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41. 发明专利

JPH0567931A POWER-AMPLIFIER MEANS FOR R.F. SIGNAL 失效
公开(公告)号：JPH0567931A
公开(公告)日：1993-03-19
申请号：JP5467892
申请日：1992-03-13
申请人： MARCONI GEC LTD
发明人： TEYUUDAA DEIBUITSUDO PAIKU
IPC分类号： H03F3/217 , H03C1/60 , H03F1/32 , H03F3/24 , H04B1/04
摘要： PURPOSE: To hold the source voltage of an R.F. power amplifier nearly constant by providing a pulse width modulator which operates in high-order pulse modulation mode and enabling it to operate in low-order single-sideband amplitude modulation mode. CONSTITUTION: According to an audio modulated signal for sending a control signal from a controller 4 to a pulse width modulator, pulses of an HT power source are supplied to an R.F. power amplifier 2 through a filter 3. The control signal varies the pulse width according to an audio input. To enable operation in low-order single-sideband amplitude modulation mode, the pulse width modulator 1 is controlled with a signal derived from the envelope 8 of a single-sideband modulated signal so that the source voltage of the R.F. power amplifier 2 is held almost constant.

42. 发明专利

JPH04298172A IMAGE FORMING SYSTEM 失效
公开(公告)号：JPH04298172A
公开(公告)日：1992-10-21
申请号：JP22615291
申请日：1991-09-05
申请人： MARCONI GEC LTD
发明人： ROBAATO KENEDEII MATSUKIYUUAN , AREN DEIBUITSUDO MATSUKURAUDO
IPC分类号： H04N3/09 , H04N5/33 , H04N5/349
摘要： PURPOSE: To provide a system with which a radiograph can be moved into the field of view of an observer in real time without requiring any complicated electronic device for interlace. CONSTITUTION: An imager is composed of a lens 31 for converging radiations onto a sensor array 32 and a chopper equipped with a block for refracting the radiations in different directions for the microscan of image on the sensor array 32. The chopper 4 is driven by a motor 34 for driving a polygon 37 as well. The sensor array is read line by line and is displayed on a linear array composed of an LED 36 so as to be watched as a complete two-dimensional image for the observer observing it through an eyepiece 38. This is caused by continuity in sight. The small face of polygon 37 is cut so as to compensate deviation caused by microscanning.

43. 发明专利

JPH04284493A LIQUID CRYSTAL DISPLAY 失效
公开(公告)号：JPH04284493A
公开(公告)日：1992-10-09
申请号：JP29761191
申请日：1991-10-18
申请人： MARCONI GEC LTD
发明人： AREN MOSURII , PATORITSUKU KORIN RANDORU
IPC分类号： G02F1/133 , G09G3/36
摘要： PURPOSE: To perform the interlacing of frame lines. CONSTITUTION: When driving the liquid crystal cell of a resistance coupling transistor type active matrix drive liquid crystal display, in a first field time, the horizontal columns N-1 and N+1 of the cells are sequentially driven by adding transistor ON pulses to horizontal column driving lines 10 and 12 and reference signals are sequentially impressed to horizontal column driving lines 11 and 13 corresponding to the horizontal columns N and N+2 so as to match the ON pulses for the horizontal column N-1 and the reference signals for the horizontal column N. Then, in a second field time, the horizontal columns N and N+1 of the cells are sequentially driven by adding the transistor ON pulses to the corresponding horizontal column driving lines and the reference signals are sequentially impressed to the horizontal column driving line 12 corresponding to the horizontal columns N+1 and N+3 so as to match the ON pulses for the horizontal column N and the reference signals for the horizontal column N+1.

44. 发明专利

JPH04245665A SEMICONDUCTOR INTEGRATED CIRCUIT STRUCTURE 失效
公开(公告)号：JPH04245665A
公开(公告)日：1992-09-02
申请号：JP25413191
申请日：1991-09-06
申请人： MARCONI GEC LTD
发明人： PIITAA HENRII SOORU , SUTEFUAN JIEIMUZU HOWAITO
IPC分类号： H01L21/3205 , H01L21/768 , H01L23/522
摘要： PURPOSE: To reduce the chip size by removing a part of a dielectric layer contiguous to a dielectric layer part beneath a conductive track along one fringe thereof thereby decreasing the mutual coupling capacitance between the conductive track and a first conductive region. CONSTITUTION: Dielectric layers 3, 6, 9, 12 are removed partially by etching to form an air gap 16 between conductive tracks 4, 7, 10 and 5, 8, 11 of vertical structure. Consequently, even if a fringe field 15 and a horizontal field 14 are present in the sections adjacent to the conductive tracks 4, 5, 7, 8, 10, 11 and between the conductive tracks 4, 5 and a basic body 1, these fields reside in the air having permittivity in the range of 3.5-4.0 times that of the dielectric layers 3, 6, 9, 12. According to the structure, stray capacitance can be reduced by a factor of 2 or more.

45. 发明专利

JPH04218497A GEOSTATIONARY SATELLITE 失效
公开(公告)号：JPH04218497A
公开(公告)日：1992-08-10
申请号：JP5361791
申请日：1991-02-27
申请人： MARCONI GEC LTD
发明人： RINDON BANFUIIRUDO
IPC分类号： B64G1/44 , B64G1/54 , B64G1/58
摘要： PURPOSE: To provide a geostationary satellite which places in a three-axis geostationary orbit and has a pair of solar panels extending therefrom, wherein the planes of the panel lying parallel to the axis of rotation of the satellite when in orbit. CONSTITUTION: This invention is characterized by solar panels 2 and 3 being offset with regard to the rotary axis of a geostationary satellite so as to provide masking from the sun's rays for the faces of the satellite on which the panels are mounted.

46. 发明专利

JPH03143105A ANTENNA ARRAY 失效
公开(公告)号：JPH03143105A
公开(公告)日：1991-06-18
申请号：JP22952890
申请日：1990-08-30
申请人： MARCONI GEC LTD
发明人： RICHIYAADO SUTANRII OOTON , POORU JIEIMUZU TEITSUTENSOO
IPC分类号： H01Q3/30 , H01Q3/26 , H01Q11/10 , H01Q21/22
摘要： PURPOSE: To exactly calibrate a transmission antenna array by deciding the position of one phase center of the antenna of array system based on a phase in the probe antenna of a signal transmitted from the antenna. CONSTITUTION: An antenna in the left hand of an array is excited by a transmitter Tx operated with known amplitude and frequency with a specific frequency, and the amplitude and phase of a signal received by probe antennas P1 and P3 are measured. Assuming that a frequency is radiated by a dipole 4, the phase of a signal in the P3 is compared with that of the transmitter. The phase of the signal received by the P1 is compared with that transmitted by the transmitter Tx afterwards, and this relative phase is compared with data in a processor again. A second error phase is calculated, and a secodn circular orbit can be attained. The cross-point of circles 6 and 7 can exactly indicate the position of the actual phase center of the frequency of the antenna.

47. 发明专利

JPH0396019A ANALOG/DIGITAL CONVERTER 失效
公开(公告)号：JPH0396019A
公开(公告)日：1991-04-22
申请号：JP13690690
申请日：1990-05-25
申请人： MARCONI GEC LTD
发明人： ANDORIYUU MAAKU SAASUTON
IPC分类号： H03M3/04 , H03M3/02
摘要： PURPOSE: To obtain an output having high linearity and high resolution by allowing at least some of zero crossings of responses corresponding to only one feedback pulse from a band-pass filter means to coincide with a sampling instant. CONSTITUTION: An analog input to band-pass filters H1(s), H2(s) is sampled by a quantizer for generating a digital data output. A pulse string is delayed only by 1.5 hours through a delay circuit 21 and counted by a clock, operating synchronously with a clock 2. A feedback pulse is advanced or delayed with respect to a data pulse, and finally the zero crossing of an open loop impulse response is allowed to coincide with the sampling instant.

48. 发明专利

JPH01114134A RING-TYPE LOCAL AREA NETWORK 失效
公开(公告)号：JPH01114134A
公开(公告)日：1989-05-02
申请号：JP18275188
申请日：1988-07-21
申请人： MARCONI GEC LTD
发明人： JIYON RATSUSERU
IPC分类号： H04L12/24 , H04L12/26 , H04L12/43 , H04L12/433
摘要： PURPOSE: To obtain a network provided with a multi-node ring useful for transmitting a digital sound by providing each node with a means for canceling all packets transmitted from the node after one circulation of a ring. CONSTITUTION: Series data transfer between nodes is executed through a multi- node optical fiber 2 and an electric-optical converter 3 constitutes an interface. Each node is provided with two shift registers, the length of each shift register accurately corresponds to one packet and these registers are respectively functioned as a receiving register and a transmitting register TX. When a packet is in a 'full' state but the output of an address decoder is 'itself', a switch 17 connects the transmitting register TX to the ring, a packet stored in the receiving regiter is disused and overwritten by a succeeding input packet. The 'itself' packet is destructed in order to prevent the packet from being transmitted along the ring twice or more.

49. 发明专利

JPH01112847A RING-TYPE LOCAL AREA NETWORK 失效
公开(公告)号：JPH01112847A
公开(公告)日：1989-05-01
申请号：JP18275088
申请日：1988-07-21
申请人： MARCONI GEC LTD
发明人： JIYON RATSUSERU
IPC分类号： H04L12/42 , H04L12/43 , H04L12/433
摘要： PURPOSE: To avoid the loss of data by setting up a transmitting clock as a free-running type, avoiding the generation of a jitter between clocks having slightly different frequency band and triggering a transmitting clock generator by a fixed point in a received packet. CONSTITUTION: Each node for transmitting/receiving a packet with common length to/from a ring is provided with two shift registers, length of each shift register corresponds to one packet and the shift registers are respectively functioned as a receiving register RX and a transmitting register TX. A received clock is locked as data, i.e., data are restored from a data flow to which a clock for inputting the data to the receiving register RX at suitable timing is inputted. At a moment when the prescribed part of an input packet is received by the receiving register RX, a transmitting clock is triggered by a trigger means connected to the registe RX. Since the transmitting clock is a free- running type, a receiving clock is locked as data, and in order to avoid the loss of a certain data due to the collection of data in a node the start of a transmitting data packet is triggered by a fixed pant in a received packet.

50. 发明专利

JPH11128206A MAGNETIC RESONANCE IMAGE FORMING EQUIPMENT 失效
公开(公告)号：JPH11128206A
公开(公告)日：1999-05-18
申请号：JP24768998
申请日：1998-07-29
申请人： MARCONI GEC LTD
发明人： EASTHAM JOHN FREDERICK , YOUNG IAN ROBERT
IPC分类号： G01R33/3815 , A61B5/055 , G01R33/38 , G01R33/48 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To provide magnetic resonance image forming equipment using prepolarization technology to temporarily increase a low magnetic field. SOLUTION: Intervening MR image forming invites development of an open magnet, e.g. Such as a C-shaped magnet 1. In that case, it becomes increasingly hard to generate a large magnetic field for obtaining a good S/N ratio. To conquer this face, a prepolarization unit 7 is used, which uses, for instance, an HTSC magnet of YBCO, the magnet is carried near a patient to help the generation of the magnetic field, then drawn back to a position 8', to enable to detect a high frequency signal in the existence of the magnetic field of the C-shaped magnet 1.

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