专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

AU2282095A Timing generator 未知
公开(公告)号：AU2282095A
公开(公告)日：1995-10-30
申请号：AU2282095
申请日：1995-04-06
申请人： MEDIA VISION INC
发明人： COLVIN BRYAN J SR , SHINDO MASAO
IPC分类号： H03B27/00 , H03K3/03 , H03L7/099 , H03B5/00 , H03K3/64 , H03L7/06
摘要： A timing generator contains an oscillator section (10) formed with a plural number of stages (S1-SN) for respectively producing a like number of stage signals (VS1-VSN) that sequentially change signal values at a basic oscillator frequency (fO). The oscillator section is typically implemented as a ring oscillator. In response to the stage signals, a timing-signal generating section (14) generates one or more timing signals (VT1-VTM), each having at least two transitions corresponding to transitions of two or more of the stage signals. A control section (12), preferably arranged in a phase-locked loop, causes the oscillator frequency and a reference frequency (fR) to have a substantially fixed relationship.

12. 发明专利

AU2243995A Musical instrument simulation processor 未知
公开(公告)号：AU2243995A
公开(公告)日：1995-10-30
申请号：AU2243995
申请日：1995-04-06
申请人： MEDIA VISION INC
发明人： COLVIN BRYAN J SR , GOCHNAUER DANIEL B , COOK PERRY R
IPC分类号： G06F15/78 , G10H7/00 , G06F7/38

13. 发明专利

AU4634293A Video compression and decompression using block selection and subdivision 未知
公开(公告)号：AU4634293A
公开(公告)日：1994-01-24
申请号：AU4634293
申请日：1993-06-18
申请人： MEDIA VISION INC
发明人： RAFFERTY JAMES W
IPC分类号： G06T9/00 , H04N1/41 , H04N1/64 , H04N7/26 , H04N1/415
摘要： A frame of digitized video data is compressed by dividing the frame into a plurality of rectangular blocks each typically measuring 4 pixels by 4 pixels. The entropy of each block is determined by measuring the difference between a maximum luminance of any pixel in the block and the minimum luminance of any pixel in the block. Those blocks which have a luminance value above a predetermined threshold (such as the average luminance for the block) are then subdivided into four blocks each including four pixels. Then, for each sub-block of 4 pixels a conventional video color compression technique is applied. For the non-subdivided blocks i.e., where the maximum luminance difference is below the threshold, the entire block is video compressed into a high color value and a low color value which are typically averages of the higher luminance and lower luminance group pixels respectively. Thus, some blocks are adaptively subdivided or not with greater video compression being provided for those blocks with relatively smaller variations in internal video information between the pixels and with the other blocks being subdivided to provide more video information and hence less compression. This results in a relatively high video compression ratio especially suitable for implementation by computer software.

14. 发明专利

AU4546393A Audio power amplifier with noise prevention at turn-on and turn-off 未知
公开(公告)号：AU4546393A
公开(公告)日：1994-01-31
申请号：AU4546393
申请日：1993-07-09
申请人： MEDIA VISION INC
发明人： ROVNER MICHAEL SCOTT , COLVIN BRYAN JOSEPH SR
IPC分类号： H03F1/30 , H03F1/26
摘要： An audio power amplifier is provided that includes circuitry to prevent popping noises when the amplifier is turned on and turned off. The amplifier can be powered with a single-ended voltage power supply, and thus may be used within systems such as personal computer. The amplifier includes a control circuit that prevents the fast charging of the output AC coupling capacitor when the amplifier is turned on and turned off. The control circuit controls a driver stage such that the output transistors turn on slowly when power is first applied, and such that the output transistors turn off quickly when the supply voltage is removed.

15. 发明专利

AU2282195A Economical generation of exponential and pseudo-exponential decay functions in digital hardware 未知
公开(公告)号：AU2282195A
公开(公告)日：1995-10-30
申请号：AU2282195
申请日：1995-04-06
申请人： MEDIA VISION INC
发明人： COOK PERRY R , COLVIN BRYAN J SR
IPC分类号： G06F7/556 , G10H1/057 , G10H7/12

16. 发明专利

AU7680094A Sound synthesis model incorporating sympathetic vibrations of strings 未知
公开(公告)号：AU7680094A
公开(公告)日：1995-03-22
申请号：AU7680094
申请日：1994-09-01
申请人： MEDIA VISION INC
发明人： COLVIN BRYAN J SR , COOK PERRY R
IPC分类号： G10H7/00 , G10H5/00 , G10H7/08 , G10H1/02
摘要： Synthesizer models for emulating musical instruments are improved to take into account sympathetic string vibrations. One embodiment of the present invention scales an output signal from a sound synthesis model and uses the scaled signal as an input signal for a number of single-string emulations causing the single-string emulations to produce sound signals corresponding to sympathetic string vibrations. The output signals from the synthesis model and from all of the single-string emulations are added together. Another embodiment employs an octave's worth of single-string emulations to emulate the lower strings of an emulated instrument. Still another embodiment is a synthesizer which includes an input bus for accepting a sound signal, scaling means, a plurality of single-string emulations, and means for summing output signals from the string emulations. Embodiments preferably employ waveguide synthesis or the plucked string model to emulate single-strings.

17. 发明专利

AU4163796A Improved digital synthesizer 未知
公开(公告)号：AU4163796A
公开(公告)日：1996-06-06
申请号：AU4163796
申请日：1995-11-14
申请人： MEDIA VISION INC
发明人： COOK PERRY , SHINDO MASAO
IPC分类号： G06F1/03 , H03B21/00 , H03C1/00

18. 发明专利

AU8009994A Residual excited wave guide 未知
公开(公告)号：AU8009994A
公开(公告)日：1995-03-22
申请号：AU8009994
申请日：1994-09-01
申请人： MEDIA VISION INC
发明人： COLVIN BRYAN J SR , COOK PERRY R , GOCHNAUER DANIEL
IPC分类号： G10H7/08 , G10H1/057 , G10H1/12 , G01H1/12
摘要： Synthesizer models for emulating musical instruments can be improved using an analysis model that compares the output signal of the model to a recording of a desired sound and derives a residual signal that can be used to correct the model. When the original model is a good one, the residual signal is small and takes much less memory to store than is required for a sampled sound.

19. 发明公开

EP0717871A4 RESIDUAL EXCITED WAVE GUIDE 失效
标题翻译： RESTSIGNALANGEREGTER WELLENLEITER
公开(公告)号：EP0717871A4
公开(公告)日：1996-10-30
申请号：EP94931271
申请日：1994-09-01
申请人： MEDIA VISION INC
发明人： COLVIN BRYAN J SR , COOK PERRY R , GOCHNAUER DANIEL
IPC分类号： G10H7/08 , G10H1/057 , G10H1/12
CPC分类号： G10H1/057 , G10H1/125
摘要： Synthesizer models for emulating musical instruments can be improved using an analysis model that compares the output signal (Y') of the model to a recording (S) of a desired sound and derives a residual signal (delta) that can be used to correct the model. When the original model is a good one, the residual signal is small and takes much less memory to store than is required for a sampled sound.
摘要翻译：用于仿真乐器的合成器模型可以使用将模型的输出信号（Y'）与期望的声音的记录（S）进行比较并且导出残差信号（delta）的分析模型来改进，所述残差信号可以用于校正模型。当原始模型是一个好的模型时，残留信号很小，存储的内存要少于采样声音所需的内存。

20. 发明公开

EP0717871A1 RESIDUAL EXCITED WAVE GUIDE 失效
标题翻译： REST信号激励波导
公开(公告)号：EP0717871A1
公开(公告)日：1996-06-26
申请号：EP94931271.0
申请日：1994-09-01
申请人： MEDIA VISION, INC.
发明人： COLVIN, Bryan, J., Sr. , COOK, Perry, R. , GOCHNAUER, Daniel
IPC分类号： G10H7 , G10H1
CPC分类号： G10H1/057 , G10H1/125
摘要： Synthesizer models for emulating musical instruments can be improved using an analysis model that compares the output signal (Y') of the model to a recording (S) of a desired sound and derives a residual signal (delta) that can be used to correct the model. When the original model is a good one, the residual signal is small and takes much less memory to store than is required for a sampled sound.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式