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1. 发明专利

JPH07245735A REAR PROJECTION IMAGE DISPLAY DEVICE 失效
公开(公告)号：JPH07245735A
公开(公告)日：1995-09-19
申请号：JP377395
申请日：1995-01-13
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： YOSHIKAWA HIROKI , YOSHIDA TAKAHIKO , WADA KIYOSHI , MORI SHIGERU , OSAWA ATSUO , HIRATA KOJI , OISHI SATORU , WATANABE TOSHIMITSU , SUSO HIROSHI , YOKOYAMA YOSHIMASA , TAKAHASHI AKIRA , KOMATSU YASUHIKO , MATSUMURA YOSHINORI , NAKAGAWA KAZUNARI , OZEKI KOUSUKE , FURUI MAKI , KUBO NAOKO , SHIMADA TSUTOMU
IPC分类号： G02B13/18 , G03B21/10 , G03B21/16 , G03B21/28 , G03B21/62 , H04N5/64 , H04N5/74
摘要： PURPOSE:To install a display device while its rear side is closely in contact with a wall face by specifying an aspect ratio of a transmissive screen, a screen size and a depth of a case so as to reduce a space for installation. CONSTITUTION:This device is provided with a rear projection image display device 1 and a transmissive screen 7 being a screen of the rear projection image display device 1. The aspect ratio of the transmissive screen 7 is nearly 16:9 and the screen size is 33 inches or over and 40 inches or below, or the aspect ratio of the transmissive screen 7 is selected to be nearly 4:3 and the screen size is 36 inches or over and 40 inches or below and the depth of the case is selected to be 400mm or below. Moreover, vent holes for heat dissipation provided on the rear of the case of the device are formed to be inside a maximum depth of the case. Furthermore, the heat generating parts of the device are divided into parts cooled by natural convection and parts cooled by forced convection.

2. 发明专利

JP2001186439A TELEVISION RECEIVER 失效
公开(公告)号：JP2001186439A
公开(公告)日：2001-07-06
申请号：JP2000334920
申请日：2000-10-30
申请人： HITACHI LTD
发明人： YAMAGISHI YUTAKA , ITAGAKI TSUGIO , YAMAKUMA NAOTO , FURUI MAKI , KUBO NAOKO , ABE SHIZUE
IPC分类号： H04N5/00 , H04N5/44 , H04N5/45
摘要： PROBLEM TO BE SOLVED: To provide a television receiver that can select a channel while confirming contents of programs of other station (a component program on the different channel) in real time. SOLUTION: The television receiver is provided with a mode changeover means that selects an ordinary mode where a video image corresponding to single video information is displayed or a multi-screen mode where video images corresponding to a plurality of different video image information sets are displayed on one screen while being separated into a plurality of display areas, an identification display means that visibly identifies a display area selected among a plurality of the display areas from the other display areas in the multiple-screen mode, and a moving picture display means that displays the video image on the display area visibly selected from the other display areas at least by the identification display means in a moving picture. The mode changeover means selects the ordinary mode from the multi-screen mode based on a confirmation operation, the video image having been displayed in the moving picture form is displayed in the ordinary mode after the changeover with the moving picture display means before the confirmation operation.

3. 发明专利

JP2003270722A Rear projection type image display apparatus 有权
标题翻译：后投影类型图像显示设备
公开(公告)号：JP2003270722A
公开(公告)日：2003-09-25
申请号：JP2003016871
申请日：2003-01-27
申请人： Hitachi Advanced Digital Inc , Hitachi Ltd , 株式会社日立アドバンストデジタル , 株式会社日立製作所
发明人： YOSHIKAWA HIROKI , YOSHIDA TAKAHIKO , WADA KIYOSHI , MORI SHIGERU , OSAWA ATSUO , HIRATA KOJI , OISHI SATORU , WATANABE TOSHIMITSU , SUSO HIROSHI , YOKOYAMA YOSHIMASA , TAKAHASHI AKIRA , KOMATSU YASUHIKO , MATSUMURA YOSHINORI , NAKAGAWA KAZUNARI , OZEKI KOUSUKE , FURUI MAKI , KUBO NAOKO , SHIMADA TSUTOMU
IPC分类号： G02F1/13 , G02F1/1335 , G03B21/00 , G03B21/10 , G03B21/14 , G03B21/16 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide a rear projection type display apparatus which requires only a narrow space for installation and can be installed on a wall surface without a gap when being installed along the wall and can be received deep into a corner as the whole when being installed at the corner. SOLUTION: In the rear projection type image display apparatus, the projection distance of a projection lens is shortened, and a density of mounting of parts relating an optical system and an electric system is made higher. Furthermore, a width of a rear portion of a housing is reduced rearwards at any portion from the upper portion to the lower portion thereof, and the lower portion of a back cover is depressed inwards. COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种后投影式显示装置，其仅需要较小的安装空间，并且当沿壁安装时可以在没有间隙的情况下安装在壁表面上并且可以被深入地接收到角落中作为整个安装在拐角处。解决方案：在后投影型图像显示装置中，投影透镜的投影距离缩短，并且使与光学系统和电气系统相关的部件的安装密度更高。此外，壳体的后部的宽度在从上部到下部的任何部分处向后减小，并且后盖的下部向内凹陷。版权所有（C）2003，JPO

4. 发明专利

JPH0965229A TELEVISION RECEIVER 失效
公开(公告)号：JPH0965229A
公开(公告)日：1997-03-07
申请号：JP21700695
申请日：1995-08-25
申请人： HITACHI LTD
发明人： NAKAGAKI NOBUFUMI , FURUI MAKI , KUBO NAOKO , KAMOGAWA KOJI
IPC分类号： H04N5/445
摘要： PROBLEM TO BE SOLVED: To facilitate the operation required for a television receiver by providing a graphic display means displaying information from a central processing means onto a screen and a teletext information processing means converting the teletext information into a television signal and outputting the signal to the television receiver. SOLUTION: An RF signal received from an RF signal input terminal 106 is demodulated and the result is given to a 1st signal changeover circuit 109. The circuit 109 selects a signal outputted from a tuner 107 or a signal received from a video input terminal. A signal compression circuit 111 reduces the signal. The reduced signal is given to a 2nd signal changeover circuit 112 and two signals or over are synthesized on a same screen. On the other hand, the signal outputted from the circuit 109 is given to a teletext information processing circuit 114, which decodes teletext information multiplexed on a prescribed area of an input signal and provides an output. The decoded teletext information is outputted on a screen of a cathode ray tube 113.

5. 发明专利

JPH11146300A TELEVISION RECEIVER 失效
公开(公告)号：JPH11146300A
公开(公告)日：1999-05-28
申请号：JP25484298
申请日：1998-09-09
申请人： HITACHI LTD
发明人： YAMAGISHI YUTAKA , ITAGAKI TSUGIO , YAMAKUMA NAOTO , FURUI MAKI , KUBO NAOKO , ABE SHIZUE
IPC分类号： H04N5/445 , H04N5/45
摘要： PROBLEM TO BE SOLVED: To perform channel selection, confirming contents of other station programs (competing program on a different channel) in real time by displaying video in a display area that is at least designated with a cursor in moving images among plural display areas in a multi-image mode. SOLUTION: This television receiver has a normal mode and a multi-image mode and shows at least an image in a display area that is designated by a cursor among plural display areas in the multi-image mode in a moving image. Also, it tunes into video corresponding video information in a display area which is designated to the display area instructed by the cursor at least as a condition. With such a configuration, because video of a program a user wants to view (tune in to) becomes moving images from still images, it is possible to grasp content of a desired program in real time and also to grasp rough content although it is a still image about other programs.

6. 发明专利

JPH05328244A CHANNEL SELECTION DEVICE FOR TELEVISION RECEIVER 失效
公开(公告)号：JPH05328244A
公开(公告)日：1993-12-10
申请号：JP12853592
申请日：1992-05-21
申请人： HITACHI LTD
发明人： YAMAGISHI YUTAKA , ITAGAKI TSUGIO , YAMAKUMA NAOTO , FURUI MAKI , KUBO NAOKO , ABE SHIZUE
IPC分类号： H04N5/44 , H04N5/445 , H04N5/45
摘要： PURPOSE:To provide the channel selection device for a television receiver by which channel selection is easily implemented while confirming simultaneously a video image content of other station. CONSTITUTION:In the channel selection of a television receiver, video images a-i of plural stations are reduced and displayed on a screen simultaneously through split, and after a cursor 1 displayed on the screen is moved, a station of a video image indicated by the cursor 1 is selected. Furthermore, a picture memory and two tuning systems are incorporated in the television receiver and the two tuning systems reduce video data of plural stations sequentially in the case of channel selection and sends the result to the picture memory and the data stored in the memory are displayed. Furthermore, the video image of two stations among video images of plural stations are displayed in real time as a motion picture and the moving pattern station is revised by the movement of the cursor displayed on the screen and after an object station is decided, the station is confirmed to make the channel selection complete. Thus, the channel selection is attained while confirming simultaneously the video image content of other station.

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