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| Number | Title | Issue Date |
| 7373652 | Server-centric search function in an interactive program guide Techniques for searching a program guide database. In accordance with a method, one or more search criteria (e.g., keywords) are received and a request for a search is then sent, along with the search criteria, to a head end of an information distribution system. In... | 05/13/2008 |
| 7352596 | Method of operating a resonant push-pull converter in an above resonant frequency mode A method for operating a push-pull converter in an above resonant frequency operating mode, where the above resonant frequency operating mode produces a switching frequency that is higher than the natural operating resonant frequency of the converter circuit. As a r... | 04/01/2008 |
| 7343017 | System for playback of pre-encoded signals through a parametric loudspeaker system A method and system for generating parametric output directly from a prerecorded and error corrected parametric signal for playback in a parametric loudspeaker system. The method includes the step of retrieving a pre-encoded audio signal from an electronically reada... | 03/11/2008 |
| 7254824 | Encoding optimization techniques for encoding program grid section of server-centric interactive programming guide An interactive program guide (IPG) may include a program grid section and a multimedia section. The program grid section typically contains program information organized in a grid with a time axis and a channel axis. The multimedia section may include video for adve... | 08/07/2007 |
| 7127737 | Bandwidth management techniques for delivery of interactive program guide Methods for managing delivery of video sequences of an interactive program guide (IPG) over a communications network to a plurality of terminals are provided. In one embodiment, the method pre-allocates a broadcast bandwidth in the communications network for common ... | 10/24/2006 |
| 7116256 | Pulse shaping apparatus and method A system has a first digital-to-analog (D/A) converter to receive a digital signal and to convert the digital signal into an analog pulse, a second D/A converter to cancel residual energy resulting from a previous pulse if a predetermined sequence of digital data is... | 10/03/2006 |
| 7096487 | Apparatus and method for combining realtime and non-realtime encoded content Methods for slice-based encoding of program guides and user interfaces. The program guides include multiple video streams for picture-in-picture and other applications. A method for encoding the program guide includes encoding a first set of slices for each of a plu... | 08/22/2006 |
| 7091968 | Method and apparatus for encoding a user interface A method and apparatus for combining video frame sequences with a video display of an interactive program guide (IPG). The apparatus comprises a plurality of compositors that combine background information, video frame sequences and program guide graphics into a sin... | 08/15/2006 |
| 7058965 | Multiplexing structures for delivery of interactive program guide Multiplexing structures presented overcome problems and disadvantages in the delivery of an interactive program guide. An apparatus for forming a multiplexed transport stream to deliver an interactive program guide includes: an encoder and packetizer adapted (i) to ... | 06/06/2006 |
| 6968567 | Latency reduction in providing interactive program guide Techniques presented reduce latencies or delays in the delivery of an interactive program guide. In accordance with a first technique, a method for providing an interactive program guide comprises: providing a plurality of transport streams; providing a group of int... | 11/22/2005 |
| 6934965 | System for generating, distributing and receiving an interactive user interface Method and apparatus for generating, transmitting and receiving a user interface for an interactive information distribution system. The user interface is generated in a head end of the system as a digital bitstream and transmitted to subscriber equipment for displa... | 08/23/2005 |
| 6904610 | Server-centric customized interactive program guide in an interactive television environment Techniques to create, generate, and deliver customized interactive program guide (custom-IPG). In one method, selections indicative of a set of channels to be included in the custom-IPG are received. In response, one or more custom-IPG screens having included therei... | 06/07/2005 |
| 6803964 | Method and apparatus for processing digital data A method and apparatus for synchronizing a data stream that contains video data in which the video data includes frames. As frames are being processed, a number of frames processed is identified along with a number of frames dropped during processing. A synchronizat... | 10/12/2004 |
| 6778761 | Information record medium, apparatus for recording the same and apparatus for reproducing the same An information recording apparatus (SS1) is provided with: a quantize device (72, 72B) for quantizing record information by 8×n bits; a divide device (72, 72D) for dividing the quantized record information quantized at one quantization timing, into (i... | 08/17/2004 |
| 6014495 | Information record medium, apparatus for recording the same and apparatus for reproducing the same An information recording apparatus (SS1) is provided with: a quantize device (72, 72B) for quantizing record information by 8×n bits; a divide device (72, 72D) for dividing the quantized record information quantized at one quantization timing, into (i) h... | 01/11/2000 |
| 5751504 | Digital video and audio signal recording apparatus A digital signal recording apparatus is arranged to be capable of permitting long-time recording on one and the same recording medium without impairing the quality of audio signals at all. The apparatus has a first mode in which a digital video signal sup... | 05/12/1998 |
| 5619383 | Method and apparatus for reading and writing audio and digital data on a magnetic tape A method and apparatus for recording and reading magnetic tape that contains audio signals and data that is related to the audio signals. In the preferred embodiment, the audio signals are music, and the related data are lyrics to the music displayed in r... | 04/08/1997 |
| 5511054 | Apparatus and method for multiplexing encoded data signals and recording medium having multiplexed signals recorded thereon A multiplexed data stream is formed by encoding a first input signal at a variable bit rate to form a first encoded data signal which is temporarily stored in a first storage device, encoding a second input signal at a constant bit rate to form a second e... | 04/23/1996 |
| 5479299 | Method of transmitting digital video and audio signals between bit rate reduction encoded signal recording and reproducing systems In a digital signal recording and reproducing apparatus, a signal obtained by multiplexing an audio signal on a bit rate reduction encoded video signal is delivered as a transmission signal. The transmission signal is multiplexed with a data showing its c... | 12/26/1995 |
| 5442451 | Helical scan recording/reproducing device for simultaneously helically recording/reproducing both video and audio signals A video tape recorder includes a cylinder provided to rotate about its axis. A magnetic tape moves along a portion of the cylinder surface such that the cylinder surface obliquely traverses the magnetic tape. At least one pair of magnetic heads are mounte... | 08/15/1995 |
| 5396372 | Audio signal recording and reproducing apparatus There is provided an audio signal magnetic recording and reproducing apparatus in which a frequency modulated luminance signal and a frequency modulated audio signal are sequentially recorded and reproduced onto/from the same magnetic tape as recording lo... | 03/07/1995 |
| 5359463 | Record/reproduce apparatus having means for switching automatically between different types of audio Apparatus is provided for recording and reproducing video and audio signals on a record medium, wherein the audio signal may be of at least two different types subjected to respectively different types of audio processing. A recording section produces fre... | 10/25/1994 |
| 5347405 | Magnetic recording correction circuit for reducing interference waves by third-degree inter-modulation distortions A magnetic recording correction circuit for a video tape recorder comprises a first multiplier supplied with a first signal to output a signal having a frequency which is twice as high as that of the first signal; a second multiplier supplied with a secon... | 09/13/1994 |
| 5327132 | Composite signal generation and decoding in digital signal processing automotive audio system A digital signal processing automotive audio system uses an analog audio source providing stereo output signals. One of the stereo signals is mixed to a distinct frequency band and summed with the other stereo signal to form a composite signal which can b... | 07/05/1994 |
| 5200864 | Combining small records into a single record block for recording on a record media Information bearing signals are recorded in one of a plurality of record formats on one record medium, such as a magnetic tape, magnetic disk, optical disk, and the like. The format selected may be commanded or based upon record lengths, in bytes. When th... | 04/06/1993 |
| 5187589 | Multiprogram video tape recording and reproducing device A video tape recording and reproducing device and a related method having a recording and a reproducing mode including a plurality of tuners for concomitantly receiving a plurality of television programs and generating a plurality of respective recording ... | 02/16/1993 |
| 5162920 | Information signal recording with time base correction facility apparatus An information signal recording apparatus of this invention records on a recording medium a signal which includes a first information signal and a second information signal which differs from the first information signal. It multiplexes the second informa... | 11/10/1992 |
| 5062008 | Recording of frequency-multiplex signal on recording medium An apparatus for producing a frequency-multiplex signal on the basis of a plurality of signals so as to record the produced frequency-multiplex signal on a recording medium, second signal having a frequency lower than that of the first signal. The apparat... | 10/29/1991 |
| 4788675 | Music delivery system A music delivery arrangement permitting a subscriber to select from among a plurality of available music selections, particular selections that he wishes to hear at any time. The plurality of music selections are "played" at a central "jukebox" facility. ... | 11/29/1988 |
| 4777539 | Process of recording time codes onto a video disk including periodic adjustment of time codes A video disk recording method and the recorded disk in which a video signal is frequency-multiplexed with a digital data signal into respective frames which are asynchronous to each other. A time code is recorded in both types of frames. The time is incre... | 10/11/1988 |
| 4724494 | Tracking apparatus responsive to multiple frequency-modulated carriers on different tracks In a recording apparatus frequency modulators (25-28) are provided for carriers having different frequencies with an information signal. The different frequency carriers are sequentially combined by a switch (12) and applied to a recording head in respons... | 02/09/1988 |
| 4719520 | Method and apparatus for setting recording current in perpendicular magnetic recording apparatus A method for superimposed recording of a first signal and a second signal with frequency which is less than the frequency for the first signal, in a perpendicular magnetic recording medium by means of a ring-shaped magnetic head. The mutually superimposed... | 01/12/1988 |
| 4692818 | Dual audio track recording system in which one track also contains a control signal In a cue recording system for a tape recorder, an audio signal is recorded by a first recording section on a first track of a tape. In a second recording section, a cue signal is superposed on the audio signal. The composite signal formed of the audio and... | 09/08/1987 |
| 4646168 | Perpendicular magnetic recording method A perpendicular magnetic recording method for recording two kinds of signals on a magnetic recording medium which has perpendicular magnetic anisotropy, recording the first kind of signal on the recording medium with a linear recording density higher than... | 02/24/1987 |
| 4507688 | Information recording apparatus Information recording apparatus includes a first recording mechanism for recording information at a certain location on a recording medium such as a tape, and a reproducing mechanism for reproducing the information recorded on the tape. A source of inform... | 03/26/1985 |
| 4481546 | Modulator-demodulator for obtaining and demodulating frequency-modulated signal A modulator-demodulator suited to record an audio signal in a recording medium in the form of a frequency-modulated signal and to demodulate the frequency-modulated signal is disclosed. It includes a voltage-controlled oscillator, a switching circuit for ... | 11/06/1984 |
| 4435734 | FM Video recording and reproducing system High resolution video signals of bandwidth up to 25 mHz are recorded magnetically or optically, or are transmitted on a communications channel carrier with superior fidelity by using novel electronic circuit system including implementations of an FM modul... | 03/06/1984 |
| 4425585 | Video tape recorder immune to third-order distortion noise A portable video tape recorder for broadcasting applications comprises a pair of video heads mounted diametrically opposite to each other on the circumference of a rotary cylinder. High and low frequency carriers are modulated by frequency modulators with... | 01/10/1984 |
| 4390917 | Device for detecting edge of magnetic tape for recording signals First and second contact members insulated from and bonded to the respective upper and lower surfaces of a magnetic head which is mounted on an operating member driven from a pulse motor are adapted to get out of the edge of a magnetic tape when the magne... | 06/28/1983 |
| 4383280 | Recorder with timing channel A recorder apparatus comprises a modulator, arranged to be fed with a carrier signal of a frequency at the low end of the audio spectrum (e.g. 80 Hz), for pulse modulating said signal with serialized data corresponding to a time code. A voltage controlled... | 05/10/1983 |
