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    • 3. 发明申请
    • Automatic direct memory access engine
    • 自动直接内存访问引擎
    • US20050036555A1
    • 2005-02-17
    • US10765813
    • 2004-01-27
    • Lakshmanan Ramakrishnan
    • Lakshmanan Ramakrishnan
    • H04N7/26H04N7/50H04N7/12
    • H04N19/423H04N19/44H04N19/61
    • Presented herein is an automatic direct memory access engine. In one embodiment, a decoder system for decoding video data, comprises a video decoder and a direct memory access engine. The video decoder decodes portions of the video data and comprises a local buffer and an extractor. The local buffer stores the portions of the video data. The extractor transmits a signal indicating that a portion of the local buffer is available to store another portion of the video data. The direct memory access engine provides the another portion of the video data to the portion of the local buffer, responsive to receiving the signal from the extractor.
    • 这里呈现的是自动直接存储器存取引擎。 在一个实施例中,用于解码视频数据的解码器系统包括视频解码器和直接存储器访问引擎。 视频解码器解码视频数据的部分,并且包括本地缓冲器和提取器。 本地缓冲器存储视频数据的部分。 提取器发送指示本地缓冲器的一部分可用于存储视频数据的另一部分的信号。 响应于接收到来自提取器的信号,直接存储器访问引擎将视频数据的另一部分提供给本地缓冲器的部分。
    • 5. 发明申请
    • Pixel reordering and selection logic prior to buffering
    • 缓冲之前的像素重排序和选择逻辑
    • US20050036060A1
    • 2005-02-17
    • US10799032
    • 2004-03-12
    • Mallinath HattiLakshmanan Ramakrishnan
    • Mallinath HattiLakshmanan Ramakrishnan
    • H04N9/64H04N11/20
    • H04N9/64
    • Presented herein are systems and methods for pixel reordering and selection. A decoded picture is stored in a frame buffer with a particular pixel order and byte order. A input data write unit fetches portions of the decoded picture and stores portions of the picture in a double buffer with the same pixel order and byte order. An endian swizzle converts the byte ordering to a predetermined format, as needed. Reordering logic changes the pixel order to a predetermined order. Selection logic selects luma and chroma pixels from fetched pixels and provides the luma pixels to a luma pixel register, chroma Cr pixels to a chroma Cr pixel register, and chroma Cb pixels to a chroma Cb pixel register.
    • 这里呈现的是用于像素重排序和选择的系统和方法。 解码图像被存储在具有特定像素顺序和字节顺序的帧缓冲器中。 输入数据写入单元取出解码图像的部分,并将图像的部分存储在具有相同像素顺序和字节顺序的双缓冲器中。 根据需要,字节序转换将字节顺序转换为预定格式。 重新排列逻辑将像素顺序改变为预定顺序。 选择逻辑从获取的像素中选择亮度和色度像素,并将亮度像素提供给亮度像素寄存器,色度Cr像素到色度Cr像素寄存器,色度Cb像素提供给色度Cb像素寄存器。
    • 10. 发明授权
    • Custom logic BIST for memory controller
    • 用于内存控制器的自定义逻辑BIST
    • US07496819B2
    • 2009-02-24
    • US10871235
    • 2004-06-18
    • Sathish KumarLakshmanan RamakrishnanLionel D'Luna
    • Sathish KumarLakshmanan RamakrishnanLionel D'Luna
    • G01R31/28G06F11/00
    • G11C29/02
    • A method and system for testing a memory controller are provided herein. A test sequence may be generated within the memory controller. A test output may also be generated within the memory controller, where the test output is associated with the test sequence. The test output may then be verified. The test sequence may comprise one or more of a control command, a memory address, and/or a DQM signal. The test output may be generated by a sequencer. The test output may be verified by a cyclic redundancy check (CRC) module. The test sequence may also comprise random write data. The random write data may be communicated to a memory controller write data output via a write data bus.
    • 本文提供了一种用于测试存储器控制器的方法和系统。 可以在存储器控制器内产生测试序列。 测试输出也可能在存储器控制器内产生,其中测试输出与测试序列相关联。 然后可以验证测试输出。 测试序列可以包括控制命令,存储器地址和/或DQM信号中的一个或多个。 测试输出可以由定序器产生。 测试输出可以通过循环冗余校验(CRC)模块来验证。 测试序列还可以包括随机写入数据。 随机写入数据可以经由写数据总线传送到存储器控制器写入数据输出。