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公开(公告)号：US10255926B2
公开(公告)日：2019-04-09
申请号：US15926536
申请日：2018-03-20
摘要： A method of processing a digital radio broadcast signal includes: (a) determining a plurality of current correlation sample values representative of a time delay between samples in an analog audio sample stream and samples in a digital audio sample stream; (b) determining a current inversion status; (c) updating a delay history and an inversion status history; (d) checking the current correlation sample values for consistency with a first confidence threshold; (e) if consistency is found in step (d), determining if each of a first plurality of values in the delay history is consistent within a predetermined range of the current correlation sample values; (f) if consistency is found in step (e), determining if a value in the inversion status history is consistent with the current inversion status; and (g) if the consistency is found in step (f), allowing blending of an output to the digital audio sample stream.
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公开(公告)号：US09755598B2
公开(公告)日：2017-09-05
申请号：US14974809
申请日：2015-12-18
CPC分类号： H03G3/3005 , G10L19/167 , H03G3/002 , H04H20/22 , H04H20/26 , H04H20/47 , H04H40/36 , H04H2201/18
摘要： A method for processing a digital audio broadcast signal includes: separating an analog audio portion and a digital audio portion of the digital audio broadcast signal; determining the loudness of the analog audio portion and the digital audio portion over a first short time interval; using the loudness of the analog and digital audio portions to calculate a short term average gain; determining a long term average gain; converting one of the long term average gain or the short term average gain to dB; if an output has been blended to digital, adjusting a digital gain parameter by a preselected increment to produce a digital gain parameter; if an output has not been blended to digital, setting the digital gain parameter to the short term average gain; providing the digital gain parameter to an audio processor; and repeating the above steps using a second short time interval.
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公开(公告)号：US11790774B2
公开(公告)日：2023-10-17
申请号：US17943364
申请日：2022-09-13
IPC分类号： G08G1/07
CPC分类号： G08G1/07
摘要： A method comprises: generating a traffic sign message configured to configure an active traffic sign that is electronically configurable; encrypting the traffic sign message to produce an encrypted traffic sign message; sending the encrypted traffic sign message to a radio broadcast transmitter; and at the radio broadcast transmitter, transmitting the encrypted traffic sign message in a radio broadcast signal; and at the active traffic sign: receiving the radio broadcast signal and recovering the encrypted traffic sign message from the radio broadcast signal; decrypting the encrypted traffic sign message to produce the traffic sign message; and configuring the active traffic sign according to the traffic sign message.
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公开(公告)号：US09947332B2
公开(公告)日：2018-04-17
申请号：US14966716
申请日：2015-12-11
IPC分类号： H04B1/16 , G10L19/16 , G10L19/008 , G10L19/24
CPC分类号： G10L19/167 , G10L19/008 , G10L19/24 , H04B1/16 , H04H20/30 , H04H60/12 , H04H2201/183
摘要： A method of processing a digital radio broadcast signal includes: (a) determining a plurality of current correlation sample values representative of a time delay between samples in an analog audio sample stream and samples in a digital audio sample stream; (b) determining a current inversion status; (c) updating a delay history and an inversion status history; (d) checking the current correlation sample values for consistency with a first confidence threshold; (e) if consistency is found in step (d), determining if each of a first plurality of values in the delay history is consistent within a predetermined range of the current correlation sample values; (f) if consistency is found in step (e), determining if a value in the inversion status history is consistent with the current inversion status; and (g) if the consistency is found in step (f), allowing blending of an output to the digital audio sample stream.
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公开(公告)号：US20230005365A1
公开(公告)日：2023-01-05
申请号：US17943364
申请日：2022-09-13
IPC分类号： G08G1/07
摘要： A method comprises: generating a traffic sign message configured to configure an active traffic sign that is electronically configurable; encrypting the traffic sign message to produce an encrypted traffic sign message; sending the encrypted traffic sign message to a radio broadcast transmitter; and at the radio broadcast transmitter, transmitting the encrypted traffic sign message in a radio broadcast signal; and at the active traffic sign: receiving the radio broadcast signal and recovering the encrypted traffic sign message from the radio broadcast signal; decrypting the encrypted traffic sign message to produce the traffic sign message; and configuring the active traffic sign according to the traffic sign message.
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公开(公告)号：US20170179899A1
公开(公告)日：2017-06-22
申请号：US14974809
申请日：2015-12-18
CPC分类号： H03G3/3005 , G10L19/167 , H03G3/002 , H04H20/22 , H04H20/26 , H04H20/47 , H04H40/36 , H04H2201/18
摘要： A method for processing a digital audio broadcast signal includes: separating an analog audio portion and a digital audio portion of the digital audio broadcast signal; determining the loudness of the analog audio portion and the digital audio portion over a first short time interval; using the loudness of the analog and digital audio portions to calculate a short term average gain; determining a long term average gain; converting one of the long term average gain or the short term average gain to dB; if an output has been blended to digital, adjusting a digital gain parameter by a preselected increment to produce a digital gain parameter; if an output has not been blended to digital, setting the digital gain parameter to the short term average gain; providing the digital gain parameter to an audio processor; and repeating the above steps using a second short time interval.
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公开(公告)号：US20240235709A1
公开(公告)日：2024-07-11
申请号：US18030930
申请日：2021-10-07
IPC分类号： H04H60/13 , G06F8/65 , H04H60/06 , H04W12/037 , H04W60/00
CPC分类号： H04H60/13 , G06F8/65 , H04H60/06 , H04W12/037 , H04W60/00
摘要： A method of controlling operation of an end device using a one-way radio broadcast includes sending an encrypted message from a client application of a computing device to a first network server, sending the encrypted message from the first network server to a second server included with radio broadcast automation equipment, transmitting the encrypted message in a radio broadcast signal using one or more radio broadcast transmitters, receiving the radio broadcast signal at an end device, and decrypting the encrypted message using the end device. The encrypted message includes control information to control operation of the end device.
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公开(公告)号：US20230422028A1
公开(公告)日：2023-12-28
申请号：US18030896
申请日：2021-10-07
摘要： A server includes a communication port connected to an internet of things (IoT) cloud, at least one hardware processor connected to the communication port, and memory including instructions. The instructions, when performed by the at least one hardware processor, cause the at least one hardware processor to perform operations comprising identifying, to a client application of a separate computing device, one or more available radio broadcast stations available for transmitting a message in a radio broadcast signal to one or more end devices of an IoT; receiving a message from the client application indicating one or more of the available radio broadcast stations for transmitting the message; and sending the encrypted message via the IoT cloud to one or more other servers included with radio broadcast automation equipment of the one or more indicated available radio broadcast stations.
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公开(公告)号：US20180308499A1
公开(公告)日：2018-10-25
申请号：US15926536
申请日：2018-03-20
CPC分类号： G10L19/167 , G10L19/008 , G10L19/24 , H04B1/16 , H04H20/30 , H04H60/12 , H04H2201/183
摘要： A method of processing a digital radio broadcast signal includes: (a) determining a plurality of current correlation sample values representative of a time delay between samples in an analog audio sample stream and samples in a digital audio sample stream; (b) determining a current inversion status; (c) updating a delay history and an inversion status history; (d) checking the current correlation sample values for consistency with a first confidence threshold; (e) if consistency is found in step (d), determining if each of a first plurality of values in the delay history is consistent within a predetermined range of the current correlation sample values; (f) if consistency is found in step (e), determining if a value in the inversion status history is consistent with the current inversion status; and (g) if the consistency is found in step (f), allowing blending of an output to the digital audio sample stream.
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10.再颁专利公开(公告)号：USRE49210E1
公开(公告)日：2022-09-13
申请号：US16556658
申请日：2019-08-30
摘要： A method for processing a digital audio broadcast signal includes: separating an analog audio portion and a digital audio portion of the digital audio broadcast signal; determining the loudness of the analog audio portion and the digital audio portion over a first short time interval; using the loudness of the analog and digital audio portions to calculate a short term average gain; determining a long term average gain; converting one of the long term average gain or the short term average gain to dB; if an output has been blended to digital, adjusting a digital gain parameter by a preselected increment to produce a digital gain parameter; if an output has not been blended to digital, setting the digital gain parameter to the short term average gain; providing the digital gain parameter to an audio processor; and repeating the above steps using a second short time interval.
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