摘要:
An apparatus for supporting a parachute flight controller from a parachute comprises a bearing member, for example a pulley, a load-bearing coupling, for example a harness, connected to the bearing member and including a connector for connecting the coupling to a parachute flight controller. The coupling includes a load-bearing connector for connecting a payload thereto, and the bearing member is adapted to enable relative movement, controlled by the flight controller, between the bearing member and a support member, for example a flexible coupling line or web for supporting the bearing member connected between first and second suspension lines of a parachute. The flight controller may include one or more control lines connected to the support member or suspension lines which can be wound in or out of the flight controller to effect relative movement between the bearing member and the support member and thereby control the direction of the parachute.
摘要:
The present invention relates to a hydrogenation process for the preparation of aromatic amino compounds containing directly on the aryl ring or in a side chain one or more entities that may also undergo hydrogenation, such as carbon multiple bonds, nitrile groups, imino groups or carbonyl groups. The preparation is carried out by catalytic hydrogenation of the corresponding aromatic nitro compounds in the presence of a phosphorus-modified noble metal catalyst. The invention relates also to the use of modified noble metal catalysts for the hydrogenation of aromatic nitro compounds containing carbon multiple bonds and/or substituted by nitrile, imino or carbonyl groups.
摘要:
One object of the invention is a process for the catalytic hydrogenation of aromatic nitro compounds in solution or in melt in the presence of hydrogen and at least one noble metal catalyst, nickel catalyst or cobalt catalyst, in which process a catalytic amount of at least one vanadium compound is present, wherein the vanadium has the oxidation state 0, II, IV or V. It has been found that in the catalytic hydrogenation of aromatic nitro compounds the accumulation of hydroxylamines can be almost completely prevented by the addition of catalytic amounts of vanadium compounds, which usually results in concentrations of
摘要:
By employing field store memories, a skip-field video recorder records odd and even fields of different frames and then plays back full frames reconstructed from the recorded odd and even fields, thus achieving maximum vertical resolution in the playback video image.
摘要:
Apparatus and method are disclosed for playing back a video signal representative of a still image. The video signal is recorded on a magnetic recording disk in the form of three separate signals on three respective tracks; a color component signal on a color track and two luminance component signals on two luminance tracks. The still image is reproduced by initially reading the color track with a playback head and storing the color component signal. Then the playback head is cycled back and forth between the two luminance tracks to read a continuous sequence of alternating first and second luminance component signals. The video signal is generated by repetitively combining each luminance component signal in the continuing sequence with the stored color component signal.
摘要:
A process for the production of compounds useful as fluorescent whitening agents of formula: ##STR1## in which X and Y, are as defined herein and n is 1 or 2, comprises A) diazotising one mole of an amine of formula: ##STR2## (2A) to produce a diazonium compound of the formula: ##STR3## (2) in which G.sub.1 is a counter ion; and diazotising one mole of an amine of formula: ##STR4## (3A) to produce a diazonium compound having the formula: ##STR5## (3); and B) reacting one mole of a divinyl compound having the formula: ##STR6## (4) with one mole of a compound having the formula (2) and with one mole of a compound having the formula (3), in the presence of an inorganic or organic palladium salt, or a mixture thereof, as catalyst-precursor.
摘要:
In a video recorder having a drum with opposing dual record heads, successive fields of only the luminance signal (without the chrominance signal) are recorded by the heads during successive head rotations through 180.degree.. The tape is overwrapped around the drum by a certain angle (over 216.degree., for example) so that the chrominance signal of each preceeding field may be compressed and recorded during each head rotation through the overwrap angle (i.e., from 180.degree. to 216.degree. in the example). Because the luminance signal is not mixed with the chrominance for recording (as has been usual), the luminance bandwidth may be increased by about 1 megaHertz to occupy the frequency band otherwise occupied by the color-under chrominance signal in the prior art. This provides a significant improvement in overall video image resolution.
摘要:
A removable container holds a plurality of video disks each storing prerecorded video pictures that are played back in a multi-disk video player. The container includes a magazine for storing the disks and a non-volatile, erasable memory supported adjacent the magazine between guide rails formed on one side of the magazine. The memory is locked in place on the rails when the container is outside the player by a movable locking key that is biased into a locking slot in the magazine. When the container is inserted into the player, the locking key is displaced out of the slot; the memory is detached from the magazine and connected into the player circuit, thus permitting movement of the magazine without disturbing transfer of data to and from the immobilized memory.
摘要:
A video cassette recorder (VCR) erase protection system which is responsive to the standard anti-erase switch on a video cassette, is capable of "filling-in" unused portions of an erase-protected video cassette without disturbing previously recorded material on the cassette and without requiring the user to turn off the anti-erase switch on the cassette. By eliminating the need to turn off the anti-erase switch before recording additional material, the possibility of forgetting to later rearm the switch is eliminated. A microprocessor, responding to the anti-erase switch position and to the video signal sensed during an initial fast winding of the tape, intelligently positions the tape prior to recording so that recording takes place in unused tape portions only, without requiring any further action by the user. The microprocessor commands the video cassette recorder to fast wind the tape past previously recorded material, before permitting the recording operation to begin, whenever it senses that the cassette has an anti-erase switch in the ON position.
摘要:
In an electronic still camera adapted for professional or amateur photography, a solid state thermo-electric cooler rapidly cools a solid state image sensor (imager) in accordance with the ambient illumination or subject brightness, so as to rapidly increase the sensitivity of the imager to the required level. Thus, the device may be used in place of a flash attachment for still photography under low-light conditions. A microprocessor controls the cooler and determines optimum imager temperature for a given set of subject brightness, shutter speed and aperture size values. These values are correlated to corresponding optimum imager temperatures by a set of polynomials--or by a set of look-up tables--stored in a read only memory accessed by the microprocessor.