One would hope so , Steve. Thanks for the news.
Stylistic apologies in advance. It is more elegant to simply place the link for the excellent IBM patent search site as others have done - but I am imagining some of the readers of these posts with technological expertise may be pressed for time. So actually posting precis of a few of AXC's more recent ones. My only comment....if the new disk based product in the fall is indeed to be NEW, it will have to involve some AXC technology. As best I can tell Micronet's patents are all ornamental.
5774311 : Small core magnetic head with non-magnetic side support
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INVENTORS:Gooch; Beverley R., Sunnyvale, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Juneÿ30,ÿ1998ÿFILED: Mar.ÿ24,ÿ1997SERIAL NUMBER: 822884ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G11B 005/127; U.S. CLASS:360/125FIELD OF SEARCH:360-125,126,122,127 ;
ABSTRACT:ÿÿ A head having very low leakage flux loss since the head is constructed with a very small elongate magnetic intercore, having a winding window formed therein if desired, with the intercore being supported on either side by non-magnetic side support blocks. The side support blocks enable mounting of the head to the usual style of head block and provide the physical structure and size necessary for formation of a low wear head profile, if desired.
5729400 : Data recorder using still framing techniques for information retrieval and method
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INVENTORS:Kambies; Keith A., Foster City, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Mar.ÿ17,ÿ1998ÿFILED: Julyÿ20,ÿ1995SERIAL NUMBER: 504822ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G11B 015/467; U.S. CLASS:360/077.13; 386/080; FIELD OF SEARCH:360-70,77.13,77.14 ; 386-78,79,80,81 ;
ABSTRACT:ÿÿ An automatic scan tracking, helical tape type of data recorder is disclosed herein along with its method of operation. Data is written onto magnetic recording tape along with data retrieval information by means of a rotating scanner assembly forming part of the recorder as the recording tape moves at a given recording speed in cooperative engagement with the scanner assembly. Data is normally retrieved from the recording tape along with the data retrieval information by means of the rotating scanner assembly as the recording tape moves longitudinally at the same given recording speed. In operation, the rotating scanner assembly of the recorder retrieves data and data retrieval information from a segment of the recording tape while the latter is not moving, that is, during a period when the tape is stationary for enabling adjustment of the read head position relative to the track depending on the evaluation of the data resulting from the stationary tape read. Provision is also made for causing the rotating scanner to retrieve data retrieval information from a segment of the recording tape while the latter is accelerating from a still state to its given recording state, with subsequent evaluation of the data and adjustment based on the results.
5602704 : Composite metal and ferrite head transducer and manufacturing method therefor
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INVENTORS:Gooch; Beverly R., Sunnyvale, CA
Niedermeyer; Rex, Redwood City, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Feb.ÿ11,ÿ1997ÿFILED: Aug.ÿ8 ,ÿ1994SERIAL NUMBER: 287459ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G11B 005/245; G11B 005/255; U.S. CLASS:360/125FIELD OF SEARCH:360-125,126,127 ;
ABSTRACT:ÿÿ A magnetic transducer is batch fabricated from a pair of confronting elongate composite block substrates each formed of a thin cap of non-magnetic material bonded to a much larger block of magnetic material, such as ferrite. An intermediate winding groove is formed in proximate relation to the non-magnetic material along the length of one or both composite block substrates. One (or both) of the substrates is provided with a plurality of parallel spaced V-shaped grooves oriented in a direction perpendicular to the winding groove, wherein adjacent grooves form therebetween track width defining [prtopms. A core layer of high permeability magnetic material, such as Alfesil material, is deposited over the edges whereby magnetic poles are formed of the edges. A gap layer of insulating material is deposited on the edges over the high permeability magnetic material. Two of the composite block substrates are placed with the edges in aligned abutting relation and are assembled by glass bonding. Individual transducers are sliced from the bonded assembly of substrates and are lapped and polished and a coil is added to provide the finished transducers. Alternative embodiments may employ winding and V-shaped grooves in only one composite block substrate with the matching substrate being flat, and/or may employ either rectangular solid or wedge-shaped non-magnetic caps bonded to the ferrite blocks.
5748192 : Video special effects system with graphical operator interface
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INVENTORS:Lindholm; Dennis Allen, Oakland, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Mayÿ5 ,ÿ1998ÿFILED: Nov.ÿ4 ,ÿ1996SERIAL NUMBER: 743266ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G06T 015/50; U.S. CLASS:345/425; 345/427; FIELD OF SEARCH:395-127,120,125,123,119,136,137,138 ; 345-427,420,425,423,419,436,437,438 ;
ABSTRACT:ÿÿ A video special effects system and method includes at least one signal system operating in real time to transform one or more input video signals to generate an output video in response thereto, a work station, an operator control panel and a control system communicating with the signal systems, the work station and the control panel. Control surfaces defined by one or two control curves are developed at the work station and subsequent used by the control system to define a video effect in which portions of the input video images are selectively mapped to the control surfaces and subsequently manipulated to define an output video image. The control system operates to define each parameter controlling the output image at selected event times and to individually interpolate each given parameter between the event times at which the parameter is defined. The signal systems generate the output images in response to input images and the instantaneous values of control parameters defined by the control system.
5721475 : Extended-resolution pulse-width modulation servomotor drive
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INVENTORS:Fincher; Clinton A., Redwood City, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Feb.ÿ24,ÿ1998ÿFILED: Oct.ÿ31,ÿ1996SERIAL NUMBER: 742257ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G05B 011/28; U.S. CLASS:318/599; 318/600; 318/254; 318/138; 318/439; FIELD OF SEARCH:318-599,600,798-815,280,439,254,138 ;
ABSTRACT:ÿÿ Drivers (24, 26, and 28) in the controller for a motor (14) drive the motor in accordance with a pulse-width-modulation scheme in which each pulse-width-modulation cycle includes a positive interval and a negative interval so that the value of the filtered output is proportional to the difference in duration between the positive and negative intervals. The pulse-width-modulator cycle also includes dead times between the positive and negative intervals, and these dead times are varied so that a change in a positive interval's duration in a fixed-duration pulse-width-modulation cycle does not necessarily result in an opposite change in the negative interval's duration. Consequently, the value resolution for a system in which the pulse-width-modulation cycle is a given number of system clock periods can be finer than it would be if the dead-time interval's duration were fixed.
5717552 : Magnetic core with field confinement structure
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INVENTORS:Varian; George R., Palo Alto, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Feb.ÿ10,ÿ1998ÿFILED: Sep.ÿ10,ÿ1996SERIAL NUMBER: 709800ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G11B 005/127; U.S. CLASS:360/125FIELD OF SEARCH:360-125,126,128 ;
ABSTRACT:ÿÿ An improved, shielded magnetic core structure is disclosed that is particularly well suited for use in magnetic read and write heads adapted for narrow track, short wavelength magnetic recording systems, and for transformers of high performance, wide band application. The improved magnetic cores use novel field confinement structures to reduce or eliminate leakage magnetic paths which normally do not link the head gap or do not link the transformer windings. This shielding arrangement substantially improves the performance of such devices, as compared to conventional, unshielded heads and transformers. Embodiments involving toroidal cores, thin film heads, and MR heads are disclosed, along with high performance, wide band transformer structures.
5710673 : Azimuth record head for minimizing and equalizing crosstalk between tracks of opposite azimuths
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INVENTORS:Varian; George R., Palo Alto, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Jan.ÿ20,ÿ1998ÿFILED: Juneÿ7 ,ÿ1996SERIAL NUMBER: 660355ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G11B 005/02; U.S. CLASS:360/021; 360/125; FIELD OF SEARCH:360-110,119,75,21,18,77.01,77.02,125,126,127 ;
ABSTRACT:ÿÿ In an azimuth recording format, the crosstalk of the A channel into the B channel is higher than the crosstalk of the B channel into the A channel because, at the ends of a magnetic recording where the switching contour of constant magnetic field strength is equal to the media magnetization switching field, the switching contour follows a curve. The resulting curvature at the ends of the magnetic recording vary accordingly the angle of azimuth rejection between the B to A azimuth relative to the A to B azimuth at the edges of the track. The use of a record head of a unique design wherein the trailing pole face of the head extends laterally beyond its leading pole face at the over-writing side of the head, removes the curvature at the ends of the transition recordings forming the recorded tracks. In such record heads, the switching contour generated at the trailing pole face of the gap at the over-writing side of the head enters and exits the trailing core generally normal to the pole face and at points thereon which are spaced beyond the corresponding end of the leading core face. Thus, no curvature is generated at the end of the recordings which perform over-writing of the previous adjacent tracks recorded in the media. Thus, the record heads show the same minimized level of crosstalk between the A to B or the B to A azimuth channels.
5615355 : Method and apparatus for buffering a user application from the timing requirements of a DRAM
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INVENTORS:Wagner; Steven D., Belmont, CA
ASSIGNEES:Ampex Corporation, Redwood City, CAISSUED:Mar.ÿ25,ÿ1997ÿFILED: Mar.ÿ9 ,ÿ1995SERIAL NUMBER: 401329ÿMAINT. STATUS: INTL.ÿCLASS (Ed.ÿ6):G06F 013/14; U.S. CLASS:395/494; 395/432; FIELD OF SEARCH:395-431,438,500,550,432,494,495,496,250 ; 365-230.03,233 ;
ABSTRACT:ÿÿ A method and apparatus for data storage and retrieval including first and second banks of refreshable memory, such as DRAMs. The user application provides a write clock and a read clock, the read clock being independent of the write clock. FIFO buffers are provided between the user application and the memory, with the buffers providing for read data with associated addresses and write data with associated addresses. A DRAM controller system is provided including a timing generator for the DRAM controlled by an external clock. The controller system controls the buffers to enable the continuous writing of user data to one of the first and second banks at a given address, with the user address and data synchronized to the write clock, while enabling simultaneous reading of data at a user provided address from the other of the first and second banks, with the loading of read addresses and outputting of read data occurring continuously and synchronously to the read clock. Refresh of the memory occurs when the read or write buffer is not full. |
