公开(公告)号：DE69831898D1

公开(公告)日：2005-11-24

申请号：DE69831898

申请日：1998-05-28

Applicant: SONY CORP

Inventor： IKEDA NOZOMU ,  OGINO AKIRA

IPC: H04N5/91 ,  G11B20/10 ,  H04N5/913 ,  H04N7/08 ,  H04N7/081

Abstract: Additional information is superimposed consistently while the disturbance of a picture due to excessive superimposition is suppressed. The device superimposes (14) a spectrally spread additional information on a video signal. Inverse spread processing is performed on the video signal, and an SS additional information detection means (11) detects whether additional information is superimposed already on the video signal. Based on the detection result performed by the additional information detection means (11), superimposition (14) of the spectrally spread signal supplied from the spectrally spread signal generation means on the video signal is controlled. A superimposition control method such as superimposition ON/OFF control, superimposition level control, or spread code string control is performed.

公开(公告)号：SG73545A1

公开(公告)日：2000-06-20

申请号：SG1998003066

申请日：1998-08-13

Applicant: SONY CORP

Inventor： IKEDA NOZOMU ,  OGINO AKIRA ,  SUGITA TAKEHIRO ,  USUI TAKASHI

IPC: H04N19/60 ,  G11B20/00 ,  G11B20/10 ,  G11B23/28 ,  H03M7/30 ,  H04B1/707 ,  H04N5/913 ,  H04N7/08 ,  H04N7/081 ,  H04N19/467 ,  H04N19/625

Abstract: A spectrum spread signal spread by a spread code synchronized with a synchronous signal accompanying to an information signal is superimposed on the information signal and is then transmitted and the spectrum spread signal is then detected using the spread code for detection synchronized with the synchronous signal from the information signal on which the spectrum spread signal is superimposed. A value of the information signal on which the spectrum spread signal is superimposed is added or subtracted depending on the chip value of the relevant spread code for detection in each chip of the spread code for detection. The spectrum spread signal is detected by determining whether the added/subtracted value has exceeded the predetermined threshold value or not.

公开(公告)号：CA2289399A1

公开(公告)日：2000-05-20

申请号：CA2289399

申请日：1999-11-12

Applicant: SONY CORP

Inventor： OGINO AKIRA ,  IKEDA NOZOMU ,  MORIWAKI HISAYOSHI

IPC: H04N5/913 ,  G06T1/00 ,  G11B20/00 ,  H03M7/00 ,  H04J3/00 ,  H04L12/40 ,  H04L12/64 ,  H04N1/387 ,  H04N7/08 ,  H04N7/081 ,  H04N7/088 ,  H04L9/32

Abstract: An image signal to be outputted is divided into two areas or a first area and a second area. In an electronic watermarking information forming section (WM forming section), a spectrum spread signal (electronic watermarking information) is formed as the first additional information so as to be superposed on the first area of the image signal. The spectrum spread signal is superposed on the first area of the image signal by an electronic watermarking information superposing section (WM superposing section). Moreover, in the case where the image signal is recorded on a recording medium, for example, the second additional information is newly superposed on the second area of the image signal. Thus, deterioration of the information signal is suppressed at minimum, and first and second additional information are superposed on the information signal to be capable of transmitting the information signal.

公开(公告)号：EP2439653A4

公开(公告)日：2013-03-13

申请号：EP10799693

申请日：2010-06-08

Applicant: SONY CORP

Inventor： SAITO KATSU ,  ISOZAKI MASAAKI ,  ONOGI WATARU ,  ISHII KAZUO ,  IKEDA NOZOMU ,  TAKAHASHI YOSHIKAZU

IPC: G06F17/30

CPC classification number: G06F17/3053 ,  G06F17/30029 ,  G06F17/30053 ,  G06F17/30867

Abstract: The content recommendation system includes a user attribute information acquisition means for acquiring attribute information of a given user, a list acquisition means for acquiring at least one list from among lists of content sequentially generated over time on the basis of the attribute information of the given user acquired by the user attribute information acquisition means, a user preference information acquisition means for acquiring user preference information, which is feature information of content preferred by the given user, a content extraction means for extracting some content from content included in the list acquired by the list acquisition means on the basis of the user preference information acquired by the user preference information acquisition means, and a content presentation means for presenting the content extracted by the content extraction means to the given user.

公开(公告)号：DE69838860T2

公开(公告)日：2008-12-04

申请号：DE69838860

申请日：1998-01-13

Applicant: SONY CORP

Inventor： OGINO AKIRA ,  IKEDA NOZOMU

IPC: H04N5/913 ,  H04N21/2347 ,  H04N7/08 ,  H04N21/4405

Abstract: The PN code generation controlling means 15 produces a PN code generation clock signal PNCLK to generate the PN code of one chip to one vertical section and supplies this clock signal to an SS duplication preventing control signal generating means 16. The SS duplication preventing control signal generating means 16 generates the PN code of one chip to one vertical section depending on the PN code generation clock signal PNCLK and executes t he spectrum spread to the duplication preventing control signal S3 using this PN code to form the SS duplication preventing control signal S5. The SS duplication preventing control signal S5 is superimposed to the image signal and is then output. Thereby, elimination and deterioration of the additional information which has been spectrum spread and is then superimposed into the image signal can be prevented to surely provide the additional information superimposed to the image signal.

公开(公告)号：DE69838860D1

公开(公告)日：2008-01-31

申请号：DE69838860

申请日：1998-01-13

Applicant: SONY CORP

Inventor： OGINO AKIRA ,  IKEDA NOZOMU

IPC: H04N5/913 ,  H04N21/2347 ,  H04N7/08 ,  H04N21/4405

Abstract: The PN code generation controlling means 15 produces a PN code generation clock signal PNCLK to generate the PN code of one chip to one vertical section and supplies this clock signal to an SS duplication preventing control signal generating means 16. The SS duplication preventing control signal generating means 16 generates the PN code of one chip to one vertical section depending on the PN code generation clock signal PNCLK and executes t he spectrum spread to the duplication preventing control signal S3 using this PN code to form the SS duplication preventing control signal S5. The SS duplication preventing control signal S5 is superimposed to the image signal and is then output. Thereby, elimination and deterioration of the additional information which has been spectrum spread and is then superimposed into the image signal can be prevented to surely provide the additional information superimposed to the image signal.

公开(公告)号：CA2245765A1

公开(公告)日：1999-03-01

申请号：CA2245765

申请日：1998-08-25

Applicant: SONY CORP

Inventor： KOHASHI TAKASHI ,  MORIWAKI HISAYOSHI ,  KIMURA YUJI ,  OGINO AKIRA ,  IKEDA NOZOMU

IPC: G11B20/10 ,  H03M7/30 ,  H04N5/913 ,  H04N9/804 ,  H04B1/69 ,  H04N7/08 ,  H04N7/50

Abstract: Video signals are converted into one or more blocks for each predetermined unit amount of data, and a DCT process is performed in this block unit to convert the video signal from a time-base area signal to a DCT coefficient in a frequency area for data compression. As regards additional information consisting of spread spectrum signals, 1 chip of the spread spectrum signal is allocated to each block of the video signal or to each plural blocks, and the additional information is superimposed on the video signal as a constant level corresponding to the chip value for transmission. The video signal on which the additional information consisting of the spread spectrum signal transmitted has been superimposed is received, and from this received signal, the DC component of the DCT coefficient is extracted. Inverse spread process is performed for the DC component of the DCT coefficient extracted to detect the additional information.

公开(公告)号：CA2245433A1

公开(公告)日：1999-03-01

申请号：CA2245433

申请日：1998-08-24

Applicant: SONY CORP

Inventor： KIMURA YUJI ,  KOHASHI TAKASHI ,  MORIWAKI HISAYOSHI ,  IKEDA NOZOMU ,  OGINO AKIRA

IPC: H04N5/765 ,  G06F21/10 ,  H04N1/387 ,  H04N5/781 ,  H04N5/91 ,  H04N5/913 ,  H04N7/08 ,  H04N7/081 ,  H04N19/00 ,  H04N5/04 ,  H04B1/69

Abstract: An additional information signal is superimposed on a video signal at a very low level so that it does not stand out on the reproduced image. Spectral spreading code sequences are generated corresponding to different predetermined parts of the video signal. Bit information signals of the additional information signal comprising plural bits are spectrally spread by the spreading codes to generate spectrally spread bit information signals corresponding to the plural bits. The spectrally spread bit information signals are superimposed on corresponding different predetermined parts of the video signal. As high priority bit information signals of the spectrally spread additional information signal are superimposed on high priority parts of the video signal, high priority information in the additional information can be protected even if the video signal is modified.

公开(公告)号：CA2238732A1

公开(公告)日：1998-12-05

申请号：CA2238732

申请日：1998-05-27

Applicant: SONY CORP

Inventor： SUGITA TAKEHIRO ,  OGINO AKIRA ,  IKEDA NOZOMU

IPC: H04N5/91 ,  H04B1/707 ,  H04J13/00 ,  H04N5/913 ,  H04N7/08 ,  H04B1/69 ,  H04N5/765

Abstract: An additional information is spectrally spread and superimposed on a video signal over a plurality of fields, and the superimposed additional information is detected easily. A time code information is spectrally spread using the first spectrally spreading code string synchronous to the video signal, and the spectral spread signal of the time code information is superimposed on the video signal. An additional information is spectrally spread using the second spectrally spreading code string generated synchronously to the sync signal of the video signal and having a different period or different content corresponding to the time code information, and the spectral spread signal of the additional information is superimposed on the video signal.

公开(公告)号：CA2233891A1

公开(公告)日：1998-10-04

申请号：CA2233891

申请日：1998-04-02

Applicant: SONY CORP

Inventor： IKEDA NOZOMU ,  OGINO AKIRA ,  KOMATSUBARA MICHIMASA

IPC: H04N5/91 ,  H04N5/913 ,  H04N7/167 ,  H04N7/171 ,  H04N21/41 ,  H04N21/435 ,  H04N21/442

Abstract: A copy guard state detection unit detects whether copy guard is applied to the input video signal. If the copy guard state detection unit detects that copy guard is applied to the input video signal, a LED lights or blinks. Further if copy guard is applied to the input video signal and the recording device is in recording state or record waiting state, then the display information generation unit generates a display information for indicating that copy guard is applied to the input video signal, and the display information is displayed on a LCD.