1, a broadcast receiving apparatus A according to the present invention is a digital broadcast receiving apparatus that receives a digital broadcast as an example, and a channel selection circuit 12 to which a satellite antenna 11 is connected, and a selected digital broadcast. It has a demodulation / error correction circuit 13 that receives the output of the signal, and a packet separation circuit 14 that receives the output signal that has been subjected to demodulation processing and error correction processing. Further, it has an MPEG2 decoding circuit 15 to which a packet of a desired program separated by the packet separation circuit 14 is supplied, and this output is outputted to the output terminal 23. The output terminal 23 is connected to a display device 17 such as an external display.

  Further, the digital broadcast receiving apparatus A has a program signal demodulation circuit 18 to which EPG information including program information is supplied from the packet separation circuit 14, and a control unit 19 to which this demodulated output is supplied. Further, the communication unit 20 is connected to an external Internet and performs communication to acquire, for example, EPG information. The communication unit 20 may be a wired LAN (Local Area Network) or a wireless LAN, and may be a modem directly connected to a telephone line. The control unit 19 is connected to the operation unit 21 and the remote control reception unit 28 and is supplied with an operation signal. The remote control receiving unit 28 receives an operation signal E from a remote control device R described later. The control unit 19 further includes a ROM 25, a RAM 26, a CPU 27, and the like, and a code signal function setting unit 24 according to the present invention. The control unit 19 is connected to the units of the above-described units to control the entire operation. Yes. Further, an on-screen display OSD (On Screen Display) circuit 16 as a display signal generation unit is connected, and this output is superimposed on the output of the MPEG decoding circuit 15. The OSD circuit 16 generates EPG information from the control unit 19, icon display signals for displaying operation information, and the like.

  Further, the digital television apparatus B according to the present invention has a structure substantially the same as that of the broadcast receiving apparatus A shown in FIG. it can.

  The digital broadcast receiving apparatus A and the television apparatus B according to the present invention having such a configuration perform reception processing as described below. That is, the digital television broadcast data received by the satellite antenna 11 and frequency-converted is selected by the channel selection circuit 12 and subjected to demodulation processing and error correction processing by the demodulation / error correction circuit 13.

  The packet separation circuit 14 performs packet separation processing on the input transport stream, outputs a desired program packet to the MPEG2 decoding circuit 15, and outputs EPG information including program information to the program signal demodulation circuit 18. To do. The MPEG2 decoding circuit 15 decodes video / audio of the selected packet.

  On the other hand, the program signal demodulation circuit 18 demodulates the input EPG information and outputs the EPG information. Further, it is also possible to acquire EPG information from the Internet via the communication unit 20. One or both of these EPG information acquisition methods are performed depending on the setting. The demodulated EPG information or the EPG information acquired from the Internet is supplied to the control unit 19 for processing. The control unit 19 generates a desired program information display signal from the EPG information based on a command from the operation unit 21. Then, the data is output to an on-screen display OSD (On Screen Display) circuit 16 which is a display signal generation unit. The OSD circuit 16 synthesizes the program information display signal with the decoded video signal and outputs it to the output terminal 23.

<Processing operation of broadcast receiving device>
In the broadcast receiving apparatus having the above-described configuration, the characteristic processing operation of the present embodiment will be described below using a flowchart.
(First embodiment)
FIG. 2 is a processing flow for recording at an optimal resolution when recording a digital broadcast. The controller 19 plays a central role in controlling the operation.
When the user intends to record a program being viewed (step S201) or to make a reservation for recording a future program from the EPG (step S202), first, resolution information of the target program is acquired (step S203). If the target program is an SD broadcast (YES in step S204), recording execution / reservation is performed with the same resolution (step S205). If the target program is an HD broadcast (NO in step S204), the resolution information of the TV panel is further provided. Is acquired (step S206). In the case of a full HD compatible panel (YES in step S207), recording is executed / reserved at HD resolution (step S208), and in the case of other panels (NO in step S207), recording is executed / reserved at SD resolution. (Step S209).

Resolutions other than the SD resolution may be classified in more detail than just the HD resolution. For example, XGA, WXGA, etc.
By the way, the number of devices capable of recording a program in a storage means such as an HDD has increased, and the configurations have also varied. First, there is a form built into the device, and a device that records on an external HDD via USB or a dedicated LAN has been put into practical use.

When the display unit is externally attached or when the external HDD such as a DVD hybrid recorder has a control unit, the display unit can be connected by communication means such as CEC or DDC (Display Data Channel) in HDMI (High Definition Multimedia Interface). What is necessary is just to comprise so that the resolution can be obtained suitably. It is also preferable to prepare in advance a list of correspondence between the manufacturer model name of the display unit and the resolution as the substrate information with the control unit.

A second embodiment according to the present invention will be described with reference to FIGS. Description of the parts common to the first embodiment is omitted.
FIG. 3 is a processing flow that allows the user to make a final decision, instead of automatically determining and recording the optimum resolution.
The resolution information of the recording target program is acquired, and if it is SD broadcasting, recording execution and recording reservation are performed as it is. In the case of HD broadcasting, the resolution of the TV panel is acquired, and in the case of a full HD compatible panel, if the user specifies HD recording, HD recording is performed.If SD recording is specified, recording is performed at SD resolution. Schedule recording. If it is not a full HD-compatible panel and the user designates recording at HD resolution (YES in step S207b), a warning message is displayed (step S210) to prompt SD recording, but still HD resolution If it is desired to record with (step S208b). When the SD resolution is designated, the recording execution / reservation is performed with the SD resolution as it is (step S209b). Note that a warning message may use voice or the like.

  Resolutions other than the SD resolution may be classified in more detail than just the HD resolution. For example, XGA, WXGA, etc.

A third embodiment according to the present invention will be described with reference to FIGS. Description of parts common to the first and second embodiments is omitted.
FIG. 4 is a flow relating to processing for recording at both the SD resolution and the HD resolution when recording a digital broadcast.
Assuming the use of not only a receiver with a built-in HDD but also an external HDD, a recording method that depends only on the panel resolution of the TV broadcast receiver may not be appropriate. Also, if you have recorded in HD resolution but want to save it in SD resolution after viewing, it is time consuming and tedious to downconvert to SD resolution from the beginning again. In order to improve these problems, up-conversion is performed when recording an SD broadcast (step S205a), and down-conversion is performed when recording an HD broadcast (step S208c). To implement.

A fourth embodiment of the present invention will be described with reference to FIGS. Description of parts common to the first to third embodiments is omitted.
FIG. 5 is a flow in which the method described with reference to FIG. 4 is developed so that the user can select whether to perform down-conversion / up-conversion. Only when the conversion designation by the user using the remote controller R or the like is valid, parallel recording at the converted resolution is performed. The conversion designation may be one at a time, or may be set individually (in steps S505 and S508).

As an overview of these embodiments, when recording a digital broadcast program, the resolution information of the broadcast program is acquired and recorded at an optimal resolution according to the resolution of the panel. When the user tries to record at a resolution higher than the panel resolution, be careful. When recording an HD broadcast, an SD image is also recorded at the same time so that the user can select the one that matches the resolution of his / her TV.

According to the present embodiment, it is possible to execute recording at an optimal resolution without making the user make troublesome judgments. In addition, it is possible to flexibly support recording devices connected to various devices such as external HDDs by recording with both SD and HD resolution by up-converting or down-converting during recording. .

In addition, it is possible to reduce the user's effort when changing the recording resolution. The present invention relates to the presentation of a digital broadcast receiver that can automatically perform recording with optimum image quality and drawing with optimum image quality without making the user aware of it.

In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, it can implement in various modifications.
Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements according to different embodiments may be appropriately combined.

The block diagram which shows the structure of one Embodiment of the digital broadcast receiver which concerns on this invention. The flowchart regarding the recording method in the optimal resolution of the embodiment. The flowchart regarding the process in case the resolution which the user of the embodiment selected is injustice. The flowchart regarding the device at the time of recording HD broadcast of the embodiment. The flowchart which enabled the on / off of the function by the user in the embodiment.

Explanation of symbols

  A: Broadcast receiving apparatus, 11: Antenna, 12: Channel selection circuit, 13: Demodulation / error correction circuit, 14: Packet separation circuit, 15: MPEG decoding circuit, 16 ... OSD circuit, 17 ... Display device, 18 ... Program signal Demodulation circuit, 19 ... control unit, 21 ... operation unit, 23 ... output terminal, 24 ... code signal function setting unit, 25 ... ROM, 26 ... RAM, 27 ... CPU, 28 ... remote control reception unit (code signal reception), R ... remote control device.

Claims (5)

A broadcast receiving method in a broadcast receiving apparatus capable of outputting at a plurality of resolutions to a panel having a display capability of a predetermined resolution,
Get the resolution of the panel,
Determine the resolution of the program to be recorded,
A broadcast receiving method, wherein recording is performed at an optimum resolution from the acquisition result and the determination result.   The broadcast receiving method according to claim 1, wherein a warning message for prompting recording at an optimum resolution is displayed in response to an instruction from the outside for recording a broadcast having a resolution exceeding the resolution of the panel.   2. The broadcast receiving method according to claim 1, wherein when an HD broadcast is recorded, an SD image obtained by down-converting the HD broadcast is also recorded.   2. The broadcast receiving method according to claim 1, wherein when recording an SD broadcast, an HD image obtained by up-converting the SD broadcast is also recorded.   The broadcast receiving method according to claim 1, further comprising a step of acquiring a resolution of an external panel.

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