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1. 发明授权

US5819004A Method and system for a user to manually alter the quality of previously encoded video frames 失效
标题翻译：用于用户手动改变先前编码的视频帧的质量的方法和系统
公开(公告)号：US5819004A
公开(公告)日：1998-10-06
申请号：US466391
申请日：1995-06-06
申请人： Faramarz Azadegan , Jay Yogeshwar , Sheau-Bao Ng , David Lehmann , Mikhail Tsinberg , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew Drusin Rosen
发明人： Faramarz Azadegan , Jay Yogeshwar , Sheau-Bao Ng , David Lehmann , Mikhail Tsinberg , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew Drusin Rosen
IPC分类号： H04N5/92 , G06T9/00 , G11B27/031 , G11B27/034 , G11B27/30 , G11B27/32 , G11B27/34 , G11B27/36 , H04N5/91 , H04N5/926 , H04N7/26 , H04N7/30 , H04N7/32 , H04N7/36 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , H04N5/76
CPC分类号： H04N9/8063 , G11B27/031 , G11B27/034 , G11B27/34 , G11B27/36 , H04N19/115 , H04N19/124 , H04N19/15 , H04N19/154 , H04N19/157 , H04N19/159 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/192 , H04N19/503 , H04N19/60 , H04N19/61 , H04N5/9262 , H04N7/52 , H04N9/8042 , G11B2220/2562 , G11B2220/90 , G11B2220/913 , G11B27/3027 , G11B27/329 , H04N19/146 , H04N19/30
摘要： A method and system in which a user manually changes the quality of portions of video frames after the frames have been previously encoded. Regions of one or more frames of video are selected to have an increased quality, a decreased quality, or a quality which should not be altered. After the regions are defined by a user, the frame of video is digitally re-encoded and inserted into the digitally encoded data stream in place of the previously encoded data. In order to easily remove a previously encoded frame from the data steam and replace it with a newly encoded frame having regions of quality defined by the user, it is preferable to have the newly encoded frame consume the same number of bits as the previously encoded frame. Accordingly, if the user desires a region of a frame to have an increased quality, the extra bits necessary to provide the increased quality must be taken from other areas of the frame. This is accomplished by an automatic process which is transparent to the user. Additionally, if the user wants to change the quality of an object for a series of video frames, the user can mark a region in a first frame and a corresponding region in a last frame and the system will automatically adjust the quality of the region as the region moves through the series of video frames.
摘要翻译：一种方法和系统，其中用户在预先编码帧之后手动地改变视频帧的部分的质量。选择一个或多个视频帧的区域具有增加的质量，降低的质量或不应该改变的质量。在由用户定义区域之后，视频帧被数字地重新编码并插入数字编码的数据流中，代替先前编码的数据。为了容易地从数据流中去除先前编码的帧，并用具有由用户定义的质量区域的新编码帧替换，优选地，新编码的帧消耗与先前编码的帧相同的比特数。因此，如果用户期望帧的区域具有增加的质量，则必须从帧的其他区域获取提供增加的质量所需的额外比特。这是通过对用户透明的自动过程来实现的。此外，如果用户想要改变一系列视频帧的对象的质量，则用户可以标记最后一帧中的第一帧和对应区域中的区域，并且系统将自动地将区域的质量调整为该区域移动通过一系列视频帧。

2. 发明授权

US5838874A Audiovisual encoding system with a reduced number of audio encoders 失效
标题翻译：具有减少数量的音频编码器的视听编码系统
公开(公告)号：US5838874A
公开(公告)日：1998-11-17
申请号：US467991
申请日：1995-06-06
申请人： Sheau-Bao Ng , Mikhail Tsinberg , Masaru Sakurai , David Lehmann , Jay Yogeshwar , Faramarz Azadegan , Teiichi Ichikawa , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew Drusin Rosen
发明人： Sheau-Bao Ng , Mikhail Tsinberg , Masaru Sakurai , David Lehmann , Jay Yogeshwar , Faramarz Azadegan , Teiichi Ichikawa , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew Drusin Rosen
IPC分类号： H04N5/92 , G06T9/00 , G11B27/031 , G11B27/034 , G11B27/30 , G11B27/32 , G11B27/34 , G11B27/36 , H04N5/91 , H04N5/926 , H04N7/26 , H04N7/30 , H04N7/36 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , H04N5/76 , H04N5/928
CPC分类号： H04N9/8063 , G11B27/031 , G11B27/034 , G11B27/34 , G11B27/36 , H04N19/115 , H04N19/124 , H04N19/15 , H04N19/154 , H04N19/157 , H04N19/159 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/192 , H04N19/503 , H04N19/60 , H04N19/61 , H04N5/9262 , H04N7/52 , H04N9/8042 , G11B2220/2562 , G11B2220/90 , G11B2220/913 , G11B27/3027 , G11B27/329 , H04N19/146 , H04N19/30
摘要： An audiovisual encoding system using a multipass video encoder and a plurality of one-pass audio encoders. The number of audio encoders used by the system is equal to the number of audio tracks to be encoded divided by the number of passes required for the video encoding rounded up to the nearest integer, if necessary. The system allows the video encoder and audio encoders to be used at the same time so that the encoding of the video is completed at the same time as the encoding of all audio tracks is completed, using the minimum number of audio encoders.
摘要翻译：一种使用多通道视频编码器和多个单声道音频编码器的视听编码系统。如果需要，系统使用的音频编码器的数量等于要编码的音轨的数量除以被舍入到最接近的整数的视频编码所需的传递次数。该系统允许同时使用视频编码器和音频编码器，使得在使用最少数量的音频编码器完成所有音轨的编码的同时完成视频的编码。

3. 发明授权

US5684714A Method and system for a user to manually alter the quality of a previously encoded video sequence 失效
标题翻译：用于用户手动改变先前编码的视频序列的质量的方法和系统
公开(公告)号：US5684714A
公开(公告)日：1997-11-04
申请号：US469370
申请日：1995-06-06
申请人： Jay Yogeshwar , Faramarz Azadegan , Sheau-Bao Ng , David Lehmann , Mikhail Tsinberg , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew Drusin Rosen
发明人： Jay Yogeshwar , Faramarz Azadegan , Sheau-Bao Ng , David Lehmann , Mikhail Tsinberg , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew Drusin Rosen
IPC分类号： H04N5/92 , G06T9/00 , G11B20/10 , G11B20/12 , G11B27/00 , G11B27/031 , G11B27/034 , G11B27/30 , G11B27/32 , G11B27/34 , G11B27/36 , H04N5/926 , H04N7/26 , H04N7/30 , H04N7/36 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , H04N5/76
CPC分类号： H04N9/8063 , G11B27/031 , G11B27/034 , G11B27/34 , G11B27/36 , H04N19/115 , H04N19/124 , H04N19/15 , H04N19/154 , H04N19/157 , H04N19/159 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/192 , H04N19/503 , H04N19/60 , H04N19/61 , H04N5/9262 , H04N7/52 , H04N9/8042 , G11B2220/2562 , G11B2220/90 , G11B2220/913 , G11B27/3027 , G11B27/329 , H04N19/146 , H04N19/30
摘要： A method and system in which a user manually changes the quality of specific time periods of encoded video. After the automatic encoding of video into a compressed digital format, a person editing the encoded video reviews the quality of the video and manually indicates that the quality of specific time periods of the video is to be altered. As the digital storage medium such as an optical disc which stores the encoded video has a finite storage capacity, the total number of bits for the encoded video and the quality of the video is limited. Consequently, in order to increase the quality for one time period, bits must be taken from other time periods. After the editor assigns the qualities to different time periods, a percentage of bits is removed from the time sequences and placed into a bit pool. The new number of bits for the various time periods are calculated using an exponential function and the bits in the bit pool are proportionally distributed to the video frames. The frames must then be checked and possibly adjusted to assure that underflow of the video buffer will not occur. After the underflow checking procedure, the video is re-encoded with an adjusted quantization in accordance with a quantizer model which will result in a picture having the calculated number of bits and a quality in accordance with the user's selection.
摘要翻译：一种方法和系统，其中用户手动地改变编码视频的特定时间段的质量。在将视频自动编码成压缩数字格式之后，编辑视频的人回顾视频的质量，并手动指示视频的特定时间段的质量将被改变。由于诸如存储编码视频的光盘的数字存储介质具有有限的存储容量，所以编码视频的总位数和视频的质量受到限制。因此，为了提高一个时间段的质量，必须从其他时间段获取位。在编辑器将质量分配给不同的时间段后，从时间序列中删除比特的百分比并将其放入位池。使用指数函数计算各个时间段的新的比特数，并且比特池中的比特按比例分配给视频帧。然后必须检查并可能调整帧，以确保视频缓冲区的下溢不会发生。在下溢检查过程之后，根据量化器模型，利用经调整的量化重新编码视频，该量化器模型将导致具有根据用户选择的计算的位数和质量的图像。

4. 发明授权

US5623424A Rate-controlled digital video editing method and system which controls bit allocation of a video encoder by varying quantization levels 失效
标题翻译：速率控制的数字视频编辑方法和系统，其通过改变量化级别来控制视频编码器的比特分配
公开(公告)号：US5623424A
公开(公告)日：1997-04-22
申请号：US466766
申请日：1995-06-06
申请人： Faramarz Azadegan , Tomoo Yamakage , Shin-ichiro Koto , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew D. Rosen
发明人： Faramarz Azadegan , Tomoo Yamakage , Shin-ichiro Koto , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura , Christopher J. Cookson , Greg B. Thagard , Andrew D. Rosen
IPC分类号： H04N5/92 , G06T9/00 , G11B20/10 , G11B27/02 , G11B27/031 , G11B27/034 , G11B27/30 , G11B27/32 , G11B27/34 , G11B27/36 , H04N5/926 , H04N7/26 , H04N7/30 , H04N7/36 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , G06F17/00
CPC分类号： H04N9/8063 , G11B27/031 , G11B27/034 , G11B27/34 , G11B27/36 , H04N19/115 , H04N19/124 , H04N19/15 , H04N19/154 , H04N19/157 , H04N19/159 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/192 , H04N19/503 , H04N19/60 , H04N19/61 , H04N5/9262 , H04N7/52 , H04N9/8042 , G11B2220/2562 , G11B2220/90 , G11B2220/913 , G11B27/3027 , G11B27/329 , H04N19/146 , H04N19/30
摘要： A method and system for re-encoding frames of a digital video stream in which selected areas are designated to have increased or reduced image quality, i.e., decreased or increased quantization levels, respectively, as compared to a previously run automatic encoding process, but without changing the previously calculated bit length of the stream. A set of macroblocks at a time are re-encoded, the number of resulting bits is calculated and the deviation from an estimated number of bits is calculated, either set-by-set or cumulatively. Based on the accuracy of the estimate and the remaining number of sets of macroblocks to re-encode, a correction factor for the quantization level of the next set of macroblocks is chosen from a lookup table. The correction factor is added to the quantization level of the next set of macroblocks and the results stored as the new quantization level of the set. This sequential process is done for all sets of macroblocks in the digital stream which are to be recoded according to changed image qualities.
摘要翻译：一种用于重新编码数字视频流的帧的方法和系统，其中与先前运行的自动编码过程相比，所选区域被指定为分别具有增加或降低的图像质量，即分别减小或增加的量化级别，但是没有改变以前计算的流的位长度。一次重新编码一组宏块，计算所得到的比特数，并计算与估计的比特数的偏差，即逐个设置或累加。基于估计的准确性和重新编码的宏块的剩余数量，从查找表中选择下一组宏块的量化级的校正因子。校正因子被添加到下一组宏块的量化级，并且将结果存储为该组的新量化级。对于将根据改变的图像质量重新编码的数字流中的所有宏块集合来完成该顺序处理。

5. 发明授权

US5612900A Video encoding method and system which encodes using a rate-quantizer model 失效
标题翻译：视频编码方法和使用速率量化器模型进行编码的系统
公开(公告)号：US5612900A
公开(公告)日：1997-03-18
申请号：US522495
申请日：1995-08-31
申请人： Faramarz Azadegan , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura
发明人： Faramarz Azadegan , Hiroaki Unno , Hideki Mimura , Tetsuya Kitamura
IPC分类号： G06T9/00 , G11B20/10 , G11B27/031 , G11B27/034 , G11B27/30 , G11B27/32 , G11B27/34 , H04N7/26 , H04N7/30 , H04N7/36 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/806 , G06F17/00
CPC分类号： H04N9/8063 , G11B27/031 , G11B27/034 , H04N19/115 , H04N19/124 , H04N19/15 , H04N19/154 , H04N19/157 , H04N19/159 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/176 , H04N19/192 , H04N19/503 , H04N19/60 , H04N19/61 , H04N7/52 , H04N9/8042 , G11B2220/2562 , G11B2220/90 , G11B2220/913 , G11B27/3027 , G11B27/329 , G11B27/34 , H04N19/146 , H04N19/152 , H04N19/30
摘要： A system and method for determining quantization level versus bit-rate characteristics of raw video signals in video frames during a pre-encoding phase for video technologies such as MPEG and MPEG-2. During a pre-encoding phase, various quantization levels are assigned to various parts of a frame, and the frame is then pre-encoded to determine a bit-rate for each quantization level used in the pre-encoding phase. Depending on the embodiment, quantization levels are assigned in one of many ways: checkerboard style, block style or any other distribution that avoids statistical anomalies. The method and system repeat the pre-encoding for plural frames, recording all quantization level versus bit-rate statistics on a frame by frame basis. These statistics are then used during encoding or re-encoding of a digital video to control the number of bits allocated to one segment of the digital video as compared to another segment, based on a target quality and target storage size for each segment. The resulting encoded digital video is stored on a digital storage medium, such as a compact disc.
摘要翻译：一种用于在视频技术（例如MPEG和MPEG-2）的预编码阶段期间在视频帧中确定原始视频信号的量化级别与比特率特性的系统和方法。在预编码阶段期间，将各种量化级别分配给帧的各个部分，然后对帧进行预编码，以确定在预编码阶段中使用的每个量化级别的比特率。根据实施例，量化级别以多种方式分配：棋盘样式，块样式或避免统计异常的任何其他分布。该方法和系统重复对多个帧的预编码，在逐帧的基础上记录所有量化级与比特率统计。然后，基于每个段的目标质量和目标存储大小，在数字视频的编码或重新编码期间使用这些统计数据来控制分配给数字视频的一个段的比特数量与另一段相比分配的比特数。所得到的编码数字视频被存储在诸如光盘之类的数字存储介质上。

6. 发明授权

US5134464A Method and apparatus for the transmission and reception of a multicarrier digital television signal 失效
标题翻译：用于发送和接收多载波数字电视信号的方法和装置
公开(公告)号：US5134464A
公开(公告)日：1992-07-28
申请号：US647383
申请日：1991-01-29
申请人： Carlo Basile , Aldo G. Cugnini , Alan P. Cavallerano , David A. Bryan , Faramarz Azadegan , Mikhail Tsinberg , Yo-Sung Ho
发明人： Carlo Basile , Aldo G. Cugnini , Alan P. Cavallerano , David A. Bryan , Faramarz Azadegan , Mikhail Tsinberg , Yo-Sung Ho
IPC分类号： H04L27/26 , H04N5/21 , H04N5/44 , H04N5/46 , H04N7/015 , H04N7/06 , H04N7/08 , H04N7/081
CPC分类号： H04L5/0005 , H04L27/2608 , H04L5/0044 , H04L5/006 , H04N5/211 , H04N5/44 , H04N5/4401 , H04N7/063 , H04N7/08 , H04L27/2601
摘要： A method and apparatus for encoding a television source signal having a first bandwidth, into a frequency multiplexed signal having a narrower bandwidth and comprising a plurality of subcarriers modulated with digital information. Each of said subcarriers has an amplitude, bandwidth and coding characteristic which reflects the relative importance of the digital information provided thereby. The frequency multiplexed signal is suitable for use in a broadcasting environment wherein a conventional television signal is also used and wherein said subcarriers are disposed in frequency, in positions which are least likely to result in interference to or from said conventional signal. The invention also includes a receiver for decoding the frequency multiplexed signal and for providing a high definition display.
摘要翻译：一种用于将具有第一带宽的电视信号源编码成具有较窄带宽并且包括用数字信息调制的多个子载波的频率复用信号的方法和装置。所述子载波中的每一个具有反映由此提供的数字信息的相对重要性的幅度，带宽和编码特性。频率复用信号适用于广播环境，其中也使用传统的电视信号，并且其中所述子载波被布置在频率上，在最不可能导致与所述常规信号的干扰的位置。本发明还包括用于对频率复用信号进行解码并提供高清晰度显示的接收机。

7. 发明授权

US5555193A Video compression system with editing flag 失效
标题翻译：具有编辑标志的视频压缩系统
公开(公告)号：US5555193A
公开(公告)日：1996-09-10
申请号：US66191
申请日：1993-05-25
申请人： Mikhail Tsinberg , Faramarz Azadegan , Antony Hu , Shigeo Ogawa
发明人： Mikhail Tsinberg , Faramarz Azadegan , Antony Hu , Shigeo Ogawa
IPC分类号： H04N5/926 , H04N7/26 , H04N7/50 , H04N9/877 , G02F1/33
CPC分类号： H04N9/877 , H04N19/423 , H04N19/427 , H04N19/428 , H04N19/61 , H04N5/9261
摘要： A video system that avoids disruption of a displayed scene. A scene from a first data stream is held on a display while a second scene from a second data stream is being built up. A first embodiment includes a transition memory for holding the first scene and a frame memory for building up the second scene. Once the second scene is built up, it is displayed. A second embodiment includes a memory in which the first scene is held and displayed on the display while the second scene is also being built up in the memory.
摘要翻译：一种避免显示场景中断的视频系统。来自第一数据流的场景被保持在显示器上，而来自第二数据流的第二场景被建立。第一实施例包括用于保持第一场景的转换存储器和用于构建第二场景的帧存储器。一旦建立了第二个场景，就会显示。第二实施例包括存储器，其中第一场景被保持并显示在显示器上，同时第二场景也被建立在存储器中。

8. 发明授权

US5282019A Method and apparatus for the transmission and reception of a multicarrier digital television signal 失效
标题翻译：用于发送和接收多载波数字电视信号的方法和装置
公开(公告)号：US5282019A
公开(公告)日：1994-01-25
申请号：US875491
申请日：1992-04-29
申请人： Carlo Basile , Aldo G. Cugnini , Alan P. Cavallerano , Yo-Sung Ho , David A. Bryan , Faramarz Azadegan , Mikhail Tsinberg
发明人： Carlo Basile , Aldo G. Cugnini , Alan P. Cavallerano , Yo-Sung Ho , David A. Bryan , Faramarz Azadegan , Mikhail Tsinberg
IPC分类号： H04L27/26 , H04N5/21 , H04N5/44 , H04N5/60 , H04N7/06 , H04N7/08 , H04N11/24 , H04N11/12
CPC分类号： H04N5/4401 , H04L27/2601 , H04L27/2608 , H04N11/002 , H04N5/211 , H04N5/44 , H04N7/063 , H04N7/08 , H04N5/602
摘要： A method and apparatus for encoding a television source signal having a first bandwidth, into a frequency multiplexed signal having a narrower bandwidth and comprising a plurality of subcarriers modulated with digital information. Each of said subcarriers has an amplitude, bandwidth and coding characteristic which reflects the relative importance of the digital information provided thereby. The frequency multiplexed signal is suitable for use in a broadcasting environment wherein a conventional television signal is also used and wherein said subcarriers are disposed in frequency, in positions which are least likely to result in interference to or from said conventional signal. The invention also includes a receiver for decoding the frequency multiplexed signal and for providing a high definition display.
摘要翻译：一种用于将具有第一带宽的电视信号源编码成具有较窄带宽并且包括用数字信息调制的多个子载波的频率复用信号的方法和装置。所述子载波中的每一个具有反映由此提供的数字信息的相对重要性的幅度，带宽和编码特性。频率复用信号适用于广播环境，其中也使用传统的电视信号，并且其中所述子载波被布置在频率上，在最不可能导致与所述常规信号的干扰的位置。本发明还包括用于对频率复用信号进行解码并提供高清晰度显示的接收机。

9. 发明授权

US5179442A Method and apparatus for digitally processing a high definition television augmentation signal 失效
标题翻译：用于数字处理高分辨率电视增强信号的方法和装置
公开(公告)号：US5179442A
公开(公告)日：1993-01-12
申请号：US618343
申请日：1990-11-26
申请人： Faramarz Azadegan , Eberhard H. Fisch , Alan P. Cavallerano , Mikhail Tsinberg
发明人： Faramarz Azadegan , Eberhard H. Fisch , Alan P. Cavallerano , Mikhail Tsinberg
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , H04N7/54 , H04N11/24
CPC分类号： H04N11/004 , H04N19/126 , H04N19/129 , H04N19/14 , H04N19/176 , H04N19/18 , H04N7/54 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/91
摘要： A method and apparatus for digital encoding are described for compressing the augmentation channel signals (chrominance and luminance signals for panel information and high frequency luminance and line difference signal) so that this information can be transmitted in a 3 MHz wide RF channel using a digital transmission scheme such as QPSK. Analog signal components are sampled and converted to digital signals. Each of the signals is fed into a separate coder which reduces the number of bits/pixel required to reconstruct the original signal. Compression is achieved by quantization and removal of redundancy. The compression scheme is based on the use of DCT together with VLC. Each augmentation signal has its own coder, which is adapted to the unique statistics of this signal.
摘要翻译：描述了一种用于数字编码的方法和装置，用于压缩增大信道信号（面板信息和高频亮度和线差信号的色度和亮度信号），以便可以使用数字传输在3MHz宽的RF信道中发送该信息方案如QPSK。模拟信号分量被采样并转换为数字信号。每个信号被馈送到单独的编码器，其减少了重构原始信号所需的位数/像素数。通过量化和去除冗余来实现压缩。压缩方案是基于使用DCT与VLC一起使用的。每个增强信号都有自己的编码器，适用于该信号的唯一统计。

10. 发明授权

US06693961B1 System and method of video frame memory reduction of video decoders 有权
标题翻译：视频解码器视频帧存储器减少的系统和方法
公开(公告)号：US06693961B1
公开(公告)日：2004-02-17
申请号：US09480225
申请日：2000-01-10
申请人： Faramarz Azadegan
发明人： Faramarz Azadegan
IPC分类号： H04B166
CPC分类号： H04N19/90 , H04N19/176 , H04N19/186 , H04N19/428 , H04N19/44 , H04N19/63
摘要： Embodiments of the invention comprise a new device and method to realize an improved video frame memory reduction for a video decoder. In one embodiment, this improvement is achieved by a removal of the rate controller and the utilization of both a block compression technique and a fixed storage allocation technique, in order to lower the overall system cost, and to lower the frame memory requirements. In a preferred embodiment, this improvement is achieved by performing a hierarchical transform, for example, a Haar transform, that operates on the previously decoded frames. Then, the coefficients obtained from this transformation are quantized and then run-length coded, utilizing variable-length codes. The hierarchical transform preferably operates on an N×N block size with L levels of hierarchical decomposition, where N and L can be selected in advance. For example, in one preferred embodiment, N may equal 8, and L may equal 3. The compression system then fits the N×N block into an allocated storage of (N×N)/cf bytes, where cf designates the compression factor. For example, a nominal value of cf that equals 2, 3, or 4 may be utilized. The quantization process comprises a simple scaling of the coefficients. However, the DC coefficient is not scaled. The variable-length encoder comprises a run-length encoder that fits as many coefficients as is possible into the available space of the (N×N)/cf bytes.
摘要翻译：本发明的实施例包括一种用于实现视频解码器的改进的视频帧存储器减少的新装置和方法。在一个实施例中，通过移除速率控制器以及块压缩技术和固定存储分配技术两者的利用来实现该改进，以便降低整体系统成本，并降低帧存储器要求。在优选实施例中，这种改进是通过执行对先前解码的帧进行操作的分层变换，例如Haar变换来实现的。然后，使用可变长度码对从该变换获得的系数进行量化，然后进行游程长度编码。分层变换优选地以具有L级分层分解的N×N块大小进行操作，其中可以预先选择N和L。例如，在一个优选实施例中，N可以等于8，并且L可以等于3.然后压缩系统将N×N块拟合到（N×N）/ cf字节的分配存储中，其中cf表示压缩因子。例如，可以使用等于2,3或4的cf的标称值。量化过程包括系数的简单缩放。然而，DC系数不缩放。可变长度编码器包括游程长度编码器，该编码器将尽可能多的系数拟合到（N×N）/ cf字节的可用空间中。

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