JP2000041197A - Television receiver - Google Patents

Television receiver

Info

Publication number
JP2000041197A
JP2000041197A JP10208922A JP20892298A JP2000041197A JP 2000041197 A JP2000041197 A JP 2000041197A JP 10208922 A JP10208922 A JP 10208922A JP 20892298 A JP20892298 A JP 20892298A JP 2000041197 A JP2000041197 A JP 2000041197A
Authority
JP
Japan
Prior art keywords
video
channel
television receiver
images
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10208922A
Other languages
Japanese (ja)
Inventor
Kenichiro Yokoyama
健一郎 横山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10208922A priority Critical patent/JP2000041197A/en
Publication of JP2000041197A publication Critical patent/JP2000041197A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To shorten the image breaking time that is caused when the channels are switched and to attain the smooth switching of channels by adding a storage to a TV receiver to store the video still pictures on plural screens and displaying the stored images before broadcasted images are actually outputted on screen in a channel switching mode. SOLUTION: In a channel switching mode, the channels are switched at a demodulating part 1 and by a video decoder 2. However, these channel switching operations require their processing time and a long time is needed to output the images after the channels are switched. Thereby, a changeover SW 5 is switched to display the images by using the data stored in an image memory 3 while the images are processed for outputting at the part 1 and via the decoder 2. The different images can be displayed on every channel as long as plural images are stored. Thus, it's possible to shorten the image blank time and to perform the smooth channel changing operations.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、デジタル放送対応
のテレビジョン受信機に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver compatible with digital broadcasting.

【0002】[0002]

【従来の技術】デジタル放送では映像がMPEG2で送
られてくるが、MPEG2はその仕組み上、従来のアナ
ログ放送と比較して、映像データをデコード始めてから
実際に映像が出画するまでに時間がかかる。したがっ
て、チャンネル切り替え時等で映像を新たにデコード始
める場合に映像出画が遅くなってしまうという問題点が
ある。また、従来のアナログ放送用の、ラスターブラン
キング回路としては特開昭57-17277号に記載されたもの
等が知られているが、この方式などはアナログ放送方式
を前提としているため、デジタル放送の場合には効果が
得られない。
2. Description of the Related Art In digital broadcasting, video is transmitted in MPEG2. Due to the mechanism of MPEG2, compared to conventional analog broadcasting, the time from the start of decoding video data to the actual output of video is reduced. Take it. Therefore, there is a problem in that video output is delayed when video is newly decoded at the time of channel switching or the like. As a conventional raster blanking circuit for analog broadcasting, a circuit described in Japanese Patent Application Laid-Open No. 57-17277 is known, but since this method is based on the analog broadcasting method, it is not possible to use digital broadcasting. In this case, no effect is obtained.

【0003】[0003]

【発明の解決しようとする課題】従来のアナログ放送方
式の場合、映像のデコード自体は瞬時に行われており、
回路のアナログ的な挙動をミューティングすることによ
って比較的スムーズなチャンネル切り替え等を行うこと
ができた。しかしながら、デジタル放送の場合、映像デ
コード自体に時間がかかるので、そのことによる出画遅
延が長くスムーズなチャンネル切り替えが行えない。従
って、チャンネル切り替え時間が遅くザッピングのよう
なテレビの見方がやりにくいなどという問題点があっ
た。
In the case of the conventional analog broadcasting system, decoding of the video itself is performed instantaneously.
Muting the analog behavior of the circuit enabled relatively smooth channel switching and the like. However, in the case of digital broadcasting, since video decoding itself takes time, the delay in image output is long and channel switching cannot be performed smoothly. Accordingly, there has been a problem that the channel switching time is slow and it is difficult to view the television such as zapping.

【0004】[0004]

【課題を解決するための手段】前記課題を解決するため
に、本発明はテレビジョン受信機に映像の静止画を複数
画面記憶する記憶装置をもたせ、チャンネル切り替え時
に実際に放送が出画するまでに記憶していた画像の表示
を行うことによってスムーズなチャンネル切り替えを行
うことを特徴としている。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a television receiver with a storage device for storing a plurality of screens of still images of a video, until a broadcast is actually output when a channel is switched. The feature is that the channel is smoothly switched by displaying the image stored in the channel.

【0005】本発明により、チャンネル切り替え時の映
像がとぎれる状態で、記憶していた静止画を表示するこ
とによってチャンネル切り替え時の映像がとぎれ時間を
短縮、スムーズなチャンネル切り替えを行う効果を得る
ことができる。
According to the present invention, the stored still image is displayed in a state where the video at the time of channel switching is interrupted, thereby shortening the time at which the video at the time of channel switching is interrupted and achieving the effect of smooth channel switching. it can.

【0006】[0006]

【発明の実施の形態】本発明の請求項1に記載の発明
は、デジタル放送対応テレビジョン受信機において、チ
ャンネル切り替え時に映像がとぎれる場合における映像
出画処理方法およびその装置についてのものであり、チ
ャンネル切り替え時に映像デコード中によろ映像のと切
れを補いスムーズなチャンネル切り替えを行うという作
用を有する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention relates to a method and apparatus for processing a video output when a video is interrupted at the time of channel switching in a digital broadcast compatible television receiver. This has the effect of smoothing out video breaks during video decoding at the time of channel switching and performing smooth channel switching.

【0007】つぎに、本発明の請求項2に記載の発明
は、デジタル放送対応テレビジョン受信機において、映
像の静止画を複数画面記憶する記憶装置をもつもので、
チャンネル切り替え時の映像がとぎれる状態で、記憶し
ていた静止画を表示することによって、チャンネル切り
替え時の映像のとぎれ時間を短縮するという作用を有す
る。
According to a second aspect of the present invention, there is provided a digital broadcast compatible television receiver having a storage device for storing a plurality of screens of video still images.
By displaying the stored still image in a state in which the video at the time of channel switching is interrupted, there is an effect that the time at which the video is interrupted at the time of channel switching is reduced.

【0008】つぎに、本発明の請求項3記載の発明は、
デジタル放送対応テレビジョン受信機において、映像デ
コーダからの画像データを複数画面記憶することがでる
記憶装置をもち、チャンネル毎の最後の映像を静止画記
憶領域に記憶しておき、チャンネル切り替え時の映像が
とぎれる状態で、静止画記憶領域に記憶していたチャン
ネル変更先での最後の映像にみた映像を表示する機能を
もつもので、チャンネル切り替え時の映像がとぎれ時間
を短縮するという作用を有する。
Next, the invention according to claim 3 of the present invention provides:
A digital broadcast compatible television receiver has a storage device capable of storing a plurality of screens of image data from a video decoder. The last video for each channel is stored in a still image storage area, and the video at the time of channel switching is stored. In the state where the video is interrupted, the video has the function of displaying the video seen in the last video at the channel change destination stored in the still image storage area, and has the effect of shortening the video break time when switching channels.

【0009】つぎに、本発明の請求項4記載の発明は、
デジタル放送対応テレビジョン受信機において、複数の
映像デコーダからの画像データを記憶する記憶装置をも
ち、現在視聴している以外のチャンネの画像データを使
用されていないデコーダによりあらかじめデコードして
画像を記憶しておくことにより、チャンネル切り替え時
の映像がとぎれ時間を短縮する作用を有する。
Next, the invention according to claim 4 of the present invention provides
A digital broadcast compatible television receiver has a storage device for storing image data from a plurality of video decoders, and stores image data by previously decoding image data of channels other than the currently viewed channel by an unused decoder. By doing so, it has the effect of shortening the time at which the video at the time of channel switching is interrupted.

【0010】(実施の形態1)以下に、本発明の請求項
1および請求項2に記載された発明の実施の形態につい
て、図1を参照しながら説明する。
(Embodiment 1) An embodiment of the present invention described in claims 1 and 2 of the present invention will be described below with reference to FIG.

【0011】図1は本発明の実施の形態1におけるテレ
ビジョン受信機のブロック構成図を示す。図1におい
て、復調部1はデジタル放送のトランスポンダの選択、
復調を行いトランスポートストリーム(以下TS)を出
力する。映像デコーダ2ではTS信号より選局、映像の
デコードを行う。D/Aコンバータ4でデコードされた
映像信号がD/A変換されてアナログ映像信号32とし
て出力される。
FIG. 1 shows a block diagram of a television receiver according to Embodiment 1 of the present invention. In FIG. 1, a demodulation unit 1 selects a digital broadcast transponder,
It demodulates and outputs a transport stream (hereinafter, TS). The video decoder 2 selects a channel from the TS signal and decodes the video. The video signal decoded by the D / A converter 4 is D / A converted and output as an analog video signal 32.

【0012】チャンネル切り替え時には、復調部1での
切り替えや映像デコーダ2での切り替えが行われるがと
もに処理時間がかかり、チャンネル切り替え動作を行っ
てから映像が出画するまで時間がかかる。そこで、復調
不や映像デコーダ2で出画処理を行っている間は切り替
えSWを切り替えて画像メモリー3のデータを使用して
映像を表示する。複数の画像をメモリしておけばチャン
ネルごとに異なった映像の表示も可能になる。
At the time of channel switching, switching by the demodulation unit 1 and switching by the video decoder 2 are performed, but both require processing time, and it takes time from when the channel switching operation is performed to when an image is output. Therefore, while the demodulation is not performed or the image decoder 2 is performing the image output processing, the switch SW is switched to display the image using the data in the image memory 3. If a plurality of images are stored in memory, different images can be displayed for each channel.

【0013】かかる構成によれば映像ブランク時間を減
らしてスムーズなチャンネル変更処理を行うことができ
る。
According to such a configuration, a smooth channel change process can be performed by reducing the video blanking time.

【0014】(実施の形態2)以下に、本発明の請求項
1および請求項3に記載された発明の実施の形態につい
て、図2を参照しながら説明する。
(Embodiment 2) An embodiment of the present invention described in claims 1 and 3 of the present invention will be described below with reference to FIG.

【0015】図2は本発明の実施の形態2におけるテレ
ビジョン受信機のブロック構成図を示す。図2の場合
は、実施の形態1の構成に加えて、映像デコーダ2から
画像メモリ3にデータの書き込みができる構成にしたも
のである。
FIG. 2 shows a block diagram of a television receiver according to a second embodiment of the present invention. In the case of FIG. 2, in addition to the configuration of the first embodiment, the configuration is such that data can be written from the video decoder 2 to the image memory 3.

【0016】映像デコーダ2でデコードされた画像デー
タ33を画像メモリに記憶しておき、映像がとぎれる状
態で切り替えSWを切り替えて画像メモリの内容を表示
する。記憶する画像は任意であるが、チャンネルを切り
替える直前の画像を記憶しておけば、画像を静止させな
がらチャネルを切り替えることができるのでスムーズな
チャンネル器換えを行うことができる。
The image data 33 decoded by the video decoder 2 is stored in the image memory, and the contents of the image memory are displayed by switching the switch SW while the video is interrupted. The image to be stored is arbitrary, but if the image immediately before switching the channel is stored, the channel can be switched while the image is still, so that a smooth channel change can be performed.

【0017】また、過去に見たチャンネルの最後の画像
を記憶しておき、あらかじめ選択先のチャンネルを表示
することも可能である。かかる構成によれば映像ブラン
ク時間を減らしてスムーズなチャンネル変更処理を行う
ことができる。
It is also possible to store the last image of the channel viewed in the past and display the channel to be selected in advance. According to such a configuration, a smooth channel change process can be performed by reducing the video blanking time.

【0018】(実施の形態3)以下に、本発明の請求項
1および請求項4に記載された発明の実施の形態につい
て、図3を参照しながら説明する。
(Embodiment 3) An embodiment of the present invention described in claims 1 and 4 of the present invention will be described below with reference to FIG.

【0019】図3は本発明の実施の形態3におけるテレ
ビジョン受信機のブロック構成図を示す。図3の場合
は、実施の形態2の構成で画像メモリへの画像メモリの
書き込みを複数の映像デコーダから行えるように変更し
たものである。
FIG. 3 shows a block diagram of a television receiver according to a third embodiment of the present invention. In the case of FIG. 3, the configuration of the second embodiment is modified such that writing of the image memory to the image memory can be performed from a plurality of video decoders.

【0020】画像メモリ3に対して映像デコーダ2と映
像デコーダ7から書き込みを行うことができる。映像デ
コーダ2の出力がD/Aコンバータ4に入力されている
間に映像デコーダ7によって他のチャンネルを巡回して
おき他チャンネルの最新の画像を画像メモリに蓄えてお
き、チャンネルが変更されたら既に蓄えられているチャ
ンネル変更先の画像を表示することによって、迅速にチ
ャンネルの情報を表示することができる。
Writing can be performed on the image memory 3 from the video decoder 2 and the video decoder 7. While the output of the video decoder 2 is being input to the D / A converter 4, the other channel is circulated by the video decoder 7 and the latest image of the other channel is stored in the image memory. By displaying the stored image of the channel change destination, it is possible to quickly display channel information.

【0021】また、チャンネルを連続して変更する場合
でも次々に蓄えておいた画像を表示することによってチ
ャンネル内容を迅速に表示することができる。かかる構
成によれば映像ブランク時間を減らしてスムーズなチャ
ンネル変更処理を行うことができる。
Even when the channel is changed continuously, the contents of the channel can be quickly displayed by displaying the images stored one after another. According to such a configuration, a smooth channel change process can be performed by reducing the video blanking time.

【0022】[0022]

【発明の効果】以上説明したように、本発明によれ
ば、、チャンネル切り替え時の映像がとぎれる状態で、
記憶していた静止画を表示することによって、チャンネ
ル切り替え時の映像がとぎれ時間を短縮することができ
る。
As described above, according to the present invention, in a state where the image at the time of channel switching is interrupted,
By displaying the stored still image, the time at which the image is interrupted when the channel is switched can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態1におけるテレビジョン受
信機のブロック構成図
FIG. 1 is a block diagram of a television receiver according to Embodiment 1 of the present invention.

【図2】本発明の実施の形態2におけるテレビジョン受
信機のブロック構成図
FIG. 2 is a block diagram of a television receiver according to a second embodiment of the present invention.

【図3】本発明の実施の形態3におけるテレビジョン受
信機のブロック構成図
FIG. 3 is a block diagram of a television receiver according to a third embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 復調部 2 映像デコーダ 3 画像メモリ 4 D/Aコンバータ 5 切り替えSW 6 復調部 7 映像デコーダ 31 トランスポートストリーム 32 アナログ映像信号 33 映像データ 34 映像データ DESCRIPTION OF SYMBOLS 1 Demodulation part 2 Video decoder 3 Image memory 4 D / A converter 5 Switching SW 6 Demodulation part 7 Video decoder 31 Transport stream 32 Analog video signal 33 Video data 34 Video data

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 デジタル放送対応テレビジョン受信機に
おいて、チャンネル切り替え時に映像がとぎれる時間を
短縮する機能を備えたことを特徴とするテレビジョン受
信機。
1. A television receiver compatible with digital broadcasting, wherein the television receiver has a function of shortening a time during which a video is interrupted when a channel is switched.
【請求項2】 デジタル放送対応テレビジョン受信機に
おいて、映像の静止画を複数画面記憶する記憶装置をも
ち、チャンネル切り替え時の映像がとぎれる状態で、記
憶していた静止画を表示することによって、チャンネル
切り替え時の映像のとぎれ時間を短縮することを特徴と
するテレビジョン受信機。
2. A digital broadcast compatible television receiver having a storage device for storing a plurality of screens of video still images, and displaying the stored still images in a state where the video is interrupted at the time of channel switching. A television receiver characterized in that the time during which a video is interrupted when switching channels is reduced.
【請求項3】 デジタル放送対応テレビジョン受信機に
おいて、映像デコーダからの画像データを複数画面記憶
することがでる記憶装置をもち、チャンネル毎の映像を
静止画記憶領域に記憶しておき、チャンネル切り替え時
の映像がとぎれる状態で、静止画記憶領域に記憶してい
たチャンネル変更先での最後の映像にみた映像を表示す
る機能をもち、チャンネル切り替え時の映像がとぎれ時
間を短縮することをを特徴とするテレビジョン受信機。
3. A television receiver compatible with digital broadcasting has a storage device capable of storing a plurality of screens of image data from a video decoder, storing images for each channel in a still image storage area, and switching channels. It has a function to display the video seen in the last video at the channel change destination stored in the still image storage area when the video at the time is interrupted, shortening the video break time when switching channels. Television receiver.
【請求項4】 デジタル放送対応テレビジョン受信機に
おいて、複数の映像デコーダからの画像データを記憶す
る記憶装置をもち、現在視聴している以外のチャンネの
画像データを使用されていないデコーダによりあらかじ
めデコードして画像を記憶しておくことによって、チャ
ンネル切り替え時の映像がとぎれ時間を短縮することを
を特徴とするテレビジョン受信機。
4. A television receiver compatible with digital broadcasting, which has a storage device for storing image data from a plurality of video decoders, and decodes image data of a channel other than the currently viewed channel by an unused decoder in advance. A television receiver characterized by shortening the time during which a picture is interrupted when a channel is switched by storing an image.
JP10208922A 1998-07-24 1998-07-24 Television receiver Pending JP2000041197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10208922A JP2000041197A (en) 1998-07-24 1998-07-24 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10208922A JP2000041197A (en) 1998-07-24 1998-07-24 Television receiver

Publications (1)

Publication Number Publication Date
JP2000041197A true JP2000041197A (en) 2000-02-08

Family

ID=16564357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10208922A Pending JP2000041197A (en) 1998-07-24 1998-07-24 Television receiver

Country Status (1)

Country Link
JP (1) JP2000041197A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002051325A (en) * 2000-08-02 2002-02-15 Nippon Telegr & Teleph Corp <Ntt> Digital broadcast image receiver and method therefor
JP2005277997A (en) * 2004-03-26 2005-10-06 Clarion Co Ltd Digital broadcasting receiver
JP2005295028A (en) * 2004-03-31 2005-10-20 Pioneer Electronic Corp Digital broadcast receiver and contents display method thereof
JP2006174209A (en) * 2004-12-17 2006-06-29 Sanyo Electric Co Ltd Digital broadcast receiving device
KR100598360B1 (en) 2005-02-14 2006-07-06 엘지전자 주식회사 Apparatus to reduce an image display delay time in channel conversion and method thereof
JP2006333412A (en) * 2005-05-30 2006-12-07 Sharp Corp Broadcast receiver, broadcast receiving method, broadcast receiving program and computer readable recording medium
JP2007043335A (en) * 2005-08-01 2007-02-15 Sanyo Electric Co Ltd Digital broadcast receiver
KR100722027B1 (en) 2005-10-28 2007-05-25 엘지전자 주식회사 Method and apparatus for processing an image of an image display device
WO2008149647A1 (en) 2007-05-30 2008-12-11 Sony Corporation Broadcast receiver and reproducing method
EP2101489A2 (en) 2008-03-11 2009-09-16 Vestel Elektronik Sanayi ve Ticaret A.S. Informative and commercial utilization of televisions
US7675530B2 (en) 2004-06-08 2010-03-09 Sony Corporation Moving-image reproduction apparatus, moving-image reproduction methods, programs and recording mediums
JP2010081275A (en) * 2008-09-26 2010-04-08 Nec Personal Products Co Ltd Information apparatus and program

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002051325A (en) * 2000-08-02 2002-02-15 Nippon Telegr & Teleph Corp <Ntt> Digital broadcast image receiver and method therefor
JP2005277997A (en) * 2004-03-26 2005-10-06 Clarion Co Ltd Digital broadcasting receiver
JP2005295028A (en) * 2004-03-31 2005-10-20 Pioneer Electronic Corp Digital broadcast receiver and contents display method thereof
US7675530B2 (en) 2004-06-08 2010-03-09 Sony Corporation Moving-image reproduction apparatus, moving-image reproduction methods, programs and recording mediums
JP2006174209A (en) * 2004-12-17 2006-06-29 Sanyo Electric Co Ltd Digital broadcast receiving device
JP4707385B2 (en) * 2004-12-17 2011-06-22 京セラ株式会社 Digital broadcast receiver
KR100598360B1 (en) 2005-02-14 2006-07-06 엘지전자 주식회사 Apparatus to reduce an image display delay time in channel conversion and method thereof
JP2006333412A (en) * 2005-05-30 2006-12-07 Sharp Corp Broadcast receiver, broadcast receiving method, broadcast receiving program and computer readable recording medium
JP2007043335A (en) * 2005-08-01 2007-02-15 Sanyo Electric Co Ltd Digital broadcast receiver
KR100722027B1 (en) 2005-10-28 2007-05-25 엘지전자 주식회사 Method and apparatus for processing an image of an image display device
WO2008149647A1 (en) 2007-05-30 2008-12-11 Sony Corporation Broadcast receiver and reproducing method
US8149339B2 (en) 2007-05-30 2012-04-03 Sony Corporation Broadcast receiving apparatus and reproduction processing method
EP2101489A2 (en) 2008-03-11 2009-09-16 Vestel Elektronik Sanayi ve Ticaret A.S. Informative and commercial utilization of televisions
JP2010081275A (en) * 2008-09-26 2010-04-08 Nec Personal Products Co Ltd Information apparatus and program

Similar Documents

Publication Publication Date Title
KR20020008013A (en) Image recording apparatus, image recording method and storage medium
JP2000041197A (en) Television receiver
US7782406B2 (en) Receiving apparatus and receiving method for channel switching in both digital and analog TV reception
JP2008092230A (en) Broadcast receiver and decoding method of broadcast receiver
JP3469705B2 (en) Decoding circuit for multiplexed video signal
JP2008098710A (en) Digital broadcast receiver
JP4553996B2 (en) Information reproducing apparatus and information reproducing method
JP3548113B2 (en) Receiver and image reproducing method
JP4277270B2 (en) Broadcast receiving apparatus, display control method, and display control program
KR100793757B1 (en) The broadcasting receiver for displaying various electronic program guide, and the method for controlling the same
JP2000013712A (en) Multi-picture display device
KR100432452B1 (en) Digital broadcast receiving device and digital broadcast receiving method
KR100393090B1 (en) Apparatus and method for channel-management of a set-top box
JP4552200B2 (en) Digital broadcast receiver
US20100171885A1 (en) Video Decoder System for Movable Application
JPH10322608A (en) Television receiver
KR100310045B1 (en) Digital tv system for storing video data
JP5920442B2 (en) Digital satellite broadcast receiving apparatus and receiving method
JP4375389B2 (en) Digital broadcast signal receiver
JP2009224920A (en) Digital television broadcast receiver
JP2007096407A (en) Digital broadcast receiver
JP2000287215A (en) Video decoder
JP2010246169A (en) Video signal display device, and video signal display method
KR100301831B1 (en) Apparatus for generating pciture in freeze-picture
KR100274212B1 (en) Advanced television system capable of the adaptive moving picture display of virtual channel and the channel selection method