专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPH02306681A SEMICONDUCTOR LASER DEVICE 失效
公开(公告)号：JPH02306681A
公开(公告)日：1990-12-20
申请号：JP12674089
申请日：1989-05-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MURATA SETSUKO , NISHIMURA KAZUTOSHI
IPC分类号： H01S5/00
摘要： PURPOSE:To reduce temperature rise of the light emitting unit of a semiconductor laser chip by adhering one electrode face of the chip oppositely to a submounting member, and coupling a predetermined region of a chip placing face side to another one side electrode of the chip via a metal member. CONSTITUTION:The face of one electrode 8 of a semiconductor laser chip 7 is adhered oppositely to a submounting member 4, and a predetermined region 10 of the member 4 at the side of the chip 7 placing face side is connected to another one electrode 9 of the chip via a metal member 11. Considerable part of the heat directed from the heat generating part of the chip 7 toward the opposite side to the submount is dissipated to the member 4, a heat sink 5 via the member 11. Thus, the temperature rise of the light emitting unit of the chip 7 can be lowered.

22. 发明专利

JPH0254975A PELTIER ELEMENT 失效
公开(公告)号：JPH0254975A
公开(公告)日：1990-02-23
申请号：JP20479388
申请日：1988-08-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAKADA HIROSHI , NISHIMURA KAZUTOSHI
IPC分类号： H01L23/38 , H01L35/30
摘要： PURPOSE:To enable a relative position error with a heat-radiation fin, especially a large slope, to be absorbed by forming the junction surface with an electrical heating element or a cooling element in spherical or cylindrical surface. CONSTITUTION:A cooling surface 3 of a Peltier element 2 joined to an electrical heating element 1 consisting of for example a semiconductor laser is formed in projecting spherical surface shape and the cooling surface 3 is joined to a flexible structure heat transfer body 5 fixed to the rear surface of a cooling fin 4 and a junction surface 7 in vecessel spherical surface shape formed by an improved heat-conduction type flexible film 6. By making the cooling surface 3 and the junction surface 7 to be in spherical surface in this manner, a large degree of three-dimensional freedom is given to the posture of the cooling fin 4 and a relative slant of the junction surface is greatly allowed.

23. 发明专利

JPS60173715A MAGNETIC TAPE DEVICE 失效
公开(公告)号：JPS60173715A
公开(公告)日：1985-09-07
申请号：JP2590484
申请日：1984-02-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANABE TAKANARI , NISHIMURA KAZUTOSHI , HOSOKAWA SHIGEFUMI
IPC分类号： G11B5/40 , G11B5/54 , G11B15/00 , G11B15/18
摘要： PURPOSE:To displace relative positions of a magnetic head and a magnetic tape to not only reduce wear of the magnetic head and the magnetic tape but also relax the attraction phenomenon between the magnetic head and the magnetic tape, by providing a displacement giving means which displaces the magnetic head, etc. CONSTITUTION:When a trigger signal (b) which is generated for recording or reproducing and indicates start of the magnetic tape is received, a displacement signal generating circuit 15 sends the second displacement signal (d) to a plunger 14. The plunger 14 drives a magnetic head 11 from the first position 16 to the second position 17 on a basis of the second displacement signal (d) so that the gap part of the magnetic head 11 is displaced to a minimum spacing position to the magnetic tape. Thus, the gap part of the magnetic head 11 is displaced to the minimum spacing position to the magnetic tape 13, and wear which is generated conventionally at a magnetic tape start time is not generated, and wear for magnetic tape start of the gap part of the magnetic head 11 and the magnetic tape 13 is avoided.

24. 发明专利

JPS60147915A MAGNETORESISTANCE EFFECT HEAD 失效
公开(公告)号：JPS60147915A
公开(公告)日：1985-08-05
申请号：JP255484
申请日：1984-01-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANABE TAKANARI , NISHIMURA KAZUTOSHI
IPC分类号： G11B5/11 , G11B5/115 , G11B5/39
摘要： PURPOSE:To attain reproduction with fidelity even at simultaneous recording/reproduction by joining both magnetic shield layers together at a position parted by prescribed length from a magnetoresistance effect element in its reproducing broadwise direction to decrease remarkably a cross-field noise. CONSTITUTION:A both-sided shield type magnetoresistance effect head enclosing a magnetoresistance effect element 23 is constituted of the 1st magnetic shield layer 21 and the 2nd magnetic shield layer 24. A part of leakage magnetic flux from a recording head passes also in this case through the 2nd magnetic shield layer 24 from the 1st magnetic shield layer 21. Most of the leakage magnetic flux, however, passes through the 2nd magnetic shield layer 24 via a magnetic shield joining part 28 from the 1st shield layer 21 and the leakage magnetic flux from the recording head passing through the insulation layer 22 is very less. Thus, the leakage magnetic flux from the recording head passing through a magnetic gap 27 in the insulation layer 22 is very less thereby reducing remarkably the cross field noise generated in a loop comprising a left conductor 25, the magnetoresistance effect element 23 and a right-side lead part 26 due to electromagnetic induction.

25. 发明专利

JPS60109010A THIN FILM REPRODUCING HEAD 失效
公开(公告)号：JPS60109010A
公开(公告)日：1985-06-14
申请号：JP21623883
申请日：1983-11-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANABE TAKANARI , NISHIMURA KAZUTOSHI
IPC分类号： G11B5/11 , G11B5/39
摘要： PURPOSE:To cancel crossfeed noise by each other and to perform reproduction with fidelity by allowing plural thin film conductors to cross each other at least once at specific length distance from a magneto-resistance element. CONSTITUTION:The magnet-resistance element 11 made of a ''Permalloy'' thin film, etc., is provided on a substrate 1 of glass, etc., and a left thin film conductor 12 and a right thin film conductor 13 cross each other at the specific length distance from the element 11 and extend in a crossing direction again. An insulating layer 15 is interposed between their intersection parts 14. Part of leak magnetic flux from a magnetic head passes through a magnetic gap 16 and the remainder of the magnetic flux passes through a magnetic gap 17. Crossfeed noise voltages developed at the gaps 16 and 17 are opposite in polarity and cancel each other, so faithful reproduction is performed correctly.

26. 发明专利

JPS60672A MAGNETIC TAPE DEVICE 失效
公开(公告)号：JPS60672A
公开(公告)日：1985-01-05
申请号：JP10588683
申请日：1983-06-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA KAZUTOSHI , HOSOKAWA SHIGEFUMI
IPC分类号： G11B20/18
摘要： PURPOSE:To improve the error recovery efficiency by reading retrial by dividing a data block into segments, writing the data together with an error check code of each segment, and revising only a segment data in error among preceding read blocks at the retrial of reading. CONSTITUTION:A block data fed from a host 1 is supplied to a write head 4 added with an error check code at each segment at a write section 3 and written in block unit on a magnetic tape 5. A data read in block unit from a reading head 6 is detected for error at each segment data at a reading section 7, stored temporarily in block unit and when any error exists, the data is read again in block unit. Further, only the data of the segment having the said error is used for error recovery among the data read agin. The error in other segments is neglected. Thus, the error recovery rate is improved.

27. 发明专利

JPS5665311A MAGNETIC RECORDING AND REPRODUCTION SYSTEM FOR DIGITAL INFORMATION 失效
公开(公告)号：JPS5665311A
公开(公告)日：1981-06-03
申请号：JP13903679
申请日：1979-10-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA KAZUTOSHI , HIRONO TADASHI
IPC分类号： H03M7/00 , G11B20/10 , G11B20/14 , H03M7/14 , H04L25/49
摘要： PURPOSE:To attain high line thickness without including a DC component in a recording current by converting a data word into a recording work having the absolute value of the integral value of a recording current less than a certain value. CONSTITUTION:The 1st data word is stored in three-bit buffer 3. Its output is inputted to encoder 4 together with output P of parity calculator 1 and output C of charge calculator 2. Encoder 4 is a logic circuit that stores a prescribed conversion table and generates recording words. Next, the output of encoder 4 is inputted to NRZI modulator 6, parity calculator 1 and charge calculator 2 via shift register 5. Then, NRZI modulator 6 converts bits of an input recording word into an NRZI recording current and sends it out to recording head 8 via rotary transformer 7. In this constitution, the data word is converted into a recording word having the absolute value of the integral value of the recording current less than a certain value to prevent a DC component from being included in the recording current and high line thickness can be attained.

28. 发明专利

JPS5410708A CODE TRANSFORMING SYSTEM 失效
公开(公告)号：JPS5410708A
公开(公告)日：1979-01-26
申请号：JP7631577
申请日：1977-06-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HIRONO TADASHI , NISHIMURA KAZUTOSHI , TAKANAMI SHIYUUICHI
IPC分类号： H04L1/00 , G06F11/08 , G11B5/09 , G11B20/14 , H03M5/12 , H03M5/14 , H03M7/00 , H03M7/30 , H03M13/51 , H04L7/00 , H04L7/02 , H04L25/49
摘要： PURPOSE:To reduce the reading error by selecting second binary signals from one or more second binary signals so that no three continuous one bit patterns may be produced.

29. 发明专利

JP2000059721A METHOD AND SYSTEM FOR RECORDING AND REPRODUCING REAL SPACE INPUT TYPE VIDEO IMAGE AND RECORDING MEDIUM RECORDED WITH THIS METHOD 失效
公开(公告)号：JP2000059721A
公开(公告)日：2000-02-25
申请号：JP22249798
申请日：1998-08-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANAKA KIYOSHI , SUZUKI TAKEMOTO , NISHIMURA KAZUTOSHI
IPC分类号： H04N5/91 , H04N5/76 , H04N5/92 , H04N7/24 , H04N19/00 , H04N19/44 , H04N19/463 , H04N19/65 , H04N19/70 , H04N19/89
摘要： PROBLEM TO BE SOLVED: To provide a method and system for recording and reproducing real- time input type video image where success or failure of video image recording is easily discriminated and whether or not a reproduced video image is a newest video image is discriminated and then it is reproduced. SOLUTION: An input video image is divided into prescribed recording units and the video image, a date from a calendar 202 and a segment number from a counter 203 are given to a coder 201, which encodes them as a segment. The segment is recorded on a recording medium 204 and read for reproduction and decoded by a decoder 206, which outputs the video image, the input date of the video image and the segment number. The date and the segment number obtained by decoding are given to an error detector 207, the quality of the segment recording is discriminated, based on a reproduction date from the calendar 202, and the segment number recorded at the date from the counter 203 and the result is outputted. A video processing unit 209 processes a video image from the decoder 206 according to the resulting quality of the recording of the segment and outputs a video image.

30. 发明专利

JPH11146014A DISTRIBUTION MULTIMEDIA SERVER DEVICE, METHOD FOR ACCESSING DISTRIBUTION MULTIMEDIA SERVER INFORMATION AND RECORDING MEDIUM RECORDING PROGRAM TO REALIZE THE METHOD 失效
公开(公告)号：JPH11146014A
公开(公告)日：1999-05-28
申请号：JP3563198
申请日：1998-02-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SASAKI CHIKARA , FUKAZAWA KATSUHIKO , SUZUKI HIDEMOTO , NISHIMURA KAZUTOSHI
IPC分类号： G06F13/00 , G06F15/16 , G06F15/173 , H04L12/70 , H04N7/16 , H04N7/173 , H04N21/218 , H04N21/231 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a distribution multimedia server device that requires no synchronization with other server module with an excellent operating efficiency of a terminal side network and to realize the access method that copses flexibly with the case that number of connection terminals is increased, a storage server module or a storage device is extended with less deterioration in the performance. SOLUTION: The device is provided with a plurality of communication server modules 311-31M that conduct communication with terminals, a plurality of storage server modules 321-332N that store multimedia information, and an inter-server-module network 33 that attains communication between an optional communication server module and an optional storage server module. The communication server modules 311-31M connection to an object terminal making multimedia information distribution and deliver sequentially a segment of a plurality of multimedia information sets transferred from a plurality of the storage server modules via the inter-server-module network 33 so as to avoid interruption of reproduction by a terminal.

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