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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
61	METHOD AND APPARATUS FOR OUTPUTTING AUDIO SIGNAL, AND METHOD OF ADJUSTING VOLUME OF THE AUDIO SIGNAL	EP13733566.7	2013-01-03	EP2814031A1	2014-12-17	KWAK, Sang-Yeop
A method and apparatus for outputting an audio signal and a method of adjusting the volume of an audio signal are provided. An embodiment of the present invention provides a method for outputting an audio signal that includes: (a) determining an output level of a modulated signal to be outputted for each respective frequency band by using a hearing threshold measured for the respective frequency band; and (b) outputting the modulated signal and an audio signal simultaneously. An embodiment of the present invention can improve hearing ability by outputting an audio signal and a modulated signal together. Also, according to an embodiment of the present invention, a user can use visual signals to personally set the output level of audio signals that is optimal for each frequency band in accordance with changes in the user's dynamic hearing threshold for each respective frequency band, even while listening to audio signals of which the output level for each frequency band was determined previously.
62	A magnetic disk sampled amplitude read channel employing interpolated timing recovery for synchronous detection of embedded servo data	EP96119296.0	1996-12-02	EP0777211A2	1997-06-04	Reed, David E.; Bliss, William G.
A sampled amplitude read channel reads user data and embedded servo data stored on a magnetic medium by detecting digital data from a sequence of discrete time interpolated sample values. A write frequency synthesizer generates a write clock for writing digital data to the magnetic medium at a predetermined baud rate for a selected zone, and upon read back, a read frequency synthesizer generates a fixed sampling clock at a frequency slightly higher than the write frequency at the outer zone. A sampling device samples the analog read signal at this fixed sampling rate across the data zones and servo wedges to generate a sequence of discrete time channel samples that are not synchronized to the baud rate. Before sampling, an analog receive filter processes the read signal to attenuate aliasing noise without having to adjust its spectrum across data zones or servo wedges. A discrete time equalizing filter equalizes the channel samples according to a predetermined partial response (PR4, EPR4, EEPR4, etc.). An interpolating timing recovery circuit, responsive to the equalized channel samples, computes an interpolation interval τ and, in response thereto, generates interpolated sample values substantially synchronized to the baud rate. The timing recovery circuit also generates a synchronous data clock for clocking a discrete time sequence detector and pulse detector which detect the digital user and servo data from the interpolated sample values.
63	Information signal reproducing apparatus and information signal reproducing method	EP95118698.0	1989-10-31	EP0710956A1	1996-05-08	Saito, Seiichi; Takeuchi, Toshifumi; Nakamura, Masafumi, Hitachi Hachimanyama; Shiokawa, Junji, Keimeiryo 405, 850, Maiokacho,; Kawamae, Osamu, Keimeiryo 307, 850, Maiokacho,
The present invention relates to an information signal reproducing apparatus and to an information signal reproducing method. The apparatus comprises means for reading serial digital signals, means for reproducing synchronizing signals corresponding to dummy block synchronizing signals (S') and block synchronizing signals (S) and means for determining the accuracy of each reproduced synchronizing signal. The method for recording said information signals comprises the steps of generating preamble signals (P), generating data frame signals (D₀), providing serial recording digital signals on the basis of said preamble signals and said data frame signals and recording said serial recording signals on discreet areas of a recording medium.
64	PULSE TESTING METHOD AND APPARATUS, TESTING DEVICE, AND STORAGE MEDIUM	US17257290	2019-07-15	US20210231525A1	2021-07-29	Xiaojian CAO; Yunpeng XIE; Zhimin HE; Haowen ZHANG
A pulse testing method and device, a testing apparatus, and a storage medium are disclosed, the pulse testing method includes: performing a pulse test on an optical fiber by using a plurality of pulses of different pulse widths respectively to obtain test data; and fitting the test data corresponding to the plurality of pulses of different pulse widths.
65	Finite field based short error propagation modulation codes	US12345561	2008-12-29	US07907359B2	2011-03-15	William G. Bliss; Razmik Karabed
The invention relates to a data modulation method applicable to make data streams tend to have desired properties, useful for clock recovery, making signals more distinguishable, or enforcing run-length conditions. A stream of input data and a corresponding stream of output data are grouped into elements of a finite field. Input elements of said input data are modified by a transform generating output elements of the output data, such that a current output element is a linear combination of a current input element and at least one previous output element. A multiplier applied to at least one previous output element is a non-zero and non-unity element of the finite field. A set of initial conditions inherent to the transform, is selected such that the output elements resulting from the transform tend to have the desired property.
66	EMBEDDED TRACK INFORMATION FOR PATTERNED MEDIA	US12166913	2008-07-02	US20100002325A1	2010-01-07	Mark David Bedillion
A bit-patterned magnetic media (BPM) includes with respect to each data track regular bit-islands having a first size and large bit-islands having a second size. The placement of the regular bit-islands and large bit-islands within each data track results in a unique pattern. An amplitude-modulated readback signal is generated in response to a transducer head moving over the bit-patterned media. Based on the amplitude-modulated readback signal, channel response circuitry detects the pattern of regular bit-islands and large bit-islands associated with a particular data track. Based on the detected pattern, the channel response circuitry is able to uniquely identify the data track.
67	Finite field based short error propagation modulation codes	US11016283	2004-12-17	US07486456B2	2009-02-03	William G. Bliss; Razmik Karabed
The invention relates to a data modulation method applicable to make data streams tend to have desired properties, useful for clock recovery, making signals more distinguishable, or enforcing run-length conditions. A stream of input data and a corresponding stream of output data are grouped into elements of a finite field. Input elements of said input data are modified by a transform generating output elements of the output data, such that a current output element is a linear combination of a current input element and at least one previous output element. A multiplier applied to at least one previous output element is a non-zero and non-unity element of the finite field. A set of initial conditions inherent to the transform, is selected such that the output elements resulting from the transform tend to have the desired property.
68	DATA MODULATION/ENCRYPTION METHOD USED IN HOLOGRAPHIC STORAGE SYSTEM	US12036972	2008-02-25	US20080212424A1	2008-09-04	Chia-Han YEN
The disclosure is a data modulation/encryption method used in a holographic storage system. The data modulation method includes steps of: receiving an original data sequence; arraying the original data sequence to a first matrix with n×n dimensions; multiplying the first matrix by a sparse matrix to generate a second matrix with n×n dimensions; executing a modulating and mapping procedure for generating a third matrix with (n+1)×n or n×(n+1) dimensions, wherein the third matrix is composed of a modulation part and an extra part; and, storing the third matrix; wherein the sparse matrix is a binary matrix, a total number of elements in each row of the sparse matrix is odd, all rows of the sparse matrix have a same even number of bit 1, all columns of the sparse matrix have a same even number of bit 1, and the sparse matrix has an inverse matrix.
69	Signal detection method	US11449994	2006-06-09	US20070211360A1	2007-09-13	Hiroshi Ashikaga; Shin Tomimoto
The storage device 10 provides a signal detection method for preventing the degradation of an error rate at the time of information reading, caused by the change of a magnetic characteristic due to a non-uniform magnetic storage medium. The storage device 10 comprises a storage medium 11 for storing information, a reproduction signal generation unit for generating a reproduction signal, a synch mark pattern detection unit 13 for detecting a synch mark pattern from the reproduction signal, a filter setting unit for setting filters and filters 15 for demodulating the reproduction signal and a data detection unit 16 for detecting data from the demodulated signal.
70	Magnetic recording apparatus and magnetic recording and reproducing apparatus	US11527708	2006-09-27	US20070206307A1	2007-09-06	Masatoshi Sakurai; Takeshi Saito; Kazuto Kashiwagi
In a magnetic recording apparatus, a magnetic recording medium has a RAM area on which rewritable information can be recorded. The magnetic recording medium also has a ROM area having a pattern area in which first-type segment sequence of magnetically rewritable magnetic segments and magnetically non-rewritable nonmagnetic segments is fixedly recorded as first-type modulation information. Predetermined segments in the first-type segment sequence are magnetized and changed to magnetized segments. A segment sequence of first and second segments magnetized in one and opposite directions is used to magnetically record second-type modulation information in the pattern area.
71	Method and apparatus for recording and reproducing main and sub information	US676505	1991-03-28	US5430705A	1995-07-04	Itsuo Takanashi; Shintaro Nakagaki; Tsutou Asakura; Masato Furuya; Yoshihisa Koyama; Yuji Uchiyama
In an information recording apparatus, light containing information to be recorded is generated, and a photo-to-electric converting device serves to convert the light into a charge latent image. The photo-to-electric converting device includes a photoconductive member exposed to the light. Information corresponding to the charge latent image is recorded on a recording medium. A first recording device serves to record main information on a first region of the recording medium. A second recording device separate from the first recording device serves to record sub information on a second region of the recording medium. The second region is different from the first region.
72	Apparatus for reading optically encoded soundtracks	US757404	1991-09-10	US5231627A	1993-07-27	Michael W. Paul; Sydney T. Wiles
An apparatus for reading variable area optically encoded soundtracks has a light source, a lens system and a detector. The detector can be a linear array, for example a CCD array, with an integral slit, with the lens system imaging the soundtrack in the plane of the slit. The apparatus includes circuitry for processing the detector output signal. The processing circuitry can be provided with a feedback control circuit to condition the detector output signal so that the resulting audio signal is not affected by variations in the film or electronic components. Further, a circuit can be included for detecting whether an analogue or digital soundtrack is present, and automatically switching the output of an amplification circuit between analogue and digital outputs.
73	Method and apparatus for recording PCM signal	US787447	1985-10-15	US4704640A	1987-11-03	Hiroo Okamoto; Masaharu Kobayashi
In PCM signal recording method and apparatus using rotary heads for converting two channels of autio PCM signals each consisting of 12-bit words to a data consisting of 8-bit words and recording the converted data, there is provided means for converting the PCM signals to two data each consisting of eight high order bits of each of two words of the PCM signals, and an 8-bit data consisting of the remaining four low order bits of the respective words. The converted PCM data are recorded on a record tape in a format such that PCM signals having i words/channel which are to be recorded on first and second tracks are divided into a first half and a second half, even data in the first half and odd data in the second half constitute the data to be recorded on the first track, and odd data in the first half and even data in the second half constitute the data to be recorded on the second track.
74	Method and apparatus for magnetically recording and reproducing physiological information	US696717	1976-06-16	US4087840A	1978-05-02	Ronald J. Zdrojkowski; Richard L. Longini
Disclosed are a method and an apparatus for magnetically recording and reproducing physiological information such as in an electrocardiogram. The ECG signal is pulse width modulated (PWM), and the transition points, or zero crossings are stored on magnetic tape. The original PWM signal is then reproduced from the output of the playback head by reacting to the simultaneous occurrence of zero crossings and large magnitude derivative signals. Also disclosed is the concept of automatically reacting to recorded audible information during the reconstruction of the original PWM signal.
75	System for recording and reproducing signal waves	US37668953	1953-08-26	US2950352A	1960-08-23	BELCK HANS B

76	METHOD AND APPARATUS FOR OUTPUTTING AUDIO SIGNAL, AND METHOD OF ADJUSTING VOLUME OF THE AUDIO SIGNAL	EP13733566.7	2013-01-03	EP2814031B1	2018-04-25	KWAK, Sang-Yeop
A method and apparatus for outputting an audio signal and a method of adjusting the volume of an audio signal are provided. An embodiment of the present invention provides a method for outputting an audio signal that includes: (a) determining an output level of a modulated signal to be outputted for each respective frequency band by using a hearing threshold measured for the respective frequency band; and (b) outputting the modulated signal and an audio signal simultaneously. An embodiment of the present invention can improve hearing ability by outputting an audio signal and a modulated signal together. Also, according to an embodiment of the present invention, a user can use visual signals to personally set the output level of audio signals that is optimal for each frequency band in accordance with changes in the user's dynamic hearing threshold for each respective frequency band, even while listening to audio signals of which the output level for each frequency band was determined previously.
77	Optical information recording medium and method for recording/reproducing optical information	EP04014398.4	2001-09-28	EP1467351B1	2007-01-10	Yamada, Katsuyuki c/o Ricoh Company, Ltd.; Narumi, Shinya c/o Ricoh Company, Ltd.; Harigaya, Makoto c/o Ricoh Company, Ltd.; Tani, Katsuhiko c/o Ricoh Company, Ltd.; Iwata, Noriyuki c/o Ricoh Company, Ltd.; Onagi, Nobuaki c/o Ricoh Company, Ltd.; Ito, Kazunori c/o Ricoh Company, Ltd.; Shibaguchi, Takashi c/o Ricoh Company, Ltd.; Hibino, Eiko c/o Ricoh Company, Ltd.; Yuzurihara, Hajime c/o Ricoh Company, Ltd.; Ohkura, Hiroko c/o Ricoh Company, Ltd.; Shimofuku, Akira c/o Ricoh Company, Ltd.; Nakamura, Yuki c/o Ricoh Company, Ltd.

78	Optical information recording medium, method of manufacturing the optical information recording medium, and method of and apparatus for recording/reproducing optical information	EP01123474.7	2001-09-28	EP1193696B1	2007-01-03	Yamada, Katsuyuki; Narumi, Shinya; Harigaya, Makoto; Tani, Katsuhiko; Iwata, Noriyuki; Onagi, Nobuaki; Ito, Kazunori; Shibaguchi, Takashi; Hibino, Eiko; Yuzurihara, Hajime; Ohkura, Hiroko; Shimofuku, Akira; Nakamura, Yuki

79	A magnetic disk sampled amplitude read channel employing interpolated timing recovery for synchronous detection of embedded servo data	EP96119296.0	1996-12-02	EP0777211B1	2002-04-03	Reed, David E.; Bliss, William G.
A sampled amplitude read channel reads user data and embedded servo data stored on a magnetic medium by detecting digital data from a sequence of discrete time interpolated sample values. A write frequency synthesizer generates a write clock for writing digital data to the magnetic medium at a predetermined baud rate for a selected zone, and upon read back, a read frequency synthesizer generates a fixed sampling clock at a frequency slightly higher than the write frequency at the outer zone. A sampling device samples the analog read signal at this fixed sampling rate across the data zones and servo wedges to generate a sequence of discrete time channel samples that are not synchronized to the baud rate. Before sampling, an analog receive filter processes the read signal to attenuate aliasing noise without having to adjust its spectrum across data zones or servo wedges. A discrete time equalizing filter equalizes the channel samples according to a predetermined partial response (PR4, EPR4, EEPR4, etc.). An interpolating timing recovery circuit, responsive to the equalized channel samples, computes an interpolation interval tau and, in response thereto, generates interpolated sample values substantially synchronized to the baud rate. The timing recovery circuit also generates a synchronous data clock for clocking a discrete time sequence detector and pulse detector which detect the digital user and servo data from the interpolated sample values. <IMAGE>
80	Magnetic recording system	EP80105007.1	1980-08-22	EP0025885B1	1984-05-16	Fujiwara, Tatsuo

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