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公开(公告)号：HK1046792A1
公开(公告)日：2003-01-24
申请号：HK02106834
申请日：2002-09-18
Applicant: SONY CORP
Inventor： OKADA TAKAHIRO , IKEDA YASUNARI
IPC: H04J11/00 , H04B1/04 , H04J20060101 , H04L5/06 , H04J
Abstract: A transmission apparatus which prevents adversely affects from an adjacent channel even without provision of a guard band. An information sequence 1 input to a mapping unit 21 - 1 of the transmission apparatus is mapped onto predetermined signal points by QAM modulation, etc. and output to a frequency converter 22 - 1 . The frequency converter 22 - 1 converts the frequency according to a center frequency of an input signal and outputs the result to a multiplexer 23 . The other data series are processed in the same way as the data series 1 are output to the multiplexer 23 . The multiplexer 23 multiplexes a plurality of input signals, while an IFFT processor 24 performs an inverse Fourier transform on the multiplexed signals all at once. The inverse Fourier transformed signal is quadrature-modulated by a quadrature modulator 26 , converted to the RF band signal by the frequency converter 28 , and transmitted from an antenna 30.
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公开(公告)号：BR0008667A
公开(公告)日：2002-02-13
申请号：BR0008667
申请日：2000-03-06
Applicant: SONY CORP
Inventor： OKADA TAKAHIRO , IKEDA YASUNARI
IPC: H04J11/00 , H04B1/04 , H04J20060101 , H04L5/06
Abstract: A transmission apparatus which prevents adversely affects from an adjacent channel even without provision of a guard band. An information sequence 1 input to a mapping unit 21 - 1 of the transmission apparatus is mapped onto predetermined signal points by QAM modulation, etc. and output to a frequency converter 22 - 1 . The frequency converter 22 - 1 converts the frequency according to a center frequency of an input signal and outputs the result to a multiplexer 23 . The other data series are processed in the same way as the data series 1 are output to the multiplexer 23 . The multiplexer 23 multiplexes a plurality of input signals, while an IFFT processor 24 performs an inverse Fourier transform on the multiplexed signals all at once. The inverse Fourier transformed signal is quadrature-modulated by a quadrature modulator 26 , converted to the RF band signal by the frequency converter 28 , and transmitted from an antenna 30.
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公开(公告)号：BR0009084A
公开(公告)日：2002-01-02
申请号：BR0009084
申请日：2000-03-17
Applicant: SONY CORP
Inventor： IKEDA YASUNARI , OKANOBU TAIWA
Abstract: An interference signal from an adjacent signal is prevented and a desired signal demodulated. A frequency conversion circuit 4 converts a received signal frequency to a first intermediate frequency signal of a first intermediate frequency higher than the frequency of the signal to be demodulated by 57 MHz. The first intermediate frequency signal is further converted to a second intermediate frequency signal of a second intermediate frequency by a frequency conversion circuit 8 . The second intermediate frequency is a frequency lower than the 57 MHz of the first intermediate frequency by exactly a frequency ½ of an FFT sampling f-clock. A clock generation circuit 11 generates a signal of a frequency two times the FFT sampling clock, that is, four times the second intermediate frequency. The second intermediate frequency is sampled by the A/D conversion circuit 10 based on the signal supplied from the clock generation circuit 11 , demodulated by a demodulation circuit 12 , and subjected to an FFT operation by an FFT circuit 13 , whereby the signal is demodulated.
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公开(公告)号：AU3516401A
公开(公告)日：2001-10-18
申请号：AU3516401
申请日：2001-04-12
Applicant: SONY CORP
Inventor： OKADA TAKAHIRO , IKEDA TAMOTSU , IKEDA YASUNARI , MIYATO YOSHIKAZU
Abstract: The time required for switch the channel can be remarkably curtailed. When broadcasting signals through a plurality of information channels with an OFDM system, the plurality of information channels are multiplexed in the sense of frequency and collectively subjected to IFFT modulation for connected transmission instead of subjecting the plurality of information channels independently to OFDM modulation for transmission. With this arrangement, the efficiency of exploitation of frequencies is improved. According to the invention, the OFDM frames are synchronized for each information channel for the purpose of connected transmission. Then, the OFDM receiver can switch the information channel for signal reception, maintaining the frame synchronizing signals.
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公开(公告)号：FR2532501B1
公开(公告)日：1988-04-29
申请号：FR8313735
申请日：1983-08-25
Applicant: SONY CORP
Inventor： TANAKA YUTAKA , IKEDA YASUNARI , NAKANO HIROSHI
Abstract: A television receiver having a signal input terminal supplied with an interlace video signal and a signal coverter connected to the input terminal for converting the interlace video signal to a non-interlace signal to be displayed. The signal converter includes a signal inserting circuit for inserting new line signals between two successive line signals of the interlace signal, the new line signals being formed by interpolating one of the preceding and succeeding line signals in the interlace signal. A three dimensional filter is connected to the signal converter for attentuating vertical and horizontal high frequency components in the non-interlace video signal only when the non-interlace signal includes both of the vertical and horizontal high frequency components.
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Patent Agency Ranking
公开(公告)号：CA1193712A
公开(公告)日：1985-09-17
申请号：CA414594
申请日：1982-11-01
Applicant: SONY CORP
Inventor： FUJIMURA YASUSHI , OKADA TAKASHI , TANAKA YUTAKA , IKEDA YASUNARI
Abstract: DOUBLE-SCANNING NON-INTERLACE TELEVISION RECEIVER A double-scanning non-interlace television receiver for receiving an interlace television signal having alternating odd and even fields of scan lines which are normally interlaced, as displayed, comprises a receiver circuit which receives the interlace television signal and generates received line signals representative of the scan lines of a field being received, a visual display apparatus, and a non-interlace converting circuit connected to the receiver circuit which generates an averaged line signal from two consecutive received line signals and serially supplies the averaged line signal and the consecutive received line signals to the visual display apparatus for display by the latter, with each averaged line signal being supplied and displayed between the respective received line signals.
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公开(公告)号：CA1191250A
公开(公告)日：1985-07-30
申请号：CA415172
申请日：1982-11-09
Applicant: SONY CORP
Inventor： IKEDA YASUNARI
Abstract: DOUBLE-SCANNING NON-INTERLACE COLOR TELEVISION RECEIVER A double-scanning non-interlace color television receiver which receives an interlace color television signal having alternating odd and even fields of scanned lines which are normally interlaced, as displayed, comprises a receiver circuit which receives the interlace color television signal and includes a circuit which generates respective chroma and luminance scanning line signals in response thereto, a visual display apparatus, and a non-interlace converting circuit with a luminance double-scanning circuit which generates an averaged luminance scanning line signal from each two consecutive luminance scanning line signals of the same field, and which supplies the consecutive luminance scanning line signals and the averaged luminance scanning line signal to the visual display apparatus for display by the latter of each averaged luminance scanning line signal between the respective two consecutive luminance scanning line signals, and a circuit which supplies to the visual display apparatus color difference signals derived from the chroma scanning line signal corresponding to one of the two consecutive luminance scanning line signals for display in synchronism with the averaged luminance scanning line signal.
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公开(公告)号：DE3241951A1
公开(公告)日：1983-06-16
申请号：DE3241951
申请日：1982-11-12
Applicant: SONY CORP
Inventor： IKEDA YASUNARI
Abstract: A double-scanning non-interlace color television receiver which receives an interlace color television signal having alternating odd and even fields of scanned lines which are normally interlaced, as displayed, comprises a receiver circuit which receives the interlace color television signal and includes a circuit which generates respective chroma and luminance scanning line signals in response thereto, a visual display apparatus, and a non-interlace converting circuit with a luminance double-scanning circuit which generates an averaged luminance scanning line signal from each two consecutive luminance scanning line signals of the same field, and which supplies the consecutive luminance scanning line signals and the averaged luminance scanning line signal to the visual display apparatus for display by the latter of each averaged luminance scanning line signal between the respective two consecutive luminance scanning line signals, and a circuit which supplies to the visual display apparatus color difference signals derived from the chroma scanning line signal corresponding to one of the two consecutive luminance scanning line signals for display in synchronism with the averaged luminance scanning line signal.
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公开(公告)号：FR2517912A1
公开(公告)日：1983-06-10
申请号：FR8220260
申请日：1982-12-03
Applicant: SONY CORP
Inventor： OKADA TAKASHI , IKEDA YASUNARI , TANAKA YUTAKA
Abstract: A double-scanning non-interlace television receiver with a vertical aperture correction circuit for receiving an interlace television signal having alternating odd and even fields of scanned lines which are interlaced, as displayed, comprises a receiver circuit which receives the interlace television signal and which generates interlace scanning line signals for each of the fields, a visual display apparatus, a non-interlace converting circuit which converts the interlace scanning line signals for each of the fields to non-interlace scanning line signals which are displayed on the visual display apparatus, with each of the scanned lines being scanned twice, and a high frequency emphasizing circuit which emphasizes the high frequency components of the interlace scanning line signals.
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公开(公告)号：DE3240921A1
公开(公告)日：1983-05-19
申请号：DE3240921
申请日：1982-11-05
Applicant: SONY CORP
Inventor： FUJIMURA YASUSHI , OKADA TAKASHI , TANAKA YUTAKA , IKEDA YASUNARI
Abstract: A double-scanning non-interlace television receiver for receiving an interlace television signal having alternating odd and even fields of scan lines which are normally interlaced, as displayed, comprises a receiver circuit which receives the interlace television signal and generates received line signals representative of the scan lines of a field being received, a visual display apparatus, and a non-interlace converting circuit connected to the receiver circuit which generates an averaged line signal from two consecutive received line signals and serially supplies the averaged line signal and the consecutive received line signals to the visual display apparatus for display by the latter, with each averaged line signal being supplied and displayed between the respective received line signals.
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