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公开(公告)号：US20240297725A1
公开(公告)日：2024-09-05
申请号：US18574868
申请日：2021-06-30
发明人： Eugene Parrella , Robert Saizan
CPC分类号： H04H60/41 , H04H40/18 , H04H2201/18
摘要： A method performed by a radio receiver comprises: receiving digital radio broadcast (DRB) signals on respective frequency channels: acquiring a list that identifies which of the DRB signals are all-digital signals: receiving a tune command to tune to a particular DRB signal among the DRB signals; and upon determining that the particular DRB signal is an all-digital signal based on the list: playing muted audio: while playing muted audio, tuning to the particular DRB signal based on the tune command and performing digital signal acquisition of the particular DRB signal; and when the digital signal acquisition is complete, performing digital demodulation of the particular DRB signal to recover digital audio, and switching from playing muted audio to playing digital audio.
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公开(公告)号：US20240064448A1
公开(公告)日：2024-02-22
申请号：US18385680
申请日：2023-10-31
申请人： MAKITA CORPORATION
发明人： Kazunori TSUGE
CPC分类号： H04R1/028 , H04H40/18 , H01Q1/24 , G06F3/165 , F21L4/00 , F21V23/06 , F21V21/40 , F21L19/00 , H02J7/0042
摘要： An audio output device has a lantern part extends along a first axis, an antenna part, an audio output part, and a control part. The antenna part has a first end and a second end that are respectively connected to a first side and a second side relative to a central part of the lantern part in a first direction parallel to the first axis. A portion of the antenna part between the first end and the second end extends in the first direction and is spaced apart from the lantern part in a direction orthogonal to the first direction. The control part is configured to cause the audio output part to output sound corresponding to a radio broadcasting wave received by the antenna part.
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公开(公告)号：US11855825B2
公开(公告)日：2023-12-26
申请号：US17848132
申请日：2022-06-23
申请人： Nautel Limited
发明人： Philipp Schmid
CPC分类号： H04L27/2624 , H04H40/18 , H04L5/023 , H04L27/183 , H04H2201/18
摘要： According to an aspect of the present invention, there is provided a method for providing additional bandwidth to receivers that can decode a higher modulation comprising trading a peak-to-average power ratio (PAPR) reduction induced constellation noise of all or a subset of in-band on-channel (IBOC) carriers within an orthogonal frequency division multiplexing (ODFM) waveform with data carrying superposition modulation.
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公开(公告)号：US11509408B1
公开(公告)日：2022-11-22
申请号：US17473640
申请日：2021-09-13
发明人： Rajith Raman Pillai Indusekharan Nair , Prasanth Padmalayam Thankappan , Abdul Sameeh Parangodath , Aswin Karayee
摘要： Large data transmission in digital radio broadcasting system and method are disclosed. A first channel information of tuned frequency indicates the availability of the data distribution table. Second channel information contains the data distribution info table (list of frequencies mapped to data chunk identifiers). Data chunks have a unique id. Digital broadcast radio receiver receives data distribution tables and parses through the currently tuned frequencies data distribution table. The receiver has information on how to collect the distributed data. Receiver uses its primary tuner to receive the data chunks in the current tuned frequency. Rest of the data chunks are collected by the background tuners in a parallel fashion by tuning to required frequencies. Once all chunks are collected, data file is reconstructed and available for presentation to the user.
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公开(公告)号：US20220141564A1
公开(公告)日：2022-05-05
申请号：US17509744
申请日：2021-10-25
申请人： MAKITA CORPORATION
发明人： Kazunori TSUGE
摘要： An audio output device has a lantern part extends along a first axis, an antenna part, an audio output part, and a control part. The antenna part has a first end and a second end that are respectively connected to a first side and a second side relative to a central part of the lantern part in a first direction parallel to the first axis. A portion of the antenna part between the first end and the second end extends in the first direction and is spaced apart from the lantern part in a direction orthogonal to the first direction. The control part is configured to cause the audio output part to output sound corresponding to a radio broadcasting wave received by the antenna part.
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公开(公告)号：US11190334B2
公开(公告)日：2021-11-30
申请号：US16880070
申请日：2020-05-21
发明人： Brian W. Kroeger , Paul J. Peyla
IPC分类号： H04L12/18 , H04H40/18 , H04H40/00 , H04H60/00 , H04H20/18 , H04L7/00 , H04H20/30 , H04H60/12
摘要： A method for processing audio signals in a radio transmitter, includes: receiving an analog audio sample stream and a digital audio sample stream; determining offsets in time between the analog audio stream and the digital audio stream using a normalized cross-correlation of audio envelopes of the analog audio sample stream and the digital audio sample stream; filtering the determined offsets in time to produce filtered offset values; determining an alignment slip adjustment value as a function of the filtered offset values; aligning the analog audio sample stream and the digital audio sample stream using the determined alignment slip adjustment value; and generating a hybrid radio signal for broadcast that includes time-aligned analog audio and digital audio.
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公开(公告)号：US11108482B2
公开(公告)日：2021-08-31
申请号：US14744808
申请日：2015-06-19
申请人： 3D RADIO LLC
IPC分类号： H04H60/46 , H04H60/16 , H04B1/20 , H04H60/27 , H04H60/33 , H04M1/60 , H04H60/37 , H04M1/72403 , H04M1/72442 , H04H60/80 , H04H40/18 , H04H60/82 , H04H60/72 , H04H60/51 , H04H60/63 , H04H20/34 , H04H60/43 , H04H60/58 , H04H60/74 , H04H60/85 , H04H60/91 , H04H60/17 , H04H60/65 , H04H60/40 , H04H60/47
摘要： An enhanced radio system is disclosed that provides for the capture and playback of one or more radio stations. A user may tune to a station, scan through stations, rewind through missed content (even while the system is off), and fast-forward through undesired content, while downloading and uploading audio content, and sending content to another user. A user may rate content, and be notified when that content is played on any station, with undesirable content skipped and desirable content saved, or station recommendations made. Support for multiple sets of configuration information to allow use by multiple listeners and in multiple locations may be provided. Optionally provided are security features to prevent the unauthorized downloading, uploading, and saving of copies of content, other radio related and content related information, a karaoke mode, integration with a telephone with the radio, or reporting usage information to a collection facility.
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公开(公告)号：US10812207B2
公开(公告)日：2020-10-20
申请号：US16482390
申请日：2018-02-28
发明人： Satoshi Okada , Kazuyuki Takahashi , Takeshi Ohno
摘要： A reception apparatus includes a demodulation circuit configured to demodulate packets obtained with respect to each of multiple PLPs included in a broadcast signal; and a processing circuit configured to process the packets demodulated by the demodulation circuit. The demodulation circuit and the processing circuit are connected with each other via a single interface or interfaces fewer than the number of the PLPs. The demodulation circuit adds identification information to a specific packet among the packets obtained with respect to each of the PLP, the identification information identifying the PLP to which each of the packets belongs. The processing circuit identifies the PLP to which belongs each of the packets input from the demodulation circuit via the single interface or the interfaces fewer than the number of the PLPs, based on the identification information obtained from the specific packet.
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公开(公告)号：US10763912B2
公开(公告)日：2020-09-01
申请号：US16667566
申请日：2019-10-29
发明人： Koichi Asaka
摘要： A demodulation apparatus according to the present disclosure includes an analog audio demodulator, a digital audio demodulator, a selection circuit, and a noise addition circuit. The analog audio demodulator demodulates a received signal of an analog radio broadcast wave into an analog audio signal and outputs the analog audio signal. The digital audio demodulator demodulates a received signal of a digital radio broadcast wave into a digital audio signal and outputs the digital audio signal, the analog/digital radio broadcast waves including audio signals indicative of a same content and being broadcasted simultaneously. The selection circuit selects either the analog audio signal or the digital audio signal. The noise addition circuit adds noise to the digital audio signal in a first period including a switching period for switching from a state where the analog audio signal is selected to a state where the digital audio signal is selected.
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公开(公告)号：US10723326B2
公开(公告)日：2020-07-28
申请号：US15721481
申请日：2017-09-29
申请人： Google Inc.
IPC分类号： H04L29/06 , B60S1/68 , H04N21/2747 , H04N21/239 , H04N21/2187 , H04N21/262 , H04N21/845 , H04N21/61 , H04N21/472 , B60H1/00 , H05B3/20 , H04H40/18 , H04L29/08
摘要： Content capture and distribution systems and techniques are described. In an example, radio frequency signals that carry content are captured by one or more antennas of a content capture system. The content is converted from radio frequency signals the carry the content into an internet protocol format by the content capture system. The converted content is transmitted by the content capture system via a network transfer protocol (e.g., HTTP) for receipt by a content distribution system via a network. The converted content is configured by the content distribution system for streaming via a network streaming protocol. The content is then streamed by the content distribution system via the network using the network streaming protocol for receipt and rendering by at least one client device.
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