专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JPH06169437A TELEVISION RECEIVER 失效
公开(公告)号：JPH06169437A
公开(公告)日：1994-06-14
申请号：JP31959892
申请日：1992-11-30
申请人： HITACHI LTD
发明人： BANDO YUMI , MORI TAKAYUKI , NAKAGAKI NOBUFUMI , HIRAHATA SHIGERU
IPC分类号： H04N5/14 , H04N5/44
摘要： PURPOSE:To always obtain the most satisfactory video state by adjusting a picture quality corresponding to the change of a video by using exact video information from an input video signal. CONSTITUTION:A noise detecting circuit 116 detects a noise from the input video signal. A low pass filter 114 changes a pass bland according to the output of the noise detecting circuit 116, and extracts a low frequency component from a luminance signal. A white peak detecting circuit 117, black peak detecting circuit 118, and mean luminance detecting circuit 119 detect a white peak, black peak, and mean luminance from the output signal of the low pass filter 114. A surrounding light detecting circuit 120 detects brightness at the surrounding of the receiver. A control circuit 121 controls an outline correcting circuit 105, video chroma circuit 107, and gamma correcting circuit 108 or the like based on the video information of the detected white peak, black peak, mean luminance, noise, and surrounding light.

12. 发明专利

JPH0559634B2 失效
公开(公告)号：JPH0559634B2
公开(公告)日：1993-08-31
申请号：JP20939481
申请日：1981-12-25
申请人： HITACHI LTD , HITACHI MICRO SYSTEM KK
发明人： OKADA YOSHINORI , NAKAGAWA HIMIO , FURUHATA MAKOTO , MORI TAKAYUKI
IPC分类号： H04N5/53 , H04N5/52 , H04N5/91

13. 发明专利

JPH04176206A LIMITER CIRCUIT 失效
公开(公告)号：JPH04176206A
公开(公告)日：1992-06-23
申请号：JP30234990
申请日：1990-11-09
申请人： HITACHI LTD
发明人： NAKAGAKI NOBUFUMI , MORI TAKAYUKI
IPC分类号： H04N5/21 , H03G11/02 , H04N9/64
摘要： PURPOSE:To change a limit level by inserting a DC power supply in series with each of two diodes and controlling a voltage of the DC power supply externally. CONSTITUTION:An anode of a diode 109 and a cathode of a diode 110 are connected to an input of an amplifier 112. Moreover, a negative pole of a variable DC power supply 108 is connected to a cathode of the diode 109 and a positive pole of a variable DC power supply 111 is connected to an anode of the diode 110, and the positive pole of the variable DC power supply 108 and the negative pole of the variable DC power supply 111 are connected to a positive terminal of a bias power supply 105. The DC voltage of the variable DC power supplies 108, 111 is controlled by a signal inputted from a limit level input terminal 102. Since the variable DC power supplies 108, 111 are subject to voltage control so that the variable output voltage is equal to each other, the positive and the negative limit levels are set symmetrically.

14. 发明专利

JPH0380776A NOISE REDUCTION CIRCUIT 失效
公开(公告)号：JPH0380776A
公开(公告)日：1991-04-05
申请号：JP21607389
申请日：1989-08-24
申请人： HITACHI LTD
发明人： MURATA TOSHINORI , KURITA TOSHIYUKI , NAKAGAKI NOBUFUMI , MORI TAKAYUKI
IPC分类号： H04N5/21
摘要： PURPOSE:To reduce a noise in an input signal for which a various kinds of noises are inputted and to keep balance in the blurring of an image by setting variably a reference value for the variable control of a gain relating value K in a non-correlation detecting means according to the magnitude of the noise measured with a noise measuring means. CONSTITUTION:The noise signal component of the output of a low-pass filter 13 is amplified at an amplifier circuit 16, and the envelope of the component is taken out at a detection circuit 17. Furthermore, a mean value is obtained by passing it through a low-pass filter and performing an integration processing, etc. Thereby, a non-correlation detection circuit 26 is controlled, and the reference value for the variable control of the gain relating value K at the circuit can be set at an appropriate one. Therefore, when a large number of noises are included in the input signal, it is possible to set a high noise reduction effect since the reference value itself at the non-correlation detection circuit 26 can be set higher. Meanwhile, when the noise is scarcely included in the input signal, the blurring of the image can be suppressed by limiting the quantity of noise reduction remarkably.

15. 发明专利

JPH01126091A TELEVISION RECEIVER 失效
公开(公告)号：JPH01126091A
公开(公告)日：1989-05-18
申请号：JP28324787
申请日：1987-11-11
申请人： HITACHI LTD
发明人： NAKAGAKI NOBUFUMI , MORI TAKAYUKI , KURITA TOSHIYUKI , MURATA TOSHINORI , NAKAGAWA HIMIO
IPC分类号： H04N9/73 , H04N9/64
摘要： PURPOSE:To expand the dynamic range of output by setting the direct current level of a video output amplifier with the aid of a control signal from an IC and executing the control of the direct current level outside of the IC. CONSTITUTION:A cut-off detection signal and a drive detection signal are inserted to a video signal by cut-off/drive detection signal insersion circuits 29-31. The video signal to which the respective detection signals are inserted is inputted to the output amplifier 117-119 after being gain-controlled by variable amplifiers 33, 37 and 41. The direct current level of the video signal inputted to the output amplifiers 117-119 is shifted by a signal obtained by comparing a voltage value detected by detection resistances 48-50 and voltage outputted by a cut-off level/drive level reference power source 101 with the aid of comparators 36, 40 and 44. The output of the output amplifiers 117-119 is supplied to a color cathode-ray tube 51 through output buffers 114-116.

16. 发明专利

JPS61152111A PRE-EMPHASIS CIRCUIT 失效
公开(公告)号：JPS61152111A
公开(公告)日：1986-07-10
申请号：JP27310384
申请日：1984-12-26
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： MASUBUCHI SHINICHI , YAMAMOTO MOROHISA , MORI TAKAYUKI
IPC分类号： H04B1/62 , G11B5/027 , G11B20/06 , H03G7/00
摘要： PURPOSE:To make a circuit suitable to an integrated circuit formation with simple circuit constitution by operating in following a limiter action characteristic, and comparing the output signal of the 1st amplifier circuit which is provided with a required frequency characteristic with its input signal so as to obtain a subtraction output. CONSTITUTION:In the amplifier circuit 1, transistors TRs Q1 and Q2 are connected to a differential pair, and the AC component of the input signal Vin is amplified. When the signal Vin is amplified and the output signal V0 can be obtained from some terminal of the emitter resistance R8 of a transistor TRQ5, an limiter action is carried out in the condition where a current i1 for flowing resistances R12 and R6 comes to i1(R12+R6)>0.7V. Accordingly when the output signal V0 is amplitude-limited when the input signal Vin exceeds the prescribed voltage level. The signal V0 is transmitted to transistors TRs Q6 and Q7 of the amplifier circuit 2 to obtain the subtraction output V2 from the difference of respective base voltages, and the output V2 is amplified by an adder circuit 3. Thus the pre-emphasis corresponding to the input signal Vin can be executed.

17. 发明专利

JPS5917784A Automatic gain control circuit 失效
标题翻译：自动增益控制电路
公开(公告)号：JPS5917784A
公开(公告)日：1984-01-30
申请号：JP12578782
申请日：1982-07-21
申请人： Hitachi Ltd , Hitachi Micro Comput Eng Ltd
发明人： OKADA YOSHINORI , NAKAGAWA HIMIO , FURUHATA MAKOTO , MORI TAKAYUKI
IPC分类号： H04N5/53 , H04N5/91
CPC分类号： H04N5/91
摘要： PURPOSE:To make it difficult to generate a malfunction when the pulse width of a synchronizing signal generated from a separating circuit is narrower than a prescribed value, by providing an LPF and a comparing amplifier between the synchronizing signal separating circuit and a delay pulse generator. CONSTITUTION:A synchronizing signal 11 generated from a synchronizing signal separating circuit 10 becomes a signal 29 through an LPF26. This signal 29 is compared with a voltage 30 of a reference voltage source 28 in a comparing amplifier 27, and a level higher than the voltage 30 is detected. Consequently, a synchronizing signal 31 which has the phase delayed somewhat but has no erroneous output is obtained from the amplifier 27. This synchronizing signal 31 is supplied to a delay pulse generator 18, and the generator 18 generates pulses 20 only in the back porch time, and a normal signal to be detected is obtained. That is, even if an erroneous synchronizing signal is outputted once to lock an AGC erroneously, a normal AGC operation is performed.
摘要翻译：目的：通过在同步信号分离电路和延迟脉冲发生器之间设置LPF和比较放大器，当从分离电路产生的同步信号的脉冲宽度窄于规定值时，难以产生故障。构成：从同步信号分离电路10产生的同步信号11通过LPF26成为信号29。将该信号29与比较放大器27中的参考电压源28的电压30进行比较，并且检测到高于电压30的电平。因此，从放大器27获得具有稍微延迟但没有错误输出的相位的同步信号31.该同步信号31被提供给延迟脉冲发生器18，并且发生器18仅在后沿时间产生脉冲20 ，并且获得要检测的正常信号。也就是说，即使输出错误的同步信号一次来错误地锁定AGC，就执行正常的AGC操作。

18. 发明专利

JP2007067459A Information processing system 审中-公开
标题翻译：信息处理系统
公开(公告)号：JP2007067459A
公开(公告)日：2007-03-15
申请号：JP2005246950
申请日：2005-08-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TERADA KOICHI , SUZUKI MASATO , MORI TAKAYUKI , IWABUCHI KAZUNORI
IPC分类号： G06F13/00 , H04N5/44 , H04N7/173
摘要： PROBLEM TO BE SOLVED: To provide an information processing system capable of attaining both video viewing all over the screen with a high definition television resolution desired by a user and video viewing on partial display of the screen with a standard television resolution by means of a simple and inexpensive apparatus configuration. SOLUTION: Two systems of cables for interconnecting a PC 1 and a monitor 2 are provided, the one is a protected connection capable of transmitting an HDTV video image, and the other is a standard analog RGB connection, a switching section 201 of the monitor 2 switches either of the input video images on the basis of an instruction from software of the PC 1 and a display section 202 displays the selected video image. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种信息处理系统，其能够通过用户所期望的高清晰度电视分辨率在屏幕上实现视频观看，并且通过手段以标准电视分辨率部分显示屏幕来观看视频一种简单而便宜的设备配置。提供了用于互连PC 1和监视器2的两个电缆系统，一个是能够发送HDTV视频图像的保护连接，另一个是标准模拟RGB连接，切换部分201 监视器2基于来自PC1的软件的指令来切换输入视频图像中的任一个，并且显示部分202显示所选择的视频图像。版权所有（C）2007，JPO＆INPIT

19. 发明专利

JP2001028737A INFORMATION RECEPTION DEVICE AND INFORMATION PROCESSING METHOD 失效
公开(公告)号：JP2001028737A
公开(公告)日：2001-01-30
申请号：JP19833699
申请日：1999-07-13
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： HARATANI ATSUSHI , NAKAGAKI NOBUFUMI , MORI TAKAYUKI , TAKESUE JUNICHI , YAMAGUCHI TADAHIRO , SUBE TADASHI , FURUI MAKI , SUZUKI HIROYUKI
IPC分类号： H04B1/16 , H04H20/00 , H04H20/28 , H04H60/47 , H04H60/72 , H04N5/445 , H04N7/025 , H04N7/03 , H04N7/035 , H04H1/00
摘要： PROBLEM TO BE SOLVED: To provide an information reception device showing plural contents as one content through the use of the contents of plural information transmission sources by extracting information signal source identification information from plural pieces of content information or index information. SOLUTION: An extraction circuit 1 extracts the program of a character broadcast and a standard content from a video signal (a) on which the character broadcast is overlapped. A data memory 2 stores the plural obtained programs, the standard content and a broadcast station name. A display memory 3 stores a decoded result. An output circuit 4 outputs the decoding result stored in the display memory 3. A controller 5 decodes the standard content and the broadcast station name, which are stored in the data memory 2, acquires the program name and the broadcast station name, which belong to a desired category, and stores a program list in the display memory 3. Thus, a desired data signal is selected from data signals where plural data signals are overlapped and transmission source data is extracted from the selected data signal. Sine the information transmission source is displayed, operability improves.

20. 发明专利

JP2000056751A DISPLAY SYSTEM OF SPECTACLE OBJECT 失效
公开(公告)号：JP2000056751A
公开(公告)日：2000-02-25
申请号：JP22423998
申请日：1998-08-07
申请人： HITACHI LTD
发明人： ISHIGURO MIKINE , MORI TAKAYUKI , HARATANI ATSUSHI , NAKAGAKI NOBUFUMI
IPC分类号： G09G5/08 , G06F3/00 , G06F3/048
摘要： PROBLEM TO BE SOLVED: To easily recognize a pointer display position by stressing the pointer when the pointer on a display screen is moved without depending upon the input from a pointing device. SOLUTION: When the pointer moves, whether this movement is carried out by a user's instruction or not is judged. When the pointer is moved to the position of the second pointer 23 by the internal software, etc., of the apparatus while the user does not carry out the input to the pointing device, the second pointer 23 is displayed in stress. The third pointer 24 is display at an ordinary size when the pointer is moved from the position of the second pointer 23 to the position of the third pointer 24 by the input that the user makes to the pointing device while the second pointer 23 is displayed in stress.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式