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公开(公告)号：JPH04163271A
公开(公告)日：1992-06-08
申请号：JP28814590
申请日：1990-10-25
Applicant: SONY CORP
Inventor： SATO FUMIHISA , KATO KENICHI , ARAI TAKEHIKO , AOZUKA TORAO
Abstract: PURPOSE:To perform excellent transmission of an image signal to each image receiver through simple constitution by providing a distributor to distribute an image signal into an integral number after an image signal is amplified into a value increased approximate an integral number times when an image signal for a base band from an image signal delivering device is applied by a plurality of monitor receivers. CONSTITUTION:When a receiving system to display a letter broadcasting is applied for a television receiver mounted on an electric car, television receivers 101-124 are installed to the upper parts of the door pockets on both sides of doors 11-22 in the electric car, and image signals from an underfloor unit 46 having four antenna parts 30a-30d are inputted to the respective receivers. In this case, an image signal produces an output image signal by 'means of a three-distributor 61, and the first distribution output of first, second, and third distribution outputs from the three-distributor 61 is fed to a first two- distributor 71. An image signal of a base band fed by the first two-distributor 71 is amplified two times and two-distribution is effected. A first distribution output distributed therefrom is fed to, in order, two-distributors 72-93 connected to a rear stage.
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公开(公告)号：JPH04215302A
公开(公告)日：1992-08-06
申请号：JP27316290
申请日：1990-10-15
Applicant: HIGASHI NIPPON RYOKAKU TETSUDO , KAWASAKI HEAVY IND LTD , SONY CORP
Inventor： MAEKAWA YOSHIO , YAMAWAKI YOSHIICHI , TADAMA MARE , SATO FUMIHISA , KATO KENICHI , ARAI TAKEHIKO , AOZUKA TORAO
Abstract: PURPOSE:To make the electric field strength in a cabin uniform by stretching an antenna in the lengthwise direction around a ceiling in the cabin and connecting its one terminal to ground via an impedance element. CONSTITUTION:A linear conductor 1 is arranged along a slot 4b of a ceiling. A spacer member 11 is properly fitted at a prescribed interval. One terminal 1a of the conductor 1 connects to a conductor of a car body 2 via an impedance element (resistive element) 9. A grounding plate 10 is used for grounding. The impedance element 9 is inserted to a hole 16 of a metallic terminal board 12 of the grounding plate 10 and soldered. The terminal board 12 is fitted to the car body by a screw 20 for the ground connection. Through the constitution above, the on-vehicle antenna is realized, which provide the radiation of an electromagnetic wave whose electric field strength is uniform to allow excellent reception in the cabin.
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公开(公告)号：JPH04160992A
公开(公告)日：1992-06-04
申请号：JP28814490
申请日：1990-10-25
Applicant: SONY CORP
Inventor： SATO FUMIHISA , KATO KENICHI , ARAI TAKEHIKO , AOZUKA TORAO
Abstract: PURPOSE:To make it possible to receive teletext at a mobile body such as electric car by using a plurality of antennas constituting a diversity antenna to receive teletext by switching each antenna at an interval of at least 1sec+ or -0.5 sec. CONSTITUTION:Four antennas 30a-30d are installed on the roof of body of an electric car with their horizontal directions made different by 90 deg. from one another, and they receive radio wave coming nearly in all directions of 360 deg., and via switching section 41 in an underfloor unit 40 hanged under the floor of car body 1, booster 42, and ghost reduction tuner 43a, a previously set channel television broadcasting signal is obtained. The television broadcasting signal thus obtained is supplied to a discriminating circuit 44, and the discriminating circuit 44 discriminates a synchronous signal level contained in the broadcasting signal, controls the switching section 41 for selection of antenna line so as to be able to obtain a synchronous signal with the best level to constitute so called a diversity antenna. In this case, this discriminating circuit 44 carries out level discrimination at an interval of one second under the control of timer circuit 45.
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公开(公告)号：JPH04160991A
公开(公告)日：1992-06-04
申请号：JP28814290
申请日：1990-10-25
Applicant: HIGASHI NIPPON RYOKAKU TETSUDO , SONY CORP
Inventor： MAEKAWA YOSHIO , KAJITA TORU , TADAMA MARE , SATO FUMIHISA , KATO KENICHI , ARAI TAKEHIKO , AOZUKA TORAO
Abstract: PURPOSE:To make it possible to display all the screens of always relevant teletext program by storing teletext data of screen obtained by demodulating at least one screen of teletext data of a necessary teletext program in a corresponding area in a memory and by updating data stored in the memory. CONSTITUTION:Four antennas 30a-30d are installed on the roof of body of an electric car, and they receive radio wave coming nearly in all directions of 360 deg.. Switching section 41 in an underfloor unit 40 hanged under the floor of car body 1 controls a discriminating circuit 44, and selectively outputs a received signal supplied from one from four antennas on the roof, and via a booster 42, ghost reduction tuner 43, and character teletext decoder 46 obtains the teletext signal of drawing or the like. In this case, when obtaining at least one screen of data of a previously set predetermined teletext program, this data is stored in a corresponding area of memory 47, and data of a stored predetermined teletext program is sequentially read to the teletext decoder 46, output from the underfloor unit 40, and displayed on television receivers 101-124 installed in the car.
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公开(公告)号：JPH04160905A
公开(公告)日：1992-06-04
申请号：JP28814190
申请日：1990-10-25
Applicant: HIGASHI NIPPON RYOKAKU TETSUDO , SONY CORP
Inventor： MAEKAWA YOSHIO , KAJITA TORU , TADAMA MARE , SATO FUMIHISA , KATO KENICHI , ARAI TAKEHIKO , AOZUKA TORAO
Abstract: PURPOSE:To make television broadcasting receiving antennas on a movable body possible to receive a television broadcasting signal having extremely less ghost by laying at least four dipole antennas on the roof of a movable body with their mounting directions set different by about 90 deg. from one another in nearly the same horizontal plane. CONSTITUTION:Four antennas 30a, 30b, 30c, and 30d are mounted to the roof 2 of a vehicle body 1 in the peripheries of ventilators 3 and 4. In this case, antennas 30a, 30b, 30c, and 30d are individually formed with a dipole antenna consisting of two conductive bars with one end sections thereof are proximated and reflectors laid taking a predetermined interval distant from these conductive bars, and the gap section between two conductive bars is connected to a coaxial cable via a baloon (matching transformer) and further connected to a switch installed in an underfloor unit. Furthermore, four antennas 30a, 30b, 30c, and 30d are placed shifting their mounting angles by 90 deg. horizontally, and antennas 30a and 30b are mounted before and after the ventilator 3, while antennas 30c and 30d are mounted to right and left of ventilator 4 adjacent to ventilator 3.
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Patent Agency Ranking
公开(公告)号：JPH04142893A
公开(公告)日：1992-05-15
申请号：JP26504690
申请日：1990-10-04
Applicant: SONY CORP , NIPPON STEEL CORP
Inventor： SATO FUMIHISA , KATO KENICHI , UEMATSU MASAHIRO , MATSUSHITA AKIO
IPC: H04N5/44
Abstract: PURPOSE:To prevent a fully black level pattern or a white noise pattern from being displayed by outputting a still picture signal just before defect of reception stored in a memory means onto a monitor on the occurrence of defect of reception. CONSTITUTION:While the reception state is excellent, a video signal and an audio signal demodulated by a tuner means 3 are outputted to a monitor 4 as they are so as to allow the broadcast is viewed, and the video signal is simultaneously fed to a memory means 3b, rewritten sequentially and stored in the unit of patterns. When the defect of reception is reduced, a changeover means is switched and a picture signal stored in the memory means 3b is read out continuously as a still picture and outputted onto the monitor 4, and preferably an audio output is muted. Thus, a still picture signal just before defect of reception is displayed onto the screen of the monitor, a fully black level pattern or a white noise pattern is not generated and the disturbance of received pattern is avoided.
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公开(公告)号：JPH0698271A
公开(公告)日：1994-04-08
申请号：JP35362791
申请日：1991-12-17
Applicant: SONY CORP , NIPPON STEEL CORP
Inventor： KATO KENICHI , SATO FUMIHISA , OSHIMA TAKASHI , UEMATSU MASAHIRO
Abstract: PURPOSE:To attain the miniaturization and low cost for a receiver by A/D- converting a video signal in the state of composite signal by an A/D conversion means, and performing processing in the state of composite signal obtained by demodulating a wave. CONSTITUTION:The synchronizing signal of the composite signal that is the video signal which is demodulated signal of the wave received by an antenna is detected at a synchronizing signal detection circuit 4, and when it is decided that the S/N of the synchronizing signal is less than a prescribed reference level, a control signal which notifies the reduction of the electric field strength of the wave is outputted to a readout control part 8. In such a case, the control part 8 prohibits additional write on memory 2, and the composite signal stored in the memory 2 before the control signal is detected i.e., the video signal stored in the memory 2 before the electric field strength of the wave received by the antenna is decreased is read out successively, and it is outputted via a D/A converter 5 and a synchronizing signal attaching circuit 7.
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公开(公告)号：JPH0556364A
公开(公告)日：1993-03-05
申请号：JP24052191
申请日：1991-08-27
Applicant: SONY CORP
Inventor： KATO KENICHI , SATO FUMIHISA , AOZUKA TORAO , ARAI TAKEHIKO
Abstract: PURPOSE:To perform an optimum channel selection in each area by detecting the position of a traveling object and performing a optimum channel selection from among the receivable broadcasting stations in an area including this position. CONSTITUTION:A character broadcasting Telop reception transmission device 28 is composed of a position detection device 23, a multi-preset character broadcasting reception unit 21, a memory unit 24, a digital Telop scroll unit 25, an interface unit 26, etc. A vehicle display device 33 is composed of station name display signal transmission controller 31 and a Telop display device 32, etc. The channel selection information on a desired broadcasting is preset to a unit 21 every area where a train passes. Based on the position information obtained from a satellite for position detection and a position detection device 23, the position of the train at each point of time is detected while the train is running. Further, based on the channel selection information preset every area where the train passes, a desired broadcasting is received by an automatic tuning.
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公开(公告)号：JPH0435588A
公开(公告)日：1992-02-06
申请号：JP14252790
申请日：1990-05-31
Applicant: SONY CORP
Inventor： SATO FUMIHISA , KATO KENICHI , AOZUKA TORAO , ARAI TAKEHIKO
Abstract: PURPOSE:To satisfactorily receive teletext in a moving body or the like to obtain a display picture of high quality by providing a ghost reduction tuner, a teletext decoder, and a display means on which information of a character broadcast signal is displayed as a picture. CONSTITUTION:Antenna equipments 14 and 30 related to the diversity system and a ghost reduction tuner 34 which takes the reception signal outputted from antenna equipments 14 and 30 as the input to output a channel select signal where the ghost signal is suppressed are provided. A teletext decoder 36 which takes the channel select signal outputted from the ghost reduction tuner 34 as the input to send the teletext signal and display means 16 to 26 on which information of the character broadcast signal outputted from the character broadcast decoder 36 is displayed as a picture are provided. Thus, teletext is satisfactorily received during movement of a moving body or the like to obtain the display picture of high quality.
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公开(公告)号：JPH0549015A
公开(公告)日：1993-02-26
申请号：JP22501791
申请日：1991-08-09
Applicant: SONY CORP , LSI JAPAN KK
Inventor： SATO FUMIHISA , TANAKA TAKASHI , AOZUKA TORAO , ARAI TAKEHIKO , KATO KENICHI
Abstract: PURPOSE:To receive a teletext in an excellent state even when the directivity of an antenna is changed by selecting an optimum correct character data among the same character data obtained through plural channels. CONSTITUTION:Each of plural tuners 2a-2d has a ghost cancel function and extracts only the television signal of a specific and the same channel including a character multiplex signal among television signals received by antennas 1a-1d respectively. Moreover, decoders 3a-3d separate a character signal from the television signal supplied from the tuners 2a-2d and reproduce the character data by decoding the character signal. The decoders 3a-3d detect and correct an error by using an error correction signal. Then a correct packet data with no error correction disable flag set thereto is obtained in channels 8a-8d from an extract section 4 and the correct data packet is outputted for each horizontal scanning period.
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