U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Celebrity Inventors

Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 380/236 - Modifying accompanying audio signal


Subclass of Class 380 - Cryptography
Definition: Subject matter wherein a parameter of an audio signal is
No. of patents: 71
Last issue date: 09/09/2008


1    
NumberTitleIssue Date
7424739On-machine communication verification
The present invention provides for validating that one or more modules reside on the same machine. When a second module wishes to establish communication with a first module, a shared memory that is accessible by the modules—but inaccessible by modules outside the...
09/09/2008
7412547Apparatus, system, and method for distributed processing with a peripheral input/output channel based device
An apparatus, system and method of distributed processing are disclosed. The apparatus, system, and method communicate a software process from a driver device through a peripheral input/output channel to a processing device. The driver device and the processing devi...
08/12/2008
7397920Information processing device and method, and recording medium
Data input to an encrypting/decoding portion are input to an erroneous decoding detector. The erroneous decoding detector judges whether the data input are correctly decoded or not. For example, if it is judged that audio data input are not correctly decoded, the er...
07/08/2008
7370204Watermark data embedding apparatus and extracting apparatus
By a program process, CPU 31 embeds a watermark data into a waveform data stored in wave memory 41a. The program includes a step for detecting a characterizing part (attack part and loop part) of a waveform data that represents a waveform of a m...
05/06/2008
7340609Data transform method and apparatus, data processing method and apparatus, and program
When sample data is played back, audio guide data G1 and G2 and subsequent frame data are played back based on usage license information L1 contained in the sample data. When high-quality data is generated, the audio guide data G1 and G
03/04/2008
7319756Audio coding
Coding of an audio signal (x) is provided where the coded bitstream (AS) comprises a parametric representation of the audio signal. One component of the parametric representation comprises tracks of linked sinusoidal components (CS) where subsequently linked compone...
01/15/2008
7316032Method for allowing a customer to preview, acquire and/or pay for information and a system therefor
A method for controlling distribution and access to an information product, said method comprising the steps of: superposing a utility-reducing masking effect on said information product; controlling the presence, absence and/or permanence of said masking effects by...
01/01/2008
7230898Reproducing apparatus and recording apparatus
This invention relates to a reproducing apparatus compatible with a storage medium storing copyright-protected and copyright-unprotected files, the reproducing apparatus being capable of reproducing any one of the files stored on the medium, the reproducing apparatu...
06/12/2007
7146008Conditional access television sound
A digitally encrypted audio signal may be transmitted with an analog television signal. Access to the analog television video signal may be controlled by using graphics overlay techniques. The use of digital encryption techniques on the audio channel prevents improp...
12/05/2006
7146007Secure conditional access port interface
An apparatus and method thereof for providing a secure path for a digital signal in an intelligent transceiver such as a bi-directional set-top box. A digital signal (e.g., a broadcast signal or a signal received via a cable modem) is received by the intelligent tra...
12/05/2006
7124444Method of converting audio data for a portable device and reproducing the converted audio data
A method of converting audio data encrypted for anti-piracy and copyright protection to a suitable format so that the data can be played in a portable device. A computer first decrypts the encrypted audio data and inserts information for setting equalizer, then encr...
10/17/2006
7109603Power converter system
A system and method for integrating communications equipment. The system includes a power supply in which the power supply provides power to telephone equipment located in a centralized unit and at least one power converter for receiving the power from the power sup...
09/19/2006
7039942Pad adjustable equalizer for two way cable transmission
A forward signal equalizer for a forward amplifier for two-way coaxial cable systems, of the type having a distribution center distributing forward signals, and having reception facilities for receiving return signals from said cable system, the system having forwar...
05/02/2006
7035700Method and apparatus for embedding data in audio signals
Method and apparatus for embedding binary data in audio signals. The magnitude of the power spectrum at the perceptual holes of each frame of a host speech utterance, may be altered so as to embed digital data. The phase spectrum at perceptually masked spectral poin...
04/25/2006
7020286Modulation of dynamical systems for communication
A system for modulating and demodulating signals that provides a new class of signal modulators and their corresponding demodulators. The modulation scheme embeds in an information signal a carrier signal by modulating the oscillatory rate of the carrier signal. The...
03/28/2006
6990198Apparatus and method for securing communication information in CDMA communication system
An apparatus and a method for securing a communication information in a CDMA communication system are disclosed. The method of the invention comprises the steps of encoding a input analog signal as an information bit having a predetermined size and generating a voco...
01/24/2006
6985590Electronic watermarking method and apparatus for compressed audio data, and system therefor
The present invention provides a method and a system with which information embedded in compressed digital audio data can be directly operated. An embodiment of the system for embedding additional information in compressed audio data includes: means for extracting M...
01/10/2006
6879652Method for encoding an input signal
An encoder transforms at least a portion of a signal, counts the resulting transform coefficients having a zero value, and encodes the signal with the zero count. A decoder decodes the signal in order to recover the zero count. The decoder may also determine its own...
04/12/2005
6597789Video/audio scrambling with single conversion tuners
Conventional decoding systems for scrambled audio-visual signals are improved by providing a dual-side local oscillator that functions as a high-side oscillator if the incoming RF signal is unscrambled and as a low-side oscillator if the incoming RF signa...
07/22/2003
6571144System for providing a digital watermark in an audio signal
The foregoing problems are solved and a technical advance is achieved by a computer-implemented system for providing a digital watermark in an audio signal. In a preferred embodiment, a audio file, such as a .WAV file, representing an audio signal to be w...
05/27/2003
6310957Method and apparatus for interdicting cable television channels
Apparatus for interdicting television channels of a cable television system comprises a plurality of oscillators dedicated to jamming the audio portion of television channels to be interdicted, and a further plurality of different oscillators dedicated to...
10/30/2001
6222924Scrambling of digital media objects in connection with transmission and storage
To prevent unauthorized reception, storage, copying and reproduction of digital media objects it is defined in addition to a scrambled broadcast format a scrambled storage format which is different from the broadcast format. A user's terminal equipment ca...
04/24/2001
6185687Signal reproducing/recording/transmitting method and apparatus and signal record medium
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management information read out from each header of a data ...
02/06/2001
6091822Method and apparatus for recording scrambled video audio signals and playing back said video signal, descrambled, within a secure environment
A technique is disclosed for preventing unauthorized playback of scrambled video/audio signals recorded on, for example, a video tape cassette, which technique includes several cooperating processes and apparatus which further prevent the playback of reco...
07/18/2000
6078668Apparatus and method for concealing data bursts in an analog scrambler using audio repetition
An apparatus and method for concealing data bursts in an analog scrambler using audio repetition. What otherwise would be periodic data bursts appearing at the audio output are replaced with samples from audio portions of the multiplexed signal. Preferabl...
06/20/2000
6055315Distributed scrambling method and system
A scrambling system for a cable television system in which a group of channel frequencies are reused over a plurality of service areas includes an access controller, an encoder and a plurality of simplified scrambling units. Each service area receives dif...
04/25/2000
5606612Method and apparatus for television signal scrambling using a line expansion technique
A method and apparatus for scrambling an original analog video signal samples predetermined portions of the original video signal at a first rate and stores the sampled portions of the original video signal within a memory device. The stored video signal ...
02/25/1997
5579391TV scramble system for preventing illegal reception
A scramble system can effectively prevent a scrambled broadcast from being viewed illegally. In a scramble system in which a video signal scrambled by a scrambling apparatus (10) is descrambled by a decoding apparatus (20), an identification code that spe...
11/26/1996
5553142Audio recovery from scrambled video in a cable compatible television receiver
A cable ready television receiver includes a set back decoder that communicates with the microprocessor in the television receiver via its own microprocessor. A synchronous demodulator in the television receiver is operated normally for unscrambled televi...
09/03/1996
5528692Frequency inversion scrambler with integrated high-pass filter having autozero to remove internal DC offset
A frequency inversion scrambler in a cordless telephone utilizes an integrated high-pass filter (14) between a first stage low-pass filter (12) and modulator (16) to reduce the filter order while maintaining low group delay in the audio signal. The first ...
06/18/1996
5504934Satellite communication receiving device capable of automatically dealing with frequent change of an assigned channel
In a satellite communication receiving device which is for use in a network having a network number and comprises a tuner section (24) for receiving a first communication signal as a received signal from an assigned channel assigned at a time to the netwo...
04/02/1996
5463656System for conducting video communications over satellite communication link with aircraft having physically compact, effectively conformal, phased array antenna
A system architecture and communication methodology for significantly reducing the size of an aircraft antenna required to provide full broadcast quality video communications with an aircraft via a satellite communications link includes a combination of v...
10/31/1995
5442701Process for the broadcasting of conditional access programs permitting a progressive access to such programs
A process for broadcasting conditional access programs which permits a progressive access. Scrambled program data is transmitted along with partial access checking messages and complete access checking messages such that subscribers having a partial acces...
08/15/1995
5418782Methods and apparatus for providing virtual service selection in a multi-service communications system
Methods and apparatus are disclosed for providing virtual service selection in a multi-service communications system wherein the service components of each of a number of basic services are transmitted to subscriber locations on one of a plurality differe...
05/23/1995
5359601Apparatus providing dynamic virtual service selection in a multi-service communications system
An apparatus providing a dynamic virtual service capability in a multi-service communications system is claimed. A dynamic virtual service comprises an associated group of basic services wherein only one of the basic services in the group is active at any...
10/25/1994
5311543Television transmission system using two stages of spead-spectrum processing
A 2-stage SS (spread-spectrum) system for transmitting a coded TV signal, said coded signal consisting of first components requiring near-perfect transmission and second components for which somewhat imperfect transmission is acceptable, wherein a first S...
05/10/1994
5305382Satellite broadcast receiver
A satellite broadcast receiver comprise a demodulator for demodulating received signals, a mode changer for changing the voice output mode, and a control that prevents a voice output mode changing operation in response to a voice output mode changing sign...
04/19/1994
5220602NICAM compatible television signal converter
A NICAM compatible baseband television signal converter is provided. A television signal including a NICAM digital audio subcarrier is converted to baseband and the NICAM subcarrier is filtered therefrom. The video and analog audio portions of the baseban...
06/15/1993
5121430Storm alert for emergencies
A geographically specific emergency alert system includes a code generator unit in which geographic areas to be alerted and types of severity of alerts are selected and code strings generated to represent the affected areas and alert types selected. The c...
06/09/1992
5060262Video scrambling, audio masking and data transmission methods for wireless cable systems
Video scrambling is accomplished by attenuating the video carrier during the horizontal blanking interval and/or by omitting horizontal sync pulses, vertical serration pulses and equalizing pulses. The method of scrambling can be dynamically changed, but ...
10/22/1991
1    
 
Sign InRegister
Username  
Password   
forgot password?