This paper presents a general traac control framework for Asynchronous Transfer Mode (ATM) networks with its performance evaluation. The proposed traac control scheme can incorporate all the recently considered ATM service classes including Constant Bit Rate (CBR), real time Variable Bit Rate (rtVBR), non-real time Variable Bit Rate (nrVBR), Available Bit Rate (ABR) and Unspeciied Bit Rate (UBR...

This paper presents a general traac control framework for Asynchronous Transfer Mode (ATM) networks with its performance evaluation. The proposed traac control scheme can incorporate all the recently considered ATM service classes including Constant Bit Rate (CBR), real time Variable Bit Rate (rtVBR), non-real time Variable Bit Rate (nrVBR), Available Bit Rate (ABR) and Unspeciied Bit Rate (UBR...

Between the two main schemes of digital video coding, VBR encoding scheme is generally considered as better in terms of efficiency and encoding quality in comparison to CBR, because it retains the same quantization parameters for the whole encoding procedure (unconstrained VBR), without altering them according to a specific adaptive rate algorithm. Towards this generally accepted statement, thi...

Because the bit rate can be adjusted depending on the network traffic situation, the variable bit rate is more suitable than a fixed rate for transmitting images on the network. In this paper, a new variable rate hierarchical classified vector quantization (VHCVQ) scheme is proposed. This technique is suitable for progressive transmission. In our two-stage VHCVQ scheme, we use the differences b...

Sinusoidal transform coding (STC) is known to be capable of producing good communication quality speech coded at bitrates below 4kb/s. Discrete all-pole modelling (DAP) is an alternative spectral estimation method which can be more accurate than the conventional linear prediction (LP) analysis normally used by STC. In the quest to achieve the highest possible speech quality at lower and lower a...

This study is designed to consider the two important yet often neglected factors, which are factory recommendation and bit features, in optimum bit selection. Image processing techniques have been used to consider the bit features. A mathematical equation, which is derived from a neural network model, is used for drill bit selection to obtain the bit’s maximum penetration rate that corresponds ...

In previous techniques of bit rate reduction transcoding, reusing the mode of the input MB is widely adopted. However, directly re-using the mode of input MB will cause additional losses for H.264 bit-rate scaling. Variable-size block-matching based motion estimation makes H.264 much more efficient than other coding standards while increasing its complexity. As the target bit rate changes, the ...

This paper describes the design and implementation of a le server for variable bit rate continuous media. We address the problem of building a server where each stream may have a diierent bit rate and, more importantly, where the bit rate within a single stream may vary considerably. Such a server has been implemented within a high-speed network environment. The server is designed to be used in...