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1. 发明授权

US08055116B2 Method and system for providing audio-only recording of an audio/video signal 失效
标题翻译：用于提供音频/视频信号的仅音频记录的方法和系统
公开(公告)号：US08055116B2
公开(公告)日：2011-11-08
申请号：US11191490
申请日：2005-07-27
申请人： Mohammad Ayub Khan , Haroon Ur Rashid , Muhammad Israr Khan , Mushtaq Ahmad Mughal
发明人： Mohammad Ayub Khan , Haroon Ur Rashid , Muhammad Israr Khan , Mushtaq Ahmad Mughal
IPC分类号： H04N5/765
CPC分类号： G11B27/034
摘要： A method for providing audio-only recording is disclosed. According to the method, a combined video stream and an audio stream are received from a source. The audio stream is digitized, if in analog form. The digitized audio stream is compressed using an audio encoding engine. The encoded audio stream is saved in a storage device. The storage device can be local or on a network. In the case of the input A/V signal being a multiplexed and compressed digital signal, the audio segment(s) are separated using a demultiplexer and saved in a storage device. The encoding format of the stored audio data follows that of the original audio data embedded in the multiplexed A/V stream. To store the audio data in a different encoded format, the audio data is first decoded using an appropriate audio decoder and then re-encoded in the desired encoding format. Alternatively, an audio transcoder can be used to store the audio data in the desired encoding format.
摘要翻译：公开了一种用于提供仅音频记录的方法。根据该方法，从源接收组合视频流和音频流。音频流数字化，如果是模拟形式。使用音频编码引擎对数字化的音频流进行压缩。经编码的音频流保存在存储设备中。存储设备可以是本地的或网络上的。在输入A / V信号是多路复用和压缩的数字信号的情况下，使用解复用器分离音频片段并将其保存在存储装置中。所存储的音频数据的编码格式跟随嵌入在复用的A / V流中的原始音频数据的编码格式。为了以不同的编码格式存储音频数据，首先使用适当的音频解码器对音频数据进行解码，然后以期望的编码格式重新编码。或者，可以使用音频代码转换器来以所需的编码格式存储音频数据。

2. 发明授权

US08718440B2 Decentralized symmetric network of autonomous digital video recorders and its method of use 失效
标题翻译：自主数字录像机分散对称网络及其使用方法
公开(公告)号：US08718440B2
公开(公告)日：2014-05-06
申请号：US13053230
申请日：2011-03-22
申请人： Mohammad Ayub Khan , Mushtaq Ahmad Mughal , Adnan Obaid , Haris Sarwar , Yousra Yousaf Alvi , Haroon Ur Rashid , Atif Raza
发明人： Mohammad Ayub Khan , Mushtaq Ahmad Mughal , Adnan Obaid , Haris Sarwar , Yousra Yousaf Alvi , Haroon Ur Rashid , Atif Raza
IPC分类号： H04N5/932
CPC分类号： H04N5/765 , H04N21/4147 , H04N21/4332 , H04N21/4334 , H04N21/43622
摘要： The present invention describes a decentralized symmetric configuration of digital video recorders (DVCRs) for monitoring, controlling, analyzing, recording, playback and streaming of audio/visual (A/V) media over a network. Each DVCR is an autonomous device able to operate in its local environment as well as access and operate another DVCR available on the network to facilitate the overall working of the disclosed system. Each DVCR also exhibits storage fail-safe feature whereby it recovers data automatically if storage media gets corrupted such as due to sudden power failure. A DVCR can be configured to scan the network for other DVCR units. A list of discovered DVCRs is displayed. Each DVCR can access, after authentication, any of the listed DVCR for configuration, monitoring, controlling, recording, playback and other available functionality over the network. The same controls used for operating a local DVCR, including use of buttons, can be employed to operate the remote DVCR, giving a virtual presence at the remote location. The functionality exhibited by each of the DVCR, can be identical. A plurality of the DVCR can thus form a decentralized, symmetric network in which there is no master or central controller.
摘要翻译：本发明描述了用于通过网络监视，控制，分析，记录，回放和流式传输音频/视频（A / V）媒体的数字录像机（DVCR）的分散对称配置。每个DVCR是能够在其本地环境中操作以及访问和操作网络上可用的另一个DVCR的自主设备，以便于所公开系统的整体工作。每个DVCR还展示存储故障安全功能，如果存储介质由于突然的电源故障而被破坏，它将自动恢复数据。 DVCR可以配置为扫描其他DVCR设备的网络。显示已发现的DVCR列表。每个DVCR在认证之后可以通过网络访问列出的所有DVCR以进行配置，监视，控制，记录，播放和其他可用功能。用于操作本地DVCR的相同控件（包括使用按钮）可用于操作远程DVCR，从而在远程位置提供虚拟存在。 DVCR中的每个显示的功能可以相同。因此，多个DVCR可以形成分散的对称网络，其中不存在主控制器或中央控制器。

3. 发明授权

US07471875B2 Method and system for providing instant reverse play 失效
标题翻译：提供即时反向播放的方法和系统
公开(公告)号：US07471875B2
公开(公告)日：2008-12-30
申请号：US11182158
申请日：2005-07-15
申请人： Mushtaq Ahmad Mughal , Abid Khan , Mumtaz Ahmad , Haroon Ur Rashid
发明人： Mushtaq Ahmad Mughal , Abid Khan , Mumtaz Ahmad , Haroon Ur Rashid
IPC分类号： H04N5/91
CPC分类号： H04N9/8042 , H04N5/781 , H04N5/783
摘要： A method for displaying video data instantly in reverse order is disclosed. According to the method, a compressed audio and video (A/V) stream is received from a source. The compressed A/V stream is demultiplexed into an audio stream and a video stream. The video stream has a number of compressed video frames which include a number of key frames. Each key frame is followed by one or more associated frames. Each of the compressed video frames is tagged with a tag. The tag associated with each key frame and file position of each key frame is stored in a table. The compressed video frames are decoded to generate a number of decoded video frames while maintaining their corresponding tags. During normal play, the decoded video frames are stored in a forward queue, and the decoded video frames in the forward queue are then outputted in a FIFO (first-in-first-out) order to a reverse queue and a display device for display. The reverse queue operates in a FIFO manner by discarding the oldest decoded video frame stored in the reverse queue when the reverse queue is full. During reverse play, the tag of the oldest decoded video frame in the reverse queue is recorded when a reverse play command is received, and the decoded video frames in the reverse queue are outputted in a LIFO (last-in-first-out) order to the forward queue and the display device for display. At the start of the reverse play, the forward queue operates in a LIFO manner until the most recently decoded video frames stored in the forward queue are discarded. Thereafter, the forward queue and the reverse queue operate in a FIFO manner. The recorded tag is used to retrieve one or more compressed video frames from the source. The retrieved one or more compressed video frames are tagged and decoded to generate one or more newly decoded video frames. The one or more newly decoded video frames are forwarded to the reverse queue.
摘要翻译：公开了以相反的顺序立即显示视频数据的方法。根据该方法，从源接收压缩的音频和视频（A / V）流。压缩的A / V流被解复用为音频流和视频流。视频流具有包括多个关键帧的多个压缩视频帧。每个关键帧之后是一个或多个相关联的帧。每个压缩视频帧都标记有一个标签。与每个关键帧的每个关键帧和文件位置相关联的标签存储在表中。对压缩的视频帧进行解码以产生多个解码的视频帧，同时保持其对应的标签。在正常播放期间，将解码的视频帧存储在前向队列中，然后将前向队列中的解码视频帧以FIFO（先进先出）顺序输出到反向队列和用于显示的显示装置。反向队列通过在反向队列已满时丢弃存储在反向队列中的最旧解码视频帧，以FIFO方式运行。在反向播放期间，当接收到反向播放命令时，记录反向队列中最旧的解码视频帧的标签，并且以LIFO（先进先出）顺序输出反向队列中的解码视频帧到转发队列和显示设备进行显示。在反向播放开始时，前向队列以LIFO方式运行，直到丢弃存储在转发队列中的最近解码的视频帧。此后，前向队列和反向队列以FIFO方式运行。记录的标签用于从源中检索一个或多个压缩视频帧。检索到的一个或多个压缩视频帧被标记和解码以产生一个或多个新解码的视频帧。一个或多个新解码的视频帧被转发到反向队列。

4. 发明申请

US20180268238A1 SYSTEM AND METHODS FOR ENHANCING LICENSE PLATE AND VEHICLE RECOGNITION 审中-公开
公开(公告)号：US20180268238A1
公开(公告)日：2018-09-20
申请号：US15458259
申请日：2017-03-14
申请人： Mohammad Ayub Khan
发明人： Mohammad Ayub Khan , Syed Muhammad Ziauddin , Imran Ul Haq , Syed Ali Hassan , Moeen Tayyab , Haroon Ur Rashid
IPC分类号： G06K9/32 , G08G1/017 , G06K9/18 , G06K9/62 , G06F17/30
摘要： A system and methods are disclosed for enhancing license plate recognition (LPR) and vehicle feature recognition processes in automatic vehicle access control, parking management, automatic toll collection and security applications. The system uses optical character recognition (OCR) to read license plates, while utilizing image feature recognition to verify plate reading results, and correct any OCR read errors, thereby increasing system accuracy. The system automatically controls the actuation of one or a plurality of gates/barriers to allow entry and exit of authorized vehicles to or from a premises, a parking lot or a toll station. In the event of failure of the OCR algorithm to identify a license plate of an authorized vehicle at an entry or exit point, the system allows a human operator or the driver/passenger of the said authorized vehicle to override its decision, and allow the vehicle to pass by opening the gate or barrier through external means including card reader, bio-metric scanner, key fob, cell-phone/smart phone, wireless transceiver, electro-mechanical switch/button, or PC/Web based application. This overriding action of opening the gate/barrier through the said external means is used to tune the license plate and vehicle recognition system, causing it to adapt its algorithms to perform better when it encounters the same vehicle again. Besides the above aspect, the present invention discloses fast and memory-efficient methods for image feature matching that are well suited for real-time situations where the set of reference image features is changing with time as new vehicles arrive. In addition to the above aspects, the present invention discloses an LPR database update method that simplifies license plate misread corrections process in the database, thereby improving the accuracy of subsequent database search queries. Furthermore, the present invention discloses methods in an LPR system that account for all the passing traffic by categorizing and recording license plate/vehicle captures as read-plate records, unread-plate records, or vehicles with missing license plates. In addition to the above aspects, the present invention discloses methods for switching between normal and privacy modes of operation and between different security levels.

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